主动隔振作动器刚度放大与控制误差分析

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振动与冲击 ›› 2010, Vol. 29 ›› Issue (5) : 50-53.

论文

主动隔振作动器刚度放大与控制误差分析

张涛1,2, 黄宏彪1,2;王斌1,2;曾台英3;徐嘉1,2;刘芳1,2;赵芳芳1,2;朱健强1

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STIFFNESS OF ACTUATOR AMPLIFICATION AND ANALYSE OF GOVERNING ERROR IN ACTIVE VIBRATION ISOLATION

hang Tao1，2;Huang Hongbiao1;Wang Bin1，2;Zeng Taiying3;Xu Jia1，2;Liu Fang1，2;Zhao Fangfang1;Zhu Jianqiang1

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摘要

本文研究了主动隔振系统中作动器的刚度放大与控制误差问题。主动隔振系统中作动器的刚度应与其负载刚度相匹配，如果负载较大或者作动器刚度较小，可以利用作动器与小刚度弹簧串联的方式放大输出刚度。本文分析了控制器的输出误差均匀分布时主动隔振系统的隔振性能，分析表明，对作动器刚度放大时，需要同时提高控制器的相对精度与作动器的行程才能保证原有的隔振效果，作动器的输出刚度与控制器相对精度、作动器的输出行程两参数具有等效性与替代性。这为设计主动隔振系统时控制器与作动器在更广阔的范围内选择提供了依据。

Abstract

Stiffness of actuator amplification and governing error in active vibration isolation (AVI) are investigated. The stiffness of the actuator should match the stiffness of the external load，and it can be amplified by connecting the actuator with a small stiffness spring in series if the load is heavy or the stiffness of actuator is low. The performance of AVI is analyzed when the governing error is evenly distributed. The results shows that in order to obtain the same performance of vibration isolation, improving relative accuracy of controller and increasing stroke of actuator are both needed when stiffness of actuator is amplified, the stiffness of actuator is equivalent to and can be substituted by its stroke and relative accuracy of controller which provides us the accordance to select controller and actuator in even wider area on AVI design.

导出引用

张涛;黄宏彪;王斌;曾台英;徐嘉;刘芳;赵芳芳;朱健强. 主动隔振作动器刚度放大与控制误差分析[J]. 振动与冲击, 2010, 29(5): 50-53

hang Tao;Huang Hongbiao;Wang Bin;Zeng Taiying;Xu Jia;Liu Fang;Zhao Fangfang;Zhu Jianqiang. STIFFNESS OF ACTUATOR AMPLIFICATION AND ANALYSE OF GOVERNING ERROR IN ACTIVE VIBRATION ISOLATION[J]. Journal of Vibration and Shock, 2010, 29(5): 50-53