Diagnostics in electric drive systems

Project goal

Simulation, implementation and optimization of a measurement function within a cascade control for medical drive technology to determine resonance and absorber frequencies.

The functional range of a low-cost control system is to be extended by a special measurement function that can be used to determine the frequency behavior of a mechatronic drive train. The control concept used here is the approach of field-oriented control of a permanent-magnet excited synchronous machine. Pseudo noise binary signals (PRBS) are usually used to generate the corresponding test signal. The development of the automated measurement algorithm takes place in a first step with the help of the numerical calculation program Matlab/Simulink on a simulative basis. The advantage of this is that rapid changes to the structure of the function and its behavior can be reproduced in the model on a one-to-one basis. Occurring disturbances, which are caused by the real behavior of the mechanics, can be neglected for the time being.

After successfully creating the measurement function on a simulative basis and analytically verifying the ideal behavior, the task is to implement it on the low-cost control system and validate it using a specially designed engine test bench. Following successful validation, the measurement procedure is to be examined under real conditions on a mechatronic powertrain with regard to its informative value.

The research project is being carried out at the Innovative Learning Center of the OTH-Amberg-Weiden at Siemens Healthcare GmbH in Kemnath as part of a Master-of-Applied-Research project.

Project duration

March 2022 to September 2023 (19 months)