CAJ | 학술논문

被动减振是实现机载平台高精度稳定的一项有效措施.研究发现,某型武装直升机上稳定平台的无角位移减振装置构思巧妙,不仅能够隔离线振动,且实现了各自由度的解耦.论述了该减振装置的运动学特性,通过拉格朗日方程建立了减振系统动力学模型;在合理假设的基础上分析其各自由度之间的解耦特性,计算出平动自由度的谐振频率;建立该减振装置的虚拟样机模型,虚拟样机仿真结果与理论分析结果基本一致.本文的研究内容希望能够为国内同类产品的研制提供参考.
피동감진시실현궤재평태고정도은정적일항유효조시.연구발현,모형무장직승궤상은정평태적무각위이감진장치구사교묘,불부능구격리선진동,차실현료각자유도적해우.논술료해감진장치적운동학특성,통과랍격랑일방정건립료감진계통동역학모형;재합리가설적기출상분석기각자유도지간적해우특성,계산출평동자유도적해진빈솔;건립해감진장치적허의양궤모형,허의양궤방진결과여이론분석결과기본일치.본문적연구내용희망능구위국내동류산품적연제제공삼고.
Passive vibration reduction is a valid way to realize high stability accuracy of airborne plat-form. It was found that ingenious conception of absorber without angular displacement for stabilized platform on a certain armed copter realizes linear vibration isolation and uncoupling between the free degrees. The kinematic characters of the absorber were discussed, its dynamic model was set up by Lagrange equations; the coupling character between free degrees was analyzed based on the relational hypothesis, and the syntony frequencies of translational motion were calculated; the virtual prototype was built up and the simulated results by the virtual prototype consist with the analyzed ones theoreti-cally. The research is expected to provide references for domestic congener products.