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Relevant bibliographies by topics / Wheels and motors unit

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Academic literature on the topic 'Wheels and motors unit'

Author: Grafiati

Published: 4 June 2025

Last updated: 23 June 2025

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Journal articles on the topic "Wheels and motors unit"

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Podryhalo, M., R. Kaidalov, and V. Omelchenko. "Rational choice of torques distribution between the front and back electric motors of automobile wheels drive." IOP Conference Series: Materials Science and Engineering 1277, no. 1 (2023): 012023. http://dx.doi.org/10.1088/1757-899x/1277/1/012023.

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Abstract Two-axle all-wheel drive automobiles and the procedure for determining the torques between the front and back driving wheels are considered. The influence of the distribution of torques between the front and back driving wheels of all-wheel drive two-axle automobiles on their controllability, stability and energy efficiency is analyzed. A study was conducted to improve the energy efficiency of two-axle automobiles by rationally choosing the torque distribution coefficient between the front and back wheels. A mathematical model of the efficiency ratio of the wheel drive of a two-axle automobile was obtained, which makes it possible to determine the ratio of the rational distribution of torques between the front and back wheels through its optimization. It has been proven that the use of electric automobiles and automobiles with a combined power unit will allow to control the distribution of torques between their front and back wheels controlled by electric motors. The proposed rational choice of the distribution of torques between the front and rear electric motors of the wheel drive will allow to increase the efficiency of the wheel drive and improve the energy efficiency not only of single electric automobiles and hybrid automobiles, but also of road trains that use a combined electromechanical drive of the driving wheels.

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Cho, Jeongmin, and Kunsoo Huh. "Torque vectoring system design for hybrid electric–all wheel drive vehicle." Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 234, no. 10-11 (2020): 2680–92. http://dx.doi.org/10.1177/0954407020906626.

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A torque vectoring system is designed for the hybrid electric–all wheel drive vehicle where the front and rear wheels are powered by the combustion engine and electric motors, respectively. The vehicle provides enhanced handling performance by a twin motor drive unit that can distribute the driving and regenerative braking torques to the rear-left and rear-right wheels independently. Based on the driver’s intention, a sliding mode controller is designed to calculate the desired traction force and yaw moment for the vehicle. The force distribution between the front and rear axles is investigated considering the principle of the friction circle, and characteristics of the engine and drive motors. The vertical tire force is estimated using the random walk Kalman filter for the proportional distribution between the front and rear longitudinal forces. For the torque distribution between the rear-left and rear-right wheels, an optimization problem is formulated by considering the constraints of the friction circle and motor characteristics. The proposed algorithm is evaluated in a simulation environment first by reflecting the characteristics of the hybrid electric–all wheel drive modules. Then, the test vehicle is utilized to validate the handling performance experimentally and to compare with the uncontrolled cases.

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Sanchez, Sebastian, and Pranav A. Bhounsule. "Design, Modeling, and Control of a Differential Drive Rimless Wheel That Can Move Straight and Turn." Automation 2, no. 3 (2021): 98–115. http://dx.doi.org/10.3390/automation2030006.

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A rimless wheel or a wheel without a rim, is the simplest example of a legged robot and is an ideal testbed to understand the mechanics of locomotion. This paper presents the design, modeling, and control of a differential drive rimless wheel robot that achieves straight-line movement and turning. The robot design comprises a central axis with two 10-spoked springy rimless wheels on either side and a central body that houses the electronics, motors, transmission, computers, and batteries. To move straight, both motors are commanded to constant pitch control of the central body. To turn while maintaining constant pitch, a differential current is added and subtracted from currents on either motor. In separate tests, the robot achieved the maximum speed of 4.3 m per sec (9.66 miles per hour), the lowest total cost of transport (power per unit weight per unit velocity) of 0.13, and a smallest turning radius of 0.5 m. A kinematics-based model for steering and a dynamics-based sagittal (fore-aft) plane model for forward movement is presented. Finally, parameters studies that influence the speed, torque, power, and energetics of locomotion are performed. A rimless wheel that can move straight and turn can potentially be used to navigate in constrained spaces such as homes and offices.

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Pandey, Anish, Sujeet Singh, Price Kumar, Lalit Kumar Pothal, and Rajiva Lochan Mohanty. "Design and Analysis of All-Terrain Differential-Driven Caterpillar-Wheeled Based Unmanned Fire Extinguisher Robot." Journal of Applied Research and Technology 20, no. 5 (2022): 529–35. http://dx.doi.org/10.22201/icat.24486736e.2022.20.5.1389.

