Nano Archive

Implementation of phase-locked loop control for MEMS scanning mirror using DSP

Wang, Chuanwei and Yu, Hung-Hsiu and Wu, Mingching and Fang, Weileun (2007) Implementation of phase-locked loop control for MEMS scanning mirror using DSP. Sensors and Actuators A: Physical, 133 (1). 243 - 249.

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Official URL: http://www.sciencedirect.com/science/article/B6THG...

Abstract

The present study has employed the phase-locked loop control method to ensure the operating of MEMS actuators at their resonant frequency. In this study, the control algorism was simulated by the MATLAB. Further, the digital signal processing (DSP) technique was adopted to implement the concept of phase-locked loop control algorithm. Thus, a wide VCO lock-in dynamic range was achieved. In applications, the optical scanners fabricated using the SOI wafer and MOSBE process were respectively employed to demonstrate the present technique. The test show that the resonant frequency was tracked for various driving voltages, loop gains, and initial frequency offsets. Thus, the variation of the scanning angle resulted from the offset of the resonant frequency of the devices can be prevented.

Item Type:Article
Uncontrolled Keywords:Phase-locked loop; Scanning mirror; Optical MEMS
Subjects:Analytical Science > Nanotechnology for sensing and actuating
Engineering > Nanotechnology applications in ICT
ID Code:4767
Deposited By:SPI
Deposited On:08 May 2009 09:55
Last Modified:08 May 2009 09:55

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