Electricity: motive power systems – Switched reluctance motor commutation control
Reexamination Certificate
2006-10-03
2006-10-03
Donovan, Lincoln (Department: 2837)
Electricity: motive power systems
Switched reluctance motor commutation control
C318S132000, C318S434000, C318S685000, C318S696000, C318S700000
Reexamination Certificate
active
07116070
ABSTRACT:
A system and method for sensor less control of a stepper motor is described. The system and method includes estimation of the position of a rotor of the motor by way of sensing circuitry on the windings of the motor, without the use of positional sensors. The system and method of stepper motor control further includes magnetic field optimization for increasing the torque generating component of a magnetic field generated by stators of the motor, and magnetic field weakening for countering some of the effects of back electromotive force generated by the magnetic rotor.
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Agile Systems Inc.
Donovan Lincoln
McCarthy Tétrault LLP
Smith Tyrone
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