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The usage of wheeled robots in service robots such as planetary exploration robots, pick-and-place robots, cleaning robots, surveillance robots, etc., is continuously increasing day by day. The primary purpose of these service robots is to reduce human resources and minimize human life risk in a hazardous environment. Therefore, in this article, the authors purpose and design the all-terrain differential-driven caterpillar-wheeled based unmanned Fire Extinguisher Robot (FER), which can detect and monitor the fire by using gas (smoke) sensor and temperature sensor. Also, it can extinguish the fire by spreading the fire extinguisher gas. The proposed unmanned FER has been divided into the two assembled units, one unit drives the FER, and another unit is for spreading the fire extinguisher gas through the nozzle of the cylinder. The driving unit of unmanned FER consists of six DC geared motors, two dual DC motor drivers, caterpillar driving wheels, Arduino MEGA microcontroller, Bluetooth module, gas sensor, temperature sensor, and rechargeable lithium-polymer (LiPo) battery. Next, the one DC motor connected with a motor driver controls the fire extinguisher gas cylinder's open and close valve through a Bluetooth signal from an android phone. The specially designed chassis and caterpillar driving wheel arrangement help the FER to travel in any terrain, including stair climbing. Real-time experimental tests have been carried out on the designed unmanned FER during the fire extinguishing process to prove the effectiveness of the developed FER.

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BIZHAEV, ANTON V. "Energy and economic operating parameters of tractor equipped with electrically driven wheels." Agricultural Engineering, no. 1 (2024): 53–58. http://dx.doi.org/10.26897/2687-1149-2024-1-53-58.

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The modern agro-industrial sector requires a large proportion of tractors of a small-traction class due to the rising fuel costs and environmental requirements. The authors raise questions about the prospects of using electric motors as a means to drive the tractor power unit and energy equipment, as well as consider pre-conditions for the integration of such systems in the tractor design under the current economic state of energy resources in the Russian Federation. For this purpose, the article presents a methodology for evaluating the energy and economic parameters of a tractor with an electrically driven power unit as compared with a tractor with a diesel engine. The offered indicator - specific energy cost - makes it possible to compare the parameters of tractors with a diesel engine and an electrically driven power unit. Calculations have shown that the use of a brushless DC electric motor compared with a diesel engine at medium and low loads will reduce the specific energy cost by 5 to 7 roubles/kWh, or by 30 to 50%. The study has established that the electric power potential in the Russian Federation exceeds the possible energy costs of agricultural machinery by 300 billion kWh, which makes it possible to switch to electrically driven power units. However, it is impossible to use electric motors in tractors without further development of power complexes and electric charge storage batteries.

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Hichem, Chergui, Nasri Abdelfatah, and Korhan Kayisli. "A Novel Method of Electric Scooter Torque Estimation Using the Space Vector Modulation Control." International Journal of Renewable Energy Development 10, no. 2 (2021): 355–64. http://dx.doi.org/10.14710/ijred.2021.33403.

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In recent years, there are many studies have been conducted in the field of light electric vehicles, especially electric scooters. These are preferred in large urban areas that are crowded with cars and cause traffic congestion in the European and Asian continents. In this study, the three-wheel electric scooter contained two BLDC motors that drove the rear wheels and, each of these motors were controlled independently via an electronic differential. This paper aims to implement a Space Vector Modulation for the Direct Torque Control unit (SVM-DTC) of the BLDC wheel-motor of each driving wheel. The proposed system had been designed and simulated by using the MATLAB/SIMULINK environment. The performance of the overall system (scooter stability control system - energy storage system -power quality, etc.) with using SVM-DTC control was compared with the classical Direct Torque Control (DTC) algorithm by using the same electric scooter model. The obtained results showed clearly the improvement made by the proposed control loop system at different stages, where it could reduce the THD of the stator current from 30.99% to 6.16%,as well as it was able to achieve more than 0.2% of the charging state of the battery in 18 seconds only.

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V. M., Tretyak, Govorov O. F., Matskevich Yu. M., and Oliadnichuk R. V. "Problems of power division between the devices of agricultural machine-tractor units." Mehanization and electrification of agricultural, no. 15(114) (2022): 115–23. http://dx.doi.org/10.37204/0131-2189-2022-15-14.

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Purpose. Determination of the rational use of various types of transmissions in the creation of multi-moving agricultural machine-tractor units. Methods. Analysis of technical characteristics of sources of mechanical energy, synthesis of power distribution system using motor-wheels. Results. Based on the analysis of literary sources, proposals were received for the choice of transmissions for multi-moving agricultural machine-tractor units. A kinematic synthesis of an electromechanical transmission for individual propellers for various purposes is proposed. Conclusions 1. The maximum transport speed of modern agricultural tractors is in the range of 40 ÷ 50 km/h, and the minimum technological speed at the maximum power of the traction vehicle (TV) can be within 4 ÷ 5 km/h when working with a soil loosener. 2. Modern agricultural TV should have a ratio of maximum speed to minimum speed up to 10. 3. The nominal range of rotation frequencies of traction electric motors available on the market is not able to overlap the ratio more than 2 ÷ 2.5. 4. The kinematic combination of the rotation frequencies of two electric motors allows you to cover the range of operating speeds of the MTA without mechanical switching of the transmission elements. 5. The proposed autonomous motor-transmission unit allows to compose MTA with the distribution of electrical power between additional engines of technological modules of MTA. Keywords: machine-tractor unit, transmission, traction concept, mover, electric wheel motor.

