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  

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

作　　者：杨鸿杰 代锋[3] 刘磊[1,2] 李新国 YANG Hongjie;DAI Feng;LIU Lei;LI Xinguo(School of Astronautics,Northwestern Polytechnical University,Xi’an 710072,China;Shaanxi Provincial Key Lab of Aerospace Flight Vehicle Design,Northwestern Polytechnic University,Xi’an 710072,China;Xi’an Branch,China Academy of Space Technology,Xi’an 710000,China)

机构地区：[1]西北工业大学航天学院,西安710072 [2]陕西省空天飞行器设计重点实验室,西安710072 [3]中国空间技术研究院西安分院,西安710000

出　　处：《振动与冲击》2023年第1期1-9,共9页Journal of Vibration and Shock

基　　金：国家自然科学基金(52075446,51675430)。

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。Here,aiming at multi-DOF dynamic coupling problems of super static active vibration isolation platform induced by large mass eccentricity and spring lateral stiffness,dynamic coupling characteristics and decoupling control method of the platform were studied.Firstly,the multi-DOF coupled dynamic model of the platform was established based on effects of load mass eccentricity and spring lateral stiffness.Then,according to the established model,disturbance transfer characteristics of the platform under dynamic coupling were analyzed,and analytical relations among coupled resonance frequencies,spring stiffness and load mass eccentricity were derived.Finally,the dynamic decoupling control method of the platform in modal space was deduced,and the active vibration isolation experimental platform based on voice-coil motor was developed.The correctness of the dynamic model and the effectiveness of the modal decoupling vibration isolation control method were verified with experiments.

关 键 词：主动隔振 微振动 模态变换 动力学耦合 解耦控制 

分 类 号：TB535[理学—物理]