文章基本信息

标题：Redistributing Controller Orders to Increase Positioning Bandwidth in Nanopositioners
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作者：Adedayo K. Babarinde ; Linlin Li ; Jakub Kuncak 等
期刊名称：IFAC PapersOnLine
印刷版ISSN：2405-8963
出版年度：2021
卷号：54
期号：21
页码：97-102
DOI：10.1016/j.ifacol.2021.12.017
语种：English
出版社：Elsevier
摘要：AbstractInteger-order damping and tracking controllers are typically used in tandem to overcome resonance and hysteresis induced positioning errors in piezo-actuated nanopositioners. This paper takes a novel approach of strategically redistributing the controller orders to achieve significant positioning bandwidth improvement, without any significant increase in the design complexity. The Positive Position Feedback (PPF) controller combined with a suitably gained Integral tracking controller is used as a candidate to demonstrate the efficacy of the proposed technique. The resulting fractional-order PPF damping and Integral tracking controllers result in increasing the overall positioning bandwidth of the closed-loop system by 37%; and subsequent improvement in positioning accuracy while tracking high-frequency triangular trajectories.
关键词：KeywordsNanopositionerspiezoelectric actuatorpositive position feedbacktracking controlfractional-order control