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Mamuni Arya, Priyadarshinee Das, Sushanta Kumar Pradhan, Swarupa Arjya, and Amit Jain Biswa. "Design and Fabrication of AI Based Vehicle to Prevent Road Accident." International Research Journal on Advanced Engineering Hub (IRJAEH) 2, no. 04 (2024): 920–25. http://dx.doi.org/10.47392/irjaeh.2024.0128.

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This study aims to introduce the concept of artificial intelligence in the automotive industry. In recent years, artificial intelligence has grown significantly, and ever since, advancements have been made in every aspect of the contemporary world. This article discusses the necessity for a strong artificial intelligence in the automotive industry and the recent expansion that has occurred up to this point. With a user order, this vehicle may navigate automatically. A vehicle controller will be used to regulate the vehicle's mobility. This vehicle is made up of a mechanical module (base) that holds the power unit, microcontroller unit, wheels, sensors, and DC motors. The circuit is powered by the power unit. DC motors increase motion capability. For smoother and quicker navigation, the microcontroller unit receives input from ultrasonic sensors, interprets it, and uses a motor controller to regulate the movement of motors. With the use of this technology, autonomous vehicles also referred to as "smart cars" that can navigate and resolve on-road situations safely and intelligently can be researched and produced. In the near future, cars based on this idea will improve road safety, reduce minor accidents, makes life easier and more convenient. In order to redefine this technology and make it even more superior and inexpensive, more study and funding are needed in this area.

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Li, Pengs, Ming Tang, Congyi Lyu, Mengjun Fang, Xingguang Duan, and Yunhui Liu. "Design and analysis of a novel active screw-drive pipe robot." Advances in Mechanical Engineering 10, no. 10 (2018): 168781401880138. http://dx.doi.org/10.1177/1687814018801384.

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This study proposes a novel active screw-drive in-pipe robot that can adapt the circular-type and square-type pipe structure. The pipe robot is composed of four driving units and a wall-pressing suspension mechanism. Each driving unit contains a motor, a transmission train, and an electromagnetic brake, which is for switching the motion transmission route. DC motors drive the helical wheels, and the incline angle of the helical wheels can be adjusted by using the electromagnetic brake. The wheels of the driving unit exhibit rolling and steering motion. Thus, the robot is capable of translation movements, rotation movements, and screw motions with respect to the axis of the pipe according to the different positions of the helical wheels. The robot can avoid obstacles by using the rotation and screw modes. Moreover, the wall-pressing mechanism is analyzed and modified, and a criteria for entering a reduction pipe reducer are derived for the double scissor-like suspension mechanism. We also analyze the robot motion in curved pipes in two typical postures. The simulation experiments reveal the relationship between the translation and rotation motion of the robot and indicates that the steering angle of the wheels can be regarded as a regulator to adjust the movement speed of the robot aside from tuning the posture of the robot. Elbow experiments are conducted to verify the effectiveness of the motion strategy. The robot can be adapted for both circular and square tube pipes without any change in its structure due to the special configuration.

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Mudda, Mallikarjun, Sandeep Hemdribhotla, T. Krishna Chaitanya, and T. Rahul. "Weed Plucking Robot with Wireless Technologies." International Journal for Research in Applied Science and Engineering Technology 10, no. 2 (2022): 1443–50. http://dx.doi.org/10.22214/ijraset.2022.40499.

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Abstract: The main function of this robot is to remove the unwanted tiny plants or grass from the main crop, this system is very useful for farmer which avoids lot of manual work. Plucking weeds manually is very painful activity and also consumes lot of time and therefore this mechanism is designed. Since it is a prototype module, basic version of grass or tiny weeds plucking mechanism is designed with spur gears. The moving mechanism is constructed with motorized wheels, for this purpose 30RPM motors are used. The mechanism is designed to move in all directions including reverse direction. The plucking mechanism designed with spur gears is attached with another motor shaft. Two spur gears are used and are meshed with each other, when the vehicle is moving and when the gears are rolling, the grass or tiny weeds will be removed by the gear mechanism. The demo module is constructed with small spur gears, with this the basic concept can be proved and it is not a full fledged mechanism. With the help of a remote control unit constructed with 12E, 12D chips & RF transmitter, entire machine can be controlled. H Bridge IC is used to drive the wheel drive motors through remote and weed picking mechanism must be activated manually through third DC motor. Moving mechanism is controlled through 2 DC motors and is controlled independently by which mechanism will be moved in all directions. 12V, 1Ah Rechargeable battery is used to run the entire system and this battery can be charged through ac adapter. The remote is constructed using four keys to move the robot forward, reverse, right and left directions. By pressing any control key in the remote unit, the encoder chip generates proportionate digital code, which is fed to the RF transmitter for transmitting the data. In the receiver, the received data will be decoded by the 12D IC and based on this code this chip enables the H Bridge IC by which the corresponding motor rotates in one direction. Likewise both DC motors will be controlled independently according to the command code received by the communication system.

