A Gain-Switching Control Scheme for Position-Error-Based Bilateral Teleoperation: Contact Stability Analysis and Controller Design

Abstract

To lower the cost of a force-reflecting teleoperation system, position errors instead of direct measurements from force/torque sensors can be used for force feedback. An investigation on transparency shows that position-error-based teleoperation provides poor transparency when using constant controller gains, and this can be overcome by gain switching. The scenario studied in this paper is a position-errorbased bilateral teleoperation system when the slave robot is either in free motion or colliding with a stationary stiff environment. A contact stability analysis is presented for teleoperation systems with constant controller gains and then extended to a gain-switching teleoperation system. Issues on the design of a gain-switching control scheme are discussed. The effectiveness of the proposed gain-switching control scheme is evaluated experimentally.

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References

Anderson, R. J., and Spong, M. W. 1989. Bilateral control of teleoperators with time delay . IEEE Transactions on Automation and Control 34(5): 494–501 .

Ching, M., and Wang, D. W. L. 1997. A five-bar-linkage force reflecting interface for a virtual reality system. In Proceedings of the IEEE International Conference on Robotics and Automation, Albuquerque, NM , pp. 3012–3017.

Coddington, E. A. and Levinson, N. 1955. Theory of Ordinary Differential Equations, McGraw-Hill, New York .

Dubey, R. V., Chan, T. F., and Everett, S. E. 1997. Variable damping impedance control of a bilateral telerobotic system . IEEE Control System Magazine 17(1): 37–45 .

Hannaford, B. 1989. A design framework for teleoperators with kinesthetic feedback . IEEE Transactions on Robotics and Automation 5(4): 426–434 .

Hannaford, B., and Anderson, R. J. 1988. Experimental and simulation studies of hard contact in force reflecting teleoperation. In Proceedings of the IEEE International Conference on Robotics and Automation, Philadelphia, PA , pp. 584–589.

Hashtrudi-Zaad, K., and Salcudean, S. E. 2000. Analysis and evaluation of stability and performance robustness for teleoperation control architectures. In Proceedings of the IEEE International Conference on Robotics and Automation, San Francisco, CA , pp. 3107–3113.

Haykin, S. S. 1970. Active Network Theory, Addison-Wesley, Reading, MA .

Hogan, N. 1989. Controlling impedance at the man/machine interface. In Proceedings of the IEEE International Conference on Robotics and Automation, Scottsdale, AZ , pp. 1626–1631.

10.

Khalil, H. K. 1996. Nonlinear Systems, Prentice-Hall, Upper Saddle River, NJ .

11.

Lawrence, D. A. 1993. Stability and transparency in bilateral teleoperation . IEEE Transactions on Robotics and Automation 9(5): 624–637 .

12.

Madill, D. R. 1998. Modelling and control of a haptic interface: a mechatronics approach. Ph. D. Thesis, Department of Electrical and Computer Engineering, University of Waterloo.

13.

Ni, L., and Wang, D. W. L. 2002. Contact transition stability analysis for a bilateral teleoperation system. In Proceedings of the IEEE International Conference on Robotics and Automation, Washington DC , pp. 3272–3277.

14.

Niemeyer, G., and Slotine, J.-J. E. 1991. Stable adaptive teleoperation . IEEE Journal of Oceanic Engineering 16(1): 152–162 .

15.

Raju, G. J., Verghese, G. C., and Sheridan, T. B. 1989. Design issues in 2-port network models of bilateral remote teleoperation. In Proceedings of the IEEE International Conference on Robotics and Automation, Scottsdale, AZ , pp. 1317–1321.

16.

Reboulet, C., Plihon, Y., and Briere, Y. 1997. Interest of the dual hybrid control scheme for teleoperation with time delays. In Experimental Robotics IV: The 4th International Symposium, 1995, Stanford, CA, Khatib, O. and Salisbury, J. K., editors, Springer-Verlag, LNCIS Vol. 223, pp. 498–506.

17.

Salcudean, S. E., Hashtrudi-Zaad, K., Tafazoli, S., DiMaio, S. P., and Reboulet, C. 1999. Bilateral matched-impedance teleoperation with application to excavator control . IEEE Control System Magazine 19(6): 29–37 .

18.

Slotine, J.-J. E., and Li W. 1991. Applied Nonlinear Control, Prentice-Hall, Englewood Cliffs, NJ .

19.

Turner, C. F., and Wang, D. W. L. 2001. A Virtual Reality Mouse Friction Model, Technical Report UWE&CE#2001-13, Department of Electrical and Computer Engineering, University of Waterloo .

20.

Warwick, K. 1988. Implementation of Self-Tuning Controllers, Peter Peregrinus, London .

21.

Yigit, A. S., Ulsoy, A. G., and Scott, R. A., 1990. Dynamics of a radially rotating beam with impact, part 1: theoretical and computational model . Journal of Vibration and Acoustics 112: 65–70 .

22.

Yokokohji, Y., and Yoshikawa, T. 1994. Bilateral control of master–slave manipulators for ideal kinesthetic coupling—formulation and experiment . IEEE Transactions on Robotics and Automation 10(5): 605–619 .