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考虑作动器速率饱和的人机闭环系统稳定域

, PP. 215-219

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Abstract:

针对作动器速率饱和引起的Ⅱ型驾驶员诱发振荡(PIO,PilotInducedOscillations)严重威胁先进战机飞行安全的问题,研究了计及作动器速率饱和的人机闭环系统稳定域.建立了考虑作动器速率饱和的人机闭环系统非线性模型,引入增广状态变量以及饱和度函数处理速率饱和环节,应用椭球体不变集估计人机闭环系统的稳定域,得到了稳定域估计的一般算法.通过时域仿真研究了所估计的稳定域的保守性,研究了驾驶员操纵增益以及作动器速率饱和值对稳定域的影响.结果表明稳定域法物理意义清晰、结果直观,可用于人机闭环系统稳定性的评估.研究结果可为先进战机飞行控制系统的设计提供理论依据.

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