Haptic interfaces in generic virtual reality systems

Presents an approach to implementing haptic interfaces in generic virtual reality systems. Typical implementations of virtual environment simulations with haptic rendering conceive the haptic interface intrinsically linked to the virtual scene update. In this framework, the haptic feedback estimation depends on the methods used to simulate the virtual scene and the haptic feedback rate depends on the scene update rate. This dependence ties the development of the simulation system and strongly limits the complexity of simulated scenes due to the high feedback rate (/spl sim/1 KHz) demanded by a realistic haptic rendering. We propose a new structure to systems having a haptic interface, decoupling the haptic rendering from the virtual environment simulation and introducing a "buffer model" between them. We successfully applied this approach to interface a deformable objects simulator with a Phantom haptic device.

[1]  Frederick P. Brooks,et al.  Feeling and seeing: issues in force display , 1990, I3D '90.

[2]  Mark R. Cutkosky,et al.  Stable User-Specific Haptic Rendering of the Virtual Wall , 1996, Dynamic Systems and Control.

[3]  Oussama Khatib,et al.  Haptic interaction in virtual environments , 1997, Proceedings of the 1997 IEEE/RSJ International Conference on Intelligent Robot and Systems. Innovative Robotics for Real-World Applications. IROS '97.

[4]  James M. Van Verth,et al.  Adding force feedback to graphics systems: issues and solutions , 1996, SIGGRAPH.

[5]  John Kenneth Salisbury,et al.  A constraint-based god-object method for haptic display , 1995, Proceedings 1995 IEEE/RSJ International Conference on Intelligent Robots and Systems. Human Robot Interaction and Cooperative Robots.

[6]  Oussama Khatib,et al.  Haptic display for human interaction with virtual dynamic environments , 2001, J. Field Robotics.

[7]  J. Edward Colgate,et al.  Implementation of stiff virtual walls in force-reflecting interfaces , 1993, Proceedings of IEEE Virtual Reality Annual International Symposium.

[8]  Blake Hannaford,et al.  Stable haptic interaction with virtual environments , 1999, IEEE Trans. Robotics Autom..