基于压电堆与橡胶的主被动一体化隔振器研究  

Active and Passive Integration of Vibration Isolator Based on Piezoelectric-Rubber

作　　者：李雨时[1] 周军[1] 钟鸣[2] 陈照波[2] 焦映厚[2] 

机构地区：[1]西北工业大学航天学院,西安720129 [2]哈尔滨工业大学机电工程学院,哈尔滨150001

出　　处：《振动．测试与诊断》2013年第4期571-577,721,共7页Journal of Vibration,Measurement & Diagnosis

基　　金：国家自然科学基金资助项目(11172075)

摘　　要：针对临近空间飞行器敏感设备的隔振要求,结合主动振动控制与被动控制方法,提出一种新型压电堆橡胶主被动一体化组合隔振器。对压电堆作动器和橡胶隔振器进行结构设计,建立主被动一体化隔振系统的动力学模型。采用前馈反馈复合控制对二级隔振系统进行主动控制算法设计,基于经典Stewart隔振平台,设计一种新型临近空间飞行器主被动一体化隔振平台。采用Matlab/Simulink联合仿真技术对各种激励信号进行数值仿真分析。仿真结果显示,所设计的隔振器在全频段能够有效隔离源自基础的位移激励,这表明所设计的隔振平台在理论上是有效和可行的,为进一步的实验研究奠定了基础。A novel piezoelectric-rubber active-passive integration combination vibration isolator is proposed to meet the vibration isolation requirement of near space vehicle sensitive instruments by combination of the active vibration control and passive control methods.The dynamics model of active and passive integration of vibration isolation system is established by structural design of piezoelectric stack actuator and the rubber isolation.The feed-forward and feed-back combination controls are employed to design the active control algorithm for the double-layer vibration isolation system.Combining the classic Stewart isolation platform,a novel near space vehicle active and passive integration isolation platform is designed.The numerical simulation analysis under various excitation signals has been done by Matla/Simulink co-simulation technology.From the numerical simulation,it shows that the displacement excitation from the ground in the whole frequency domain can be effectively isolated by the designed isolator,and the designed isolation platform is effective and feasible in theory,which lays the foundation for further experimental studies.

关 键 词：主被动一体化隔振 前馈反馈控制 压电堆 橡胶隔振器 Stewart隔振平台 

分 类 号：TH113.1[机械工程—机械设计及理论] O328[理学—一般力学与力学基础]