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Redistributing Controller Orders to Increase Positioning Bandwidth in Nanopositioners

机译:重新分配控制器订单增加纳米定位器中的定位带宽

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Integer-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.
机译:整数衰减和跟踪控制器通常用于串联以克服压电型纳米定位器中的共振和滞后感应定位误差。 本文采用战略性重新分配控制器订单的新方法,以实现显着的定位带宽改善,无需任何显着增加的设计复杂性。 与适当获得的整体跟踪控制器组合的正位置反馈(PPF)控制器用作展示所提出的技术的功效的候选者。 由此产生的分数级PPF阻尼和整体跟踪控制器导致闭环系统的总定位带宽增加37%; 并随后提高定位精度,同时跟踪高频三角形轨迹。

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