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本文根据PIO问题研究的需要,考虑到操纵系统非线性(间隙和摩擦等)对PIO问题影响的严重性,推导了包括非线性环节在内的,驾驶员-操纵系统-飞机本体组合系统的纵向动态结构图,并用DMJ-3A电子模拟计算机,以某歼击机低空大速度正常状态(力臂处于小臂)和故障状态(力臂处于大臂)为例进行了模拟计算。计算结果与飞行实践是一致的。从而初步说明作者提出的结构图(即PIO计算方法)既是可信的,也是具有实际分析使用价值的。
In this paper, according to the need of PIO research, taking into account the severity of PIO problems caused by the nonlinearity of the control system (clearance and friction), the longitudinal direction of the pilot-control system-aircraft body assembly system including the nonlinearity is deduced. Dynamic structure chart, and with the DMJ-3A electronic simulation computer, taking a fighter low-speed large-speed normal state (arm in arm) and fault condition (arm in arm) as an example. The calculation results are consistent with the flight practice. The preliminary description of the structure proposed by the author (that is, PIO calculation method) is both credible and practical analysis of the value.