Real time controller design to solve the "pull-in" instability of MEMS actuator

M. H. Nikpanah, Y. Wang, F. L. Lewis, A. Q. Liu

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

2 Citations (Scopus)

Abstract

The purpose of this paper is to improve the performance of MEMS parallel plate actuators and RF switches systems. Electrostatic micro actuators are normally driven by static open-loop voltage control schemes. A major problem in this control strategy is that at a distance of two-thirds of the zero-bias capacitive gap, the actuator position becomes unstable and collapses. This phenomenon is known as "snap-through" or "pull-in". In this paper a new closed-loop feedback control scheme using switching technique will be proposed to solve the problem above to provide the stable and controllable range to full gap and controlling movable plate through whole gap to achieve desired switching on-off time. The other issue to be considered is that the control strategy must be applicable for real time implementation.

Original languageEnglish
Title of host publication2008 10th International Conference on Control, Automation, Robotics and Vision, ICARCV 2008
Pages1724-1729
Number of pages6
DOIs
Publication statusPublished - Dec 2008
Externally publishedYes
Event2008 10th International Conference on Control, Automation, Robotics and Vision, ICARCV 2008 - Hanoi, Viet Nam
Duration: 17 Dec 200820 Dec 2008

Publication series

Name2008 10th International Conference on Control, Automation, Robotics and Vision, ICARCV 2008

Conference

Conference2008 10th International Conference on Control, Automation, Robotics and Vision, ICARCV 2008
Country/TerritoryViet Nam
CityHanoi
Period17/12/0820/12/08

Keywords

  • "pull-in" instability
  • Closed-loop feedback control
  • Equilibrium point
  • Full gap range
  • Microactuator

ASJC Scopus subject areas

  • Computer Vision and Pattern Recognition
  • Control and Systems Engineering
  • Electrical and Electronic Engineering

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