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Updated: Oct 10, 2025

Real-Time DC-dynamic Biasing Method for Switching Time Improvement in Severely Underdamped Fringing-field Electrostatic MEMS Actuators
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A Quick Start Method for MEMS Disk Resonant Gyroscope.

Xiaodong Xu1,2, Xiaowei Liu1,2,3, Yufeng Zhang1,2

  • 1MEMS Centre, Harbin Institute of Technology, Harbin 150000, China.

Sensors (Basel, Switzerland)
|December 10, 2021
PubMed
Summary
This summary is machine-generated.

This study introduces a novel control system for disk MEMS resonant gyroscopes, significantly reducing start-up time. The system achieves over 80% faster operation by optimizing frequency locking and step response.

Keywords:
disk resonator gyroscopephase locked loop (PLL)quick start

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Area of Science:

  • * Mechanical Engineering
  • * Electrical Engineering
  • * Sensor Technology

Background:

  • * High-precision disk resonator gyroscopes require high quality factors for improved performance.
  • * A high quality factor traditionally leads to a prolonged start-up time, hindering practical application.
  • * Existing control systems for Micro-Electro-Mechanical Systems (MEMS) resonant gyroscopes face challenges in balancing performance and response speed.

Purpose of the Study:

  • * To design and implement a control system for the driving loop of a disk MEMS resonant gyroscope that enables quick start-up.
  • * To enhance the gyroscope's performance by incorporating functions for rapid frequency locking and fast step response.
  • * To address the trade-off between high quality factor and start-up time in resonant gyroscopes.

Main Methods:

  • * Development of a coarse-precision mode transition system for achieving quick frequency locking.
  • * Implementation of a large-small mode transition system to ensure fast step response.
  • * Verification of the control system design through rigorous circuit testing.

Main Results:

  • * The designed control system successfully integrates quick frequency locking and fast step response capabilities.
  • * Circuit tests confirmed the operational correctness and effectiveness of the proposed control system.
  • * The start-up time of the disk MEMS resonant gyroscope was reduced by over 80% compared to traditional control loops.

Conclusions:

  • * The novel control system effectively overcomes the long start-up time limitation associated with high-quality factor disk MEMS resonant gyroscopes.
  • * The system's ability to achieve quick frequency locking and fast step response significantly improves operational efficiency.
  • * This advancement offers a practical solution for enhancing the usability and performance of high-precision resonant gyroscopes in various applications.