The invention discloses a pre-pressure controllable piezoelectric bimorph deformation wing based on flexible hinge parallel connection and a method. The deformable wing mainly comprises four layers of piezoelectric composite material bimorphs with one ends fixed to the front edge, the four layers of bimorphs are short on the two sides and long in the middle, and the four layers of bimorphs are connected in parallel through four interlayer connecting wing rib structures. Extending shafts are arranged at the positions, corresponding to rotating shafts on the two sides of the piezoelectric composite bimorph on the uppermost layer and the piezoelectric composite bimorph on the lowermost layer, of the third set of interlayer connecting wing rib structures, bearings and prefabricated clamping groove bearing sleeves are arranged on the extending shafts in a sleeving mode, and polymer spiral winding type actuators with one ends fixed to the front edge are arranged on the bearing sleeves in a sleeving mode so as to load and unload axial pressure; one layer of the middle two layers of longer bimorph is fixedly connected with the trailing edge, and the other layer of the middle two layers of longer bimorph can slide in the trailing edge prefabricated groove; and finally, sequentially fixing the upper and lower skins with the upper and lower sides of the front edge large end, the four groups of wing ribs and the upper and lower sides of the rear edge large end. The output power of the pre-compressed piezoelectric bimorph deformation wing can be greatly improved, and the service life of the pre-compressed piezoelectric bimorph deformation wing is prolonged.

    本发明公开一种基于柔性铰链并联的预压力可控压电双晶片变形翼及方法。该变形翼主要包括四层一端固定于前缘的压电复合材料双晶片,四层双晶片两侧短中间长,通过四个层间连接翼肋结构并联;第三组层间连接翼肋结构在对应于最上和最下层压电复合材料双晶片的两侧转轴位置处均设有伸出轴,在伸出轴上均套有轴承和预制卡槽轴承套,在轴承套上均套有一端固定于前缘的聚合物螺旋卷绕型作动器,来加载和卸载轴向压力;中间两层较长双晶片中的一层与后缘固联,另一层可在尾缘预制槽中滑动;最后将上下蒙皮依次与前缘大端上下侧、四组翼肋及后缘大端上下侧固定。本发明可大幅提高预压缩压电双晶片变形翼的输出功率,并提高其工作寿命。


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    Title :

    Prepressure controllable piezoelectric bimorph deformation wing based on flexible hinge parallel connection and method


    Additional title:

    基于柔性铰链并联的预压力可控压电双晶片变形翼及方法


    Contributors:
    HU KAIMING (author) / LU HUANHUAN (author)

    Publication date :

    2023-11-24


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B64C AEROPLANES , Flugzeuge



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