A single-chip CMOS IC for closed-loop control of step motors

Author

Amaratunga, Gehan ; Kwan, Kin-Wah ; Tso, M. ; Crawley, David

Author_Institution

Dept. of Eng., Cambridge Univ., UK

Volume

36

Issue

4

fYear

1989

fDate

11/1/1989 12:00:00 AM

Firstpage

539

Lastpage

544

Abstract

A CMOS integrated circuit for the closed-loop drive of step motors that avoids direct rotor position sensing is reported. The sequencer is integrated with the control circuit. The circuit has been fabricated on a 4 μm gate array, and its operation with the motor and chopper drive is characterized. Dynamic torque-speed characteristics, which are linear up to 85% of the maximum static torque with a 40% increase in power output compared to open-loop operation, have been obtained from a test motor. The CMOS integrated circuit controller makes the use of a step motor a viable alternative to series DC motors. It can be extended to provide a closed-loop drive circuit for step-mode operation

Keywords

CMOS integrated circuits; closed loop systems; electric drives; position control; stepping motors; 4 micron; chopper drive; closed-loop control; control circuit; gate array; rotor position sensing; sequencer; single-chip CMOS IC; step motors; torque-speed characteristics; CMOS integrated circuits; Choppers; Circuit testing; Computer science; Costs; DC motors; Open loop systems; Rotors; Stator windings; Torque;

fLanguage

English

Journal_Title

Industrial Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0278-0046

Type

jour

DOI

10.1109/41.43013

Filename

43013