Condition Monitoring of Flight Control Systems Based on Hysteresis Loops

This paper proposes a new model for condition monitoring of flight control systems, and confirms that a high hysteresis can affect the flight control. By studying the mechanism of flight control systems, we find that the hysteresis of mechanical transmission can affect the flight control accuracy of aircrafts. Meanwhile, a bran-new condition monitoring method for flight control systems is designed. Hysteresis loops can be fitted from flight parameters, and an effective method called Statistical Process Control (SPC) is used to monitor the size of hysteresis loops. We can derive the health status from the SPC report, which is of great significance for the condition monitoring of flight control systems.