Electricity: motive power systems – Positional servo systems – Digital or numerical systems
Patent
1992-01-10
1993-03-16
Ip, Paul
Electricity: motive power systems
Positional servo systems
Digital or numerical systems
318434, 318432, 318138, 318254, 36442405, 180142, 180 791, H02P 602
Patent
active
051947943
ABSTRACT:
A control apparatus for controlling an output torque of a brushless electric motor based on a torque command signal received from a torque command signal generator. The control apparatus includes magnetic pole position sensors for producing position signals indicative of a rotational position of a rotor of the motor. A counter outputs an address signal based on the position signals. A sine wave memory, which stores plural sine waves, outputs a sine wave signal based on the address signal. Then the amplitude of the sine wave signal is linearly controlled based on the torque command signal, and stator current is applied to stator windings of the motor based on the linearly controlled sine wave signal.
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Ip Paul
Toyota Jidosha & Kabushiki Kaisha
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