It is well understood that the robustness of mechanical and robotic control systems depends critically on minimizing sensitivity to arbitrary application-specific details whenever possible. For example, if a system is defined and performs well in one particular Euclidean coordinate frame then it should be expected to perform identically if that coordinate frame is arbitrarily rotated or scaled. Similarly, the performance of the system should not be affected if its key parameters are all consistently defined in metric units or in imperial units. In this paper we show that a recently introduced generalized matrix inverse permits performance consistency to be rigorously guaranteed in control systems that require solutions to underdetermined and/or overdetermined systems of equations. We analyze and empirically demonstrate how these theoretical guarantees can be directly obtained in a practical robotic arm system.
Applying a Unit-Consistent Generalized Matrix Inverse for Stable Control of Robotic Systems
Contributed by the Mechanisms and Robotics Committee of ASME for publication in the Journal of Mechanisms and Robotics. Manuscript received July 21, 2018; final manuscript received March 27, 2019; published online April 22, 2019. Assoc. Editor: Tuhin Das.
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Zhang, B., and Uhlmann, J. (April 22, 2019). "Applying a Unit-Consistent Generalized Matrix Inverse for Stable Control of Robotic Systems." ASME. J. Mechanisms Robotics. June 2019; 11(3): 034503. doi: https://doi.org/10.1115/1.4043371
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