| 摘要 |
PURPOSE:To operate a brushless motor stably by detecting the rotary position of a rotor then accessing address data for reading out stored digital data and correcting fluctuation of torque. CONSTITUTION:When a memory address generating section 38 sets initial address data at address input terminals Aa-Ac of U-W phase memories 32a-32c, correction pattern data corresponding to the initial address are provided from the U-W phase memories 32a-32c, then the correction pattern data are converted through D/A converters 34a-34c into analog signals which are then amplified through current amplifiers 36a-36c and fed to U-W phase armature windings 24a-24c. Consequently, a rotor rotates and the rotary condition is detected through a position detector 30 which substantially accesses to a memory address. When output signal from the position detector 30 is led to the memory address generating section 38, next address data are set according to that access data. |
