A Design Method for Fault Reconfiguration and Fault-Tolerant Control of a Servo Motor

作者：He, Jing; Zhang, Changfan^*

来源：Mathematical Problems in Engineering, 2013, 647571.

DOI：10.1155/2013/647571

A design scheme that integrates fault reconfiguration and fault-tolerant position control is proposed for a nonlinear servo system with friction. Analysis of the non-linear friction torque and fault in the system is used to guide design of a sliding mode position controller. A sliding mode observer is designed to achieve fault reconfiguration based on the equivalence principle. Thus, active fault-tolerant position control of the system can be realized. A real-time simulation experiment is performed on a hardware-in-loop simulation platform. The results show that the system reconfigures well for both incipient and abrupt faults. Under the fault-tolerant control mechanism, the output signal for the system position can rapidly track given values without being influenced by faults.

• 出版日期2013
• 单位中国人民解放军国防科学技术大学; 湖南工业大学