Title
Multirate Control Of Haptic Interface For Stability And High Fidelity
Abstract
This paper presents an analytic design of multirate controllers to guarantee stable haptic interaction and high fidelity. When the reflective force is computed by using slowly-simulated virtual model, the control frequency of the conventional controller becomes low. This increases the zero-order-hold effect, and makes the system unstable. We propose a multirate control method to reduce the zero-order-hold effect. The multirate controller is implemented by adding a high-frequency controller to the conventional controller. The high-frequency controller is designed to compensate the energy generated by the conventional controller. The stability analysis of the multirate haptic control system shows that the stiffness of the virtual model can be increased while maintaining the stability. A nonlinear virtual coupling is designed using this multirate control scheme. The multirate controller is evaluated by mathematical analysis and experiments.
Year
DOI
Venue
2004
10.1109/ICSMC.2004.1400712
2004 IEEE INTERNATIONAL CONFERENCE ON SYSTEMS, MAN & CYBERNETICS, VOLS 1-7
Keywords
Field
DocType
haptic control, multirate control
High fidelity,Control theory,Nonlinear system,Virtual reality,Coupling,Simulation,Computer science,Control theory,Control system,Open-loop controller,Haptic technology
Conference
ISSN
Citations 
PageRank 
1062-922X
4
0.44
References 
Authors
5
2
Name
Order
Citations
PageRank
kyungno lee1243.83
Doo Yong Lee225234.35