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Magnetic-structural coupling simulation method for quartz flexible accelerometer based on finite elements

A technology of accelerometer and simulation method, applied in the field of finite element simulation, to reduce modeling workload, facilitate debugging, and avoid human errors

Inactive Publication Date: 2011-04-20
BEIHANG UNIV
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

Through the novelty search of existing technologies, there is no research on the overall modeling and magnetic structure coupling simulation of quartz flexible accelerometers at home and abroad

Method used

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  • Magnetic-structural coupling simulation method for quartz flexible accelerometer based on finite elements
  • Magnetic-structural coupling simulation method for quartz flexible accelerometer based on finite elements
  • Magnetic-structural coupling simulation method for quartz flexible accelerometer based on finite elements

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Embodiment Construction

[0048] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0049] The following examples are as follows figure 1 The implementation of the flow shown mainly includes selecting finite element elements, establishing a material model library, establishing a geometric model, establishing a finite element model, applying constraints and loads, and transient magnetic structure coupling simulation. The structure of the accelerometer is as follows figure 2 As shown, it is mainly composed of soft magnets (1), soft magnets (6) and pendulum components, and the pendulum components are composed of torquer coils (2), flexible flat bridges (3), support rings (4) and pendulum pieces (5 ), wherein the magnetic steel (7) is inside the soft magnet, and the torquer coil (2) constitutes the torquer assembly. Specific steps are as follows:

[0050] Step 1: Select the finite element element. Using ANSYS software, the f...

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Abstract

The invention discloses a magnetic-structural coupling simulation method for a quartz flexible accelerometer based on finite elements, which comprises the following steps: 1,selecting finite element units; 2, building a material model library, which comprises the actions of defining a unit system and inputting the material attribute of each component of the accelerometer; 3, establishing a geometrical model of the accelerometer, which comprises structure simplification and ellipsis, concatenation simplification, geometrical model establishment and attribute assignment; 4, establishing a finite element model of the accelerometer; 5, exerting constraints and loads which comprise magnetic field constraints, structural constraints, constant temperature loads, current density loads and acceleration loads; and 6, carrying out transient magnetic structure coupling simulation on the accelerometer. The method disclosed by the invention has the advantages that both the material nonlinear variation of each component of the accelerometer and the magnetic-structural coupling function are taken into consideration, therefore, on one hand, the optimal design can be performed on the structure of the accelerometer; and on the other hand, the variation model of performance parameters can be established based on the simulation results, and the design cycle and design cost of the quartz flexible accelerometer can be reduced.

Description

technical field [0001] The invention provides a finite element-based magnetic structure coupling simulation method for a quartz flexible accelerometer, in particular to a finite element-based magnetic structure coupling simulation method for a quartz flexible accelerometer, which belongs to the technical field of finite element simulation. Background technique [0002] An accelerometer is a sensor device that converts the acceleration of a carrier into an electrical signal through various measurement methods. Since the first accelerometer appeared at the end of the Second World War, with the development of science and technology, the accelerometer has also been continuously developed and improved. There have been nearly a hundred different types of accelerometers. Among them, quartz flexible accelerometers have been widely used in many fields such as aerospace and transportation due to their small size, fast response, and high sensitivity. They are even more popular in milit...

Claims

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F17/5036G06F17/5018G06F30/23G06F30/367
Inventor 陈云霞邓沣鹂王前程许丹康锐
Owner BEIHANG UNIV
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