High speed robust visual servoing based on intersample estimation and multirate control
7th International Workshop on Advanced Motion Control. Proceedings (Cat. No.02TH8623) - Trang 104-109
Tóm tắt
This paper presents a visual servoing system based on intersample estimation and disturbance rejection. First, a novel design method of a multirate sampling controller is proposed which enables to reject disturbance completely at M intersample points in the steady state. Second, the intersample observer is developed in order to reduce the phase delay caused by zero-order hold and to increase the stability robustness. Third, the novel scheme of repetitive control is proposed based on the open-loop estimation and switching function, which enables the rejection of periodical disturbance without any sacrifice of the closed-loop characteristics. Finally, the proposed controllers are applied to visual servo system by introducing the workspace controller and nonlinear perspective transformation. The advantages of these approaches are demonstrated by simulations and experiments using a robot manipulator.
Từ khóa
#Robust control #Visual servoing #Open loop systems #Robust stability #Nonlinear control systems #Control systems #Design methodology #Sampling methods #Steady-state #ObserversTài liệu tham khảo
10.1109/70.538972
10.1109/ROBOT.1995.525330
10.1115/1.2900680
10.1109/70.88086
10.1109/41.370377
10.1109/ISIE.1997.649085
nakadokoro, 1999, Stereo visual servo of robot manipulators by estimated image features without 3d reconstruction, IEEE International Conference on Systems Man and Cybernetics, 1, 571
10.1109/CDC.1999.833393
10.1109/41.925591
10.1080/00207178608933692
10.1109/.2001.980122
smith, 1999, Cost effective repetitive controllers for data storage devices, 14th IFAC World Congress, b, 407
10.1109/20.753805
fujimoto, 2000, General framework of multirate sampling control and applications to motion control systems
araki, 1993, Recent developments in digital control theory, 12th IFAC World Congress, 9, 251
10.1109/JRA.1987.1087115