Method for controlling velocity of a rotary motor and an apparat

Electricity: motive power systems – With particular motor-driven load device – Tension-maintaining type of motor-control system

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Details

318561, 318609, 318610, 360 7304, 360 71, 2423342, 2423346, B65H 5938, G11B 1543

Patent

active

056660340

ABSTRACT:
A velocity control method for a rotary motor and an apparatus adopting the same estimates and corrects a disturbance applied to the rotary motor to improve a velocity control characteristic. The disturbance is expressed as a function of an angular velocity and an angular position via a simple calculation process. The velocity control apparatus includes a learning compensator for receiving a velocity command, angular position information and the output of a velocity controller and correcting an effect of the disturbance which is expressed as a function of the angular velocity and the angular position, in addition to a general velocity control loop of a rotary motor composed of a velocity controller, a current controller, a motor and a velocity measuring unit. The learning compensator stores one period of the output of the velocity controller at a steady state of the velocity control loop and obtains a correction value using the stored value and the previous output value. The correction value obtained in the learning compensator is stored in advance and velocity control is performed using the stored value.

REFERENCES:
patent: 5395066 (1995-03-01), Yokoyama et al.
patent: 5481417 (1996-01-01), Yokoyama et al.
patent: 5491594 (1996-02-01), Yamamoto et al.

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