Academic literature on the topic 'Tracked vehicle'

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Journal articles on the topic "Tracked vehicle"

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Zhang, Yu, Mianhao Qiu, Xixia Liu, Jun Li, Haijun Song, Yue Zhai, and Hongjuan Hu. "Research on Characteristics of Tracked Vehicle Steering on Slope." Mathematical Problems in Engineering 2021 (January 31, 2021): 1–18. http://dx.doi.org/10.1155/2021/3592902.

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A special design is needed for an unmanned tracked vehicle (UTV) to meet the requirements of off-road environments and complex tasks. A loose surface is the main terrain for tracked vehicles in off-road driving. Slope steering is inevitable while driving in such conditions; hence, its performance is a major concern for tracked vehicles on loose terrain. This study investigates the slope steering performance of a tracked vehicle. An improved dynamic steering model is proposed when considering the shear stress-shear displacement relation of soil at the track-ground interface. The influence of ground characteristics on the slope steering performance of a tracked vehicle is illustrated. The track slip rate is adopted as an index to evaluate the influence of typical vehicle structure parameters on the slope steering performance of a tracked vehicle. This study provides technical support for the design and optimization of UTV.
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Zhou, Chong Kai, Ya Yu Huang, and Li Ni. "The Dynamics Simulation of Tracked Vehicles on the Hard and Soft Ground Based on the RecurDyn." Advanced Materials Research 842 (November 2013): 351–54. http://dx.doi.org/10.4028/www.scientific.net/amr.842.351.

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In order to accurately study a tracked vehicle movement on the ground in hard and soft features, this paper uses multi-body dynamics simulation software RecurDyn tracked vehicle subsystems Track (LM), establishing a three-dimensional multi-body vehicle dynamics model. For tracked vehicles at an inclination of 10 degrees slope, through the soft and hard ground steering process dynamics simulation and comparative analysis. This paper provides an accurate basis for the future in-depth research on Tracked vehicle.
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Li, Jianfeng, Amir Khajepour, Yanjun Huang, Hong Wang, Chen Tang, and Yechen Qin. "A new coordinated control strategy for tracked vehicle ride comfort." Proceedings of the Institution of Mechanical Engineers, Part K: Journal of Multi-body Dynamics 232, no. 3 (October 12, 2017): 330–41. http://dx.doi.org/10.1177/1464419317734950.

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To improve tracked vehicle ride comfort and minimize weapon's vibration, a coordinated control strategy is developed for tracked vehicles' semi-active suspension systems. A model with eight degrees-of-freedom for a tracked vehicle equipped with magnetorheological dampers is established, and is followed by the formulation of a sliding mode controller. The proposed control algorithm is a localized-based controller that can change its target location in the tracked vehicle to where it is needed most. A co-simulation system model including a six-wheel tracked vehicle multi-body dynamics model, coordinated control strategy, and magnetorheological damper force allocator is developed to analyze the ride performance under bump and random road excitations. The simulation results demonstrate that the proposed strategy is very effective in improving the vehicle's ride performance and is much better than the traditional skyhook controllers. The innovation of this paper can be concluded as the coordinated control strategy can simultaneously improve vertical acceleration and pitch acceleration for the hull, which is of great importance for combat situations.
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Pratama, Agung Yusuf, Muhammad Ridwan Lubis, Anjar Wanto, Indra Gunawan, and Ika Okta Kirana. "Penggunaan Sistem GPS Untuk Keamanan Kendaraan Dengan Kontrol SMS Menggunakan Mikrokontroler Arduino." BEES: Bulletin of Electrical and Electronics Engineering 2, no. 1 (July 27, 2021): 29–34. http://dx.doi.org/10.47065/bees.v2i1.803.

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Motor vehicle theft cases still often occur around us, this happens because there is still a lack of security systems in motorized vehicles that only use ignition keys and key covers, where the weakness of standard security systems like this has been understood by perpetrators of motor vehicle theft. to perform the action. The need for additional security systems is felt to be very necessary, in order to avoid the occurrence of motor vehicle theft. To overcome all this, a motor vehicle security system was created using SMS with an Arduino-based GPS tracking method, to create a GPS Tracker that can control vehicles via SMS (short message service) that can track or assist the vehicle's position using the Arduino Uno GPS (global positioning system). , SIM 800L. If the vehicle is lost, the owner can be tracked only by SMS to the number that has been programmed on the Arduino uno to prevent and make it easier to get back a stolen motor vehicle.
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Dong, Chao, Kai Cheng, Kangle Hu, and WenQiang Hu. "Dynamic modeling study on the slope steering performance of articulated tracked vehicles." Advances in Mechanical Engineering 9, no. 7 (July 2017): 168781401771241. http://dx.doi.org/10.1177/1687814017712418.

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Articulated tracked vehicles are used as special off-road transportation vehicles, and their mobility is gaining more attention now than before. As an important evaluation indicator of the mobility of articulated tracked vehicles, steering performance receives wide attention in particular. Most of the present studies focus on the planar steering performance; few studies employing current models concentrate on the slope steering performance of articulated tracked vehicles. To address this research gap, this study proposes a dynamic modeling method for analyzing the slope steering performance of articulated tracked vehicles. A kinematic model of a vehicle is initially constructed to analyze its kinematic characteristics during slope steering; these characteristics include velocity and acceleration. A dynamic model of a vehicle is then developed to analyze its mechanical characteristics during slope steering; these characteristics include vertical loads, driving forces, and driving moments of tracks. The created dynamic model is then applied to analyze the slope steering performance of a specific articulated tracked vehicle. A mechanical-control united simulation model and an actual test of an articulated tracked vehicle are suggested to verify the established steering model. Comparison results show the effectiveness of the proposed dynamic steering model.
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Wong, J. Y. "Optimization of the Tractive Performance of Articulated Tracked Vehicles Using an Advanced Computer Simulation Model." Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 206, no. 1 (January 1992): 29–45. http://dx.doi.org/10.1243/pime_proc_1992_206_158_02.

