A device for generation of nominal current values in servo drive systems for brushless permanently magnetized synchronous motors

摘要

A circuit device for generating nominal current values in a servo drive system of a brushless permanently magnetized three-phase synchronous motor for regulating the speed or position of the motor (M). The motor has a position indicator (L) providing a three-phase output signal (IA, IB, IC) via its outputs. Multiplier circuits (M1, M2, M3) are each connected to the outputs of the position indicator (L) with one of their inputs. A predetermined nominal current value (lv) is fed to the second of the inputs of the multiplier circuits and the desired nominal current values are obtained via the outputs of the multiplier circuits.