초록 ▼

A motor speed controller which detects the position y(i-k) of a motor at the time K.multidot.Ts (k.gtoreq.0, Ts: sampling period) ago from the present time (i) and feedback-controls the speed of the motor by using a motor speed feedback signal Vfb calculated based on the detection signal is provided

A motor speed controller which detects the position y(i-k) of a motor at the time K.multidot.Ts (k.gtoreq.0, Ts: sampling period) ago from the present time (i) and feedback-controls the speed of the motor by using a motor speed feedback signal Vfb calculated based on the detection signal is provided with a means which calculates a torque command u(i) from a speed command and the motor speed feedback signal vfb, means which calculates the speed v(i-k) from the position y(i-k), means which stores the values of the speed v(i-m) (m=k, . . . , M') from M' sampling periods before to the time i-K, a predictor which predicts the speed prediction value v*(i+m) (m=-K+1, . . . , M) at the times up to M sampling periods after from the dynamic characteristic model of the motor, the torque command u(i), and the position y(i-K), and means which finds the speed feedback signal from formula: ]EQU1 ] where Wm and W'm represent weight factors.

대표청구항 ▼

[ What is claimed is:] [1.] A motor speed control device in which, at present time instant i, a prior time motor position y(i-K) (where K.gtoreq.0) is detected to provide a detection signal, and a motor speed feedback signal V.sub.fb is calculated using the detection signal for feedback control, com

[ What is claimed is:] [1.] A motor speed control device in which, at present time instant i, a prior time motor position y(i-K) (where K.gtoreq.0) is detected to provide a detection signal, and a motor speed feedback signal V.sub.fb is calculated using the detection signal for feedback control, comprising:means for calculating a torque command u(i) from a speed command and the motor speed feed back signal V.sub.fb ;means for calculating a speed v(i-K) from the prior time motor position y(i-K);means for storing a motor speed v(i-m) (where m=K, . . . , M') which occurs from a past M'-th sampling to a time instant i-K;a predictor for obtaining a speed prediction value v*(i+m) (where m=-K+1, . . . , M) at a future M-th sampling from a motor dynamic characteristic model, the torque command u(i) and the prior time motor position y(i-K); andmeans for calculating the motor speed feedback signal from the following formula: ]EQU12 ] where W.sub.m and W'.sub.m are weight coefficients.