Control Through State Convergence of Teleoperation Systems with Varying Time Delay

Teleoperation systems that use Internet as communication channel must deal with varying time delays. In these situations, the system can become unstable due to the irregular variations of the time delay. In this paper, a control method of teleoperation systems that we presented considering constant time delays is applied to control a teleoperation system with varying time delays. The control gains obtained with a constant time delay can be used to control the teleoperation system with varying time delays because of the control method robustness. Experimental results are presented to illustrate the validity of the method.

[1]  Mark W. Spong,et al.  Bilateral control of teleoperators with time delay , 1988, Proceedings of the 1988 IEEE International Conference on Systems, Man, and Cybernetics.

[2]  R. Aracil,et al.  Dynamic analysis for a teleoperation system with time delay , 2003, Proceedings of 2003 IEEE Conference on Control Applications, 2003. CCA 2003..

[3]  Mark W. Spong Motion Control of Robot Manipulators , 1996 .

[4]  Claudio Melchiorri,et al.  Control schemes for teleoperation with time delay: A comparative study , 2002, Robotics Auton. Syst..

[5]  Ilia G. Polushin,et al.  Stabilization of bilaterally controlled teleoperators with communication delay: An ISS approach , 2003 .

[6]  S. Hirche,et al.  Bilateral teleoperation over the internet: the time varying delay problem , 2003, Proceedings of the 2003 American Control Conference, 2003..

[7]  Kazuhiro Kosuge,et al.  Bilateral feedback control of telemanipulators via computer network , 1996, Proceedings of IEEE/RSJ International Conference on Intelligent Robots and Systems. IROS '96.

[8]  Paolo Fiorini,et al.  A Design and Control Environment for Internet-Based Telerobotics , 1998, Int. J. Robotics Res..

[9]  Zhong-Ping Jiang,et al.  Small-gain theorem for ISS systems and applications , 1994, Math. Control. Signals Syst..

[10]  I.G. Polushin,et al.  The ISS small gain approach to stabilization of bilaterally controlled teleoperators with communication delay , 2003, 2003 European Control Conference (ECC).

[11]  Rafael Aracil,et al.  A New Control Method of Teleoperators with Time Delay , 2003 .

[12]  A. Teel Connections between Razumikhin-type theorems and the ISS nonlinear small gain theorem , 1998, IEEE Trans. Autom. Control..

[13]  Jean-Jacques E. Slotine,et al.  Stable Adaptive Teleoperation , 1990, 1990 American Control Conference.

[14]  J. Hale Theory of Functional Differential Equations , 1977 .

[15]  Eduardo Sontag,et al.  Notions of input to output stability , 1999, Systems & Control Letters.