Готові списки джерел за темами / Maximum transmissible torque

Добірка наукової літератури з теми "Maximum transmissible torque"

Автор: Grafiati

Опубліковано: 19 червня 2021

Оновлено: 10 лютого 2022

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Статті в журналах з теми "Maximum transmissible torque":

Yin, Dejun, and Yoichi Hori. "Traction Control for EV Based on Maximum Transmissible Torque Estimation." International Journal of Intelligent Transportation Systems Research 8, no. 1 (January 2010): 1–9. http://dx.doi.org/10.1007/s13177-009-0005-x.

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Dejun Yin, Sehoon Oh, and Y. Hori. "A Novel Traction Control for EV Based on Maximum Transmissible Torque Estimation." IEEE Transactions on Industrial Electronics 56, no. 6 (June 2009): 2086–94. http://dx.doi.org/10.1109/tie.2009.2016507.

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Bucchi, Francesco, Paola Forte, and Francesco Frendo. "Geometry optimization of a magnetorheological clutch operated by coils." Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications 231, no. 1-2 (September 25, 2016): 100–112. http://dx.doi.org/10.1177/1464420716665650.

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Magnetorheological fluids are smart materials responsive to magnetic field, widely applied in dampers and shock absorbers but also in clutches and brakes. The magnetorheological fluid gap shape is a very important topic in the design of clutches, since it directly influences the transmissible torque and the power loss. In this paper, an approach to magnetorheological fluid clutch design based on optimization is proposed and tested on four different layouts. Starting from a given available volume, two magnetorheological fluid gap shapes, namely single cylinder and multi-disc, and two coils positions, i.e. internal or external, were considered. A lumped parameter model was developed to analytically compute the magnetic flux along the clutch magnetic circuit and to calculate the transmissible torque of the clutch. The optimal geometry of the clutch for maximum transmissible torque, in terms of number and dimensions of the coil sectors, was determined for each shape and coil configuration and the results were validated by finite element models.

Zhou, Li, Lu Xiong, and Zhuo Ping Yu. "A Research on Anti-Slip Regulation for 4WD Electric Vehicle with In-Wheel Motors." Applied Mechanics and Materials 347-350 (August 2013): 753–57. http://dx.doi.org/10.4028/www.scientific.net/amm.347-350.753.

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This paper proposes a wheel slip control strategy for 4WD Electrical Vehicle with In-wheel Motors. In the first part of this paper, a brief introduction of sliding mode control for acceleration slip regulation is given. Consider that its control effect varies with road conditions, another algorithm which can automatically adapt to different roads is designed. This method takes advantage of the peculiarity of the longitudinal static tire force curve and regulates wheel slip ratio to the detected optimal value, aiming to maximize the traction force while preserving sufficient lateral tire force. Simulation results show that the slip rate can be regulated to a value around the optimal slip ratio, and the driving torque is very close to the maximum transmissible torque. The control strategy achieves stronger stability, shorter driving distance and hence better control performance.

Yang, Woo Joo, and Young Bae Kim. "Traction Control for a Fuel Cell Hybrid Vehicle (FCHV)." Applied Mechanics and Materials 187 (June 2012): 286–92. http://dx.doi.org/10.4028/www.scientific.net/amm.187.286.

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Traction control for the proton exchange membrane (PEM) fuel cell hybrid vehicle is studied. The traction control denotes the anti-slipping action when the vehicle meets sudden road surface friction changes. Slip ratio is utilized to analyze the slipping action, and optimum value is chosen for controlling the motor speed to prevent the slip. A one-dimensional longitudinal model of a fuel cell vehicle is constructed to prove the traction control effectiveness. The model includes a fuel cell system, a battery, an inverter and permanent synchronous motor, a bi-directional converter and a vehicle dynamics. Two three-phase permanent magnet synchronous motors (PMSM) are utilized to generate the required power for the vehicle traction. Maximum transmissible torque estimation (MTTE) control and sliding mode control are utilized for the PEM fuel cell vehicle traction control algorithms. The simulation results show that the proposed control algorithm effectively prevents vehicle slipping when a PEM fuel cell vehicle meets a sudden road friction change by distributing appropriate powers between battery and fuel cell.

Li, Jianqiu, Ziyou Song, Zhibin Shuai, Liangfei Xu, and Minggao Ouyang. "Wheel Slip Control Using Sliding-Mode Technique and Maximum Transmissible Torque Estimation." Journal of Dynamic Systems, Measurement, and Control 137, no. 11 (August 14, 2015). http://dx.doi.org/10.1115/1.4031056.

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This paper presents the analysis and design of a novel traction control system (TCS) based on sliding-mode control (SMC) and maximum transmissible torque estimation (MTTE) technique, which is employed in four-wheel independent drive electric vehicles (EVs) without detecting the vehicle velocity and acceleration. The original MTTE technique is effective with regard to the antislip control; however, it cannot sufficiently utilize the adhesive force from the tire–road surface. In the proposed TCS algorithm, only front wheels are equipped with the MTTE technique, while rear wheels are equipped with the SMC technique. As a result, the front wheel is critically controlled by the MTTE technique. Thus, its rotary speed can be used to approximately estimate the chassis velocity and acceleration, which are key input parameters of the SMC. The rear wheel slip ratio can be therefore controlled by the SMC which is robust against uncertainties and disturbances of parameters for exploiting more transmissible friction force. In addition, the stability of MTTE is analyzed in this paper because an important parameter is neglected in the original MTTE technique. As a result, the stability condition is changed, and the MTTE is modified in the proposed TCS according to the new conclusion. A half four-wheel drive (4WD) EV model is initially built using matlab/simulink. This paper investigates the proposed TCS for various adhesive conditions involving abrupt change in road friction. Compared with the original MTTE technique, the comprehensive performance, particularly the acceleration ability, is significantly improved by the proposed controller. The simulation result validates the effectiveness and robustness of the proposed TCS.

