| 摘要 |
<p>STEPPING MOTOR USING EXTENDED DRIVE PULSES AND METHOD The present invention relates to a stepping motor and a method of operating same. A unit is provided for selectively energizing each of a plurality of phases in response to a drive pulse, wherein each drive pulse has three successive portions. The energizing unit includes a timer for establishing the delineation between the three portions of the drive pulse so that during a first portion of each drive pulse one other drive pulse for one other phase exists simultaneoulsy, during the second portion of each drive pulse drive pulses for none of the other phases exist, and during the third portion of each drive pulse a second other drive pulse for a second other phase exists simultaneously. The timer provides a series of drive pulses for each phase and the third portions of all pulses in each series is of a variable duration and the total duration of each pulse of each series is fixed.</p> |
