A digital automatic current control system based on an optimum assumed model

Author

Futami, Motoo ; Endoo, Tsunehiro ; Notohara, Yasuo ; Kitayama, Tooru

Author_Institution

Res. Lab., Hitachi Ltd., Ibaraki, Japan

Volume

9

Issue

1

fYear

1994

fDate

1/1/1994 12:00:00 AM

Firstpage

51

Lastpage

55

Abstract

In this paper, a new ACR (automatic current regulator) scheme is introduced for brushless DC motors. It consists of a model closely resembling the motor and PWM inverter, an assumed rising pattern of the current, and a parameter estimation. Using the control scheme, the mean value of the motor current is kept at the reference current, and the transient current of the motor is kept equal to the rising pattern. For the disturbance, because of DC-line voltage change, the proportional path from the error to the duty cycle of the PWM signal stabilizes the ACR. This ACR scheme can be realized with a microcomputer

Keywords

DC motors; controllers; digital control; electric current control; invertors; machine control; microcomputer applications; parameter estimation; power engineering computing; DC-line voltage change; PWM inverter; PWM signal; assumed rising current pattern; brushless DC motors; digital automatic current control system; duty cycle; microcomputer; optimum assumed model; parameter estimation; transient current; Automatic control; Brushless DC motors; Current control; DC motors; Microcomputers; Parameter estimation; Pulse width modulation; Pulse width modulation inverters; Regulators; Voltage;

fLanguage

English

Journal_Title

Power Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0885-8993

Type

jour

DOI

10.1109/63.285493

Filename

285493