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This paper describes the results of a study of the effects of articulation joint configuration, suspension characteristics, location of the centre of gravity and initial track tension on the mobility of a two-unit, articulated tracked vehicle. The study was carried out using a comprehensive computer simulation model known as NTVPM-86. The results show that suspension characteristics, location of the centre of gravity and initial track tension have noticeable effects on the mobility of articulated tracked vehicles over marginal terrain, while the articulation joint angle has a less significant influence on vehicle performance. Locking the articulation joint between the two units of an articulated tracked vehicle usually causes a degradation of tractive performance. The approach to the optimization of the design of articulated tracked vehicles is demonstrated. It is shown that the simulation model NTVPM-86 can play a significant role in the optimization of articulated tracked vehicle design or in the evaluation of vehicle candidates for a given mission and environment.
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Li, Guo Qiang, and Xing Ye Wang. "Research on Electronic Pneumatic Steering and Braking Control Technology for Autonomous Tracked Vehicles." Applied Mechanics and Materials 577 (July 2014): 359–63. http://dx.doi.org/10.4028/www.scientific.net/amm.577.359.

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To realize the autonomous driving of a certain tracked vehicle, the paper has a research on its steering and braking control technology. According to the steering and braking device’s structure and work principle on the original vehicle, the paper design an electronic pneumatic steering and braking control system before analyzing the design request of the system and introduce the system’s work principle. Applying this system to the original vehicle’s autonomous transformation, a test was conducted on the vehicle, the test prove that the electronic pneumatic steering and braking control system can well satisfied the tracked vehicles’ request of steering and braking.
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Wong, Jo Y., Paramsothy Jayakumar, and Jon Preston-Thomas. "Evaluation of the computer simulation model NTVPM for assessing military tracked vehicle cross-country mobility." Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 233, no. 5 (April 23, 2018): 1194–213. http://dx.doi.org/10.1177/0954407018765504.

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In the United States and some other NATO (North Atlantic Treaty Organization) countries, the NATO Reference Mobility Model is currently used to evaluate military ground vehicle mobility. The module of the NATO Reference Mobility Model for predicting the cross-country performance of military vehicles is empirically based and was developed using test data collected decades ago. The NATO Reference Mobility Model has inherent limitations, such as the uncertainty whether its empirical relations can be extrapolated beyond the test conditions upon which they were derived or whether it can be used for evaluating new-generation military vehicles. This suggests that there is a need for the development of a physics-based model that takes into account the advancements in terramechanics and modelling/simulation techniques. This paper describes the results of a detailed evaluation of a physics-based model – the Nepean Tracked Vehicle Performance Model – for assessing military tracked vehicle cross-country performance. The performance of a notional tracked vehicle (an armoured personnel carrier) predicted by the latest version of the Nepean Tracked Vehicle Performance Model is compared with test data obtained on sandy terrain, muskeg and snow-covered terrain. The correlations between the predicted and measured performance are evaluated using the coefficient of correlation, coefficient of determination, root mean square deviation and coefficient of variation. The applications of the Nepean Tracked Vehicle Performance Model to predicting the maximum possible vehicle speed (speed-made-good) on a given terrain, the sensitivity of vehicle performance to variations in the values of terrain parameters and the mean maximum pressure are demonstrated. The results of this study indicate that the Nepean Tracked Vehicle Performance Model has potential to form the basis for the development of the next-generation cross-country performance assessment methodology for military tracked vehicles.
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Shiller, Zvi, and William Serate. "Trajectory Planning of Tracked Vehicles." Journal of Dynamic Systems, Measurement, and Control 117, no. 4 (December 1, 1995): 619–24. http://dx.doi.org/10.1115/1.2801122.

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This paper presents a method for computing the track forces and track speeds of planar tracked vehicles, required to follow a given path at specified speeds on horizontal and inclined planes. It is shown that the motions of a planar tracked vehicle are constrained by a velocity dependent nonholonomic constraint, derived from the force equation perpendicular to the tracks. This reduces the trajectory planning problem to determining the slip angle between the vehicle and the path tangent that satisfies the nonholonomic constraint along the entire path. Once the slip angle has been determined, the track forces are computed from the remaining equations of motion. Computing the slip angle is shown to be an initial boundary-value problem, formulated as a parameter optimization. This computational scheme is demonstrated numerically for a planar vehicle moving along circular paths on horizontal and inclined planes.
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Eto, Ryosuke, Tomoaki Satomi, and Hiroshi Takahashi. "Kinematics of Wheel-Type Tracked Vehicle with Crawlers in Between the Front and Rear Wheels." Journal of Robotics and Mechatronics 24, no. 6 (December 20, 2012): 933–38. http://dx.doi.org/10.20965/jrm.2012.p0933.

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Tracked vehicles are generally trucked to the field because they cannot move on the pavement. This operation is very slow and inefficient. To solve the problem, it is necessary to develop tracked vehicles that can move swiftly on both soft ground and pavement. Wheel-type tracked vehicles with crawlers in between the front and rear wheels can move swiftly using only the wheels on pavement and both wheels and crawlers on soft ground. However, such vehicles cannot turn on both wheels and crawlers. In this study, this steering constraint condition of the vehicle was analyzed with inverse kinematics. Using the obtained optimal conditions, numerical simulations and experiments were carried out. The vehicle’s turning performance was also shown to improve.
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Dissertations / Theses on the topic "Tracked vehicle"

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Kotb, Ata Wael Galal Mohamed. "Intelligent control of tracked vehicle suspension." Thesis, University of Manchester, 2014. https://www.research.manchester.ac.uk/portal/en/theses/intelligent-control-of-tracked-vehicle-suspension(00b9d080-2e1b-4634-89ec-061ab5899b76).html.

