Research on variable universe fuzzy PID control for semi-active suspension with CDC dampers based on dynamic adjustment functions

The vehicle suspension system is a complex system with multiple variables, nonlinearity and time-varying characteristics, and the traditional variable universe fuzzy PID control algorithm has the problems of over-reliance on expert experience and non-adaptive adjustment of the contracting-expanding...

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Bibliographic Details
Published in:Scientific reports 2024-02, Vol.14 (1), p.3442-16, Article 3442
Main Authors: Ji, Guanggang, Zhang, Lidong, Cai, Mingda, Meng, Xianke, Du, Zhengyu, Ruan, Jiuhong, Guan, Shenhao, Liu, Zhiwen
Format: Article
Language:English
Subjects:
639/166
639/4077
Adaptability
Control algorithms
Humanities and Social Sciences
multidisciplinary
Nonlinear systems
Science
Science (multidisciplinary)
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Summary:The vehicle suspension system is a complex system with multiple variables, nonlinearity and time-varying characteristics, and the traditional variable universe fuzzy PID control algorithm has the problems of over-reliance on expert experience and non-adaptive adjustment of the contracting-expanding factor parameters, which make it difficult to achieve a better control effect. In this paper, the system error e ( t ) and its change rate ec ( t ) are introduced into the contracting-expanding factor as dynamic parameters to realize the adaptive adjustment of the contracting-expanding factor parameters, and propose a variable universe fuzzy PID control based on dynamic adjustment functions (VUFP-DAF), which uses the real-time contracting-expanding factor to realize the adaptive adjustment of the fuzzy universe, so as to improve the ride comfort of vehicles. The research results show that the proposed VUFP-DAF has strong adaptability and can effectively improve the ride comfort and handling stability of vehicles under different speeds and road excitations, providing a certain technical basis for the development of the semi-active suspension system.
ISSN:2045-2322
2045-2322
DOI:10.1038/s41598-024-54152-3