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Dissertations / Theses on the topic "Wheels and motors unit"

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Richardson, Kevin M. "An integrated switched reluctance marine propulsion unit." Thesis, University of Warwick, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.265625.

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Toman, Jiří. "Programování dvouosého pohonu s EC motory typu Maxon." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2008. http://www.nusl.cz/ntk/nusl-228121.

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This work describes direction of the two-axle drive with EC motors type MAXON by means of control unit EPOS. Except own direction of EC motors it contains various types progress for proposal parameters of the continuous and discrete regulator with consequence verification and character comparison by means of programming surroundings MATLAB. After the successful simulation verification is introduced most suitable regulator for positional direction of the two-axle drive into the real control units EPOS which they are connected to EC motors MAXON with making sign EC- max 22. Further is realized communication setting among control unit type EPOS P and her subjection unit EPOS. Unit EPOS P is further connected with steering computer by means of serial bus RS 232. Other part these work is program for direction of the two-axle drive copying the inscription MAXON with use linear and circular interpolation. To creation of the program source code is used standard programming language ST. This program is realized in programming surroundings EPOS STUDIO which is added by the producer to control units EPOS.

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Paulus, Luboš. "Multifunkční volant Formule Student." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2011. http://www.nusl.cz/ntk/nusl-219314.

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The Master‘s thesis deals with a creating of display writers on multiple-function steering wheel Formule Student. It is mainly about dates transfered through RS232 or CAN bus from control unit of the Formule to microcontroller. First of all it is necessary to find out, which informations and a which way of displaying them are more useful and readable for drivers. This leads to another point - right choice of display writers, which will be used on the steering wheel. Creation of the design and construction of display device follows.

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Chen, Kuan-Jung, and 陳冠榮. "Characteristic Measurement and Force Control of Vehicle Traction Wheels Driven by DC Motors." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/80963139035615320933.

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碩士<br>國立彰化師範大學<br>車輛科技研究所<br>99<br>The traction force control of electric wheel is related to the parameters of DC motor, this research connects DC motor to loading motor using shaft-to-shaft in-line placement and we precisely measure the changing behavior of DC motor under the various command of loading motor. As for building the Database of DC motor, we record the relationship between current, RPM and traction force under above circumstances. We use loading motor to output the different traction force simulation under the pattern of various road surfaces, these can provide information for the control of DC motor’s traction force. Our research focus on the relationship between the characteristic of DC motor and traction force, discussing DC motor’s characteristic and mechanics control ability under the condition of different road surfaces. We summarize and analyze DC motor correlated theories, for instance, we build relative relation between DC motor’s electrical signal and traction force, and build Database through actual measurement. Finally, we implement Control law and Control logic in driven single wheel of DC motor through the platform of actual testing, verifying correlated theories and control strategy for the enhancement of vehicle’s safety, stability and controllability.

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Lin, Yu-Bang, and 林郁邦. "Application of Gain-Scheduled Control Method for Traction Force Control of Vehicle Wheels Driven by DC Motors." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/88037833282015570604.

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碩士<br>國立彰化師範大學<br>車輛科技研究所<br>99<br>This paper proposes an approach to evaluate and control the traction force of the vehicle wheels driven by DC motors directly without monitoring the slip ratio of the wheel. Utilizing the built character database of the DC motor, or so-called force-RPM-current database, a gain-scheduled approach is developed to provide the appropriate traction force while one traction wheel of the vehicle is traveling into different road surface. An illustrated simulation with a scenario close to real situation is also given to show the feasibility to evaluate and control the traction force through the database of the DC motor.

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Afrathim, Afthab, and 安浩宇. "Improving the Stability of the Tractor Semi-Trailer by Steering the Rear Wheels of the Tractor Unit Using an Optimal Controller." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/89v7e9.

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碩士<br>國立臺灣科技大學<br>機械工程系<br>106<br>This thesis investigates a strategy that seeks to improve the stability of the tractor semi-trailer by controlling the rear wheels of the tractor unit to track a desired articulation angle. A linear quadratic regulator controller with tracking capability was designed in Simulink to track the desired articulation angle using tractor rear wheel steering. The performance of the controller was tested by interfacing Simulink with TruckSim, thereby allowing the use of TruckSim’s accurate vehicle model. From the simulations, it was found that by tracking the desired articulation angle, the roll and yaw stability of the tractor semi-trailer improved except in cases where sharp inputs are given in low road-tire friction coefficient conditions, e.g. J-turn. It was also found that it is crucial for the driver/system to consider the rear wheel kinematics of the tractor unit when deciding on the steering input of the front wheels. To verify the simulation results, scaled vehicle testing, using the principle of dynamic similarity was attempted; however, due to the speed limitations of the designed scaled articulated vehicle, the pi-groups could not be matched successfully, therefore, the simulation results could not be verified using scaled vehicle testing.

