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带外扰观测器的双通道系统,当被控对象参数波动时,系统稳定性可能急剧恶化.本文在模拟机仿真的基础上,对一种双通道调速系统的稳定参数域进行了研究,提出一种工程估算方法——“参数相对摄动法”——计算参数波动范围和系统稳定性的关系;并可用来分析参数波动对静差的影响.文章对外扰观测器的参数整定方法也作了讨论.
When the parameters of the controlled object fluctuate, the stability of the two-channel system with external disturbance observer may deteriorate sharply.Based on the simulation of the simulator, this paper studies the stability parameter domain of a dual-channel speed regulation system, A method of engineering estimation, “relative parameter perturbation method”, is proposed to calculate the relationship between the parameter fluctuation range and system stability, and to analyze the influence of parameter fluctuation on the static error. Made a discussion.