Motor controller and steering device

Details Motor controller and steering device Motor controller and steering device

2007-07-24

2007-07-24

Donovan, Lincoln (Department: 2837)

Electricity: motive power systems

Induction motor systems

Primary circuit control

C318S432000, C318S434000, C318S599000

Reexamination Certificate

active

11268542

ABSTRACT:
A motor controller including an inverter including plural switching elements that are subjected to PWM control to generate sine waves of plural phases, a motor including a stator coil supplied with the sine waves thus generated so that rotational magnetic field is generated in the stator coil, and a rotor that is rotationally driven by the action of the rotational magnetic field generated by the stator coil, a storage unit for detecting the sine waves of the respective phases generated in the inverter and storing a correction amount for each phase that is calculated on the basis of the detection result so that the sine waves of the respective phases are coincident with one another and a correcting unit for correcting a PWM signal for carrying out the PWM control on the switching elements on the basis of the correction amount thus calculated.

REFERENCES:
patent: A-2000-85610 (2000-03-01), None
patent: A-2002-10685 (2002-01-01), None

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