Amplitude detection method and amplitude detection device for sensorless high-frequency impedance tracking algorithms

摘要

A control system for an electric motor with an inverter for supplying power to an electric motor, a control device for controlling the inverter and a first motor speed control block in the control device, which feeds a high-frequency signal into the electric motor to determine the speed and position of the electric motor wherein the first motor speed control block includes a trimmed filter of the sliding means to determine the magnitude of the high frequency current in the electric motor.