International Conference Kyo-Beum Lee and Frede Blaabjerg, "Robust and Stable Disturbance Observer of Servo System for Low Speed Operation Using the Radial Basis Function Network," in Proc. IAS Conf., Oct. 2005, pp. 1705–1710.
2005
본문
A new scheme to estimate the moment of inertia in the servo motor drive system in very low speed is proposed in this paper. The
speed estimation scheme in most servo drive systems for low speed operation is sensitive to the variation of machine parameter,
especially the moment of inertia. To estimate the motor inertia value, the observer using the Radial Basis Function Network (RBFN) is
applied. A control law for stabilizing the system and adaptive laws for updating both of the weights in the RBFN and a bounding
constant are established so that the whole closed-loop system is stable in the sense of Lyapunov. The effectiveness of the proposed
inertia estimation is verified by simulations and experiments. It is concluded that the speed control performance in low speed region
is improved with the proposed disturbance observer using RBFN.
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