| 摘要 |
PURPOSE:To suppress torque ripple or temperature rise of motor even when higher harmonics are suppressed. CONSTITUTION:A low speed interruption processing section 11 operates tlambda, tmu and 2t0 thus operating pulse width. A high speed interruption processing section 12 operates only TN ( T) and sets a count in a PWM generating timer based on the operation result. A PWM generation/operation processing section 13 processes the outputs from the high and low speed interruption processing sections and provides the processing results to a PWM pulse pattern generating section 14 thus generating pulses such as 9 pulse or 15 pulse. |
