中文摘要：

基于车辆六维扰动问的耦合运动特征，给出了车用稳定平台构型综合原则及方法，可实现机构少输入、动平台多轴稳定的目标。应用螺旋理论综合了一类具有耦合特征的三自由度并联机构，并提出了几种具有实际应用价值的新机型。以其中的一种构型为例，分析了机构的运动特性，并建立了其耦合运动约束方程，在此基础上提出了表征这种特性的耦合度评价指标，并给出了数值算例。文章基于车用稳定平台应用需求，将耦合型少自由度并联机构用于稳定平台多轴联动补偿，为稳定平台机型设计与分析提供了一种新思路。

英文摘要：

Based on the coupling characteristics of vehicle disturbed motions, the synthesis principle and method of vehicle-based stabilized platform are given to achieve the goal of using less drivers of mechanism to steady multi-axis motions of the moving platform. Based on the screw theory, a series of 3-DOF parallel mechanism with coupling characteristic are synthesized, and several practical new types of geometric configurations are presented. With the 3-SRR/SRU coupling parallel mechanism as an example, the motion characteristic of mechanism is analyzed, and the coupling motion constraint equations are established. Based on this, the evaluation index represented this coupling motion characteristic is proposed. And according to the requirement of vehicle-based stabilized platform, the coupling limited-DOF parallel mechanism is used for multi-axis compensation of the vehicle-based stabilized platform, which provides a new conception to design and analysis of mechanism for stabilized platform.