Fault Diagnosis for a Class of Active Suspension Systems with Dynamic Actuators' Faults

作者：Mao, Zehui; Wang, Yue; Jiang, Bin; Tao, Gang^*

来源：International Journal of Control Automation and Systems, 2016, 14(5): 1160-1172.

DOI：10.1007/s12555-014-0552-z

• Active suspension systems
• dynamic actuators
• fault diagnosis
• fault-tolerant control
• rail vehicles

In this paper, a new fault diagnosis and fault-tolerant control method for a class of active suspension systems with actuator faults is proposed. The considered actuators have uncertain dynamic characteristics, which are the electromagnetic actuators made up with a motor control system and a ball screw transmission mechanism. To detect such suspension system actuator faults, dynamic fault diagnosis observers are designed for the actuators to estimate the possible faults. The actuators are analyzed to first and second order dynamic models, respectively, whose output can be measured but the rate is non-measurable. Then, the fault diagnosis method is developed for these two kinds of models to obtain the fault information. Using the fault estimation and adaptive control technique, a robust fault-tolerant controller is constructed to guarantee the performance of the rail vehicles in the faulty case. Finally, using the parameters of a practical suspension system, a simulation study is conducted to show the effectiveness of the proposed method.

• 出版日期2016-10
• 单位南京航空航天大学