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2010•Agricultural Equipment & Vehicle EngineeringRequires access

The Research of Automobile Suspension System Performance Based on the Fuzzy Control

FU Deng-hong

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Abstract

The research of active suspension system performance is a frontier topic for the vehicle dynamics and control field.Automobile suspension is assumed as the research object.Dynamics performance index of suspension is analyzed,and dynamic model and state space model are established.According to the control principle,a fuzzy controller is established after the speed and acceleration are considered as errors and error rate.Based on the suspension mathematical model and fuzzy controller,the model is simulated by MATLAB/SIMULINK software,and the performance of active suspension is compared to the passive suspension.The result shows that vibration of active suspension can be suppressed effectively using the fuzzy control algorithm.Its performance is improved,and the requirement of stability and comfort is satisfied.

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What this paper is about

The research of active suspension system performance is a frontier topic for the vehicle dynamics and control field.Automobile suspension is assumed as the research object.Dynamics performance index of suspension is analyzed,and dynamic model and state space model are established.According to the control principle,a fuzzy controller is established after the speed and acceleration are considered as errors and error rate.Based on the suspension mathematical model and fuzzy controller,the model is simulated by MATLAB/SIMULINK software,and the performance of active suspension is compared to the passive suspension.The result shows that vibration of active suspension can be suppressed effectively using the fuzzy control algorithm.Its performance is improved,and the requirement of stability and comfort is satisfied.

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Available abstract

The research of active suspension system performance is a frontier topic for the vehicle dynamics and control field.Automobile suspension is assumed as the research object.Dynamics performance index of suspension is analyzed,and dynamic model and state space model are established.According to the control principle,a fuzzy controller is established after the speed and acceleration are considered as errors and error rate.Based on the suspension mathematical model and fuzzy controller,the model is simulated by MATLAB/SIMULINK software,and the performance of active suspension is compared to the passive suspension.The result shows that vibration of active suspension can be suppressed effectively using the fuzzy control algorithm.Its performance is improved,and the requirement of stability and comfort is satisfied.

Key concepts: Suspension (topology), Control theory (sociology), Controller (irrigation), MATLAB, Engineering, Active suspension, Acceleration, Fuzzy logic

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