Design of Longitudinal Control System for Brushless Motor Electric Vehicle Using VSTC Control Theory

In this study, in order to improve steering stability during turning, we devised an inner and outer wheel driving force control system that is based on the steering angle and steering angular velocity, and verified its effectiveness via running tests. In the driving force control system based on steering angle, the inner wheel driving force is weakened in proportion to the steering angle during a turn, and the difference in driving force is applied to the inner and outer wheels by strengthening the outer wheel driving force. In the driving force control (based on steering angular velocity), the value obtained by multiplying the driving force constant and the steering angular velocity, that differentiates the driver steering input during turning output as the driving force of the inner and outer wheels. By controlling the driving force of the inner and outer wheels, it reduces the maximum steering angle by 40 deg and it became possible to improve the cornering marginal performance and improve the steering stability at the J-turn. In the pylon slalom it reduces the maximum steering angle by 45 deg and it became possible to improve the responsiveness of the vehicle. Control by steering angle is effective during steady turning, while control by steering angular velocity is effective during sharp turning. The inner and outer wheel driving force control are expected to further improve steering stability.

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Robust Two-degree-of-freedom Control Based on H∞ Method for PMSM Drive System

Recent Advances in Electrical & Electronic Engineering (Formerly Recent Patents on Electrical & Electronic Engineering) ◽

10.2174/2352096512666190319164237 ◽

2020 ◽

Vol 13 (4) ◽

pp. 496-506

Author(s):

Qixin Zhu ◽

Lei Xiong ◽

Hongli Liu ◽

Yonghong Zhu ◽

Guoping Zhang

Keyword(s):

Control System ◽

Control Theory ◽

Position Control ◽

Dynamic Performance ◽

Servo System ◽

Degree Of Freedom ◽

Trade Off ◽

Standard Design ◽

Position Controller ◽

Two Degree Of Freedom

Background: The conventional method using one-degree-of-freedom (1DOF) controller for Permanent Magnet Synchronous Motor (PMSM) servo system has the trade-off problem between the dynamic performance and the robustness. Methods: In this paper, by using H∞ control theory, a novel robust two-degree-of-freedom (2DOF) controller has been proposed to improve the position control performance of PMSM servo system. Using robust control theory and 2DOF control theory, a H∞ robust position controller has been designed and discussed in detail. Results: The trade-off problem between the dynamic performance and robustness which exists in one-degree-of-freedom (1DOF) control can be dealt with by the application of 2DOF control theory. Then, through H∞ control theory, the design of robust position controller can be translated to H∞ robust standard design problem. Moreover, the control system with robust controller has been proved to be stable. Conclusion: Further simulation results demonstrate that compared with the conventional PID control, the designed control system has better robustness and attenuation to the disturbance of load impact.

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Control System of Single-drive Double-branch Electric Vehicle Door Latch

Proceedings of the 2020 2nd International Conference on Robotics, Intelligent Control and Artificial Intelligence ◽

10.1145/3438872.3439121 ◽

2020 ◽

Author(s):

Zhiyang Qu ◽

Lubin Hang ◽

Huiyu Deng ◽

Xiaobo Huang ◽

Mingyuan Wang ◽

...

Keyword(s):

Control System ◽

Electric Vehicle

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Optimization and Enhancement of Charging Control System of Electric Vehicle Using MATLAB SIMULINK

IOP Conference Series Materials Science and Engineering ◽

10.1088/1757-899x/1105/1/012004 ◽

2021 ◽

Vol 1105 (1) ◽

pp. 012004

Author(s):

R H Ali Faris ◽

A A Ibrahim ◽

N B Mohamad wasel ◽

M M Abdulwahid ◽

M F Mosleh

Keyword(s):

Control System ◽

Electric Vehicle ◽

Matlab Simulink ◽

Charging Control

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Modeling and Simulation of Improved Vector Control System for PMSM

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.548-549.819 ◽

2014 ◽

Vol 548-549 ◽

pp. 819-823

Author(s):

Xi Juan Wang ◽

Tao Zhou ◽

Jing Xiao Feng ◽

Yu Peng Pei

Keyword(s):

Control System ◽

Control Theory ◽

Modeling And Simulation ◽

Vector Control ◽

System Model ◽

Excellent Performance ◽

Matlab Simulink ◽

Ac Motor ◽

Control System Model ◽

Vector Control System

In the AC control system, vector control theory is very popular as it makes the AC motor achieve the performance as perfect as DC motor [1]. In the paper, the vector control theory is briefly introduced, and then a vector control system model is builded in the matlab/simulink, and the SVPWM technique is adopted. The results show that the improved vector control sytem of PMSM has a excellent performance.

