Publication detail

Frictionless Bellows Unit Connected with the Magnetorheological Valve

MACHÁČEK, O. KUBÍK, M. MAZŮREK, I. STRECKER, Z. ROUPEC, J.

Original Title

Frictionless Bellows Unit Connected with the Magnetorheological Valve

English Title

Frictionless Bellows Unit Connected with the Magnetorheological Valve

Type

conference paper

Language

en

Original Abstract

Dynamic range is one of the key parameter for effective control of magneto-rheological (MR) dampers in suspensions controlled by semi-active algorithms. This article discusses dynamic range increase ensured by elimination of friction in a device which forces fluid to flow through MR valve. The friction affects a force velocity dependency. It is a part of force that cannot be controlled. Therefore friction is unwanted in MR dampers or valves. This article describes the two versions of volumetric unit with MR valve. First, the fluid was forced by hydraulic cylinder with high friction. In order to eliminate friction, a unique volumetric unit was designed and used instead of hydraulic cylinder. It uses elastic metal bellows which can be sealed by static seals, therefore there is no contact between moving parts. Measurement of force velocity dependency was carried out for original and new volumetric unit connected with the same MR valve. The results showed that the frictionless unit exhibits a significant improvement of dynamic range for the whole range of velocities compared to original piston unit. That has positive impact to efficiency of vibration elimination of MR valve using semi-active control.

English abstract

Dynamic range is one of the key parameter for effective control of magneto-rheological (MR) dampers in suspensions controlled by semi-active algorithms. This article discusses dynamic range increase ensured by elimination of friction in a device which forces fluid to flow through MR valve. The friction affects a force velocity dependency. It is a part of force that cannot be controlled. Therefore friction is unwanted in MR dampers or valves. This article describes the two versions of volumetric unit with MR valve. First, the fluid was forced by hydraulic cylinder with high friction. In order to eliminate friction, a unique volumetric unit was designed and used instead of hydraulic cylinder. It uses elastic metal bellows which can be sealed by static seals, therefore there is no contact between moving parts. Measurement of force velocity dependency was carried out for original and new volumetric unit connected with the same MR valve. The results showed that the frictionless unit exhibits a significant improvement of dynamic range for the whole range of velocities compared to original piston unit. That has positive impact to efficiency of vibration elimination of MR valve using semi-active control.

Keywords

Vibration, Dynamic range, Magneto-rheological valve, Frictionless, Bellows

Released

10.05.2016

Publisher

Institute of Thermomechanics Academy of Sciences of the Czech Republic

Location

Praha

ISBN

978-80-87012-59-8

Book

ENGINEERING MECHANICS 2016

Edition

First edition, 2016

Pages from

354

Pages to

357

Pages count

4

BibTex


@inproceedings{BUT125110,
  author="Ondřej {Macháček} and Michal {Kubík} and Ivan {Mazůrek} and Zbyněk {Strecker} and Jakub {Roupec}",
  title="Frictionless Bellows Unit Connected with the Magnetorheological Valve",
  annote="Dynamic range is one of the key parameter for effective control of magneto-rheological (MR) dampers in suspensions controlled by semi-active algorithms. This article discusses dynamic range increase ensured by elimination of friction in a device which forces fluid to flow through MR valve. The friction affects a force velocity dependency. It is a part of force that cannot be controlled. Therefore friction is unwanted in MR dampers or valves. This article describes the two versions of volumetric unit with MR valve. First, the fluid was forced by hydraulic cylinder with high friction. In order to eliminate friction, a unique volumetric unit was designed and used instead of hydraulic cylinder. It uses elastic metal bellows which can be sealed by static seals, therefore there is no contact between moving parts. Measurement of force velocity dependency was carried out for original and new volumetric unit connected with the same MR valve. The results showed that the frictionless unit exhibits a significant improvement of dynamic range for the whole range of velocities compared to original piston unit. That has positive impact to efficiency of vibration elimination of MR valve using semi-active control.",
  address="Institute of Thermomechanics Academy of Sciences of the Czech Republic",
  booktitle="ENGINEERING MECHANICS 2016",
  chapter="125110",
  edition="First edition, 2016",
  howpublished="print",
  institution="Institute of Thermomechanics Academy of Sciences of the Czech Republic",
  year="2016",
  month="may",
  pages="354--357",
  publisher="Institute of Thermomechanics Academy of Sciences of the Czech Republic",
  type="conference paper"
}