An Accurate Auto-Tuning Procedure for Encoderless AC Motor Drives in Industrial Environments

Authors

  • Andreas R. Weber Graz University of Technology, Graz
  • Joachim Weissbacher Bernecker + Rainer Industrie Elektronik Ges.m.b.H, Eggelsberg
  • Gerald Steiner Graz University of Technology, Graz
  • Martin Horn Klagenfurt University, Klagenfurt

Abstract

Modern ac motor drives are based on field
oriented vector control with feedback and feedforward
control units. The feedback control unit for position and
speed consists of two cascaded standard PI-controllers.
These controllers require information of the position and
the derivative of the position, respectively. Typically a shaft
encoder provides this information but more often a position
observer is used instead. The feedforward control unit uses
the set position trajectory in combination with mechanical
parameters and essentially imposes the overall dynamics.
This work presents a new method for self-commissioning of
speed controller, position controller and feedforward
control unit for drives without a shaft encoder. Performance
and feasibility of the proposed method are demonstrated by
experimental results.

Author Biographies

Andreas R. Weber, Graz University of Technology, Graz

Institute of Electrical Measurement and Measurement Signal Processing

Gerald Steiner, Graz University of Technology, Graz

Institute of Electrical Measurement and Measurement Signal Processing

Martin Horn, Klagenfurt University, Klagenfurt

Institute of Smart System-Technologies, Control & Mechatronic Systems Group

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Published

2020-03-30

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Section

Articles