2014•Computer and Digital EngineeringRequires access

Semi-active Vehicle Suspension Based on Fuzzy-PID Control

Guo Quan-mi

Abstract

Through the establishment of 1/4vehicle with two degrees of freedom semi-active suspension model,a two-input one-output fuzzy-PID controller was designed,study the semi-active suspension system with the software of Matlab/Simulink was studied.The results show that compared with the passive-active suspension system and the PID control semi-active suspension system,vehicle semi-active suspension system based on fuzzy PID control can effectively reduce the mass acceleration and wheel dynamic load,improve the ride comfort.Finally,semi-active suspension system based on the fuzzy PID control,was simulated in the same road level under different speed research to show that with the increase of the vehicle speed, ride comfort and handling stability and security will decline.

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Key concepts: PID controller, Computer science, Active suspension, Control theory (sociology), Suspension (topology), MATLAB, Acceleration, Fuzzy control system