Original scientific paper

https://doi.org/10.21278/TOF.44204

Electrohydraulic Drive with a Flow Valve Controlled by a Permanent Magnet Synchronous Motor

Dominik Rybarczyk orcid.org/0000-0002-6715-5045 ; Institute of Mechanical Technology, Poznan University of Technology, Poznań, Poland
Andrzej Milecki ; Institute of Mechanical Technology, Poznan University of Technology, Poznań, Poland

Abstract

This article presents an electrohydraulic drive with a new electrohydraulic flow valve controlled by a Permanent Magnet Synchronous Motor (PMSM), designed and built by the authors. In comparison to a valve with a proportional electromagnet, the use of a PMSM has enabled significant improvements in the key characteristics of the valve. A theoretical framework and a model of a PMSM are presented; subsequently, a valve with this motor is proposed and tested. Step responses of the real valve and its static and frequency characteristics are measured. The characteristics obtained in the simulation are compared with those obtained in the laboratory investigations, showing their good compliance. The obtained characteristics of the new valve are better than those of a typical proportional valve. The new valve is applied in an electrohydraulic linear actuator. For positioning tasks, two types of controllers are applied and compared: a proportional-derivative controller and a fractional order proportional-derivative controller showing satisfactory parameters.

Keywords

electrohydraulic valve; modelling, permanent magnet synchronous motor; control

Hrčak ID:

238479

URI

https://hrcak.srce.hr/238479

Publication date:

18.6.2020.

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