A quasi-zero stiffness vibration isolation and pointing integrated platform comprises a base platform, a working platform and a plurality of supporting leg mechanisms which are arranged between the base platform and the working platform and have the quasi-zero stiffness characteristic, and one end of each supporting leg mechanism is connected with the base platform through a two-shaft flexible hinge. And the other end of the supporting leg mechanism is connected with the working platform through a three-axis flexible hinge, so that spatial six-degree-of-freedom broadband vibration isolation and pointing control are realized. A passive quasi-zero stiffness structure and an active quasi-zero stiffness structure are designed by compensating a negative stiffness structure with a linear and nonlinear positive stiffness structure, and the passive quasi-zero stiffness structure and the active quasi-zero stiffness structure are compounded to form the quasi-zero stiffness supporting leg which can bear a large load. Ideal balance position adjustment of the passive quasi-zero stiffness structure can be realized by translating the negative stiffness structure of the passive quasi-zero stiffness structure, and ideal balance position adjustment of the active quasi-zero stiffness structure can be realized by translating the nonlinear positive stiffness structure of the active quasi-zero stiffness structure and adjusting the magnitude of energizing current, so that the length of the supporting leg is adjustable; the pointing function is realized.

    一种准零刚度隔振与指向一体化平台,包括:底座平台、工作平台以及若干设置于两者之间的具有准零刚度特性的支腿机构,支腿机构的一端与底座平台之间通过两轴柔性铰链相连,支腿机构的另一端与工作平台通过三轴柔性铰链相连从而实现空间六自由度宽频带振动隔离和指向控制。本发明利用线性和非线性正刚度结构补偿负刚度结构设计了无源准零刚度结构和有源准零刚度结构,将无源准零刚度结构与有源准零刚度结构进行复合形成了准零刚度支腿,可承受大负载,并可通过平移无源准零刚度结构的负刚度结构实现无源准零刚度结构的理想平衡位置调节,平移有源准零刚度结构的非线性正刚度结构、调节通电电流大小实现有源准零刚度结构的理想平衡位置调节,从而使支腿长度可调,具有指向功能。


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    Title :

    Quasi-zero stiffness vibration isolation and pointing integrated platform


    Additional title:

    准零刚度隔振与指向一体化平台


    Contributors:
    LU JIAJIA (author) / ZHANG WENMING (author) / YAN GE (author) / QI WENHAO (author) / YAN HAN (author) / SHI JUNWEI (author)

    Publication date :

    2023-08-11


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B64G Raumfahrt , COSMONAUTICS



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