Vehicle Integrated Control (ABS, ASUS, 4WS) With Variable Structure Control (Sliding Mode): The New Method for Active Suspension System

2005 ◽  
Author(s):  
Mahdi Salehi ◽  
Gholamreza Vossoughi
Keyword(s):  
Sliding Mode ◽  
Integrated Control ◽  
Variable Structure Control ◽  
Variable Structure ◽  
Active Suspension ◽  
Suspension System ◽  
New Method ◽  
Structure Control

Study on Active Suspension with Variable Structure Control Based on the Fractional Order Exponential Reaching Law

2017 ◽  
Vol 872 ◽  
pp. 337-345
Author(s):  
Yan Dong Chen
Keyword(s):  
Fractional Order ◽  
Reference Model ◽  
Sliding Mode ◽  
Variable Structure Control ◽  
Variable Structure ◽  
Active Suspension ◽  
Mode Switching ◽  
Structure Control ◽  
Reaching Law ◽  
Exponential Reaching Law

Based on the dynamic model of 1/4 vehicle suspension, an active control system is designed using the fractional order exponential reaching law of model following variable structure control strategy. An active suspension with linear quadratic optimal control is used as the reference model. The sliding mode switching surface parameters is designed by pole placement method to ensure the stability of the system. At the same time, combined with the index reaching law proposed by Professor Gao Wei Bing and the definition and properties of fractional index, constructs a similar fractional order exponent reaching law to improve the dynamic quality of sliding mode motion. And in MATLAB, system modeling and controller design are implemented. By setting up experiments, the different suspensions are compared. The results show that compared with the passive suspension, the performance of the vehicle can be improved better, and the performance of the tracking reference model has good tracking performance. Moreover, compared with the integral exponential reaching law, the chattering can be more effectively weakened. Finally, before and after the change of vehicle parameters in the simulation, the results show that the system has good robustness.

scholarly journals Dual-stage adaptive finite-time modified function projective multi-lag combined synchronization for multiple uncertain chaotic systems

2017 ◽  
Vol 15 (1) ◽  
pp. 1035-1047 ◽  
Author(s):  
Qiaoping Li ◽  
Sanyang Liu
Keyword(s):  
Finite Time ◽  
Chaotic Systems ◽  
Sliding Mode ◽  
Variable Structure Control ◽  
Variable Structure ◽  
New Method ◽  
Control Technique ◽  
Unknown Parameters ◽  
Structure Control ◽  
Dual Stage

Abstract In this paper, for multiple different chaotic systems with unknown bounded disturbances and fully unknown parameters, a more general synchronization method called modified function projective multi-lag combined synchronization is proposed. This new method covers almost all of the synchronization methods available. As an advantage of the new method, the drive system is a linear combination of multiple chaotic systems, which makes the signal hidden channels more abundant and the signal hidden methods more flexible. Based on the finite-time stability theory and the sliding mode variable structure control technique, a dual-stage adaptive variable structure control scheme is established to realize the finite-time synchronization and to tackle the parameters well. The detailed theoretical derivation and representative numerical simulation is put forward to demonstrate the correctness and effectiveness of the advanced scheme.

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