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Vibrations caused by rough road excitations influence tracked vehicle dynamic performance. Good capabilities of such vehicles like high mobility, manoeuvrability and comfort are guaranteed by optimal suspension systems. The suspension systems of tracked vehicles are exposed to extreme operating conditions. This creates a conflict between ride comfort and handling that is even greater than the conflict between ride comfort and handling for general road vehicles. Tracked vehicles must be able to traverse not only rough roads but also smooth terrains. The challenges in developing an optimized suspension system for tracked vehicles include the high and changeable damping forces required for tracked vehicles crossing rough terrains. The use of active or semi-active suspension systems overcomes the limitations inherent in the conventional passive suspension. However, active suspension systems are expensive, complicated to design and have high power demand. Thus, semi-active suspension systems have emerged as a good compromise between active and passive suspension system. There is considerable current research on the applications of magnetorheological (MR) fluid dampers for semi-active suspensions of executive brand of some cars. However, there is very little research on semi-active devices for tracked vehicle suspension. In fact, currently, there is no commercially available large scale MR dampers in the market that produce the high damping force to suit such applications. In response to these requirements, this research proposes a novel semi-active tracked vehicle suspension system that uses MR dampers to improve the ride comfort and handling characteristics of tracked vehicles. It also assesses the dynamics of the new suspension with various semi-active control methods. This study is conducted in four phases. The first phase provides a numerical investigation on the dynamic performance of a seven-degrees-of-freedom (7-DOF) passive suspension model of the armour personnel carrier (APC) M113 tracked vehicle. The numerical investigation considers the influence of variation of five suspension design parameters on the vehicle dynamic performance. These parameters include number, locations of hydraulic shock absorber, damping coefficient, suspension and wheel stiffnesses. The results indicate that the optimal suspension performance is attained by using two or three dampers. The best locations for these dampers are at the extreme road wheels i.e. the first, second and last road wheel stations. Moreover, the vehicle performance is reduced when the damping coefficient is increased. Additionally, low suspension stiffness offers better vehicle ride while high wheel stiffness degrades the vehicle performance. These results identify the limitations inherent in the conventional passive suspension. For the second phase, the dynamic characteristics of the hydraulic, hydro-gas and MR dampers are experimentally measured and fitted using the Chebyshev orthogonal functions to produce the restoring force surfaces for each damper, which are compared. On one hand, the restoring force surfaces of the hydraulic and hydro-gas dampers show fixed properties at specified frequencies. On the other hand, the restoring force surfaces of the MR dampers show properties that can be controlled at the same specified frequencies by the variation of the applied current levels. Thus, the potential and the effectiveness of the controllable properties of MR dampers for semi-active vibration control is demonstrated. Also, in this phase, the best set of parameters to use in the modified Bouc-Wen model to characterise the MR dampers, has been derived. The third phase of the project is also experimentally based. A new and novel test rig which represents the 7-DOF scaled suspension model of the tracked vehicle is designed and fabricated. The primary purpose of the test rig is to evaluate the performance of the proposed suspension with MR dampers. Furthermore, experiments are conducted on the test rig to evaluate some semi-active control methods and their effectiveness in reducing suspension vibration. The results show that the use of two or three MR dampers at the extreme wheels offers optimal suspension performance. This confirms the numerical results that are derived from the full scale passive suspension system with hydraulic dampers. The experimental results also show that skyhook control and hybrid control (which combines groundhook and skyhook controls) of the semi-active suspension are more effective in reducing the road-induced vibration and improving the suspension dynamic behaviours. Also, validations of the predicted responses of the semi-active scaled MR suspension model with the measured responses have been presented. The fourth and final phase provides a numerical simulation on the development and evaluation of the semi-active control methods for a full scale tracked vehicle suspension with MR dampers using the validated suspension model. Three semi-active control strategies are proposed. The first two controllers are the skyhook and hybrid controls which provide better suspension performance. In addition, the third controller, which is an intelligent fuzzy-hybrid control system, is used to optimize the suspension performance. The results from this intelligent system are compared with the two traditional control methods (skyhook and hybrid controls) under bump, sinusoidal and random excitations. It is shown that the proposed controller can enhance simultaneously the vehicle ride and handling characteristics.
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Karlén, Anton. "RC-TMV : Remote Controlled Tracked Multipurpose Vehicle." Thesis, KTH, Mekatronik, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-295799.

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This project seeks to design and construct a track-driven radio controlled vehicle and controller. The purpose is to research if radio can be effectively used to control the robot remotely, as well as research to what extent a tracked design increases the mobility when compared to a wheel-design. The prototype consists of two parts: Vehicle and controller. The vehicle is track-driven with two DC-engines connected by H-bridge. A receiver is fitted to the vehicle. The controller consists of two joysticks, a linear potentiometer as well as a transmitter. Testing was performed by driving the vehicle on different terrain.The results show that it is possible to control via RC and that the vehicle had increased mobility compared to wheeled designs. Two problems were identified: Firstly, the tracks used lacks friction, causing the vehicle to glide when attempting to climb certain objects. Secondly, due to the design of the chassis, objects contact the chassis body instead of the tracks. Causing the vehicle to stall.
Detta projekt menar att designa samt konstruera ett banddrivet radiostyrt fordon och tillhörande kontroll. Syftet med detta är att forska om radiostyrning kan effektivt användas för fjärrstyrning och för att undersöka om band-drift ökar fordonets rörlighet jämfört med hjuldrivna motsvarigheter. Prototypen består av två delar; fordon och kontroll. Fordonet är band-drivet med två DC-motorer med högt drivmoment kopplade till en H-brygga. En mottagare är monterad på fordonet. Kontrollen består av två joysticks, en linjärpotentiometer samt en sändare. Testen genomfördes genom att låta fordonet köra över olika terräng. Resultaten av testerna visade att det är möjligt att fjärrstyra med RC samt att fordonet hade ökad rörlighet jämfört med hjuldrivna motsvarigheter. Två problem identifierades under testen. Banden saknar friktion och glider ibland i stället för att klättra över hinder. På grund av chassits form kolliderade ibland objekt med chassit före banden vilket stoppade fordonet.
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Johnson, Christopher Patrick. "Comparative Analysis of Lightweight Robotic Wheeled and Tracked Vehicle." Thesis, Virginia Tech, 2012. http://hdl.handle.net/10919/76994.

