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On the Robust Outer Loop Control of Robotic Systems
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摘要
Most industrial/commercial robots typically employ an unmodifiable inner joint controller and only the joint position or velocity command can be designed by the user. In this paper, we propose a robust approach to the control of such robotic systems with the uncertainty and nonlinearity being taken into consideration. We develop robust outer loop controllers that can rigorously ensure the uniform ultimate boundedness of the closed-loop system, without relying on the ad hoc assumption of the conventional kinematic controller that the effects of the dynamics can be neglected. The performance of the proposed robust outer loop controllers is shown by numerical simulations with a three-DOF(degree-of-freedom) manipulator.
Most industrial/commercial robots typically employ an unmodifiable inner joint controller and only the joint position or velocity command can be designed by the user. In this paper, we propose a robust approach to the control of such robotic systems with the uncertainty and nonlinearity being taken into consideration. We develop robust outer loop controllers that can rigorously ensure the uniform ultimate boundedness of the closed-loop system, without relying on the ad hoc assumption of the conventional kinematic controller that the effects of the dynamics can be neglected. The performance of the proposed robust outer loop controllers is shown by numerical simulations with a three-DOF(degree-of-freedom) manipulator.
引文
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