| 摘要 |
A current corresp. to a theoretical value is fed to one input of a differential amplifier via a further amplifier. The other input of the differential amplifier is fed via yet a further amplifier with an actual value corresp. to the currents ruling in the motor at various times. To the differential amplifier output is connected an integrator, which in turn is connected to a voltage-to-delta modulator. - Pulse signals from this modulator are fed via a micro-processor to a power electronic system, the processor monitoring and comparing different situation signals from the motor so that it can provide control signals to the two amplifiers. The micro-processor evaluates the pulse signals in relation to the monitored values, and corrects the pulse so that their duration is not less or greater than the min. or max. requirement of the power electronic functions. |
