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Frontiers of Mechanical Engineering >> 2022, Volume 17, Issue 3 doi: 10.1007/s11465-022-0698-y

Development of a novel hand−eye calibration for intuitive control of minimally invasive surgical robot

State Key Laboratory of Robotics and Systems, Harbin Institute of Technology, Harbin 150001, China;State Key Laboratory of Robotics and Systems, Harbin Institute of Technology, Harbin 150001, China;State Key Laboratory of Robotics and Systems, Harbin Institute of Technology, Harbin 150001, China

Received: 2021-12-01 Available online: 2021-12-01

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Abstract

Robotic-assisted surgical system has introduced a powerful platform through dexterous instrument and hand−eye coordination intuitive control. The knowledge of laparoscopic vision is a crucial piece of information for robot-assisted minimally invasive surgery focusing on improved surgical outcomes. Obtaining the transformation with respect to the laparoscope and robot slave arm frames using hand−eye calibration is essential, which is a key component for developing intuitive control algorithm. We proposed a novel two-step modified dual quaternion for hand−eye calibration in this study. The dual quaternion was exploited to solve the hand−eye calibration simultaneously and powered by an iteratively separate solution. The obtained hand−eye calibration result was applied to the intuitive control by using the hand−eye coordination criterion. Promising simulations and experimental studies were conducted to evaluate the proposed method on our surgical robot system. We extensively compared the proposed method with state-of-the-art methods. Results demonstrate this method can improve the calibration accuracy. The effectiveness of the intuitive control algorithm was quantitatively evaluated, and an improved hand−eye calibration method was developed. The relationship between laparoscope and robot kinematics can be established for intuitive control.

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