| 主从式外科手术机器人实时控制算法 |
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| 引用本文： | 丁杰男,王树新,贠今天,李群智,韩宝平. 主从式外科手术机器人实时控制算法[J]. 机械工程学报, 2006, 42(12): 163-168 |
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| 作者姓名： | 丁杰男 王树新 贠今天 李群智 韩宝平 |
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| 作者单位： | 天津大学机械工程学院,天津,300072;天津医院显微手术科,天津,300211 |
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| 基金项目： | 国家自然科学基金;高等学校博士学科点专项科研项目;教育部跨世纪优秀人才培养计划 |
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| 摘 要： | 针对机器人运动模型的非线性，导致异构型主从式外科手术机器人系统控制算法需要大量的计算的问题。基于线性化的思想，利用逆Jacobian矩阵将笛卡尔速度映射到关节速度，并用关节瞬时速度代替微小时间段内位移，线性化机器人运动学模型，减小计算量，满足机器人实现缝合打结等手术操作的实时性要求。通过增加反馈环节，消除机器人在工作空间下线性化模型的误差累积，提高系统整体大范围运动精度。关节空间内的样条插值方法，有效改善机器人运动特性，消除人手的抖动。本算法应用在“妙手”外科手术机器人系统上，成功地对兔子腿部微细动脉进行血管吻合手术操作。
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| 关 键 词： | 外科机器人 遥操作 人手抖动 样条插值 轨迹规划 |
| 修稿时间： | 2005-09-27 |
REALTIME CONTROL ALGORITHM FOR TELEOPERATED SURGERY ROBOT |
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| DING Jienan,WANG Shuxin,YUN Jintian,LI Qunzhi,HAN Baoping. REALTIME CONTROL ALGORITHM FOR TELEOPERATED SURGERY ROBOT[J]. Chinese Journal of Mechanical Engineering, 2006, 42(12): 163-168 |
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| Authors: | DING Jienan WANG Shuxin YUN Jintian LI Qunzhi HAN Baoping |
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| Affiliation: | School of Mechanical Engineering, Tianjin University Department of Microsurgery, Tianjin Hospital |
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| Abstract: | As a result of isomery between master and slave, teleoperated surgical robot must process enormous calculation. Based on linearize ideology,a novel algorithm which can sat- isfy the surgical operation that requires quick response,high precise and safety is presented.At first,the velocity in cartesian frame is mapped to the velocity in joint frame through the in- verse Jacobian matrix,and then makes the instant velocity in- stead of the distance of the joint.Therefore the calculation is simplified to satisfy the realtime requirement of surgery.As a feedback signal,error between master and slave is applied to eliminate error generated by approximate linear kinematics. Cubic interaction in joint space is used to eliminate surgeon's tremor and control the robot safely and smoothly.Based on the algorithm,MicroHand system accomplishes the vas suturing experiment for a rabbit's leg micro artery. |
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| Keywords: | Surgical robot Teleoperation Hand tremor Cubic interaction Trajectory plan |
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