轮式并联调姿机器人冗余控制策略研究
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国家自然科学基金项目(U2037202、52075466)


Investigation on Wheeled Parallel Pose-tuning Robot Redundant Control Strategy
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    摘要:

    针对大型精密复杂零部件的集成装配,提出一种将全域全向运动与调姿微运动融合于一体的轮式并联调姿机器人。通过共享部分自由度方式将全向运动特征融合于并联机构,解决大范围任意方向移动与小空间内精密调姿高效连续操作的问题;针对轮式并联调姿装备的定平台开放特性与冗余特征,设计基于力位混合的单分支与整体冗余控制策略,选取并优化轮式并联调姿机构的主动输入方式,基于螺旋理论对位置控制轴的选取合理性进行分析,评估2种控制方式在不同的末端姿态域内的性能,得到设备在不同目标姿态时力位混合控制主动输入选取策略。基于ADAMS与Simulink软件搭建环境一致性良好,可控制较强的机电一体化模型,验证轮式并联调姿装备采用力位混合控制策略可行性与设备调姿精度。工程样机实验结果验证了所提出的冗余控制策略能够实现轮式并联调姿机器人功能,保证了调姿精度,为开发具有高可靠性、大尺度、重载荷、高精度同时兼具高精度全向运动和精密调姿功能的高效连续作业特征的6自由度并联调姿、对位、装配智能机器人奠定了理论与实践基础。

    Abstract:

    For the integrated assembly of large precision and complex parts, a wheeled parallel gesturing robot that integrated omnidirectional motion and gesturing micro-motion was proposed. The omnidirectional motion features were integrated into the parallel mechanism by sharing some degrees of freedom, which solved the problems of large range of arbitrary directional movement and efficient continuous operation of precision posture in small space. Based on the spiral theory, the reasonableness of the position control axis selection was analyzed, and the performance of the two control methods in different end attitude domains was evaluated to obtain the force-position hybrid control active input selection strategy for different target attitudes of the device. Based on ADAMS and Simulink software, a mechatronic model with good environmental consistency and strong control can be built to verify the feasibility and accuracy of wheeled parallel attitude adjustment equipment by using force-position hybrid control strategy. The experimental results of the engineering prototype verified that the proposed redundant control strategy can realize the functions of wheeled parallel posture robot and ensure the posture accuracy, and laid the theoretical and practical foundation for the development of a 6-degree of freedom parallel posture, alignment and assembly intelligent robot with high reliability, large scale, heavy load, high accuracy, and high precision omnidirectional motion and precision posture functions.

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刘毅,丰宗强,刘洋,常嘉琦,赵永生,姚建涛.轮式并联调姿机器人冗余控制策略研究[J].农业机械学报,2022,53(10):423-435. LIU Yi, FENG Zongqiang, LIU Yang, CHANG Jiaqi, ZHAO Yongsheng, YAO Jiantao. Investigation on Wheeled Parallel Pose-tuning Robot Redundant Control Strategy[J]. Transactions of the Chinese Society for Agricultural Machinery,2022,53(10):423-435.

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  • 收稿日期:2022-05-31
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  • 在线发布日期: 2022-08-09
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