Stepper motor with common solenoid current driver

摘要

A stepper motor assembly includes a unipolar winding stepper motor, four drivers, and a transmission control module. The stepper motor has four coil parts. Each driver has a transistor connected to one of the coil parts. Each driver is operable to drive a phase of the stepper motor, where first and second phases are opposites of each other and third and fourth phases are opposites of each other. The transmission control module houses the four transistors. A transmission is also disclosed that includes the disclosed stepper motor assembly.

主权项

1. A stepper motor assembly comprising:
a unipolar winding stepper motor comprising a first coil part having a first wire end, a second coil part having a second wire end, a third coil part having a third wire end, and a fourth coil part having a fourth wire end; a first driver having a first transistor connected to the first wire end, the first driver operable to drive a first phase of the stepper motor; a second driver having a second transistor connected to the second wire end, the second driver operable to drive a second phase of the stepper motor, the second phase being opposite the first phase; a third driver having a third transistor connected to the third wire end, the third driver operable to drive a third phase of the stepper motor; a fourth driver having a fourth transistor connected to the fourth wire end, the fourth driver operable to drive a fourth phase of the stepper motor, the fourth phase being opposite the third phase; a transmission control module housing the first, second, third, and fourth transistors, and a first center wire connected to the first and second coil parts and a second center wire connected to the third and fourth coil parts; and wherein each of the transistors is a metal-oxide-semiconductor field-effect transistor, MOSFET.