Academic literature on the topic 'Three-axle road train model'

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Journal articles on the topic "Three-axle road train model"

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Tatievskyi, Dmitry. "SYNTHESIS OF THE LAWS GOVERNING THE NON-HOLONOMIC MODEL OF A TWO-LINK ROAD TRAIN WITH REVERSE MOTION (OFF-AXLE HITCHING MODEL)." EUREKA: Physics and Engineering 2 (March 30, 2018): 40–51. http://dx.doi.org/10.21303/2461-4262.2018.00592.

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The complexity of the control of the road train is due to the pronounced nonlinearities, as well as the instability of the control object during the movement in the backward motion (jackknifing). For the road trains, the location of the towing device behind the tractor's rear axle is quite typical. In this study, a synthesis of control laws for road trains with offset of coupling devices relative to the rear axle of the tractor (off-axle hitching) is proposed. The controllers have been implemented both to ensure a stable circular motion and for rectilinear motion with a given orientation angle
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Dmitry, Tatievskyi. "SYNTHESIS OF THE LAWS GOVERNING THE NON-HOLONOMIC MODEL OF A TWO-LINK ROAD TRAIN WITH REVERSE MOTION (OFF-AXLE HITCHING MODEL)." EUREKA: Physics and Engineering, no. 2 (March 30, 2018): 40–51. https://doi.org/10.21303/2461-4262.2018.00592.

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The complexity of the control of the road train is due to the pronounced nonlinearities, as well as the instability of the control object during the movement in the backward motion (jackknifing). For the road trains, the location of the towing device behind the tractor's rear axle is quite typical. In this study, a synthesis of control laws for road trains with offset of coupling devices relative to the rear axle of the tractor (off-axle hitching) is proposed. The controllers have been implemented both to ensure a stable circular motion and for rectilinear motion with a given orientation a
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Sakhno, Vladimir, Juraj Gerlici, Viktor Poliakov, Alexandr Kravchenko, Oleg Omelnitcky, and Tomas Lack. "Road train motion stability in BRT system." MATEC Web of Conferences 254 (2019): 03007. http://dx.doi.org/10.1051/matecconf/201925403007.

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The peculiarities of organization and perspectives of mass passenger transportation in the city and beyond are considered with the use of "Bus Rapid Transport" (BRT) or Metrobus. Different aspects of study of motor vehicles (MV) controllability and stability are analyzed. It is substantiated that it is sufficient to consider the potential stability of the MV itself, in order to guarantee the stability of the "driver MV" system with a large reserve. A mathematical model of a three-axle bus train consisting of a bus and two trains (metrobus) is developed and the factors influencing the critical
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MARCHUK, Roman, Volodymyr SAKHNO, Iryna CHOVCHA, Nazar MARCHUK, and Mykola MARCHUK. "TO DETERMINE STABILITY OF THE ROAD TRAIN WITH O1-CATEGORY TRAILER." Scientific Journal of Silesian University of Technology. Series Transport 119 (June 1, 2023): 159–70. http://dx.doi.org/10.20858/sjsutst.2023.119.9.

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In the work improved system of equation of plane-parallel movement of the road train with single-axle O1-category trailer. Defined lateral reactions on the vehicle and trailer wheels at body roll, wheels slip caused by body roll and also developed road train spatial mathematical model in a transverse plane. This model is used to study the road train course stability with O1-category trailer. It is shown that the spatial model of road train with no vehicle and trailer wheels inclination has the same divergent instability characteristic as the plane road train layout.
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Liu, Jing, Xinbin Li, and Wennian Yu. "Vibration analysis of the axle bearings considering the combined errors for a high-speed train." Proceedings of the Institution of Mechanical Engineers, Part K: Journal of Multi-body Dynamics 234, no. 3 (2020): 481–97. http://dx.doi.org/10.1177/1464419320917235.

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Axle bearings are critical elements of high-speed trains. Although the quality and precision of axle bearings have been significantly improved, the manufacturing errors, such as the roundness and waviness errors, cannot be eliminated during their manufacturing processes. The axle bearings with the roundness and waviness errors have great influences on vibration performances of the high-speed trains. To obtain an in-depth understanding of the vibrations caused by the axle bearing with the combined errors considering both the roundness and waviness errors. This work conducts an improved analytic
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Dmitry, Tatievskyi. "REALIZATION OF REVERSE MOTION OF THE MODEL OF A SEMITRAILER ROAD TRAIN." EUREKA: Physics and Engineering, no. 3 (May 31, 2018): 59–66. https://doi.org/10.21303/2461-4262.2018.00644.

