Adaptive Feedforward Control For Reset Feedback Control Systems -- Application in Precision Motion Control

TL;DR

This paper introduces an adaptive feedforward control method for reset feedback systems that enhances precision in reference tracking and disturbance rejection, validated through experimental results.

Contribution

It proposes a novel adaptive law for feedforward control in reset systems, ensuring convergence and improved tracking performance.

Findings

Enhanced reference tracking accuracy

Effective disturbance rejection

Validated through experimental results

Abstract

This paper presents a novel adaptive feedforward controller design for reset control systems. The combination of feedforward and reset feedback control promises high performance as the feedforward guarantees reference tracking, while the non-linear feedback element rejects disturbances. To overcome inevitable model mismatches, the feedforward controller adapts to increase precision in reference tracking. Where linear existing adaptive feedforward controllers do not guarantee convergence in the presence of reset, this work presents a novel adaptive law based on converging and diverging regions of adaptation to achieve good tracking. Experimental results demonstrate the claimed advantage of the novel method.