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Books on the topic "Wheels and motors unit"

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Damian, Cooper, Ward F. C. 1949-, Ontario Assessment Instrument Pool, and Ontario Ministry of Education, eds. Wheels: Grade 10 curriculum resource unit. Ontario Ministry of Education, 1990.

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Dunne, Michael J. American wheels, Chinese roads: The story of General Motors in China. John Wiley & Sons (Asia), 2011.

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United States. National Transportation Safety Board. Derailment of Union Pacific Railroad unit freight train 6205 west near Kelso, California, January 12, 1997. National Transportation Safety Board, 1998.

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E, McGuire Barbara, ed. Books on wheels: Cooperative learning through thematic units. Libraries Unlimited, 1998.

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Cardenas, Ernesto A., Delgado, Nancy M., Saavedra, Patricia I. Wheels & Motors. Milo Educational Books & Resources, 2009.

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Close, Edward. Wheels, Wings, and Motors. Rosen Publishing Group, 2014.

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Wheels, wings, and motors. PowerKids Press, 2014.

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Wheels, Wings, and Motors. Rosen Publishing Group, 2013.

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Staff, Australian Geographic. Wheels, Wings and Motors. Bauer Media Books, 2011.

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Water-Wheels, or Hydraulic Motors. Creative Media Partners, LLC, 2022.

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Book chapters on the topic "Wheels and motors unit"

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Jacquot de Rouville, Henri-Pierre, Romain Garbage, Agnès M. Sirven, Claire Kammerer, and Gwénaël Rapenne. "Triptycene or Subphthalocyanine Wheels and Polyaromatic Hydrocarbon Nanovehicles." In Single Molecular Machines and Motors. Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-13872-5_4.

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Yao, Fulai, and Yaming Yao. "Calculation and Selection of Motor Parameters in Automation System." In Efficient Energy-Saving Control and Optimization for Multi-Unit Systems. Springer Nature Singapore, 2024. http://dx.doi.org/10.1007/978-981-97-4492-3_11.

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AbstractMotors are the most important executive components in electrical automation equipment, including AC motors, DC motors, AC servo motors, DC servo motors, stepping motors, etc. In the design of the automation system, the selection of the motor is a frequently encountered problem. You need to calculate the parameters of the required motor. Novices often do not know where to start. Below we give a simple calculation and selection method.

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Yao, Fulai, and Yaming Yao. "Most Commonly Used Actuator–Motor." In Efficient Energy-Saving Control and Optimization for Multi-Unit Systems. Springer Nature Singapore, 2024. http://dx.doi.org/10.1007/978-981-97-4492-3_6.

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AbstractIn energy-saving control, a large number of electric motors are used for load distribution and devices switching. A lot of rotary motions, linear motion or other forms of mechanical motion are mostly driven by motors. It can be said that motors are the most commonly used actuators in the field of electrical engineering and automation. After being connected to a suitable power supply, the motor generates rotary motion, and the linear motor produce linear motion.

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Yao, Fulai, and Yaming Yao. "Simple Usage Method of Frequency Converter and Expanding Knowledge." In Efficient Energy-Saving Control and Optimization for Multi-Unit Systems. Springer Nature Singapore, 2024. http://dx.doi.org/10.1007/978-981-97-4492-3_8.

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AbstractSince AC motors do not have brushes, the vulnerable parts of DC motors, and are easy to maintain, coupled with the rapid decline in the price of frequency converters, AC speed regulation has developed rapidly.

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Yao, Fulai, and Yaming Yao. "Optimal Control of Electric Transportation Vehicles Such as High-Speed Rail." In Efficient Energy-Saving Control and Optimization for Multi-Unit Systems. Springer Nature Singapore, 2024. http://dx.doi.org/10.1007/978-981-97-4492-3_20.

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AbstractMany electric transportation vehicles such as locomotives, subways, electric cars, ships, etc. are jointly driven by multiple electric motors. In these occasions and fields, there are optimization problems of how multiple motors or multiple engines output power and how to determine the number of operating units.

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Yao, Fulai, and Yaming Yao. "Efficiency Optimization of Scraper Conveyors and Paper Machines." In Efficient Energy-Saving Control and Optimization for Multi-Unit Systems. Springer Nature Singapore, 2024. http://dx.doi.org/10.1007/978-981-97-4492-3_19.

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AbstractMultiple motors are used to drive long scraper conveyors or the wire section of paper machines, mainly to make long chains and long belts evenly stressed. This type of system does not have the problem of optimal switching of the number of drive motors. However, the system has the problem of how to distribute the load so that the system operates efficiently.

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Vantsevich, Vladimir, Jesse Paldan, David Gorsich, and Lee Moradi. "Inverse Approach to Vehicle Generalized Parameters for Individual Drives." In Lecture Notes in Mechanical Engineering. Springer Nature Switzerland, 2024. http://dx.doi.org/10.1007/978-3-031-70392-8_36.

