Stepper motor control and fire detection system
AssigneeThermal Imaging Radar, LLC
InventorsMichael D. DORTCH, Larry J. PRICE, Brian A. WITTMAN, Shaun P. GREENE
Life of this patent
Estimating the term…
Abstract
Controlling a stepper motor. A stepper motor is driven towards an index position. An attempt is made to stop the stepper motor on the index position in a fashion that would ordinarily cause the stepper motor to ring at the index position. Characteristics of one or more subsequent pulses that would counteract the ringing are determined. The one or more determined subsequent pulses are issued to the stepper motor.
Claims20
A method of controlling a stepper motor, the method comprising:
- driving a stepper motor towards an index position;
- attempting to stop the stepper motor on the index position in a fashion that would ordinarily cause the stepper motor to ring at the index position;
- determining characteristics of one or more subsequent pulses to counteract the ringing;
- and
- issuing the one or more determined subsequent pulses.
A motor system configured to dampen ringing of a stepper motor when stopping the stepper motor, the system comprising:
- a stepper motor, the stepper motor being configured to be driven to an index position, wherein the stepper motor ordinarily exhibits ringing of a rotor of the motor when initially stopped at the index position;
- and
- a controller coupled to the stepper motor, wherein the controller is configured to emit one or more pulses to the stepper motor, wherein the one or more pulses are configured to counteract the ringing of the rotor.
A physical computer readable memory, wherein the memory comprises computer executable instructions that when executed by one or more processors is configured to cause the following to be performed:
- driving a stepper motor towards an index position;
- attempting to stop the stepper motor on the index position in a fashion that would ordinarily cause the stepper motor to ring at the index position;
- determining characteristics of one or more subsequent pulses to counteract the ringing;
- and
- issuing the one or more determined subsequent pulses.
Dependencies are inferred from the claim text.