抑制低频横向振动的电动振动台参数优化

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振动与冲击 ›› 2022, Vol. 41 ›› Issue (9) : 159-166.

论文

抑制低频横向振动的电动振动台参数优化

左曙光，潘健，吴旭东，冯朝阳

作者信息 +

Parameter optimization of electric vibration table to suppress low frequency transverse vibration

ZUO Shuguang, PAN Jian, WU Xudong, FENG Zhaoyang

Author information +

文章历史 +

摘要

针对单轴电动振动台在被测件偏载工况下存在剧烈低频横向振动分量的问题，通过连接弹簧的参数优化对低频横向振动进行了抑制。首先建立了能够反映横向振动特性的电动振动台机电耦合模型，说明了横向振动产生机理，确定了参数优化的思路；其次，分析了电动振动台系统主要连接弹簧的参数对系统固有特性及横向振动的影响，为进行参数优化提供参考；最后，提出了面向车辆道路行驶工况的横向振动优化评价指标，利用带精英策略的快速非支配排序遗传算法对主要影响参数进行了优化，显著降低了目标频段内电动振动台的横向振动量级。提出的电动振动台参数优化方法能够有效抑制其低频横向振动，并为电动振动台连接弹簧的设计与选型提供参考。

Abstract

Aiming at the severe additional low-frequency lateral vibration under offset loading conditions for the vertical single-axis electrodynamic shaker, the lateral vibration is suppressed with the connecting springs’ parameter optimization. Firstly, an electrodynamic shaker’s electromechanical coupling model considering the lateral vibration was established. The lateral vibration mechanism was analyzed and the parameter optimization method was determined. Secondly, the influences of the main connecting springs’ parameters on the lateral vibration were analyzed as the reference for the parameter optimization. Finally, the lateral vibration optimization indexes for vehicle’s driving conditions were proposed. The main parameters were optimized using the fast non-dominated sorting genetic algorithm with the elite strategy. The results show that the proposed parameter optimization method can effectively suppress the electrodynamic shaker’s low-frequency lateral vibration and provide a reference for the connecting springs’ selection.

导出引用

左曙光，潘健，吴旭东，冯朝阳. 抑制低频横向振动的电动振动台参数优化[J]. 振动与冲击, 2022, 41(9): 159-166

ZUO Shuguang, PAN Jian, WU Xudong, FENG Zhaoyang. Parameter optimization of electric vibration table to suppress low frequency transverse vibration[J]. Journal of Vibration and Shock, 2022, 41(9): 159-166

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