【作者】 葛黎黎；

【导师】 熊蔡华；

【作者基本信息】 华中科技大学 ， 机械电子工程， 2009， 硕士

【摘要】 由于社会节奏的加快,由各种因素引起的残疾越来越多。上肢康复医疗机器人作为非常重要的康复医疗装备对促进残疾人事业发展、改善残疾人状况将有巨大的作用。上肢康复医疗机器人的研究已成为全面建设小康社会和构建社会主义和谐社会的一项重要而紧迫的任务。本文对7自由度上肢康复医疗机器人的运动学及动力学进行了建模,并对其执行作业时的运动学和动力学特性进行了分析。通过对现代康复理论和康复训练方法的研究,本文明确了康复训练在患者康复中的作用。针对机器人各关节功能运动要求,开展了功能结构研究,从模块化的角度对7自由度上肢康复医疗机器人的机械结构、控制系统进行了阐述,明确了各部分的具体结构和功能需求,介绍了各元器件的选型。出于安全考虑本机器人的驱动方式采用气动肌肉柔性驱动,本文也对气动肌肉性能进行了一些研究,为气动人工肌肉在多关节康复机器人中的应用打下初步的基础。建立了7自由度上肢康复医疗机器人的运动学模型,计算出了末端手爪相对于基座的运动变换方程并验证了其正确性。最后使用建立的运动学模型对上肢康复医疗机器人执行喝水动作的数据进行了分析,得到了末端手抓的运动轨迹。为了更进一步洞察所设计的上肢康复医疗机器人的动力学性能,使得结构设计更为精准,提供更为和谐的人机交互的环境,有必要对其动力学进行分析。本文采用拉格朗日-欧拉方法对7自由度上肢康复医疗机器人系统进行了动力学建模,得到了机器人各关节的动力学特性信息。最后采用本文建立的动力学模型对VICON动作捕捉系统测量的人手摸对侧肩膀的各关节位移时间历程数据进行了分析,得到了各关节的速度、加速度及广义力信息。对机器人实现最优控制,以达到良好的动态性能和最优指标具有一定的指导意义。本文所作的工作,从理论的角度为上肢康复医疗机器人进一步的控制研究提供了参考依据,也为上肢康复医疗机器人的运动规划与结构优化作出了铺垫。更多还原

【Abstract】 Due to the acceleration of social rhythm, more and more factors can cause disability. As an important rehabilitation medical equipment, the upper-limb rehabilitation robot can make significant roles to improve the situation of disabilities and promote the development of disability industry. The research on the upper-limb rehabilitation robot has become a meaningful and urgent task for building a well off society with harmonious socialist. This paper presents kinematics and dynamics models of 7-dof upper-limb rehabilitation robot, and makes exploratory analysis on performance of kinematics and dynamics.After the study of the modern rehabilitation theory and rehabilitation training method, this paper points out the positive effect of rehabilitation training in the function recovery process. According to the movement requirement of robot joints, this paper carries out functional structure research, explains the mechanical structure and control system of 7-dof upper-limb rehabilitation robot from the modular perspective, also confirms the structural and functional requirement of all parts including selection of different components. This paper also makes some research on performance of pneumatic muscle, which lays the foundation of initial application in a multi-joint robot. Due to the consideration of safety, the robot is chosen to be driven by flexible pneumatic muscle.We establish the kinematics model for 7-dof intelligent upper-limb rehabilitation robot, calculate and verify the coordinate transforming equation of the end hand movement in comparison to initial coordinate. At last, we get the end hand movement by analyze the data of drinking action using the kinematics model we built.After that it is necessary to make dynamic analysis in order to learn more about the dynamic performance of rehabilitation robot, make the structure more precise and provide more friendly man-machine interaction environment.In this paper, we use Lagrange - Euler Methods on 7-dof intelligent upper-limb rehabilitation robot system dynamics modeling, and obtain the dynamics characters of joints of the robot. And then, we acquire the velocity, acceleration, generalized force by analyze the displacement-time data when the 7-dof upper-limb rehabilitation robot touching the opposite shoulder measured by VICON motion capture system. The model we found is useful at optimal control of our robot and can help to achieve good dynamic performance.The work in this paper, from the perspective of theory, provides a reference for further study of rehabilitation robot, also makes the foundation of its movement planning and structural optimization.更多还原