The Synthesis of a Stewart Platform for a Specific Workspace with a Genetic Algorithm

The synthesis problem of a 6-SPS Stewart platform with semi-regular hexagons is studied in this paper. We present a genetic algorithm approach to synthesize a Stewart platform whose workspace must include a desired workspace with orienting capabilities in a given 3D region. Based on the observation that the constant orientation workspace gets smaller as the given orientations increase, a simple method is presented to describe the workspace with orienting capabilities, which need only search the constant orientation workspaces with the eight sets of extremal orientations of given 3D region and use their common part.To verify the method, a numerical example is given. The GA is used to optimize architectural parameters and obtain a compact manipulator. The method is applied to synthesize a Stewart platform whose workspace must include a prescribed cylinder with orienting capabilities.

深海采矿系统多维运动补偿器的运动学设计

根据采矿船在海浪中的运动情况,确定了深海采矿系统多维运动补偿器要满足的运动学要求。提出了基于6-SPS结构Stewart平台的采矿系统多维运动补偿器的设计方案,确定了平台的结构尺寸。运用matlab绘制出了补偿器的工作空间图形,证明设计的尺寸满足运动学要求。

并联机器人机构综合的超混沌数学规划法

针对牛顿法、拟牛顿法求解非线性方程组只能求得一个解,且有时不能收敛的问题,将超混沌系统与数学规划相结合,应用超混沌系统产生迭代初始点,提出了应用超混沌映射的数学规划法求解非线性方程组全部实数解的方法。6-SPS并联机器人的机构综合实例表明,该方法收敛快,能够求出全部实数解,证明了方法的正确性与有效性。