Adaptive gross motion control: a case study

Michael B. Leahy Jr.; Paul V. Whalen; Gary B. Lamont

doi:10.1117/12.25420

1 February 1991 Adaptive gross motion control: a case study

Michael B. Leahy Jr., Paul V. Whalen, Gary B. Lamont

Proceedings Volume 1387, Cooperative Intelligent Robotics in Space; (1991) https://doi.org/10.1117/12.25420
Event: Advances in Intelligent Robotics Systems, 1990, Boston, MA, United States

Abstract

The objective of the Gross Motion Control project at the Air Force Institute of Technology (AFIT) Robotic Systems Laboratory is to investigate alternative control approaches that will provide payload invariant high speed trajectory tracking for non-repetitive motions in free space. Our research has concentrated on modifications to the modelbased control structure. We are actively pursuing development and evaluation of both adaptive primary (inner loop) and robust secondary (output loop) controllers. In-house developments are compared and contrasted to the techniques proposed by other researchers. The case study for our evaluations is the first three links of a PUMA- 560. Incorporating the principals of multiple model adaptive estimation artificial neural networks and Lyapunov theory into the model-based paradigm has shown the potential for enhanced tracking. Secondary controllers based on Quantitative Feedback Theory or augmented with auxiliary inputs significantly improve the robustness to payload variations and unmodeled drive system dynamics. This paper presents an overview of the different concepts under investigation and highlights our latest experimental results.

Citation Download Citation

Michael B. Leahy Jr., Paul V. Whalen, and Gary B. Lamont "Adaptive gross motion control: a case study", Proc. SPIE 1387, Cooperative Intelligent Robotics in Space, (1 February 1991); https://doi.org/10.1117/12.25420

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