New compound fractional sliding mode control and super-twisting control of a MEMS gyroscope

TL;DR

This paper introduces a novel fractional order sliding mode controller combined with super-twisting control for MEMS gyroscopes, enhancing robustness and eliminating chattering through a new sliding surface design.

Contribution

It proposes a new compound fractional sliding mode control method with a novel sliding surface, improving robustness and eliminating chattering in MEMS gyroscope control.

Findings

Enhanced robustness against external perturbations

Chattering phenomenon effectively eliminated

Simulation results confirm improved control performance

Abstract

In this research we propose a new compound Fractional Order Sliding Mode Controller (FOSMC) and SuperTwisting Controller (FOSMC+STC) to control of a MEMS gyroscope. A new sliding mode surface has been defined to design the proposed new sliding mode controller. The main advantages of a FOSMC is its high tracking performance and robustness against external perturbation, but it is susceptible to chattering. By augmenting a STC with a FOSMC, the chattering phenomenon is eliminated, singularity problem is solved and systems robustness has significatnetly improved. Simulation results validate the effectiveness of the proposed control approach.