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The complexity of controlling the road train is due to pronounced nonlinearities, as well as the instability of the control object under reverse motion, often leading to a phenomenon known as jackknifing. Because of this, the task of controlling their motion is relevant, both from the theoretical point of view and from the point of view of the practical implementation of software motion with given constraints. The task of controlling the motion of a road train with a semitrailer under the assumption of non-holonomic constraints (the absence of lateral slippage of support wheels) has a great th
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Zinko, R., O. Lanets, and Y. Skvarok. "Modeling of three-link road trains." IOP Conference Series: Materials Science and Engineering 1277, no. 1 (2023): 012027. http://dx.doi.org/10.1088/1757-899x/1277/1/012027.

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Abstract It is proposed to use graphs for developing the mathematical model of multi-link road trains with coupling devices of different designs. The calculation scheme is formed on the basis of the structure graph of the multi-link road train construction scheme. Next, the structure graph of the mathematical model generalized coordinates levels is written. This allows to develop the mathematical model of appropriate complexity depending on the research objectives. The developed mathematical motion model of a multi-link road train with an elastic-damping joints of their main elements was repre
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Tatievskyi, Dmitry. "REALIZATION OF REVERSE MOTION OF THE MODEL OF A SEMITRAILER ROAD TRAIN." EUREKA: Physics and Engineering 3 (May 31, 2018): 59–66. http://dx.doi.org/10.21303/2461-4262.2018.00644.

Full text
Abstract:
The complexity of controlling the road train is due to pronounced nonlinearities, as well as the instability of the control object under reverse motion, often leading to a phenomenon known as jackknifing. Because of this, the task of controlling their motion is relevant, both from the theoretical point of view and from the point of view of the practical implementation of software motion with given constraints. The task of controlling the motion of a road train with a semitrailer under the assumption of non-holonomic constraints (the absence of lateral slippage of support wheels) has a great th
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Gorelov, V. A., K. B. Yevseyev, O. I. Chudakov, and K. S. Balkovskiy. "Evaluation of indicators of curvilinear movement of a road train using mathematical simulation." Izvestia MGTU MAMI 1, no. 4 (2020): 2–15. http://dx.doi.org/10.31992/2074-0530-2020-46-4-2-15.

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Introduction: a widespread approach to the transportation of large-sized and heavy-weight indi-visible cargo on roads and terrain is the use of multi-axle wheeled transport complexes, which are road trains. At the same time, due to the significant overall dimensions, one of the most important properties of such machines is agility, that is, the ability to move along a trajectory of large curvature in a limited area, which is especially important in loading / unloading zones. Subject of research: the article presents an approach to predicting the indicators of curvilinear movement of multi-axle
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Xu, Zhouzhou, Zixue Du, Zhen Yang, and Junchao Zhou. "Research on Vehicle-Bridge Vertical Coupling Dynamics of Monorail based on Multiple Road Excitations." Mechanics 26, no. 4 (2020): 301–10. http://dx.doi.org/10.5755/j01.mech.26.4.24399.

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In order to study the vertical dynamic behavior of the monorail-bridge system, the vehicle-bridge coupling dynamic equation and train simulation model are established based on the principle of dynamics; the train simulation model is established based on the multi-body dynamics; the track model is established based on the finite element theory, and the compression deformation of PC beam and the effect of finger band on train are equivalent to load spectrum on train axle by means of dynamic equivalence principle, and finally, the train-track interaction model is established; the vertical vibrati
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Books on the topic "Three-axle road train model"

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Skovholt, Thomas M., and Len Jennings, eds. Master Therapists. Oxford University Press, 2016. http://dx.doi.org/10.1093/med:psych/9780190496586.001.0001.

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The search for the best outcomes in psychotherapy and counseling has been a long and winding trail. Traditional research methods attempting to quantify expertise have yet to map the complex path and characteristics of expert psychotherapists and counselors. This book blazes a new trail using extensive qualitative research methods to understand psychotherapy experts. Ten peer-nominated, active practitioners representing four different professions were interviewed by three interviewers for a total of over 100 hours. Based on the data from these interviews, we offer a portrait of the master thera
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Book chapters on the topic "Three-axle road train model"

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Khoury, Muin J., Terri H. Beaty, and Bernice H. Cohen. "Epidemiologic Approaches to Familial Aggregation." In Fundamentals of Genetic Epidemiology. Oxford University PressNew York, NY, 1993. http://dx.doi.org/10.1093/oso/9780195052886.003.0006.