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This study focuses on conducting a benchmarking analysis for light wheeled and tracked robotic vehicles. Vehicle mobility has long been a key aspect of research for many organizations. According to the Department of Defense vehicle mobility is defined as, "the overall capacity to move from place to place while retaining its ability to perform its primary mission"[1]. Until recently this definition has been applied exclusively to large scale wheeled and tracked vehicles. With new development lightweight ground vehicles designed for military and space exploration applications, the meaning of vehicle mobility must be revised and the tools at our disposal for evaluating mobility must also be expanded. In this context a significant gap in research is present and the main goal of this thesis is to help fill the void in knowledge regarding small robotic vehicle mobility assessment. Another important aspect of any vehicle is energy efficiency. Thus, another aim of this study is to compare the energy needs for a wheeled versus tracked robot, while performing similar tasks. The first stage of the research is a comprehensive review of the state-of-the-art in vehicle mobility assessment. From this review, a mobility assessment criterion for light robots will be developed. The second stage will be outfitting a light robotic vehicle with a sensor suite capable of capturing relevant mobility criteria. The third stage of this study will be an experimental investigation of the mobility capability of the vehicle. Finally the fourth stage will include quantitative and qualitative evaluation of the benchmarking study.
Master of Science
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Kanarat, Amnart. "Modeling and Simulation of a Multi-Unit Tracked Vehicle." Thesis, Virginia Tech, 1999. http://hdl.handle.net/10919/9755.

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A multi-unit tracked vehicle such as a continuous haulage system is widely used in underground mining applications due to its high mobility and payload capacity on rugged and soft terrain. To automate such a system, a high fidelity model of a tracked vehicle is essential in designing a controller for each tracked vehicle in the system, and a system model is required to simulate its response to input commands. This thesis presents the 2-D mathematical models of a tracked vehicle and a multi-unit tracked vehicle. All existing track-terrain interaction models are investigated and modified. By employing the modified track-terrain interaction model and applying Newton's second law of motion, the equations of motion of both single and multi-unit tracked vehicles can be derived. Computer programs for simulating the motions of these tracked vehicles on level ground have been implemented on a digital computer based on the derived system of differential equations. The fourth-order Runge-Kutta and Keun's methods are adopted to numerically integrate these differential equations. The simulation results clearly show that the programs can accurately predict the motion of a tracked vehicle maneuvered on horizontal plane, and closely predict the response of a multi-unit tracked vehicle operated on level ground its command inputs.
Master of Science
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Kirimlioglu, Serdar. "Multisensor Dead Reckoning Navigation On A Tracked Vehicle Using Kalman Filter." Master's thesis, METU, 2012. http://etd.lib.metu.edu.tr/upload/12614939/index.pdf.

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The aim of this thesis is to write a multisensor navigation algorithm and to design a test setup. After doing these, test the algorithm by using the test setup. In navigation, dead reckoning is a procedure to calculate the position from initial position with some measured inputs. These measurements do not include absolute position data. Using only an inertial measurement unit is an example for dead reckoning navigation. Calculating position and velocity with the inertial measurement unit is highly erroneous because, this calculation requires integration of acceleration data. Integration means accumulation of errors as time goes. For example, a constant acceleration error of 0.1 m/s^2 on 1 m/s^2 of acceleration will lead to 10% of position error in only 5 seconds. In addition to this, wrong calculation of attitude is going to blow the accumulated position errors. However, solving the navigation equations while knowing the initial position and the IMU readings is possible, the IMU is not used solely in practice. In literature, there are studies about this topic and in these studies
some other sensors aid the navigation calculations. The aiding or fusion of sensors is accomplished via Kalman filter. In this thesis, a navigation algorithm and a sensor fusion algorithm were written. The sensor fusion algorithm is based on estimation of IMU errors by use of a Kalman filter. The design of Kalman filter is possible after deriving the mathematical model of error propagation of mechanization equations. For the sensor fusion, an IMU, two incremental encoders and a digital compass were utilized. The digital compass outputs the orientation data directly (without integration). In order to find the position, encoder data is calculated in dead reckoning sense. The sensor triplet aids the IMU which calculates position data by integrations. In order to mount these four sensors, an unmanned tracked vehicle prototype was manufactured. For data acquisition, an xPC&ndash
Target system was set. After planning the test procedure, the tests were performed. In the tests, different paths for different sensor fusion algorithms were experimented. The results were recorded in a computer and a number of figures were plotted in order to analyze the results. The results illustrate the benefit of sensor fusion and how much feedback sensor fusion is better than feed forward sensor fusion.
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Wang, Kun. "Dynamic analysis of a tracked snowplowing vehicle and assessment of ride quality." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape17/PQDD_0007/MQ39481.pdf.

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Keese, William. "A Remotely Operated Multi-Tracked Vehicle for Subterranean Exploration of Gopher Tortoise Burrows." Scholar Commons, 2011. http://scholarcommons.usf.edu/etd/3179.

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The gopher tortoise is a land tortoise living in the southeastern United States. It is a species in decline and is listed as threatened or endangered in six different states. The gopher (as commonly referred) digs burrows that it uses for many reasons and spends most of its time underground. Problems occur when trying to estimate a population because a gopher tortoise digs more than one burrow. This thesis demonstrates an innovative way to survey and investigate a gopher tortoise burrow hole by using a multi-tracked remotely operated vehicle. The vehicle carried two cameras (fore and aft) and was equipped with a microphone and LED illumination. It has tracks on four sides to increase its propulsion ratio. Its performance was evaluated in a sand pit where parameters such as incline could be controlled, and in an actual tortoise burrow. This research was done in conjunction with the Hillsborough County Parks and Recreation Department.
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Sebastian, Bijo. "Traversability Estimation Techniques for Improved Navigation of Tracked Mobile Robots." Diss., Virginia Tech, 2019. http://hdl.handle.net/10919/94629.

