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平面冗余自由度机器人自寻优运动优化方法

DOI: 10.3969/j.issn.1006-7043.201309011

Keywords: 自寻优方法, 封闭解, 运动优化, 虚拟转矩, 关节限位, 冗余自由度机器人

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Abstract:

为了解决平面冗余自由度机器人的运动优化问题,提出一种自寻优方法.引入“臂角”参数,建立了平面4自由度机器人逆运动学的封闭解形式;针对机器人运动过程中远离关节极限的优化任务,提出一种自寻优方法,将4自由度机器人等效为四连杆机构,将优化目标转化为虚拟转矩作用于关节上,机器人将在虚拟力作用下向着平衡状态运动,最终实现机器人的运动优化.采用自寻优方法对机器人单点位姿及轨迹跟踪进行了运动仿真,结果表明:自寻优方法可以快速、有效地实现机器人的运动优化.

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