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Abstract The study of familial aggregation is a central theme in genetic epidemiology in which major methodologic and statistical advances have been recently made. As King and colleagues (1984) pointed out, family studies encompass three approximately sequential steps of scientific investigation. First, researchers attempt to determine whether or not there is evidence of familial aggregation in a disease or trait. If familial aggregation is found, the second step is to discriminate among environmental, cultural, and/or genetic factors that may contribute to this clustering. Third, when evidenc
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Conference papers on the topic "Three-axle road train model"

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Zuo, Jianyong, Yihao Gu, Haiying Lu, Jie Yu, and Cheng Liu. "Research on Instability Principle of Virtual Tracks Train When Braking on Curve." In ASME 2019 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/detc2019-97596.

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Abstract Virtual tracks train is a new type of rail transit, which combines traditional rail vehicles and road vehicles. In order to study the effect of braking on the stability of virtual tracks train on curve, a four-axle model with train body model, steering model, braking model and tire model was built in Matlab/Simulink to research the change of yaw velocity, lateral acceleration and vehicle speed when it brakes on curve. Through step steering test of the vehicle, the model was verified to analyze the braking stability on steady steering condition. Simulation result shows that when virtua
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Wagner, Sebastian, Stephan Zipser, Ralf Bartholomaeus, and Bernard Baeker. "A Novel Two DOF Control for Train-Like Guidance of Multiple Articulated Vehicles." In ASME 2009 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2009. http://dx.doi.org/10.1115/detc2009-86384.

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This paper presents a novel two DOF control for train-like guidance of general multiple articulated vehicles with all wheel steering. The model based control scheme consists of a feed-forward and a feedback part designed separately. Within the nonlinear feedforward part the steering angles are calculated that theoretically cause every single axle to follow a desired path exactly. Thus in the nonlinear feedback part only model uncertainties and disturbances have to be compensated. Simulations as well as road tests show that the designed control system allows train-like vehicle guidance while it
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Lewis, Edwina, Aditya Parameshwaran, Laura Redmond, and Yue Wang. "Real-time Terrain Analysis for Off-road Autonomous Vehicles." In WCX SAE World Congress Experience. SAE International, 2025. https://doi.org/10.4271/2025-01-8343.

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<div class="section abstract"><div class="htmlview paragraph">One challenge for autonomous vehicle (AV) control is the variation in road roughness which can lead to deviations from the intended course or loss of road contact while steering. The aim of this work is to develop a real-time road roughness estimation system using a Bayesian-based calibration routine that takes in axle accelerations from the vehicle and predicts the current road roughness of the terrain. The Bayesian-based calibration method has the advantage of providing posterior distributions and thus giving a quantif
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Majstorovic, Igor, Maja Ahac, and Ivo Haladin. "Speed profile calculation with an acceleration model: case study of Zagreb tramway system." In 8th International Conference on Road and Rail Infrastructure. University of Zagreb Faculty of Civil Engineering, 2024. http://dx.doi.org/10.5592/co/cetra.2024.1648.

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Knowledge of the speed profile of electric tramway vehicles is crucial for optimizing tramway traffic management procedures. This includes creating and optimizing timetables, calculating energy consumption, and maintaining rail infrastructure. The speed profile is influenced by many parameters, such as the maximum permitted speed and acceleration of the tram, the distance between stops, and the dwell time. In the past, a simplified model that assumed constant acceleration and deceleration was used to determine the speed profile of tramway vehicles. However, this model can lead to inaccuracies,
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Wang, Shanjin, and Constantin Gagiu. "A Hybrid Method for Characterization and Improvement of NVH Performance of Axle System." In 13th International Styrian Noise, Vibration & Harshness Congress: The European Automotive Noise Conference. SAE International, 2024. http://dx.doi.org/10.4271/2024-01-2950.

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<div class="section abstract"><div class="htmlview paragraph">The axle system is a major contributor for road induced vehicle interior noise. However, it is challenging to characterize the NVH performance of the axle system because it is coupled with both the tire/wheel and the body structure. In this article, we introduce a global approach to control the NVH performance of the axle system. The force transmissibility based on the blocked force concept was defined as the indicator of NVH performance of the axle system. A hybrid method combining test and simulation was developed to a
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Inderyas, Omair, Ninel Alver, and Aydın Kaya. "A deep learning based damage estimation model incorporating hybrid AE data for monitoring reinforced concrete structures." In 8th International Conference on Road and Rail Infrastructure. University of Zagreb Faculty of Civil Engineering, 2024. http://dx.doi.org/10.5592/co/cetra.2024.1580.