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The focus of this dissertation is to improve autonomous navigation in unstructured terrain conditions, with specific application to unmanned casualty extraction in disaster scenarios. Robotic systems are being widely employed for search and rescue applications, especially in disaster scenarios. But a majority of these are focused solely on the search aspect of the problem. This dissertation proposes a conceptual design of a Semi-Autonomous Victim Extraction Robot (SAVER) capable of safe and effective unmanned casualty extraction, thereby reducing the risk to the lives of first responders. In addition, the proposed design addresses the limitations of existing state-of-the-art rescue robots specifically in the aspect of head and neck stabilization as well as fast and safe evacuation. One of the primary capabilities needed for effective casualty extraction is reliable navigation in unstructured terrain conditions. Autonomous navigation in unstructured terrain, particularly for systems with tracked locomotion mode involves unique challenges in path planning and trajectory tracking. The dynamics of robot-terrain interaction, along with additional factors such as slip experienced by the vehicle, slope of the terrain, and actuator limitations of the robotic system, need to be taken into consideration. To realize these capabilities, this dissertation proposes a hybrid navigation architecture that employs a physics engine to perform fast and accurate state expansion inside a graph-based planner. Tracked skid-steer systems experience significant slip, especially while turning. This greatly affects the trajectory tracking accuracy of the robot. In order to enable efficient trajectory tracking in varying terrain conditions, this dissertation proposes the use of an active disturbance rejection controller. The proposed controller is capable of estimating and counter acting the effects of slip in real-time to improve trajectory tracking. As an extension of the above application, this dissertation also proposes the use of support vector machine architecture to perform terrain identification, solely based on the estimated slip parameters. Combining all of the above techniques, an overall architecture is proposed to assist and inform tele-operation of tracked robotic systems in unstructured terrain conditions. All of the above proposed techniques have been validated through simulations and experiments in indoor and simple outdoor terrain conditions.
Doctor of Philosophy
This dissertation explores ways to improve autonomous navigation in unstructured terrain conditions, with specific applications to unmanned casualty extraction in disaster scenarios. Search and rescue applications often put the lives of first responders at risk. Using robotic systems for human rescue in disaster scenarios can keep first responders out of danger. To enable safe robotic casualty extraction, this dissertation proposes a novel rescue robot design concept named SAVER. The proposed design concept consists of several subsystems including a declining stretcher bed, head and neck support system, and robotic arms that conceptually enable safe casualty manipulation and extraction based on high-level commands issued by a remote operator. In order to enable autonomous navigation of the proposed conceptual system in challenging outdoor terrain conditions, this dissertation proposes improvements in planning, trajectory tracking control and terrain estimation. The proposed techniques are able to take into account the dynamic effects of robot-terrain interaction including slip experienced by the vehicle, slope of the terrain and actuator limitations. The proposed techniques have been validated through simulations and experiments in indoor and simple outdoor terrain conditions. The applicability of the above techniques in improving tele-operation of rescue robotic systems in unstructured terrain is also discussed at the end of this dissertation.
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Saidane, Chiheb. "Decision support system for the management of an Army's tracked and wheeled vehicle fleet." Thesis, Monterey, Calif. : Naval Postgraduate School, 2007. http://bosun.nps.edu/uhtbin/hyperion.exe/07Mar%5FSaidane.pdf.

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Thesis (M.S. in Computer Science)--Naval Postgraduate School, March 2007.
Thesis Advisor(s): Man-Tak Shing, Arijit Das. "March 2007." Includes bibliographical references (p.85-86). Also available in print.
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Mezacasa, Nathan. "Metodologia para simulação dinâmica e otimização de veículos de esteira." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2018. http://hdl.handle.net/10183/179570.

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Devido as severas condições as quais veículos militares blindados de esteira são submetidos, o desenvolvimento de modelos que representam o comportamento dinâmico destes veículos torna-se imprescindível, para além da possibilidade de avaliação das intensidades das vibrações ocorrendo na cabine, ser possível criar veículos que tenham vantagens na mobilidade, fator esse que engloba tanto a transposição de obstáculos, como a rodagem em condições menos severas, e por fim, no tempo e na exatidão dos disparos, afetada pelas respostas dinâmicas que o veículo fornece. Para ser possível encontrar um veículo que desempenhe tais condições de forma satisfatória, apenas modelos que representem adequadamente as suas propriedades, apresentando respostas das acelerações e deslocamentos, não são suficientes. O objetivo deste trabalho é o desenvolvimento de um modelo numérico que tenha a capacidade de simular as condições dinâmicas extremas as quais um veículo de esteira é induzido, e também, otimizar o modelo, com a finalidade de encontrar molas e amortecedores capazes de proporcionar respostas adequadas às funções custo desenvolvidas. Estas funções objetivo são definidas como a combinação linear da aceleração e deslocamento, verticais e rotacionais, em conjunto de restrições impostas, objetivando encontrar uma combinação ideal para mobilidade, tempo e exatidão nos disparos e por fim, molas e amortecedores adequados as condições de logística Para proposta deste estudo, um modelo matemático 2D e um 3D, de um veículo de esteira, foi desenvolvido. O modelo possibilita a avaliação dos graus de liberdade de deslocamento vertical das massas não suspensas e do deslocamento vertical, arfagem e rolagem da massa suspensa. Os efeitos da esteira são modelados como molas verticais lineares exercendo uma força de restauração para alinhar as rodas de rodagem, proporcional ao deslocamento relativo entre essas rodas. A otimização é feita através de ferramentas numéricas presentes no software comercial Simulink, sendo necessário o desenvolvimento das funções custo que caracterizem os objetivos ideais para cada tipo de análise. Os resultados de simulações numéricas sob a forma de cursos de deslocamento de pontos característicos do casco e deslocamentos dos eixos de rodas em um sistema de coordenadas de referência assumido, também estão incluídos, bem como as quantidades de valor RMS de cada uma das respostas, comparando um veículo padrão, com o veículo com a suspensão otimizada.
Due to the severe conditions in which armored military vehicles are submitted, the development of models that represent the dynamic behavior of these vehicles becomes essential, besides the possibility of evaluating the vibration intensities occurring in the cabin, to be possible to create vehicles that have mobility a factor that encompasses both the transposition of obstacles, and the shooting in less severe conditions, and finally, in the time and accuracy of the shots, affected by the dynamic responses that the vehicle provides. In order to be able to find a vehicle that fulfills these conditions satisfactorily, only models that adequately represent its properties, presenting responses of the accelerations and displacements, are not enough. The objective of this work is the development of a numerical model that has the ability to simulate extreme dynamic conditions such as a tracked vehicle is induced, and also to optimize the model with the purpose of finding springs and shock absorbers capable of adequate alternative answers cost functions developed. These are the goals defined as a linear combination of acceleration and displacement, vertical and rotational, together imposed constraints, aiming to find an ideal combination for mobility, time and precision in the shots and, finally, springs and dampers suitable as logistics conditions To propose this study, a 2D and 3D mathematical model of a tracked vehicle were developed. The model allows the evaluation of the degrees of freedom of vertical displacement of the non-suspended masses and the vertical displacement, pitch and roll of the suspended mass. The effects of the track are modeled as linear vertical springs exerting a restoring force to align the road wheels, proportional to the relative displacement between these wheels. The optimization is done through numerical tools present in Simulink software, and it is necessary to develop cost functions that characterize the ideal objectives for each type of analysis. The results of numerical simulations in the form of displacement courses of characteristic hull points and wheel axle displacements in an assumed reference coordinate system are also included, as well as the RMS value quantities of each of the responses, comparing a standard vehicle with the optimized suspension.
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Books on the topic "Tracked vehicle"

