中文摘要：

由速率饱和引起的Ⅱ型PIO（Pilot-in-the-Loop Oscillations）严重威胁着飞行安全。在基于描述函数法的Ⅱ型PIO预测中,建立了速率限制环节的描述函数模型,构建了具有速率限制环节的人机系统模型,分别采用驾驶员同步控制模型、补偿控制模型及Neal-Smith模型对人机系统Ⅱ型PIO预测进行了仿真对比研究。仿真结果表明代表着不同控制模式的驾驶员模型对预测结果有显著影响,飞行试验结果也表明不同的驾驶员对同一PIO构型给出了有差异的评分。

英文摘要：

Rate saturation may cause Category Ⅱ PIO （pilot-in-the-loop oscillations） and flight safety has been threatened by it. The Category Ⅱ PIO can be predicted by the describing function method. The describing function for rate limiting was derived and the model of pilot-vehicle system （PVS） with rate limiting was built. The prediction results of Category Ⅱ PIO were compared according to synchronous control model compensatory control model and Neal-Smith pilot model. Simulation results demonstrate that the prediction results are affected by different pilot model representing distinctive control patterns and pilot rating variability is also discovered in the flight experiment.