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AbstractIn this paper, a method is presented to determine the individual tire slippages and wheel circumferential forces/torques for vehicles with individually-driven wheels. The method is based on a system of parameters of individual wheels mathematically linked to the vehicle generalized parameters. The paper demonstrates an inverse approach on how the generalized parameters can be used to determine individual wheel parameters when the vehicle generalized parameters are given for a single, generalized wheel, whose kinematics and dynamics are equivalent to those of the vehicle. The method can be applied to improve terrain mobility and energy efficiency of autonomous ground vehicles, including planet rovers whose guidance systems do not take into consideration that the tire slippages and circumferential forces are different or should be different by determining individual parameters of the e-motors to provide maximum mobility or energy efficiency in a straight line motion.

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Yao, Fulai, and Yaming Yao. "Parameter Design in High-Speed High-Precision Motion Control." In Efficient Energy-Saving Control and Optimization for Multi-Unit Systems. Springer Nature Singapore, 2024. http://dx.doi.org/10.1007/978-981-97-4492-3_12.

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AbstractThe first major task of automation is to replace labor to achieve faster and more precise production. In systems such as CNC machine tools, machining centers, CNC engraving, printing, die-cutting, papermaking, steel rolling, and high-speed rail, it is necessary to control the speed of multiple motors.

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Yao, Fulai, and Yaming Yao. "Speed Regulation Method in Energy Saving System." In Efficient Energy-Saving Control and Optimization for Multi-Unit Systems. Springer Nature Singapore, 2024. http://dx.doi.org/10.1007/978-981-97-4492-3_7.

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AbstractIn the energy-saving control system, in many occasions, it is necessary to use the method of speed regulation to distribute the load of the equipment and to start and stop the equipment. These speed regulation methods are both mechanical and electrical. Due to the rapid development of high-voltage and high-current electronic devices, the application of frequency converter speed regulation of AC motors is becoming more and more common.

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Divakaran, A. M., E. Abo-Serie, E. I. Gkanas, J. Jewkes, and S. Shepherd. "CFD Based Aerodynamics Conjugate Heat Transfer and Airgap Fluid Flow Thermal Analysis to a Wheel Hub Motor for Electric Scooters." In Springer Proceedings in Energy. Springer Nature Switzerland, 2023. http://dx.doi.org/10.1007/978-3-031-30960-1_3.

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AbstractThe geometry of commercially available wheel hub motors inherently restricts packaging space and may prevent the introduction of more sophisticated, efficient, and expensive cooling systems. Due to the limited available space in the wheels, commercial hub motors often rely on aerodynamic passive cooling. The small air-gap (0.5–1 mm) between the coils and the magnets results in heat transfer to the magnets and consequently increases their temperature. As a result, the perfeormance of the permanent magnets (PMs) will be limited and also will heavily affect their lifetime; thus, advanced cooling strategies must be introduced. In the current study, a three-dimensional (3D) thermal model was developed for a commercially available 500 W scooter hub motor under a constant heat load of 180 W using Computational Fluid Dynamics (CFD) (= 64%).The spatial distribution of the temperature for the motor parts are evaluated considering both the internal and external fluid flow dynamics. Further, analysis of airflow in the the gap is performed and the results from the CFD is compared with the published correlations. The flow in such small motor was found to be laminar with Taylor number below 40. Results also showed that enhancement of the cooling is necessary to avoid damage of the winding vernish and to reduce the magnets temperature particularly when the motor works at high torque with low efficiency.

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Conference papers on the topic "Wheels and motors unit"

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Shintre, Tejas Vibhakar, Abhishek Gupta, and Leena Vachhani. "Tri-Sphero Bot: A Modular Compliant Unit with Spherical Wheels." In 2024 6th International Conference on Reconfigurable Mechanisms and Robots (ReMAR). IEEE, 2024. http://dx.doi.org/10.1109/remar61031.2024.10617698.

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Srivastava, Yashdeep, Swastik Pani, Shreyas Thombare, Somnath Sengupta, and Dipankar Debnath. "Intelligent Integrated Vehicle Control and Motor Control Unit for Electric Three wheelers." In 2024 6th International Conference on Energy, Power and Environment (ICEPE). IEEE, 2024. http://dx.doi.org/10.1109/icepe63236.2024.10668852.

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Petropol-Serb, Gabriela Dana, Ion Petropol-Serb, and Gabriel-Ionut Petropol-Serb. "Predictive Digital Twin Concept To Analyze The Influence Of Adhesion Force In The First Moment Of Movement Of A Motors Unit Equipped With Asynchronous Motors." In 2024 International Symposium on Power Electronics, Electrical Drives, Automation and Motion (SPEEDAM). IEEE, 2024. http://dx.doi.org/10.1109/speedam61530.2024.10609105.

