基于正交多项式法的动力吸振器安装点的等效质量识别

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振动与冲击 ›› 2014, Vol. 33 ›› Issue (24) : 211-214.

论文

基于正交多项式法的动力吸振器安装点的等效质量识别

何山1，杨志坚1,2，丁康1，吴钦杰1

作者信息 +

Estimating Equivalent Mass of Dynamic Vibration Absorber Mounting Point Based on the method of Orthogonal Polynomials

HE Shan1，YANG Zhi jian1,2，DING Kang1， WU Qing jie1

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文章历史 +

摘要

在动力吸振器的设计过程中，为方便匹配和寻找动力吸振器的最优参数，需要识别主系统在安装点的等效质量来将其简化为单自由度系统。针对传统质量感应法操作复杂、识别精度低的缺点，采用正交多项式法来识别主系统的等效质量，通过仿真与实验相结合验证对比正交多项式法和质量感应法的识别结果。结果表明正交多项式法相对于质量感应法识别精度高，实验结果和仿真结果较好的吻合，且通过实验验证利用正交多项式法匹配的动力吸振器有较优的吸振效果，基本符合不动点理论的最优条件。

Abstract

For the convenience of matching the optimal parameters of dynamic vibration absorber, the main system need to be simplified to single degree of freedom system by estimated its equivalent mass of mounting point. As the traditional mass response method have the shortcomings of complex operation and low accuracy, this paper use orthogonal polynomials to estimate the equivalent mass. Then contrast the results of orthogonal polynomial method and mass response method by the simulation combined with experiment. Results show that the orthogonal polynomial method identification precision is high and the experimental results is close to the simulation results. In addition, through experiment proved using the method of orthogonal polynomial matching with dynamic vibration absorber has a better effect, which coincidence with the optimal conditions of fixed point theory.

导出引用

何山;杨志坚;丁康;吴钦杰. 基于正交多项式法的动力吸振器安装点的等效质量识别[J]. 振动与冲击, 2014, 33(24): 211-214

HE Shan;YANG Zhi jian;DING Kang;WU Qing jie. Estimating Equivalent Mass of Dynamic Vibration Absorber Mounting Point Based on the method of Orthogonal Polynomials[J]. Journal of Vibration and Shock, 2014, 33(24): 211-214