Analysis of sigma-delta micro-mechanical accelerometer's parameters

Lv Bingjun, Wang Pengfei, Li Zhi, Liu Xiaowei, Liu Yuntao

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Scopus citations

Abstract

Based on conventional 2nd-order and 4th-order closed-loop sigma-delta accelerometer (ΣΔ accelerometer) system models, an investigation into parameters that influence accelerometer's performance is presented, including lead compensation coefficient, mechanical resonant frequency and input signal. Moreover, effect of compensation coefficient under high Q is researched. The simulation results imply that an accelerometer system has an optimal compensation coefficient and its performance is inversely proportional to resonant frequency. And the system is conditionally stable under different input acceleration. By optimizing these parameters, a 4th-order sigma-delta accelerometer with 93dB SNDR can be achieved.

Original languageEnglish
Title of host publication2011 Academic International Symposium on Optoelectronics and Microelectronics Technology, AISOMT 2011
Pages267-271
Number of pages5
DOIs
StatePublished - 2011
Externally publishedYes
Event2011 Academic International Symposium on Optoelectronics and Microelectronics Technology, AISOMT 2011 - Harbin, China
Duration: 12 Oct 201116 Oct 2011

Publication series

Name2011 Academic International Symposium on Optoelectronics and Microelectronics Technology, AISOMT 2011

Conference

Conference2011 Academic International Symposium on Optoelectronics and Microelectronics Technology, AISOMT 2011
Country/TerritoryChina
CityHarbin
Period12/10/1116/10/11

Keywords

  • Compensation coefficient
  • Input signal
  • Micro-accelerometer
  • Resonant frequency
  • Sigma-delta

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