Stepping motor control apparatus

Details Stepping motor control apparatus Stepping motor control apparatus

1999-04-20

2000-03-07

Ip, Paul

Electricity: motive power systems

Positional servo systems

With particular motor control system responsive to the...

318696, 123339, 123361, 123399, F02D 4500, G02P 800, G05B 1940

Patent

active

060345004

ABSTRACT:
A stepping motor control apparatus for controlling a stepping motor to drive a fluid flow control valve in an engine includes an operation state monitoring unit for monitoring the operation state of the engine; a step position monitoring unit for monitoring a step position of the stepping motor; a first motor drive direction-determining unit for determining the motor drive direction during normal operations of the stepping motor as determined by a target step position and the present step position of the stepping motor; a second motor drive direction-determining unit for determining the motor drive direction during anomalous operations of the stepping motor; a drive pulse-rate determining unit for determining the pulse generation rate to drive the stepping motor; and a drive unit for driving the stepping motor at the pulse generation rate determined by the drive pulse-rate determining unit.

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