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Raghibizadeh, S., A. Kapps, A. A. Goldenberg, E. Tsang, J. A. Rowe, and M. E. Timm. "Modeling and Comparative Investigation of a TriTec Power Unit." In ASME 1997 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 1997. http://dx.doi.org/10.1115/imece1997-1286.

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Abstract This paper presents the results of comparative analyses between the TriTec Power Unit and a typical crank type air motor based on their mathematical models. The comparative analyses showed that the efficiency of the TriTec Power Unit is superior to that of a comparable conventional crank type motor. A representative value for the improvement in efficiency is 50%. A number of case studies have been considered in our investigation in order to assess performance of the motors under various combinations of working conditions that may occur in practice. In all of the cases studied, the efficiency of the TriTec Power Unit has been superior to that of the crank type motor.

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Li, Wei, and Kezhong He. "Sensor-Based Robot Navigation in Uncertain Environments Using Fuzzy Logic." In ASME 1994 International Computers in Engineering Conference and Exhibition and the ASME 1994 8th Annual Database Symposium collocated with the ASME 1994 Design Technical Conferences. American Society of Mechanical Engineers, 1994. http://dx.doi.org/10.1115/cie1994-0476.

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Abstract This paper presents a new method for sensor-based mobile robot navigation in unknown environments using fuzzy logic. The inputs to the fuzzy control scheme consist of a heading angle between the robot and a specified target and distances between the robot and obstacles to the left, front, and right locations. The outputs from the control scheme are commands for the speed control unit of two rear wheels of a mobile robot. Distances between the robot and obstacles are acquired by an array of ultrasonic sensors. Current coordinates of the robot are measured by a wheel ancoder system. The velocities of the driving wheels are controlled by a motor drive unit. The main idea of the proposed method is quantitatively to formulate reactive behaviors and efficiently to coordinate their conflicts and competitions by fuzzy sets and fuzzy rules. Simulation results show that the proposed method can be efficiently applied to robot navigation in complex and uncertain environments based on sensors.

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Dheivasigamani, Saravanabhavan, Chris Varghese Vattamala, Thulasirajan Ganesan, and Praveen Chakrapani Rao. "Approach to Develop Reliable Two-Wheeler EV Powertrains." In International Conference on Advances in Design, Materials, Manufacturing and Surface Engineering for Mobility. SAE International, 2023. http://dx.doi.org/10.4271/2023-28-0101.

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<div class="section abstract"><div class="htmlview paragraph">In the past decade, the transportation industry has witnessed a rapid transition from conventional fossil fuels to electric power. This shift has spurred diverse electrification initiatives spanning various vehicle categories, including E-cycles, 2-wheelers, 3-wheelers, cars, and commercial vehicles. Central to these road transport vehicles are essential components such as battery systems, electric motors, and field-oriented controllers. These controllers’ interface with the vehicle control unit, optimizing motor performance across diverse operational conditions. The reliability of the core motor and controller system is of paramount importance, ensuring seamless operation throughout its life. Notably, certain applications, like 2-wheeler, demand customized designs with compact configurations to save space and eliminate excessive wiring. This necessitates heightened reliability due to limited serviceability within these confined designs. This paper outlines a comprehensive strategy for achieving holistic reliability within the context of 2-wheel electric vehicle (EV) motors and controllers. It addresses the challenges encountered in enhancing reliability and proposes a systematic approach for assessment and improvement. The proposed methodology involves the utilization of established tools such as Failure Modes, Effects, and Criticality Analysis (FMECA), Fault Tree Analysis (FTA), and Reliability Block Diagrams (RBD). Furthermore, this approach incorporates advanced techniques like Finite Element Analysis (FEA) and Computational Fluid Dynamics (CFD) simulations, along with adherence to industry-wide standards. By adopting this structured methodology, manufacturers and researchers can effectively evaluate and enhance the reliability of 2-wheel EV powertrains. The integration of diverse analytical tools, simulation methods, and industry best practices collectively contributes to the attainment of a robust and dependable electric vehicle powertrain system.</div></div>

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Fares, George Maher Alfi, Adam Gleeson, and Lucas Rajotte. "Automotive Intermediate Shaft Design & Bearing Selection for Switched Reluctance Motors." In WCX SAE World Congress Experience. SAE International, 2024. http://dx.doi.org/10.4271/2024-01-2886.

