马如奇, 王伟东, 董为, 杜志江. 基于改进梯度投影算法的腹腔微创外科手术机器人系统术前摆位分析[J]. 机器人, 2014, 36(2): 156-163.DOI: 10.3724/SP.J.1218.2014.00156.
MA Ruqi, WANG Weidong, DONG Wei, DU Zhijiang. Preoperative Positioning Analysis of the Celiac Minimally Invasive Surgery Robotic System Based on an Improved Gradient Projection Algorithm. ROBOT, 2014, 36(2): 156-163. DOI: 10.3724/SP.J.1218.2014.00156.
In celiac minimally invasive robotic laparoscope surgery (MILS), motion interference of two manipulators should be avoided during cooperative operation, such as suturing and knotting operation. A reasonable operation space for two instrument manipulators is given by preoperative positioning analysis. Firstly, the maximum distance index between the two manipulators is selected as the objective optimization function of the gradient projection algorithm. And a closed-form inverse solution of the manipulators is used to improve the algorithm, which can eliminate the cumulative error existed in the inverse kinematics solving process of the gradient projection algorithm. At last, the improved gradient projection algorithm is applied to the preoperative positioning analysis of the celiac minimally invasive surgical robot system. The simulation results show that the improved method can satisfy the preoperative positioning requirements of the surgery system.
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