Aiming at the problem that the traditional UVA stabilized platform had higher load and poor structural stability which was difficult to obtain aerial image information with high stability at low altitude,the principle of attitude compensation and displacement regulation on sta-bilized platform system was expounded,the selection of the material,the design and assembly of the main structure,the loading position and loading application of the stabilized platform were studied. A small three axis symmetrical stabilized platform for Multi-rotor UAV was de-signed,which had considered the lightweight,easy to assemble and good workability in the goal orientation. Meanwhile,the static and modal analysis of the stabilized platform model was carried out by using the finite element analysis software—ANSYS Workbench,and also the cor-responding simulation data were extracted. The results indicate that this design has good function and reliability in strength, stiffness and damping capacity,which can make sure the camera will compensate for the displacement and vibration in aerial photography and realize the function of image stabilization.%针对传统无人机稳定云台应用于无人机时重量较大、结构稳定性不佳而难以在低空航拍下获取较高稳定性图像信息的问题,对云台姿态补偿与位移调节的原理进行了阐述,对云台结构材料的选择、主体结构的设计和装配、云台的承载位置和载荷的施加等方面进行了研究,以小巧、易装配及轻量化为目标导向,提出了一种以多旋翼无人机为搭载平台的小型三轴对称稳定云台的设计方案.利用ANSYS Workbench有限元分析软件对云台模型进行了静力学载荷校核和动力学模态分析,并提取出了相应的仿真数据.研究结果表明:该云台的设计在强度、刚度和减震能力上都具有较好的功能性和可靠性,确保了相机在航拍中对位移振动做出补偿,实现了稳像的功能.
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