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Design and Experimental Implementation of Longitudinal Control for a Platoon of Automated Vehicles

Journal of Dynamic Systems Measurement and Control ◽

10.1115/1.1286682 ◽

1998 ◽

Vol 122 (3) ◽

pp. 470-476 ◽

Cited By ~ 50

Author(s):

R. Rajamani ◽

S. B. Choi ◽

B. K. Law ◽

J. K. Hedrick ◽

R. Prohaska ◽

...

Keyword(s):

Control System ◽

Torque Converter ◽

Stable Operation ◽

Automated Vehicles ◽

Longitudinal Control ◽

The Public ◽

Automated Highways ◽

Experimental Implementation ◽

Special Challenge ◽

Upper Level

This paper presents the design and experimental implementation of a longitudinal control system for the operation of automated vehicles in platoons. The control system on each vehicle is designed to have a hierarchical structure and consists of an upper level controller and a lower level controller. The upper controller determines the desired acceleration for each vehicle in the platoon so as to maintain safe string-stable operation even at very small intervehicle spacing. The lower controller utilizes vehicle-specific parameters and determines the throttle and/or brake commands required to track the desired acceleration. A special challenge handled in the design of the lower level controller is low-speed operation that involves gear changes and torque converter dynamics. The paper also presents the design of longitudinal intra-platoon maneuvers that are required in order to allow any car in the platoon to make an exit. The paper presents extensive experimental results from the public NAHSC demonstration of automated highways conducted in August 1997 at San Diego, California. The demonstration included an eight-car platoon operating continuously over several weeks with passenger rides given to over a thousand visitors. The maneuvers demonstrated included starting the automated vehicles from complete rest, accelerating to cruising speed, allowing any vehicle to exit from the platoon, allowing new vehicles to join the platoon and bringing the platoon to a complete stop at the end of the highway. [S0022-0434(00)01903-1]

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Implementation and vehicle tests of a vehicle stop-and-go cruise control system

Proceedings of the Institution of Mechanical Engineers Part D Journal of Automobile Engineering ◽

10.1243/095440702760178479 ◽

2002 ◽

Vol 216 (7) ◽

pp. 537-544 ◽

Cited By ~ 13

Author(s):

K Yi ◽

N Ryu ◽

H J Yoon ◽

K Huh ◽

D Cho ◽

...

Keyword(s):

Control System ◽

Control Algorithm ◽

Speed Control ◽

Step Motor ◽

Cruise Control ◽

Longitudinal Control ◽

Linear Quadratic Optimal Control ◽

Millimetre Wave ◽

Stop And Go ◽

Wave Radar

Implementation and vehicle tests of a vehicle longitudinal control algorithm for stop-and-go cruise control have been performed. The vehicle longitudinal control scheme consists of a set-speed control algorithm, a speed control algorithm, and a distance control algorithm. A desired acceleration for the vehicle for the control of vehicle-to-vehicle relative speed and clearance has been designed using linear quadratic optimal control theory. Performance of the control algorithm has been investigated via vehicle tests. Vehicle tests have been conducted using two test vehicles. A 2000 cm3 passenger car equipped with a radar distance sensor, throttle/brake actuators and a controller has been used as a subject vehicle in the vehicle tests. A millimetre wave radar sensor has been used for distance measurement. A step motor and an electronic vacuum booster have been used for throttle/brake actuators. It has been shown that the implemented vehicle longitudinal control system can provide satisfactory performance in vehicle set-speed control and vehicle clearance control at lower speeds.

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