1

Nawrat. M, Aleksander M., ed. Innovative Control Systems for Tracked Vehicle Platforms. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-04624-2.

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Croizat, Victor. Across the reef: The amphibious tracked vehicle at war. London: Blandford, 1989.

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Croizat, Victor J. Across the reef: The amphibious tracked vehicle at war. Blandford: Arms and Armour Press, 1989.

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Thurow, Thomas L. Tracked vehicle traffic effects on the hydrologic characteristics of central Texas rangeland. [Champaign, IL]: US Army Corps of Engineers, Construction Engineering Research Laboratories, 1995.

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Michael, Green. Assault amphibian vehicles: The AAVs. Mankato, Minn: Capstone Press, 2004.

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Ding, Faqian. Lu dai shi zhuang jia che liang xuan gua xi tong dong li xue: Dynamics of tracked armored vehicle suspension system. Beijing: Guo fang gong ye chu ban she, 2004.

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Office, General Accounting. Army budget: Potential reductions in Tracked Combat Vehicle programs : briefing report to the Chairmen, Subcommittees on Defense, Senate and House Committees on Appropriations. Washington, D.C: The Office, 1990.

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Office, General Accounting. Army budget: Potential reductions to tracked and wheeled vehicles budgets : report to the chairmen, Subcommittees on Defense, Senate and House Committees on Appropriations. Washington, D.C: The Office, 1989.

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Tracked vehicles. Vero Beach, Fla: Rourke Enterprises, 1989.

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Crismon, Fred. U.S. military tracked vehicles. Osceola, WI, USA: Motorbooks International, 1992.

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Book chapters on the topic "Tracked vehicle"

1

Yin, H. B., and Peng-Li Shao. "Dynamic Performance Simulation of a Tracked Vehicle with ADAMS Tracked Vehicle Toolkit Software." In Lecture Notes in Computer Science, 553–58. Berlin, Heidelberg: Springer Berlin Heidelberg, 2005. http://dx.doi.org/10.1007/978-3-540-30585-9_62.

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Hirose, Shigeo, Jun Miyake, and Sanehito Aoki. "Terrain Adaptive Tracked Vehicle HELIOS-I." In Advanced Robotics: 1989, 676–87. Berlin, Heidelberg: Springer Berlin Heidelberg, 1989. http://dx.doi.org/10.1007/978-3-642-83957-3_46.

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Choi, Kyung K., J. Kirk Wu, Kuang-Hua Chang, Jun Tang, Jia-Yi Wang, and Edward J. Haug. "Large Scale Tracked Vehicle Concurrent Engineering Environment." In Advances in Structural Optimization, 447–82. Dordrecht: Springer Netherlands, 1995. http://dx.doi.org/10.1007/978-94-011-0453-1_13.

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Barnat, Wiesław, and Aleksander M. Nawrat. "The Influence the Location of Large Charge on Behaviour Special Vehicles SHIBA and AV (Armoured Vehicle)." In Innovative Control Systems for Tracked Vehicle Platforms, 299–322. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-04624-2_18.

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Sobel, Dawid, Karol Jędrasiak, Krzysztof Daniec, Józef Wrona, Piotr Jurgaś, and Aleksander M. Nawrat. "Camera Calibration for Tracked Vehicles Augmented Reality Applications." In Innovative Control Systems for Tracked Vehicle Platforms, 147–62. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-04624-2_8.

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Babiarz, Artur, Radosław Zawiski, Michał Skrzypek, and Aleksander M. Nawrat. "Control System of Mobile Robot Group." In Innovative Control Systems for Tracked Vehicle Platforms, 3–18. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-04624-2_1.

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Krupanek, Beata. "Simulations and Analysis of Performance Algorithms Used in Wireless Networks and Measurement Systems." In Innovative Control Systems for Tracked Vehicle Platforms, 175–87. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-04624-2_10.

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Wochlik, Ireneusz, Jarosław Bułka, Łukasz Folwarczny, Krzysztof Daniec, Karol Jędrasiak, Roman Koteras, and Aleksander M. Nawrat. "Application of Telemedical Technologies in Remote Evaluation of Soldiers’ Vital Signs during Training and in Combat Conditions." In Innovative Control Systems for Tracked Vehicle Platforms, 189–202. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-04624-2_11.

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Nabagło, Tomasz, Janusz Kowal, and Andrzej Jurkiewicz. "High Fidelity Model Construction and Its Verification Based on 2S1 Tracked Vehicle." In Innovative Control Systems for Tracked Vehicle Platforms, 205–15. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-04624-2_12.

