Medical robotic system with sliding mode control
    3.
    发明授权
    Medical robotic system with sliding mode control 有权
    具滑动模式控制的医疗机器人系统

    公开(公告)号:US07453227B2

    公开(公告)日:2008-11-18

    申请号:US11613962

    申请日:2006-12-20

    IPC分类号: B25J13/08

    摘要: A medical robotic system has a joint coupled to medical device or a slave manipulator or robotic arm adapted to hold and/or move the medical device for performing a medical procedure, and a control system for controlling movement of the joint according to user manipulation of a master manipulator. The control system includes at least one joint controller having a sliding mode control for reducing stick-slip behavior on its controlled joint during fine motions of the joint. The sliding mode control computes a distance to a sliding surface, computes a reaching law gain, and processes the distance and reaching law gain to generate a sliding mode control action that is in absolute value less that a maximum desired feedback control action. The sliding mode control action is then further processed to generate a feedback torque command for the joint motor.

    摘要翻译: 医疗机器人系统具有联接到医疗装置或适于保持和/或移动用于执行医疗程序的医疗装置的从动操纵器或机器人臂的联接器,以及用于根据用户操纵的控制来控制关节的移动的控制系统 主操纵器。 该控制系统包括至少一个具有滑动模式控制的联合控制器,用于在关节的精细运动期间减小其受控关节上的滑动性能。 滑动模式控制计算到滑动表面的距离,计算到达法律增益,并且处理距离和达到法律增益以产生绝对值小于最大期望反馈控制动作的滑动模式控制动作。 然后进一步处理滑动模式控制动作,以产生用于联合马达的反馈扭矩指令。