The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 16, 1993
Filed:
Jan. 10, 1992
Sumikazu Shamoto, Toyota, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
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.