Resonant gyroscope optimization method and system based on joint simulation

A resonant gyroscope and co-simulation technology, applied in the field of simulation model parameter optimization, can solve problems such as single variable, weak optimization ability, and poor effect, so as to improve simulation efficiency and accuracy and realize rapid optimization

Active Publication Date: 2021-08-24
SHANGHAI JIAO TONG UNIV
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

ANSYS, COMSOL, ABUQUS and other software have unique advantages in finite element simulation of resonant gyro and multi-physics field coupling simulation. They have the advantages of strong computing power, fast computing speed, and accurate results. The state shape cannot be automatically identified and needs manual intervention.
MATLAB has powerful data analysis and numerical calculation capabilities, and can implement more complex image recognition algorithms and optimization algorithms, but the effect is poor in finite element calculations

Method used

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  • Resonant gyroscope optimization method and system based on joint simulation
  • Resonant gyroscope optimization method and system based on joint simulation
  • Resonant gyroscope optimization method and system based on joint simulation

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Embodiment 1

[0070] According to the resonant gyroscope optimization method based on co-simulation provided by the present invention, comprising: Step 1: Utilize MATLAB to write the image recognition algorithm for resonant gyroscope eigenmode recognition and the optimization algorithm for resonant gyroscope structure parameter optimization; Step 2: use COMSOL establishes a resonant gyro parametric calculation model, and outputs finite element calculation results; Step 3: Use the data interface of MATLAB and COMSOL to establish a channel for mutual data transmission, realize the call of COMSOL finite element model by MATLAB, and use the image recognition algorithm and optimization The algorithm realizes the optimization of the structural parameters of the resonant gyroscope; the image recognition algorithm analyzes and recognizes the image by extracting image features including color features, texture features, shape features and local feature points, thereby obtaining the modal information i...

Embodiment 2

[0091] Embodiment 2 is a preferred example of Embodiment 1.

[0092] refer to figure 1 The present invention relates to a resonant gyro optimization design method based on joint simulation of MATLAB and COMSOL, including two parts: MATLAB image recognition algorithm and optimization algorithm and COMSOL finite element calculation.

[0093] refer to figure 2 , COMSOLWith MATLAB is a bridge to realize the data transfer between MTALAB and COMSOL. MATLAB uses the optimization algorithm to generate m optimization variables according to the calculated fitness value. The size of m is determined by the number of resonant gyro structure parameter variables. Pass the optimization variables to COMSOL, COMSOL rebuilds the finite element model according to the optimization variables, and calculates the quality factor, frequency difference, and eigenfrequency of n eigenmodes, and the size of n is determined by the resonant gyroscope’s working mode. MATLAB uses the image recognition algor...

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Abstract

The invention provides a resonant gyroscope optimization method and system based on joint simulation. The resonant gyroscope optimization method comprises the following steps: 1, writing an image recognition algorithm for resonant gyroscope characteristic modal recognition and an optimization algorithm for resonant gyroscope structure parameter optimization by utilizing MATLAB; 2, establishing a resonant gyroscope parameterization calculation model by using COMSOL, and outputting a finite element calculation result; and 3, establishing a channel for mutually transmitting data by utilizing data interfaces of the MATLAB and the COMSOL, calling the finite element model of the COMSOL by the MATLAB, and optimizing the structural parameters of the resonant gyroscope through an image recognition algorithm and an optimization algorithm. According to the method, automatic identification of the characteristic modal shape in finite element simulation of the resonant gyroscope is realized, synchronous and rapid optimization of multiple parameters of the resonant gyroscope structure is realized, the design accuracy of the resonant gyroscope can be effectively improved, and the design efficiency of the resonant gyroscope is improved.

Description

technical field [0001] The invention relates to the technical field of simulation model parameter optimization, in particular to a resonant gyro optimization method and system based on joint simulation. In particular, it relates to a resonant gyro optimization method based on joint simulation of MATLAB and COMSOL. Background technique [0002] Gyroscope is an inertial device that can be sensitive to the angle or angular velocity of the carrier, and it plays a very important role in the fields of attitude control, navigation and positioning. With the development of national defense technology and aviation and aerospace industries, the requirements of inertial navigation systems for gyroscopes are also developing in the direction of low cost, small size, high precision, multi-axis detection, high reliability, and adaptability to various harsh environments. The structural characteristics of the gyro resonator will directly affect the performance index of the gyroscope, and a h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/17G06F30/23G06F30/25G06F30/27G06K9/46G06K9/62G06N3/00G06N3/12G06F111/04
CPCG06F30/17G06F30/23G06F30/25G06F30/27G06N3/006G06N3/126G06F2111/04G06V10/40G06F18/24G06F18/214Y02T10/40
Inventor 张卫平谷留涛
Owner SHANGHAI JIAO TONG UNIV
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