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Nabagło, Tomasz, Andrzej Jurkiewicz, Marcin Apostoł, and Piotr Micek. "Modification of 2S1 Tracked Vehicle Suspension System for Improving Its Performance and Safety." In Innovative Control Systems for Tracked Vehicle Platforms, 217–26. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-04624-2_13.

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Conference papers on the topic "Tracked vehicle"

1

Akcabay, Deniz T., N. C. Perkins, and Zheng-Dong Ma. "Predicting the Mobility of Tracked Robotic Vehicles." In ASME 2004 International Mechanical Engineering Congress and Exposition. ASMEDC, 2004. http://dx.doi.org/10.1115/imece2004-60877.

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Robotic vehicles are an attractive alternative to manned vehicles in hazardous or dangerous off road and urban environments. Present designs of robot vehicles employ wheels or tracks as the running gears and, in general, tracks provide superior mobility on rough or uneven terrain. This paper presents a multibody dynamics model of a tracked robotic vehicle for the purpose of predicting mobility in two different scenarios: 1) steep terrains, and 2) urban terrains in the form of staircases. In both scenarios we study the physical limitations on vehicle mobility imposed by key vehicle design variables and vehicle operating conditions. Example vehicle design variables include the location of the mass center, grouser penetration, and track/terrain friction. Example vehicle operating conditions include climbing under full versus partial track/terrain contact, and climbing on straight versus switch back courses.
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Sandu, Corina, and Jeffrey S. Freeman. "Three-Dimensional Multibody Tracked Vehicle Modeling and Simulation." In ASME 2003 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2003. http://dx.doi.org/10.1115/detc2003/vib-48359.

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Off-road vehicles have broad areas of application (in agriculture, in the construction industry, in the transport industry, in the military, in the U.S. space programs, in the oil and gas industry). A large segment of the off-road vehicles is made up by the tracked vehicles. The purpose of this study is to develop and implement an independent vehicle model. The vehicle model is general, in the sense that it is not restricted to a specific vehicle; it can model vehicles with varying numbers of road wheels, or different suspension characteristics It can be used, together with a track model, to analyze several types of tracked vehicles. A recursive dynamics formulation approach is used to model the vehicle. All the computations are performed in relative coordinates. The kinematic formulation of the model is presented, as well as the dynamic analysis, including the external and the internal applied forces. Dynamic settling simulations of the vehicle model on several types of soil are presented. The vehicle model presented in this study serves as a support, to help testing and comparing different track models and track-terrain interaction formulations.
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Lin, Jun, and Andrew A. Goldenberg. "Conceptual Design of a Variable Configuration Articulated Tracked Vehicle." In ASME 2009 International Mechanical Engineering Congress and Exposition. ASMEDC, 2009. http://dx.doi.org/10.1115/imece2009-11668.

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This paper presents a conceptual design for variable configurations articulated tracked vehicle (LMA) [1] that has active adaptability to suit for rough and unpredictable terrains, including stairways, obstacles and ditches. The active terrain adaptability is performed by a track configuration-controlling mechanism which is a simple 3-bar cam mechanism consisting of 2 moving elements and a cam fixedly mounted on the vehicle’s chassis. The mechanism has three functions: (1) ensuring the center of a planetary wheel mounted on the end of the track configuration-controlling mechanism to move along an exactly elliptic path; (2) providing the tracks with a continuously invariable spring force to tension tracks; and (3) changing and adjusting the center of gravity of the robot system to prevent it turning over from stairs.
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Huh, Kunsoo, Chung Choo Chung, and Mun-Suk Suh. "Experimental Evaluation of a Track Tension Controller in Tracked Vehicles." In ASME 2004 International Mechanical Engineering Congress and Exposition. ASMEDC, 2004. http://dx.doi.org/10.1115/imece2004-59450.

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Track tension is closely related to the maneuverability of tracked vehicles and the durability of their tracks and suspension systems. The tension needs to be maintained at an optimum level throughout the maneuver in order to minimize the excessive load on the tracks and to prevent track peel-off from the sprocket. In this paper, a track tension control system is developed for tracked vehicles which are subject to various maneuvering tasks. It consists of track tension estimator, track tension controller and hydraulic unit. The tension around the idler and sprocket is estimated in real-time, respectively. Using the estimated track tension and considering the highly nonlinear vehicle characteristics, a fuzzy logic controller is designed in order to control the track tension in the vehicles. The performance of the proposed tension control system is verified through experimental field tests.
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Sojka, Michal, and Stefan Cornak. "Tracked vehicle movement modelling." In 17th International Scientific Conference Engineering for Rural Development. Latvia University of Agriculture, 2018. http://dx.doi.org/10.22616/erdev2018.17.n358.

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Bhatia, Vardaan. "Hybrid tracked combat vehicle." In 2015 IEEE International Transportation Electrification Conference (ITEC). IEEE, 2015. http://dx.doi.org/10.1109/itec-india.2015.7386862.

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Shabana, A. A., J. H. Choi, and H. C. Lee. "Nonlinear Dynamics and Vibrations of Three Dimensional Multibody Tracked Vehicles." In ASME 1996 Design Engineering Technical Conferences and Computers in Engineering Conference. American Society of Mechanical Engineers, 1996. http://dx.doi.org/10.1115/96-detc/mech-1186.

