论文标题

使用伪敏感性调整一类重置元件

Tuning of a Class of Reset Elements Using Pseudo-Sensitivities

论文作者

Dastjerdi, Ali Ahmadi, Saikumar, Niranjan, HosseinNia, S. H.

论文摘要

当前,由于高科技行业的期望不断上升,对线性PID控制器的更好替代方案的需求正在增加。在文献中,已经表明,相位(CGLP)补偿器的增益铅的常数(一种是重置元件)具有改善系统性能的很高潜力。尽管很少有研究这些补偿器调整的作品,但是在这些方法中尚未考虑高阶谐波和稳态表现。最近,已经开发了一个频域框架来分析重置控制系统的闭环性能,其中包括高阶谐波。在本文中,该频域框架与循环整形约束相结合,为CGLP补偿器提供可靠的频域调整方法。最后,将CGLP补偿器的不同性能指标与精确定位阶段的PID控制器的指标进行了比较。结果表明,提出的调整方法是有效的,带有CGLP补偿器的系统可实现与PID控制器的动态性能相比。

Currently, the demand for a better alternative to linear PID controllers is increasing due to the rising expectations of the high-tech industry. In literature, it has been shown that Constant in gain Lead in phase (CgLp) compensators, which are a type of reset element, have high potential to improve the performance of systems. Although there are few works which investigate tuning of these compensators, the high order harmonics and steady-state performances have not yet been considered in these methods. Recently, a frequencydomain framework has been developed to analyze closed-loop performances of reset control systems which includes high order harmonics. In this paper, this frequency-domain framework is combined with loop-shaping constraints to provide a reliable frequency-domain tuning method for CgLp compensators. Finally, different performance metrics of a CgLp compensator are compared with those of a PID controller on a precision positioning stage. The results show that the presented tuning method is effective, and the system with the CgLp compensator achieves superior dynamic performance to that of the PID controller.

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