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<div class="section abstract"><div class="htmlview paragraph">Optimized half-shaft design is paramount to deliver power from a drive unit and gearbox to the wheels of a vehicle. An intermediate shaft must be able to deliver rotational force to the wheel with acceptable efficiency to prevent any sort of torque losses or torque steer when coupled with another shaft. Intermediate shafts must be optimized for torque delivery, stiffness, weight, and efficiency relative to the CV shaft it is coupled to. For the unique switched reluctance motor that is utilized in this study, the shaft will be supported by a fixed housing in which a bearing will be affixed. It is critical that through these studies an attempt is made to optimize all these conditions by selecting the best materials as well as study the effects of having a tubular shaft as opposed to one that is solid using computer software. This analysis was completed with specific constraints in mind with respect to both shaft performance as well as packaging constraints. Processes include design for manufacturing, simulations of both shaft integrity and simulating motor behavior under high stress drive-cycle scenarios. As for bearing selection, a motor such as this has never been integrated in an automobile powertrain before, as such, the loads it will undergo must be studied to determine which bearing will work best in terms of load capabilities, life, and durability, as well as protection when exposed to outdoor elements at speed. The best solution for this application is using a tubular shaft made from 4130 steel supported by a spherical roller bearing.</div></div>

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Murata, Satoshi. "Vehicle Dynamics Innovation with In-Wheel Motor." In 1st International Electric Vehicle Technology Conference. Society of Automotive Engineers of Japan, 2011. http://dx.doi.org/10.4271/2011-39-7204.

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<div class="section abstract"><div class="htmlview paragraph">In-wheel motors (IWM) will be a key technology that contributes to the popularization of electric vehicles. Combining electric drive with IWM enables both good vehicle dynamics and a roomy interior. In addition, the responsiveness of IWM is also capable of raising dynamic control performance to an even higher level. IWM enable vertical body motion control as well as direct yaw control, electric skid control, and traction control. This means that IWM can replace most control actuators used in a vehicle chassis. The most important technology for IWM is to enable the motor to coexist with the brake and the suspension arms inside the wheel. The IWM drive unit described in this paper can be installed with a front double wishbone suspension, the most difficult configuration.</div></div>

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Tarao, Susumu, Yasunori Fujiwara, Naoaki Tsuda, and Soichiro Takata. "Development of Autonomous Mobile Robot Platform Equipped with a Drive Unit Consisting of Low-End In-Wheel Motors." In 2020 5th International Conference on Control and Robotics Engineering (ICCRE). IEEE, 2020. http://dx.doi.org/10.1109/iccre49379.2020.9096433.

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Padovani, Damiano, and Monika Ivantysynova. "A Hybrid Hydraulic Propulsion System for Railway Machinery." In 2016 Joint Rail Conference. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/jrc2016-5824.

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The vast majority of railway construction and maintenance machines is powered by compression-ignition combustion engines. The tendency of introducing stringent standard emission regulations for these prime movers, e.g. TIER 4, forces the migration toward downsized units. Additionally, the high price reached by diesel fuel in the last decades demands reductions of the machines’ energy consumption in order to maintain the customers’ operating costs competitive. Both targets can be achieved by implementing efficient hybrid hydraulic displacement-controlled architectures that reduce pollutants emissions and benefit fuel saving without affecting the system’s productivity. For these reasons, this research paper aims at investigating the potentials of a series-parallel hybrid architecture grounded on secondary controlled hydraulic motors and potentially suitable for any railway construction and maintenance machinery. The results demonstrate that the rated engine power can be reduced by at least 35% in the reference application by applying such a propulsion system. Specifically, the high-fidelity multi-domain dynamic model created for sizing, analyzing, and controlling this displacement-controlled layout is addressed. Special focus is dedicated to the rail/wheel interface confirming that the proposed control strategy maintain the slip/spin of the wheels within the desired limits.

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Reports on the topic "Wheels and motors unit"

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Development of an Adaptive Efficient Thermal/Electric Skipping Control Strategy Applied to a Parallel Plug-in Hybrid Electric Vehicle. SAE International, 2022. http://dx.doi.org/10.4271/2022-01-0737.

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In recent years automobile manufacturers focused on an increasing degree of electrification of the powertrains with the aim to reduce pollutants and CO2 emissions. Despite more complex design processes and control strategies, these powertrains offer improved fuel exploitation compared to conventional vehicles thanks to intelligent energy management. A simulation study is here presented aiming at developing a new control strategy for a P3 parallel plug-in hybrid electric vehicle. The simulation model is implemented using vehicle modeling and simulation toolboxes in MATLAB/Simulink. The proposed control strategy is based on an alternative utilization of the electric motor and thermal engine to satisfy the vehicle power demand at the wheels (Efficient Thermal/Electric Skipping Strategy - ETESS). The choice between the two units is realized through a comparison between two equivalent fuel rates, one related to the thermal engine and the other related to the electric consumption. An adaptive function is introduced to develop a charge-blended control strategy. The novel adaptive control strategy (A-ETESS) is applied to estimate fuel consumption along different driving cycles. The control algorithm is implemented on a dedicated microcontroller unit performing a Processor-In-the-Loop (PIL) simulation. To demonstrate the reliability and effectiveness of the A-ETESS, the same adaptive function is built on the Equivalent Consumption Minimization Strategy (ECMS). The PIL results showed that the proposed strategy ensures a fuel economy similar to ECMS (worse of about 2% on average) and a computational effort reduced by 99% on average. This last feature reveals the potential for real-time on-vehicle applications.

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