Ma Yan-Hua, Du Xian, Sun Xi-Ming, Zhao Fang-Jiao
School of Microelectronics, Dalian University of Technology, Dalian, PR China; Key Laboratory of Intelligent Control and Optimization for Industrial Equipment (Dalian University of Technology), Ministry of Education, Dalian 116023, PR China.
School of Control Science and Engineering, Dalian University of Technology, Dalian 116023, PR China; Key Laboratory of Intelligent Control and Optimization for Industrial Equipment (Dalian University of Technology), Ministry of Education, Dalian 116023, PR China.
ISA Trans. 2022 Mar;122:247-259. doi: 10.1016/j.isatra.2021.04.029. Epub 2021 Apr 26.
In this paper, an active fault-tolerant tracking control scheme for the turbofan engine under dynamic and simultaneous actuator faults and sensor faults under disturbances is proposed. First, based on the linear parameter-varying model of the turbofan engine, an H state feedback nominal controller is designed so as to achieve rotor speed tracking control with adaptive gain scheduling characteristics at different working conditions for the turbofan engine. Next, for the control system with simultaneous multiplicative actuator faults and additive sensor faults, a virtual actuator based active fault-tolerant tracking control strategy is developed to reconfigure the system such that it can obtain the similar behavior to the fault-free system without modifying the nominal controller. Specifically, in addition to handle the actuator fault by the virtual actuator, the reconfigured controller adopts a feedforward control signal to compensate for the sensor fault. Besides, in order to guarantee the reconfigured system, a sufficiency criterion is proposed. Finally, simulations have been conducted on a twin-spool turbofan engine to verify the effectiveness of the strategy.
本文提出了一种用于涡扇发动机在动态、同时存在执行器故障和传感器故障以及干扰情况下的主动容错跟踪控制方案。首先，基于涡扇发动机的线性参数变化模型，设计了一种H状态反馈标称控制器，以实现涡扇发动机在不同工况下具有自适应增益调度特性的转子速度跟踪控制。其次，针对同时存在乘性执行器故障和加性传感器故障的控制系统，开发了一种基于虚拟执行器的主动容错跟踪控制策略，对系统进行重构，使其在不修改标称控制器的情况下能够获得与无故障系统相似的行为。具体而言，除了通过虚拟执行器处理执行器故障外，重构后的控制器采用前馈控制信号来补偿传感器故障。此外，为了保证重构后的系统，提出了一个充分性准则。最后，在双转子涡扇发动机上进行了仿真，以验证该策略的有效性。