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The reinforced concrete structures require constant monitoring to ensure their durability and safety of the structures. Thus, it is of great importance to monitor and identify the damage in structures. From non-destructive testing methods, acoustic Emission (AE) is a well-known method used to locate cracks, and damages and provide information about the performance of the material or a structure. This study aimed to determine the damage progress within a reinforced concrete beam by incorporating all AE datasets in a hybrid deep neural network. For this, a hybrid AE dataset consisting of three d
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Wagner, Sebastian, Gunter Nitzsche, and Robert Huber. "Advanced Automatic Steering Systems for Multiple Articulated Road Vehicles." In ASME 2013 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/imece2013-62630.

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This article describes a novel automatic steering system for a 30.73m long double articulated bus equipped with three independent steer-by-wire axles. Two model-based control design approaches are proposed. The first approach uses a kinetic vehicle model to design a train-like guidance system and a force-canceling that avoids excessive mechanical stress in the joints and the chassis. While the first approach requires high computational efforts, the second approach utilizes a kinematic model to design an extended Ackermann-steering system that performs well on available electronic control units
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ELISEEV, M. E., V. S. MAKAROV, D. P. SMIRNOV, and T. N. TOMCHINSKAYA. "MODELING OF VEHICLE TRAFFIC IN AN URBAN ENVIRONMENT WITH COMPLEX TERRAIN TO DETERMINE SAFE TRAFFIC MODES UNDER VARIOUS WEATHER CONDITIONS." In GRAPHICON 2024. Omsk State Technical University, 2024. http://dx.doi.org/10.25206/978-5-8149-3873-2-2024-911-920.

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In order to ensure road safety, one of the most accident-prone areas of Nizhny Novgorod is being investigated. The site is characterized by large elevation differences and small turning radii. A three-dimensional model of this section was built and a VR simulator was developed for driver training. The ability to train drivers under different weather conditions and different road surface conditions has been implemented. To determine safe driving modes, a mathematical model was built that allows one to estimate the moment of skidding. Based on the mathematical model, the optimal speed for given
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Collins, Ryan, Himanshu Kumar Maurya, and Raj S. R. Ragul. "Self-Driving Car Using Supervised Learning." In International Research Conference on IOT, Cloud and Data Science. Trans Tech Publications Ltd, 2023. http://dx.doi.org/10.4028/p-5vztxi.

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In the growing field of autonomous driving, minimizing human errors lead to fatal accidents. Many companies and research groups have been working for years to achieve a fully autonomous vehicle. Self-driving cars are inevitably the future. The system to be implemented is to train and directly translate images from three cameras to steering commands. The proposed method is expected to work on local roads with or without lane markings. With just the images generated and the human steering angle as the training signal, the proposed method is expected to automatically recognize important road char
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Matsumura, Itaru, Kazuyoshi Nezu, Takuro Kawabata, and Yusuke Watabe. "Development of contactless measurement device for overhead contact line." In 6th International Conference on Road and Rail Infrastructure. University of Zagreb Faculty of Civil Engineering, 2021. http://dx.doi.org/10.5592/co/cetra.2020.1011.

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In order to reduce maintenance labor of overhead contact lines (OCL), a contactless measurement device for OCL was developed. This device is mounted on a roof of a vehicle of a train and measures static three-dimensional positions of wires of OCL and detects positions of OCL fittings without touching the OCL while the train is running. We proposed hybrid sensing method that combines stereo measurement by image processing with structure measurement by laser range scanners and it realized to measure OCL geometry with high-precision even in sections with complicated OCL structure. In addition, we
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Reports on the topic "Three-axle road train model"

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Valentine-Darby, Patricia, Kimberly Struthers, and Dale McPherson. Natural resource conditions at Cedar Creek & Belle Grove National Historical Park: Findings & management considerations for selected resources. National Park Service, 2024. http://dx.doi.org/10.36967/2303413.

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The National Park Service?s Natural Resource Condition Assessment (NRCA) Program developed an NRCA with managers at Cedar Creek & Belle Grove National Historical Park (CEBE), a partner park located in western Virginia in Frederick, Shenandoah, and Warren counties. An NRCA?s purpose is to synthesize information on the primary drivers and stressors affecting natural resource conditions, and to report conditions for specific natural resources selected by park managers. Condition assessments were conducted for three of CEBE?s resources?visual resources, night sky, and soundscape?and gap analys
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