基于速率限制舵机的II型PIO预测方法研究

为预测由于速率限制舵机引起的II型PIO,根据速率限制舵机的特点,建立了简化的速率限制舵机模型,在时域内对其动态特性进行了仿真分析,针对速率限制舵机非线性的特点,采用了描述函数法来研究闭环系统的特性,推导了饱和速率限制舵机的描述函数模型,研究了Gap准则预测II型PIO的具体方法。最后,通过一个简单的算例,介绍了这种预测方法的整个过程。该方法简便明晰,为非线性人机闭环系统的PIO预测提供了一种参考。

Research on the prediction of category II PIO based on rate-limiting actuator

To predict category II PIO based on rate-limiting actuator, according to the character of rate-limiting actuator, building the simplified model of rate-limiting actuator,simulating in the time domain, for the character of nonlinear ,adopting describing function, and deducing the describing function of saturation rate-limiting actuator, researching the method of Gap criterion in predicting category II PIO. At last, through an simple example , giving the whole process of the method. The method is simple and clear, it provides an reference for PIO prediction of nonlinear aircraft-pilot closed loop system.