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Piezoelectric active and passive mixed vibration suppression method for automobile body structure

A car body, active and passive technology, applied in the direction of electric vehicles, vehicle parts, electric traction, etc., can solve the problems of insignificant vibration suppression effect and poor robustness, and achieve excellent vibration suppression effect, strong robustness, and small additional quality effect

Inactive Publication Date: 2013-04-17
JILIN UNIV
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AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to propose a novel active-passive hybrid vibration suppression method applied in the field of automobile body vibration control to solve the problems of poor robustness of pure active control and insignificant effect of pure passive control on vibration suppression.

Method used

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  • Piezoelectric active and passive mixed vibration suppression method for automobile body structure
  • Piezoelectric active and passive mixed vibration suppression method for automobile body structure
  • Piezoelectric active and passive mixed vibration suppression method for automobile body structure

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Embodiment Construction

[0018] refer to figure 1 , the piezoelectric element 3 is attached to the surface of the body structure 1 (usually the inner surface), and the data acquisition / output (I / O) port of the hybrid controller 2 is connected to the piezoelectric element 3 to form a piezoelectric active-passive hybrid vibration suppression system for the body structure .

[0019] Its working principle is: the piezoelectric element 3 is distributed in various areas on the surface of the thin-walled structure of the automobile body according to the position optimized by calculation, and the piezoelectric element 3 feeds back the vibration characteristic signal of the vehicle body structure 1, through the algorithm built in the hybrid controller 2 and The hardware circuit drives the piezoelectric element to realize the vibration control of the vehicle body. The hybrid vibration suppression algorithm preset in the hybrid controller 2 is aimed at the vibration characteristics of different working conditio...

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Abstract

The invention relates to a piezoelectric active and passive mixed vibration suppression method for an automobile body structure and belongs to a structure vibration control method. Direct and inverse piezoelectric effects of piezoelectric materials are used, vibration of wallboards of the automobile body is sensed and controlled through one or more piezoelectric elements distributed on surfaces of the wallboards of the automobile body, and the active and passive mixed control on the vibration of the automobile structure is achieved through combining a control algorithm. According to the method, advantages of small added mass, wide bands and good controllability of the active vibration technology and good reliability, stability and robustness and little energy consumption of the passive damping control technology are comprehensively used, and the effective suppression of the vibration of the automobile body structure is achieved with small system added mass and little energy input.

Description

technical field [0001] The invention relates to a vibration suppression method for an automobile body structure, in particular to an active and passive hybrid vibration suppression method for combining active vibration suppression and passive vibration suppression for the automobile body structure by utilizing the positive and negative piezoelectric effects of piezoelectric materials. Background technique [0002] Energy and the environment are becoming two decisive factors affecting the development of the world's automobile industry. Improving the level of energy conservation and environmental protection of automobiles is an important issue faced by major automobile manufacturers at home and abroad. Car lightweight is the most direct way to reduce fuel consumption and achieve energy saving and environmental protection. However, the problem brought by lightweight is that the body materials are insufficient, resulting in reduced body rigidity and deterioration of the noise env...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L11/00B60K25/10
Inventor 沈传亮韩也宋学伟王大学安孝文朱宁欣姚浩峰
Owner JILIN UNIV
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