Active disturbance rejection vibration control for an all-clamped piezoelectric plate with delay

Li Shengquan*, Zhu Chaowei, Mao Qibo, Su Jinya, S Li Juan

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

21 Citations (Scopus)

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 feedforward 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 setup 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.

Original languageEnglish
Article number104719
Number of pages11
JournalControl engineering practice
Volume108
Early online date5 Jan 2021
DOIs
Publication statusPublished - 1 Mar 2021

Keywords

  • All-clamped piezoelectric plate
  • Linear active disturbance rejection control (LADRC)
  • Extended state observer (ESO)
  • Active vibration suppression
  • System delay

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