Analysis of an controller design for an electro-hydraulic servo pressure regulator

Henrik C. Pedersen, Torben Ole Andersen, A. M. Madsen, M. Dahl, B.K. Nielsen, Søren Stubkier

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearch

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Abstract

Mobile hydraulics is in a transition phase, where electronic sensors and digital signal processors are starting to become standard on a high number of machines, hereby replacing hydraulic pilot lines and oering new possibilities with regard to both control and feasibility. For controlling some of the existing hydraulic components there are, however, still a need for being able to generate a hydraulic pilot pressure, as e.g. almost all open-circuit pumps are hydraulically controlled. The focus of the current paper is therefore on the analysis and controller design an electro-hydraulic servo pressure regulator, which generates a hydraulic LS-pressure based on an electrical reference, hereby synergistically integrating knowledge from all parts of the mechatronics area.

The servo pressure regulator is used to generate the LS-signal for a variable displacement pump, and the paper rst presents the considered system and an experimentally veried model of this. A linearized model is then presented, which comprise the basis for a stability and sensitivity analysis of the system. Based on the results of the analysis, a control strategy is designed in combination with optimisation of the mechanical design to generate a controlled leakage  ow that aids in stabilising the system. The robustness of the system is then discussed in relation to dierent pilot line volumes and pump dynamics. Finally experimental results are presented, where the performance is compared to that of a similar hydraulic reference system, which has been the basis for the specification of performance requirements.

Original languageEnglish
Title of host publicationProceedings of the 10th International Workshop on Research and Education in Mechatronics, REM2009
Number of pages8
PublisherUniversity of Strathclyde
Publication date2009
Publication statusPublished - 2009
EventInternational Workshop on Research and Education in Mechatronics - Glasgow, United Kingdom
Duration: 10 Sep 200911 Sep 2009
Conference number: 10

Conference

ConferenceInternational Workshop on Research and Education in Mechatronics
Number10
CountryUnited Kingdom
CityGlasgow
Period10/09/200911/09/2009

Fingerprint

Pressure regulators
Hydraulics
Controllers
Pumps
Mechatronics
Digital signal processors
Sensitivity analysis
Specifications
Networks (circuits)
Sensors

Keywords

  • Hydraulics
  • Mechanics
  • Electronics
  • Controller Design
  • Modelling
  • Stability

Cite this

Pedersen, H. C., Andersen, T. O., Madsen, A. M., Dahl, M., Nielsen, B. K., & Stubkier, S. (2009). Analysis of an controller design for an electro-hydraulic servo pressure regulator. In Proceedings of the 10th International Workshop on Research and Education in Mechatronics, REM2009 University of Strathclyde.
Pedersen, Henrik C. ; Andersen, Torben Ole ; Madsen, A. M. ; Dahl, M. ; Nielsen, B.K. ; Stubkier, Søren. / Analysis of an controller design for an electro-hydraulic servo pressure regulator. Proceedings of the 10th International Workshop on Research and Education in Mechatronics, REM2009. University of Strathclyde, 2009.
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abstract = "Mobile hydraulics is in a transition phase, where electronic sensors and digital signal processors are starting to become standard on a high number of machines, hereby replacing hydraulic pilot lines and oering new possibilities with regard to both control and feasibility. For controlling some of the existing hydraulic components there are, however, still a need for being able to generate a hydraulic pilot pressure, as e.g. almost all open-circuit pumps are hydraulically controlled. The focus of the current paper is therefore on the analysis and controller design an electro-hydraulic servo pressure regulator, which generates a hydraulic LS-pressure based on an electrical reference, hereby synergistically integrating knowledge from all parts of the mechatronics area.The servo pressure regulator is used to generate the LS-signal for a variable displacement pump, and the paper rst presents the considered system and an experimentally veried model of this. A linearized model is then presented, which comprise the basis for a stability and sensitivity analysis of the system. Based on the results of the analysis, a control strategy is designed in combination with optimisation of the mechanical design to generate a controlled leakage  ow that aids in stabilising the system. The robustness of the system is then discussed in relation to dierent pilot line volumes and pump dynamics. Finally experimental results are presented, where the performance is compared to that of a similar hydraulic reference system, which has been the basis for the specification of performance requirements.",
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Pedersen, HC, Andersen, TO, Madsen, AM, Dahl, M, Nielsen, BK & Stubkier, S 2009, Analysis of an controller design for an electro-hydraulic servo pressure regulator. in Proceedings of the 10th International Workshop on Research and Education in Mechatronics, REM2009. University of Strathclyde, International Workshop on Research and Education in Mechatronics, Glasgow, United Kingdom, 10/09/2009.

