In the later years, there has been an increased focus on new valve types, which yield the possibility to do Separate Meter-In Separate Meter-Out (SMISMO) control. This includes both digital valves, but proportional valves with separate metering spools and build in pressure sensors are also emerging. The possibility to independently control the meter-in and meter-out side not only increase the functionality of the system, but also opens up for better performance and/or lowered energy consumption. The focus of the current paper is therefore on investigation and comparison of what may be obtained using multivariable control strategies for SMISMO control of a single axis hydraulic system with a differential cylinder, when not taking other measures to improve performance. The paper first presents an experimentally verified model of the system considered, from which a linear model is derived. Based on the model, the control strategies are discussed and several H∞ controllers are designed, for which both simulation and experimental results are presented. The controllers are evaluated with regard to performance and robustness and compared to a simple SISO control. Based on the findings, the possibilities and limitations of the approach and the different controllers are outlined and discussed.
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ASME/BATH 2013 Symposium on Fluid Power and Motion Control
October 6–9, 2013
Sarasota, Florida, USA
Conference Sponsors:
- Fluid Power Systems and Technology Division
ISBN:
978-0-7918-5608-6
PROCEEDINGS PAPER
Investigation and Comparison of Separate Meter-In Separate Meter-Out Control Strategies Available to Purchase
Henrik C. Pedersen,
Henrik C. Pedersen
Aalborg University, Aalborg East, Denmark
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Torben O. Andersen,
Torben O. Andersen
Aalborg University, Aalborg East, Denmark
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Tobias Skouboe,
Tobias Skouboe
Aalborg University, Aalborg East, Denmark
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Morten S. Jacobsen
Morten S. Jacobsen
Aalborg University, Aalborg East, Denmark
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Henrik C. Pedersen
Aalborg University, Aalborg East, Denmark
Torben O. Andersen
Aalborg University, Aalborg East, Denmark
Tobias Skouboe
Aalborg University, Aalborg East, Denmark
Morten S. Jacobsen
Aalborg University, Aalborg East, