|Fault-tolerant Controller Design for Active Suspension System with Proportional Differential Sliding Mode Observer
Bin Lin and Xiaoyu Su*
International Journal of Control, Automation, and Systems, vol. 17, no. 7, pp.1751-1761, 2019
Abstract : This paper proposes a fault-tolerant control scheme for the quarter active suspension systems with uncertainties and nonlinear. First, by the generalized augmented transformation, state variables, actuator faults, sensor
faults and external disturbances are converted to the augmented states then the subsequent calculation becomes
simple. Second, on the basis of the generalized augmented system, a new sliding mode observer with proportional terms and differential terms is designed for state estimation and fault reconstruction. In order to improve the
ride comfort and operation stability of the automobile in an all-round way, a fault-tolerant controller is designed
for active suspension system. The simulations are conducted to illustrate the effectiveness and advantages of this
proposed observer and control strategy.
Automobile active suspension, fault tolerance control, proportional differential sliding mode observer.