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Abstract A three dimensional model that includes significant details is developed for the nonlinear dynamic analysis of large scale multi-body tracked vehicle systems. In this model, the joint articulations of the track chains are taken into consideration so as to allow the developement of a computational procedure for the analysis of the vibrations and the contact forces of the multibody tracked vehicles. The three dimensional vehicle system is assumed to consist of three kinematically decoupled subsystems which include the chassis subsystem, and two track subsystems. A recursive approach for formulating the nonlinear equations of the vehicle based on the velocity transformation is used in this investigation in order to reduce the number of equations, avoid the solution of a system of differential and algebraic equations, and avoid the use of nonholonomic constraints to describe the rotations of the sprockets. The singular configurations of the closed kinematic chains of the tracks are also avoided by using a penalty function approach to define the constraint forces at selected secondary joints of the tracks. Detailed three dimensional nonlinear contact force models that describe the interaction between the track links and the vehicle components such as the rollers, sprockets, and idlers as well as the interaction between the track links and the ground are developed and used to define the generalized contact forces associated with the vehicle generalized coordinates. In particular, body and surface coordinate systems are introduced in order to define the spatial contact conditions that describe the dynamic interaction between the teeth of the sprockets and the track link pins. These conditions provide the forces necessary for driving the tracked vehicle. The effect of the tangential friction forces on the stability of the motion of the vehicle is also discussed in this investigation. A computer simulation of a tracked vehicle that consists of one hundred and six bodies and has one hundred and twenty degrees of freedom is presented in order to demonstrate the use of the formulations presented in this study. A simple formula that can be used to predict the steady state velocity of the vehicle when the sprockets rotate with a constant angular velocity is presented and used to verify the numerical results obtained from the nonlinear dynamic simulation of the multibody vehicle.
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Ricoy, Santiago, Leonardo Georgescu, and Paul Oh. "Personal tracked vehicle autonomy platform." In 2018 IEEE International Conference on Consumer Electronics (ICCE). IEEE, 2018. http://dx.doi.org/10.1109/icce.2018.8326355.

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Wasfy, Tamer M., and James O’Kins. "Finite Element Modeling of the Dynamic Response of Tracked Vehicles." In ASME 2009 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2009. http://dx.doi.org/10.1115/detc2009-86563.

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A time-accurate finite element model for predicting the dynamic response of tracked vehicles is presented. The model supports flexible continuous belt-type tracks and segmented-tracks consisting of rigid and/or flexible links connected using revolute joints. The flexible multibody system representing the tracked vehicle is modeled using rigid bodies, flexible bodies, joints and actuators. Flexible bodies are modeled using total-Lagrangian brick, membrane, beam, truss and linear/rotational spring elements. The penalty method is used to impose the joint/contact constraints. An asperity-based friction model is used to model joint/contact friction. A recursive bounding box contact search algorithm is used to allow fast contact detection between finite elements and other elements as well as general triangular/quadrilateral surfaces. The governing equations of motion are solved along with joint/constraint equations using a time-accurate explicit solution procedure. The model can help improve the design of tracked vehicles including increasing the vehicle’s stability and durability.
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Stanciu, Rares, and Ciprian Sorandaru. "Low-cost visually servoed tracked vehicle." In IEEE EUROCON 2017 -17th International Conference on Smart Technologies. IEEE, 2017. http://dx.doi.org/10.1109/eurocon.2017.8011197.

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Reports on the topic "Tracked vehicle"

1

Boyd, Kenneth L. Wheeled versus Tracked Vehicle Study. Fort Belvoir, VA: Defense Technical Information Center, March 1985. http://dx.doi.org/10.21236/ada166390.

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Pharaon, Jean W. Tracked Vehicle Road Wheel Puller. Fort Belvoir, VA: Defense Technical Information Center, February 2009. http://dx.doi.org/10.21236/ada496121.

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YUMA PROVING GROUND AZ. Wheeled and Tracked Vehicle Air Cleaner Adequacy. Fort Belvoir, VA: Defense Technical Information Center, January 1989. http://dx.doi.org/10.21236/ada203374.

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Galaitsis, Anthony G., and William B. Coney. Recent Advances in the Prediction of Tracked Vehicle Seismic Signatures. Fort Belvoir, VA: Defense Technical Information Center, September 1999. http://dx.doi.org/10.21236/ada393571.

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DEFENSE SCIENCE BOARD WASHINGTON DC. Report of the Defense Science Board Task Force on Tracked Vehicle Industrial Base. Fort Belvoir, VA: Defense Technical Information Center, April 1994. http://dx.doi.org/10.21236/ada286415.

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Garten, C. T. ,JR. Effects of Heavy, Tracked-Vehicle Disturbance on Forest Soil Properties at Fort Benning, Georgia. Office of Scientific and Technical Information (OSTI), May 2004. http://dx.doi.org/10.2172/885662.

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Foote, A. L. Design, Fabrication, and Testing of a Composite Hull for a Tracked Amphibious Vehicle. Volume 1. Fort Belvoir, VA: Defense Technical Information Center, January 1989. http://dx.doi.org/10.21236/ada204901.

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Guyer, Craig, Roger Birkhead, and Harold Balbach. Effects of Tracked-Vehicle Training Activity on Gopher Tortoise (Gopherus polyphemus) Behavior at Fort Benning, GA. Fort Belvoir, VA: Defense Technical Information Center, April 2006. http://dx.doi.org/10.21236/ada467989.

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Cook, Joshua, Laura Ray, and James Lever. Dynamics modeling and robotic-assist, leader-follower control of tractor convoys. Engineer Research and Development Center (U.S.), February 2022. http://dx.doi.org/10.21079/11681/43202.

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This paper proposes a generalized dynamics model and a leader-follower control architecture for skid-steered tracked vehicles towing polar sleds. The model couples existing formulations in the literature for the powertrain components with the vehicle-terrain interaction to capture the salient features of terrain trafficability and predict the vehicles response. This coupling is essential for making realistic predictions of the vehicles traversing capabilities due to the power-load relationship at the engine output. The objective of the model is to capture adequate fidelity of the powertrain and off-road vehicle dynamics while minimizing the computational cost for model based design of leader-follower control algorithms. The leader-follower control architecture presented proposes maintaining a flexible formation by using a look-ahead technique along with a way point following strategy. Results simulate one leader-follower tractor pair where the leader is forced to take an abrupt turn and experiences large oscillations of its drawbar arm indicating potential payload instability. However, the follower tractor maintains the flexible formation but keeps its payload stable. This highlights the robustness of the proposed approach where the follower vehicle can reject errors in human leader driving.
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Drummond, Colin K., Mark S. Rice, and Paul Bode. Engineering Design Study for the Adaptation, Assembly, and Installation of a Regenerative Mechanical Differential Steer Unit for Tracked Amphibious Vehicle. Fort Belvoir, VA: Defense Technical Information Center, February 1987. http://dx.doi.org/10.21236/ada204910.

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