综合大质量偏心与弹簧横向刚度超静主动隔振平台动力学解耦控制研究

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振动与冲击 ›› 2023, Vol. 42 ›› Issue (1) : 1-9.

论文

杨鸿杰1,2，代锋3，刘磊1,2，李新国1,2

作者信息 +

Dynamic decoupling control of super static active vibration isolation platform with large mass eccentricity and spring lateral stiffness

YANG Hongjie1,2, DAI Feng3, LIU Lei1,2, LI Xinguo1,2

Author information +

文章历史 +

摘要

针对载荷大质量偏心和弹簧横向刚度诱发超静主动隔振平台多自由度动力学耦合问题，研究隔振平台动力学耦合特性和解耦隔振控制方法。首先，综合载荷质量偏心和弹簧横向刚度的影响建立主动隔振平台多自由度耦合动力学模型。随后，根据所建立的模型分析动力学耦合下主动隔振平台的扰动传递特性，推导耦合谐振频率与弹簧刚度、载荷质量偏心之间的解析关系。最后，给出模态空间下隔振平台动力学解耦控制方法，开发基于音圈电机的主动隔振实验平台，通过实验验证动力学模型的准确性和模态解耦隔振控制方法的有效性。

Abstract

Aiming at the multi-degree-of-freedom dynamic coupling problem of the ultra-quiet active vibration isolation platform induced by the eccentricity of isolated payload and the transverse stiffness of spring, the dynamic coupling characteristics of the vibration isolation platform and the decoupling vibration isolation control method are studied. Integrating the influence of the payload mass eccentricity and the spring transverse stiffness, a coupled dynamic model of the ultra-quiet active vibration isolation platform is first established. Subsequently, according to the established dynamic model, the dynamic coupling characteristics of the vibration isolation platform are analyzed, and the analytical relationship among coupling resonance frequency, spring transverse stiffness, and payload mass eccentricity is given. Finally, a decoupling vibration isolation control method based on modal space is presented, and an active vibration isolation platform based on voice coil motors is developed. The accuracy of the established dynamic model and the effectiveness of the modal decoupling vibration isolation control method are verified through experiments.

导出引用

杨鸿杰1,2，代锋3，刘磊1,2，李新国1,2. 综合大质量偏心与弹簧横向刚度超静主动隔振平台动力学解耦控制研究[J]. 振动与冲击, 2023, 42(1): 1-9

YANG Hongjie1,2, DAI Feng3, LIU Lei1,2, LI Xinguo1,2. Dynamic decoupling control of super static active vibration isolation platform with large mass eccentricity and spring lateral stiffness[J]. Journal of Vibration and Shock, 2023, 42(1): 1-9

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