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3 results on '"capacitive micro-machined gyro"'

1. Adaptive Fuzzy Modal Matching of Capacitive Micromachined Gyro Electrostatic Controlling.

Author

Cheng, Li, Liu, Ruimin, Guo, Shumin, Zheng, Gaofeng, and Liu, Yifang

Subjects
*SIMULATION methods & models, *COMPUTER simulation
Abstract

A fuzzy PI controller was utilized to realize the modal matching between a driving and detecting model. A simulation model was built to study electrostatic decoupling controlling technology. The simulation results show that the modal matching can be gained by the fuzzy PI controller. The frequency difference between the driving mode and the detection mode is less than 1 Hz, and the offset of the input DC is smaller than 0.6 V. The optimal proportionality factor and integral coefficient are 1.5 and 20, respectively. The fuzzy PI controlling technology provides a good way for the parameter optimization to gain modal matching of micro gyro, via which the detecting accuracy and stability can be improved greatly. [ABSTRACT FROM AUTHOR]

Published
2023
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2. Adaptive Fuzzy Modal Matching of Capacitive Micromachined Gyro Electrostatic Controlling

Author

Li Cheng, Ruimin Liu, Shumin Guo, Gaofeng Zheng, and Yifang Liu

Subjects
capacitive micro-machined gyro, electrostatic control, modal matching, numerical simulation, feedback control, Chemical technology, TP1-1185
Abstract

A fuzzy PI controller was utilized to realize the modal matching between a driving and detecting model. A simulation model was built to study electrostatic decoupling controlling technology. The simulation results show that the modal matching can be gained by the fuzzy PI controller. The frequency difference between the driving mode and the detection mode is less than 1 Hz, and the offset of the input DC is smaller than 0.6 V. The optimal proportionality factor and integral coefficient are 1.5 and 20, respectively. The fuzzy PI controlling technology provides a good way for the parameter optimization to gain modal matching of micro gyro, via which the detecting accuracy and stability can be improved greatly.

Published
2023
Full Text
View/download PDF

3. Analysis on the Errors Caused by the Axial Acceleration of a Single Mass Capacitive Vibratory Micro-machined Gyro and Design of High-order Low-pass Filtering Module

Author

Hou Zhuo and Li Xun

Subjects
single mass, axial acceleration, capacitive micro-machined gyro, Physics::Space Physics, lcsh:Technology (General), low-pass filtering, lcsh:T1-995
Abstract

In order to estimate and get the flight attitude, trajectory, launching speed, ejection altitude, landing point, landing speed and displacement, etc. of aircraft, parameters of six degree of freedom inertial measurement unit are usually acquired to establish the settlement data base in the design and study of aircraft. Moreover, the gyro used to measure the angular rate is an important part of the six degree of freedom inertial measurement unit. Belonging to the category of dynamic measurement，the research in this paper, taking a single mass capacitive vibratory micro-machined gyro as the object and combining Coriolis principle with the measurement mechanism of capacitive micro-machined vibrating gyro, made an analysis on the measurement errors of angular rate of this kind of gyro caused by the axial acceleration. Meanwhile, a kind of anti-aliasing filtering module of signal preconditioning circuit of the gyro was designed in this paper by taking advantage of elliptic high-order low-pass filter, which was consonant with the frequency band range in the actual application of angular rate, and preferably restrained the errors caused by the axial acceleration of a single mass capacitive vibrating micro-machined gyro, and provided some important test data and recommendations for its engineering practice as well.

Published
2014

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