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Modeling and Co-simulation of the Electric Power Steerning System

Author: HuJianFeng
Tutor: ChenDingYue
School: Chang'an University
Course: Vehicle Engineering
Keywords: Electric Power Steering ADAMS MATLAB / Simulink PID Handling and stability Co-simulation
CLC: U463.444
Type: Master's thesis
Year: 2011
Downloads: 99
Quote: 0
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Abstract


The electric power steering system affect vehicle handling and stability , ride safety critical components , a good solution to the vehicle steering contradiction of \hot spots. Car EPS co-simulation study , due to the uncertainty simplify the complexity of the car model and the control algorithm , the establishment of the automobile model and control strategy of choice is the center of the thesis . This article in a sedan model and virtual prototyping technology software ADAMS / Car , based on a simplified physical model of the sedan to establish vehicle dynamics models to establish the EPS system control input and output variables in the model ; determine the EPS system assist characteristic curve , and according to the literature data and formulas established a mathematical model of the EPS system , sub-module of the system based on the mathematical model is established in MATLAB / Simulink software , and the simultaneous combination to determine the power back positive simulation PID control strategy . Vehicle model , based on the actual driving test on the vehicle using ADAMS / Controls with MATLAB / Simulink software , including turning the light back positive pulse of the steering wheel angle , steering wheel angle step of vehicle handling and stability combined simulation trials. By comparing simulation test vehicle equipped with EPS systems not installed EPS system , vehicle handling and stability analysis of comparative study . The results show that the EPS system equipped with a PID control the car better handling and stability than the car not mounted EPS system to improve the smooth and safe car at low speed steering lightweight and high-speed steering . A good solution to the contradictions of automotive steering \

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CLC: > Transportation > Road transport > Automotive Engineering > Automotive structural components > Steering system > Steering booster > Power -type
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