Analysis of an controller design for an electro-hydraulic servo pressure regulator. / Pedersen, Henrik C.; Andersen, Torben Ole; Madsen, A. M.; Dahl, M.; Nielsen, B.K.; Stubkier, Søren.

Proceedings of the 10th International Workshop on Research and Education in Mechatronics, REM2009. University of Strathclyde, 2009.

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearch

TY - GEN

T1 - Analysis of an controller design for an electro-hydraulic servo pressure regulator

AU - Pedersen, Henrik C.

AU - Andersen, Torben Ole

AU - Madsen, A. M.

AU - Dahl, M.

AU - Nielsen, B.K.

AU - Stubkier, Søren

PY - 2009

Y1 - 2009

N2 - Mobile hydraulics is in a transition phase, where electronic sensors and digital signal processors are starting to become standard on a high number of machines, hereby replacing hydraulic pilot lines and oering new possibilities with regard to both control and feasibility. For controlling some of the existing hydraulic components there are, however, still a need for being able to generate a hydraulic pilot pressure, as e.g. almost all open-circuit pumps are hydraulically controlled. The focus of the current paper is therefore on the analysis and controller design an electro-hydraulic servo pressure regulator, which generates a hydraulic LS-pressure based on an electrical reference, hereby synergistically integrating knowledge from all parts of the mechatronics area.The servo pressure regulator is used to generate the LS-signal for a variable displacement pump, and the paper rst presents the considered system and an experimentally veried model of this. A linearized model is then presented, which comprise the basis for a stability and sensitivity analysis of the system. Based on the results of the analysis, a control strategy is designed in combination with optimisation of the mechanical design to generate a controlled leakage  ow that aids in stabilising the system. The robustness of the system is then discussed in relation to dierent pilot line volumes and pump dynamics. Finally experimental results are presented, where the performance is compared to that of a similar hydraulic reference system, which has been the basis for the specification of performance requirements.

AB - Mobile hydraulics is in a transition phase, where electronic sensors and digital signal processors are starting to become standard on a high number of machines, hereby replacing hydraulic pilot lines and oering new possibilities with regard to both control and feasibility. For controlling some of the existing hydraulic components there are, however, still a need for being able to generate a hydraulic pilot pressure, as e.g. almost all open-circuit pumps are hydraulically controlled. The focus of the current paper is therefore on the analysis and controller design an electro-hydraulic servo pressure regulator, which generates a hydraulic LS-pressure based on an electrical reference, hereby synergistically integrating knowledge from all parts of the mechatronics area.The servo pressure regulator is used to generate the LS-signal for a variable displacement pump, and the paper rst presents the considered system and an experimentally veried model of this. A linearized model is then presented, which comprise the basis for a stability and sensitivity analysis of the system. Based on the results of the analysis, a control strategy is designed in combination with optimisation of the mechanical design to generate a controlled leakage  ow that aids in stabilising the system. The robustness of the system is then discussed in relation to dierent pilot line volumes and pump dynamics. Finally experimental results are presented, where the performance is compared to that of a similar hydraulic reference system, which has been the basis for the specification of performance requirements.

KW - Hydraulics

KW - Mechanics

KW - Electronics

KW - Controller Design

KW - Modelling

KW - Stability

M3 - Article in proceeding

BT - Proceedings of the 10th International Workshop on Research and Education in Mechatronics, REM2009

PB - University of Strathclyde

ER -

Pedersen HC, Andersen TO, Madsen AM, Dahl M, Nielsen BK, Stubkier S. Analysis of an controller design for an electro-hydraulic servo pressure regulator. In Proceedings of the 10th International Workshop on Research and Education in Mechatronics, REM2009. University of Strathclyde. 2009