建立科学有效的驾驶员控制行为模型是驾驶员诱发振荡(PIO)研究的基础。首先,根据驾驶员控制模式不同,分别建立了驾驶员的补偿、追踪和同步控制行为模型;其次,通过仿真计算研究了不同驾驶员控制行为模型对飞机PIO易感性的影响,建立含有舵机速率限制环节的人机闭环系统,使用描述函数法预测不同驾驶员控制行为模式下某型飞机的PIO发生频率。仿真结果表明,相对于驾驶员的补偿行为,同步行为更易诱发II型PIO。
It is the foundation of the research on Pilot Induced Oscillations (PIO) to establish scientific and effective pilot control behavior models. Firstly, compensatory, pursuit and synchronous pilot models were built up according to the differences of pilot control modes. Secondly, the impact of different pilot control models on aircraft PIO susceptibility was studied through simulation. The closed-loop aircraft-pilot system including rate limiting element was established. The describing function method was applied to predict PIO frequency of one plane considering different pilot control models. The result showed that compared with compensatory behaviol; synchronous behavior is more possible to cause Category II PIO.