Original scientific paper

Rotational speed observation of a metallurgical lifting motor based on the delta operator

L. L. Meng ; North China University of Science and Technology, Heibei, Tangshan, China *
Z. Y. Zhang ; North China University of Science and Technology, Heibei, Tangshan, China
S. J. Liu ; North China University of Science and Technology, Heibei, Tangshan, China
H. Z. Zhao ; North China University of Science and Technology, Heibei, Tangshan, China
Y. L. Zhang ; North China University of Science and Technology, Heibei, Tangshan, China

* Corresponding author.

Abstract

In metallurgical and mining applications, it is not easy to install speed sensors, so the speed of the lifting motor is usually obtained using a speed observer. To solve the instability problem of traditional speed observers in practical applications when the sampling period is reduced after discretization based on shift operators, a new type of speed observer for discrete-time systems is analyzed and designed. The speed observer introduces the Delta operator, which improves the problem of unstable observation data caused by high-frequency sampling in traditional speed observers. And by establishing a motor speed observation system through simulation, the correctness of the conclusion was verified.

Keywords

speed observer; permanent magnet synchronous motor; delta operator; metallurgical lifting motor

Hrčak ID:

319866

URI

https://hrcak.srce.hr/319866

Publication date:

1.1.2025.

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