A NOVEL MODEL FOR OPTIMIZED DEVELOPMENT AND APPLICATION OF SWITCHING VALVES IN CLOSED LOOP CONTROL

Authors

  • Ingo Schepers Bosch Rexroth AG, Partensteiner Str. 23, 97816 Lohr a. Main, Germany
  • David Schmitz Bosch Rexroth AG, Partensteiner Str. 23, 97816 Lohr a. Main, Germany
  • Daniel Weiler Bosch Rexroth AG, Partensteiner Str. 23, 97816 Lohr a. Main, Germany
  • Olaf Cochoy Bosch Rexroth AG, Partensteiner Str. 23, 97816 Lohr a. Main, Germany
  • Uwe Neumann Bosch Rexroth AG, Partensteiner Str. 23, 97816 Lohr a. Main, Germany

Keywords:

digital hydraulics, switching valves, dynamic model, dynamic mode, pulse width modulation (PWM), closed loop control, switching time, ballistic mode

Abstract

In this paper a novel and validated model to describe the dynamics of switching valves is presented and used to analyse the behaviour of switching valves. The paper starts with a brief discussion of the state of the art and the characteristics of switching valves, continuing with investigations of their dynamics, the development of the novel model and an analysis of the characteristics of switching valves based on the introduced model. The different operation modes which appear when fast switching control signals are applied are introduced and discussed. Additionally the application of the proposed model in closed loop simulations is pointed out and compared to state of the art models. It is demonstrated that the novel model offers a good trade-off between model accuracy and model complexity.

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Author Biographies

Ingo Schepers, Bosch Rexroth AG, Partensteiner Str. 23, 97816 Lohr a. Main, Germany

Ingo Schepers Ingo Schepers obtained his Diploma degree in mechanical engineering from Technical University Hamburg-Harburg in 2010. Since 2010 he is doing research for his PhD thesis at Bosch Rexroth in the fields of industrial electro-hydraulic controls.

David Schmitz, Bosch Rexroth AG, Partensteiner Str. 23, 97816 Lohr a. Main, Germany

David Schmitz David Schmitz received his Diploma degree in mechanical engineering from Karlsruhe Institute of Technology in 2009. Since 2010 he is doing research for his PhD thesis at Bosch Rexroth in the fields of mechatronics and hydraulic systems.

Daniel Weiler, Bosch Rexroth AG, Partensteiner Str. 23, 97816 Lohr a. Main, Germany

Daniel Weiler From 2005 to 2009 Daniel Weiler was a member of the research staff at the control theory and robotics laboratory at Technische Universität Darmstadt. At the same time, he was also a visiting scientist at the Honda Research Institute Europe, where he carried out his dissertation. Since 2009, he is a development engineer at Bosch Rexroth AG in Lohr, Germany.

Olaf Cochoy, Bosch Rexroth AG, Partensteiner Str. 23, 97816 Lohr a. Main, Germany

Olaf Cochoy Olaf Cochoy joined the fluid power industry in 2008 at Bosch Rexroth AG where he is currently head of the Innovation group in the product area Mobile Controls. He obtained his doctoral degree in Aircraft Systems Engineering at Hamburg University of Technology and his masters degree in Mechanical Engineering at University of Illinois at Chicago.

Uwe Neumann, Bosch Rexroth AG, Partensteiner Str. 23, 97816 Lohr a. Main, Germany

Uwe Neumann Uwe Neumann started his work in the fluid power industry in 2007 at Bosch Rexroth AG after completing his PhD at the Hamburg University of Technology in Aircraft Systems. Currently he serves as the head of Advanced Engineering in the Product Area Mobile Controls at Bosch Rexroth AG.

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Published

2011-11-01

How to Cite

Schepers, I., Schmitz, D., Weiler, D., Cochoy, O., & Neumann, U. (2011). A NOVEL MODEL FOR OPTIMIZED DEVELOPMENT AND APPLICATION OF SWITCHING VALVES IN CLOSED LOOP CONTROL. International Journal of Fluid Power, 12(3), 31–40. Retrieved from https://journals.riverpublishers.com/index.php/IJFP/article/view/461

Issue

2011: Vol 12 Iss 3

Section

Original Article