在未建模的动态下对干扰观察者的性能恢复和稳定性分析
1Department of Electrical Engineering and Institute of Advanced Materials and Systems, Sookmyung Women's University, Seoul 04310, Republic of Korea.
Sensors (Basel, Switzerland)
|December 17, 2024
概括
在反系统中忽视未建模的动态,可能会导致不稳定. 本研究分析了干扰观察者对这些动态的稳定性,为稳定和高性能控制系统提供设计指南.
科学领域:
- 控制系统工程 控制系统工程
- 强大的控制理论.
背景情况:
- 反系统的设计往往通过忽略未建模的动力学 (例如,执行器,传感器) 来简化.
- 这种简化假设未建模的动态是可以忽略不计的,但可能会损害系统的稳定性和性能,特别是在快速控制器动态或高增益反的情况下.
- 干扰观察器在工业中很常见,用于干扰拒绝和不确定性补偿,因为它们的简单性和有效性.
研究的目的:
- 分析未建模的动态对基于观察者的干扰控制 (DOBC) 的影响.
- 为了揭示干扰观察者的强度和干扰拒绝能力.
- 提出设计指南,以确保在没有建模的动态存在时具有强大的稳定性.
主要方法:
- 单一扰动理论被用来分析扰动观察者的强度和扰动排斥性能.
- 该研究研究了未建模的动态对DOBC系统的稳定性和性能的影响.
主要成果:
- 分析揭示了干扰观察者对未建模的动态的强度.
- 奇点扰动理论为干扰排斥性能提供了洞察力.
- 提出了一个设计准则,以确保在没有建模的动态存在时具有强大的稳定性.
- 干扰观察者被证明可以恢复工厂的名义模型的名义性能.
结论:
- 基于观察者的干扰控制可以保持稳定性和性能,尽管没有建模的动态.
- 基于奇点扰动理论的设计准则提高了DOBC系统的稳定性.
- 这项研究为设计可靠的控制系统在存在模型不确定性的情况下提供了一个框架.
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