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Active Disturbance Rejection Vibration Control for an All-clamped Piezoelectric Plate with Delay

Li, Shengquan and Zhu, Chaowei and Mao, Qibo and Su, Jinya and Li, Juan (2021) 'Active Disturbance Rejection Vibration Control for an All-clamped Piezoelectric Plate with Delay.' Control Engineering Practice. ISSN 0967-0661

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Abstract

All-clamped plate structures are usually subject to strong coupling, model uncertainties and system time-delay. To address these challenges, this work proposes a novel vibration control method based on a linear active disturbance rejection controller (LADRC) with time-delay compensation (TDC-LADRC). The mathematical model of the piezoelectric plate is first established based on system identification with an auxiliary variable method. Then ADRC is designed for the delay-free part by a smith predictor with a novel differentiator. An extended state observer (ESO) is drawn to estimate the internal and external disturbances, such as mode errors, higher harmonics and external environmental excitations. Then, real-time compensation is introduced via feed-forward mechanism to attenuate their adverse effects, so that optimal vibration suppression performance can be achieved by the proposed controller. Finally, based on NI-PCIe6343 acquisition card, an experimental set-up is designed to verify and compare the performance of the proposed TDC-LADRC against the traditional LADRC and the traditional predictor based LADRC (PLADRC). Comparative experimental results show that the proposed TDCLADRC possesses the best disturbance rejection and vibration suppression performance.

Item Type: Article
Uncontrolled Keywords: all-clamped piezoelectric plate, linear active disturbance rejection control, extended state observer, active vibration suppression, system delay
Divisions: Faculty of Science and Health > Computer Science and Electronic Engineering, School of
Depositing User: Elements
Date Deposited: 27 Nov 2020 17:13
Last Modified: 20 Jan 2021 17:15
URI: http://repository.essex.ac.uk/id/eprint/29172

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