基于模型预测控制的航空发动机传感器容错控制

针对航空发动机传感器的硬故障和软故障，在模型预测控制（model predictive control，MPC）的基础之上，提出了一种调整参考轨迹的主动容错控制（fault tolerant control,FTC）方法。首先，该方法使用故障诊断（fault detection and diagnosis , FDD）单元诊断出故障信息；然后，监控决策机制根据故障信息在线的调整参考轨迹；最后，控制器通过调整控制量使得输出跟踪新的参考轨迹，从而实现传感器故障的主动容错控制。同时，对CMPASS-90K涡扇发动机进行了主动容错控制仿真，验证了所提方法的有效性，并分析了容错效果的影响因素。

Fault tolerant control for sensor of aero engine based on model predictive control

For the hard faults and soft faults of aero-engine sensors, an active fault tolerant control method for adjusting the reference trajectory is proposed, which is based on the MPC controller. First, the fault information was diagnosed by the diagnosis unit. Then, according to the fault information, the reference trajectory was adjusted by the supervisory unit. Finally, the new reference trajectory was tracked in MPC controller by adjusting the control variables to realize the active fault tolerant control. At the same time, the effectiveness of the proposed method was verified, and the influencing factors of fault tolerance were analyzed in the simulation of the CMPASS-90K turbofan engine.