Motion planning method and experimental research of medical moxibustion robot of double manipulator arms

Abstract

In order to alleviate the contradiction between the increasing demand of seafarers for moxibustion physiotherapy and the shortage of moxibustion doctors, a medical double-arm moxibustion robot was designed by using a six-degree-of-freedom mechanical arm and a four-degree-of-freedom mechanical arm to simulate traditional Chinese medicine moxibustion techniques. The robot coordinate system was established by D-H parameter method, and the forward and inverse kinematics of the robot model were calculated. The robot model was established and simulated by Robotics Toolbox in MATLAB. The angular velocity and angular acceleration curves of each joint and the trajectory and displacement of the robot end were obtained, and the feasibility of robot trajectory planning was verified. Through the preliminary design, the collaborative process of task assignment for double moxibustion robot was established. The simulation test bench was built to further simulate the temperature of human epidermis, and the relationship between the end distance of moxibustion robot and the heating of human epidermis was determined. The simulation and experimental results show that: a) The robot does not appear serious impact or stutter phenomenon in the simulation process, and the kinematics performance is good, which verifies the feasibility of the robot model; and b) during the simulation test, the heating temperature of human epidermis can be maintained at 43 °C, which realizes the expected moxibustion temperature of patients and verifies the effectiveness of the robot model.