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Design of a fuzzy PID controller for a MEMS tunable capacitor for noise reduction in a voltage reference source

Ranjbar, Ehsan and Menhaj, Mohammad Bagher and Suratgar, Amir Abolfazl and Andreu-Perez, Javier and Prasad, Mukesh (2021) 'Design of a fuzzy PID controller for a MEMS tunable capacitor for noise reduction in a voltage reference source.' SN Applied Sciences, 3 (6). ISSN 2523-3971

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Abstract

This study presents a conventional Ziegler-Nichols (ZN) Proportional Integral Derivative (PID) controller, having reviewed the mathematical modeling of the Micro Electro Mechanical Systems (MEMS) Tunable Capacitors (TCs), and also proposes a fuzzy PID controller which demonstrates a better tracking performance in the presence of measurement noise, in comparison with conventional ZN-based PID controllers. Referring to importance and impact of this research, the proposed controller takes advantage of fuzzy control properties such as robustness against noise. TCs are responsible for regulating the reference voltage when integrated into Alternating Current (AC) Voltage Reference Sources (VRS). Capacitance regulation for tunable capacitors in VRS is carried out by modulating the distance of a movable plate. A successful modulation depends on maintaining the stability around the pull-in point. This distance regulation can be achieved by the proposed controller which guarantees the tracking performance of the movable plate in moving towards the pull-in point, and remaining in this critical position. The simulation results of the tracking performance and capacitance tuning are very promising, subjected to measurement noise

Item Type: Article
Uncontrolled Keywords: Fuzzy PID controller; MEMS; Noise reduction; Tunable capacitor; Voltage reference
Divisions: Faculty of Science and Health > Computer Science and Electronic Engineering, School of
Depositing User: Elements
Date Deposited: 19 May 2021 17:12
Last Modified: 19 May 2021 18:15
URI: http://repository.essex.ac.uk/id/eprint/30310

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