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Research on Fault Tolerant Control of Active Suspension SystemBased on Kalman Filtering and LQG Control Algorithm(PDF)

南京师范大学学报（工程技术版）[ISSN:1006-6977/CN:61-1281/TN]

Issue:
2020年04期
Page:
30-36
Research Field:
电气工程
Publishing date:

Info

Title:
Research on Fault Tolerant Control of Active Suspension SystemBased on Kalman Filtering and LQG Control Algorithm
Author(s):
Wang Yurong; Zhang Hailong; Wang Enrong
NARI School of Electrical and Automation Engineering,Nangjing Normal University,Nangjing 210023,China
Keywords:
active suspension; LQG controller; Kalman filter; fault-tolerant control
PACS:
U463.33
DOI:
10.3969/j.issn.1672-1292.2020.04.005
Abstract:
Sensor-doped noise signal is a kind of fault that will occur during the operation of active suspension system. Aiming at the failure of the acceleration sensor of the two-degree-of-freedom vehicle active suspension system,this paper designs a linear quadratic Gaussian(LQG)controller based on the optimal control theory and Kalman filter algorithm. Under the excitation of impact and measured road surface spectrum,a comprehensive suspension performance simulation analysis is carried out. The results show that compared with the non-fault-tolerant situation,the sprung and unsprung mass transmission rate and the suspension dynamic stroke transmission rate after the fault-tolerant control are adopted in the fault state are greatly reduced,which effectively improves the driving comfort and the tire dynamics. The load transmission rate has been significantly increased to ensure safety,and the overall performance of the active suspension can be approximately restored to that in a failure-free condition.

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Last Update: 2020-12-15