Дисертації з теми "Maximum transmissible torque":

Karlsson, Mattias, and Sebastian Johansson. "Evaluation of Traction Control Systems for an Electric Forklift Truck." Thesis, Linköpings universitet, Fordonssystem, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-176552.

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This thesis evaluates different controllers for traction control on an electric forklift truck and has been done in cooperation with Toyota Material Handling Manufacturing Sweden. The need for a traction control system has increased with the introduction of lithium-ion batteries replacing the older lead-acid batteries, reducing the battery weight and therefore the downward force on the driving wheel increasing the risk for slip. The forklift truck was modelled using Simulink and validated by experiment. Different possible control strategies were investigated and three were chosen for implementation in simulation. These were controllers based on Model Following Control, Maximum Transmissible Torque Estimation and Sliding Mode Control. Model Following Control makes use of a nominal model to compare actual wheel speed values with nominal wheel speed values to determine if slip is occurring, Maximum Transmissible Torque Estimation makes use of a closed-loop disturbance observer to compute the maximum transmissible torque possible without inducing slip and using it as a limitation on the input signal, and Sliding Mode Control uses different functions to \say{slide} along a sliding surface to stay around a specific slip value. All three controller types were developed both as speed controlled and torque controlled. All of the controllers could reduce slip heavily in simulation. The Maximum Transmissible Torque Estimation controller reduced slip the most and kept oscillations at a minimum, but was not as responsive as the others to driver commands. The conclusion was that the controller of choice would depend on the working environment of the forklift truck. In a low friction environment where slip is expected to occur often, the Maximum Transmissible Torque Estimation controller is advisable, while the other two would be a better choice for environment with low slip occurrence. The use of torque control, while often better with regards to decreasing slip, could not be advised due to a perceived increase in implementation cost.

HIEU, NGUYEN TRUNG, and NGUYEN TRUNG HIEU. "Lateral Dynamics Stability Control of Four In-Wheel Motors Electric Vehicles with Torque Distribution and Maximum Transmissible Torque Estimation." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/95q3fx.

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碩士
國立臺北科技大學
車輛工程系所
103
In this work, a three-level design control strategy is proposed for lateral dynamics stability control of electric vehicles with four in-wheel motors. In order to avoid the design of complex control laws which require the knowledge of vehicle parameters, a yaw rate following controller based on model-based proportional control is designed in the first level. The sideslip angle limitation is not considered in the first level to reduce the need of sideslip angle estimation and simplify the control law design. The second level is control allocation which distributes the wheel torques to generate the required yaw moment command according to the constraint of work load ratio at each wheel. The associated weighting matrix is designed using the work load ratio at each wheel and combined with torque ratio feedback to prevent saturating at tire. Active Fault Tolerant Control is integrated to enhance the vehicle’s safety. The bearing damping coefficient is estimated by using Kalman filter approach for system identification. This implementation significantly improves the convergence time of bearing damping identification. The maximum transmissible torque estimation method is used as the third level for traction control and anti-lock braking. The proposed control is evaluated using double lane change maneuver in CarSim. Electric differential can be achieved for the normal driving condition. Under critical driving situation on road surface with low

Тези доповідей конференцій з теми "Maximum transmissible torque":

Song, Ziyou, Jianqiu Li, Liangfei Xu, and Minggao Ouyang. "Traction Control System for EV Based on Modified Maximum Transmissible Torque Estimation." In 2013 IEEE Vehicle Power and Propulsion Conference (VPPC). IEEE, 2013. http://dx.doi.org/10.1109/vppc.2013.6671724.

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Bucchi, Francesco, Mohammad Elahinia, Paola Forte, and Francesco Frendo. "Development and Testing of a Hybrid SMA/MR Passive Clutch." In ASME 2014 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/smasis2014-7496.

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The reduction of consumption and emissions is a key factor in modern vehicle design. The overall vehicle efficiency is pursued in several ways, including the reduction of consumption of the auxiliary devices (e.g. water pumps, oil pumps, vacuum pumps etc.). In this paper, using two different smart materials (i.e. magnetorheological fluids and shape memory alloys) a device aimed at disengaging the vacuum pump was developed. The conceived device is composed of a magnetorheological (MR) clutch excited by permanent magnets coaxially manufactured with a sliding spline sleeve moved by shape memory alloys (SMA) springs. In the MR clutch, the magnet can move under the effect of a passive pneumatic system. The magnetic field in the fluid varies with the magnets displacement and two steady positions are possible: the engaged clutch (ON) and the disengaged clutch (OFF). The torque in the ON configuration is high enough to drive the vacuum pump during normal operating conditions, whereas the low torque value in the OFF condition guarantees power saving up to 150 W. In particular operating conditions (i.e. at low environmental temperatures) the torque necessary to start the vacuum pump may exceed the maximum transmissible torque of the MR clutch. For this reason a sliding spline sleeve, led by two SMA springs which counteract the force of two traditional springs was developed. A dummy plain sliding sleeve with SMA and conventional springs was numerically developed and tested. The fairly good agreement of the results confirmed the feasibility of the combined SMA/MR device.