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Published on: November 14, 2015
Dynamic Modelling of the Surgery Arm in Sinaflex Robotic Telesurgery System
Ramazan Rajabi1, Mehrnaz Aghanouri1, Hamid Moradi2
1Department of Medical Physics and Biomedical Engineering, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran.
Developing a precise dynamic model for robotic arms is crucial for enhancing robotic telesurgery accuracy. This study presents a method for identifying robot dynamic parameters, achieving accurate joint torque predictions for complex robotic mechanisms.
Area of Science:
- Robotics
- Control Systems
- Surgical Technology
Background:
- Robotic telesurgery adoption is rising due to its precision and reduced complications.
- Accurate dynamic models are essential for enhancing robotic arm precision in telesurgery systems.
Purpose of the Study:
- To develop a precise dynamic model for a novel slave robot within the Sinaflex robotic telesurgery system.
- To improve the accuracy of robotic arms through effective parameter identification.
Main Methods:
- Derivation and linearization of dynamic equations for the slave robot.
- Definition of optimal excitation trajectories for parameter estimation.
- Estimation of dynamic parameters using least squares optimization.
Main Results:
- The developed dynamic model accurately predicts joint torques.
- Root Mean Square (RMS) errors for torque prediction ranged from 0.58 to 1.48 Nm.
Conclusions:
- The proposed method effectively identifies dynamic parameters for robots with complex mechanisms.
- Accurate dynamic parameter identification enhances the performance of robotic telesurgery systems.
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