Abstract
Various advanced control strategies are applied to a direct-drive SCARA robot and studied in computer simulations. Besides computed torque control and direct adaptive control, heuristic optimal control, a new path control scheme for robotic manipulators, is included in the comparison study. PD control, the traditional robot control method, is used for generating a comparing baseline. While all schemes are applied for the same tracking task, the effect of modelling errors and measurement noise is considered in robot performance evaluation. Simulation results show that (1) without model errors, all advanced control schemes can achieve higher tracking accuracy than PD control; (2) with a random measurement error of 1%, computed torque and direct adaptive control methods are inferior to PD control; (3) heuristic control proves to be the most robust control scheme in case of mixed model and measurement errors.
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References
Kuntze, H.-B., Closed-loop algorithms for industrial robots-status and recent trends, Proc. 1st IFAC Symposium on Robot Control (Syroco '85), Barcelona, Spain, pp. 437–444 (1985).
Xu, X. and Schmidt, G., A new path control method for manipulator systems-heuristic control, submitted for publication (1991).
Pearl, J., Heuristics: Intelligent Search Strategies for Computer Problem Solving, Addison Wesley, New York (1984).
Chartfield, C., The Analysis of Time Series. An Introduction, Chapman and Hall, London (1980).
Paul, R., Robot Manipulators, MIT Press, Reading, Mass. (1982).
Slotine, J.-J.E. and Li, W., On the adaptive control of robot manipulators, Int. J. Robotics Res. 6, 49–59 (1987).
Luh, J.Y.S., Walker, M.W. and Paul, R.P.C., Resolved acceleration control of mechanical manipulators, IEEE Trans. Automat. Control AC-25, 468–474 (1980).
Slotine, J.-J.E. and Li, W., Adaptive manipulator control: a case study, IEEE Trans. Automat. Control, AC-33, 995–1003 (1988).
Mayeda, H., Yoshida, K. and Osuka, K., Base parameters of manipulator dynamic models, 5th IEEE Int. Conference on Robotics and Automation, Philadelphia, April 1988, Vol. 3, pp. 1367–1373 (1988).
Richalet, J., Rault, A., Testud, J.L. and Papon, J., Model predictive heuristic control: application to industrial processes, Automatica 14, 413–428 (1978).
Cutler, C.R. and Ramaker, B.C., Dynamic matrix control — a computer control algorithm, JACC, San Francisco, Paper WP5-B (1980).
ElMaraghy, H.A. and Johns, B., An investigation into the compliance of SCARA robots, Trans. ASME 110, 18–30 (1988).
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Schmidt, G., Xu, X. A comparison of model-based path control algorithms for direct-drive SCARA robots. J Intell Robot Syst 5, 241–252 (1992). https://doi.org/10.1007/BF00247420
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DOI: https://doi.org/10.1007/BF00247420