A piezoelectric steering engine of bistable includes a base, four torsion units respectively fixed on the base, and four stiffness devices respectively located at a free end of the four torsion units. The four torsion units share the same structure, and are sequentially arranged at an interval of 90° in a same plane. The four stiffness devices share the same structure and are all connected to rudder blades. Every torsion unit includes a cantilever beam, a first macro-fiber composite actuator and a second macro-fiber composite actuator both of which are respectively attached to two opposite surfaces of the cantilever beam. A first stiffness device includes an elastic ring and a bearing pad mounted inside the elastic ring. After the cantilever beam passes through the bearing pad, a torque is exerted on the cantilever beam by the elastic ring through the bearing pad, resulting in the buckling of the cantilever beam.


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    Title :

    Piezoelectric steering engine of bistable and control method thereof


    Contributors:
    XU MINGLONG (author) / JING ZIJIAN (author)

    Publication date :

    2019-10-24


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    H10N / B64C AEROPLANES , Flugzeuge



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