Virtual reality is becoming very important for training medical surgeons in various operations. Interfacing users with a virtual training environment, requires the existence of a properly designed haptic device. This paper presents the design of a new force feedback haptic mechanism with five active degrees of freedom (dof), which is used as part of a training simulator for urological operations. The mechanism consists of a two dof, 5-bar linkage and a three dof spherical joint, designed to present low friction, inertia and mass, to be statically balanced, and have a simple mass matrix. The device is suitable for the accurate application of small forces and moments. All five actuators of the haptic device are base-mounted DC motors and use a force transmission system based on capstan drives, pulleys and miniropes. The paper describes the chosen design, and its kinematics, dynamics, and control algorithm and hardware employed.
- Design Engineering Division and Computers and Information in Engineering Division
On the Design of a Low-Force 5-DOF Force-Feedback Haptic Mechanism
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Papadopoulos, E, Vlachos, K, & Mitropoulos, D. "On the Design of a Low-Force 5-DOF Force-Feedback Haptic Mechanism." Proceedings of the ASME 2002 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. Volume 5: 27th Biennial Mechanisms and Robotics Conference. Montreal, Quebec, Canada. September 29–October 2, 2002. pp. 767-774. ASME. https://doi.org/10.1115/DETC2002/MECH-34287
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