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Study on Modeling and Controlling of ASR Based on Rear Wheel Driving Vehicle

Author: DingHua
Tutor: HuJianJun
School: Chongqing University
Course: Vehicle Engineering
Keywords: Drive-slip control system Control Simulation Analysis
CLC: U463.5
Type: Master's thesis
Year: 2009
Downloads: 326
Quote: 4
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Abstract


Drive-slip control system can significantly improve the power and handling stability of the car weak adhesion of ice, snow , wet and sandy road . Currently, the foreign equipped vehicles come out of the drive-slip control system products and patents . Domestic anti-slip control system is just beginning , and part of the domestic car equipped with drive-slip control system does not have independent intellectual property rights . This after -wheel drive car as a driving engine output torque regulation and differential locking anti-skid control system for the study, two control approaches , drive-slip control system equipped with rear-wheel drive car in different road conditions the power of simulation. In this paper, the following studies : ( 1 ) proposed rear-wheel drive car drive-slip control system simulation model . Create a rear-wheel drive car overall dynamic mathematical model and Simulink blocks . ② friction ellipse , combined with rear-wheel drive vehicle yaw dynamics equation , linear acceleration driving , high-speed steering with isolated roads wheel drive torque distribution between driving stability and made a drive-slip control system control strategy. ③ determine the implementation of the system programs : analysis of the structure and working principle of ordinary differential and limited slip differential , limited slip differential mathematical model , the design pressure of the hydraulic control system to adjust the program and the establishment of the mathematical model . Analysis of the the typical electronic throttle structure and working principle , through the gear transmission equivalent to simplify the establishment of a mathematical model of the electronic throttle . ( 4 ) design logic threshold when the vehicle is traveling in different road , fuzzy and PID controllers . Drive wheel slip rate and the driving wheel speed difference controller input , rear-wheel drive automobile wheel drive torque distribution control system algorithm . Respectively , to the target slip rate and the target vehicle speed as throttle controller input , the control algorithm of the throttle control system . Overall simulation model , separation pavement, board pavement , low adhesion road and docking road vehicle dynamic simulation studies , and the simulation results of the different control methods were compared and analyzed .

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CLC: > Transportation > Road transport > Automotive Engineering > Automotive structural components > Braking system
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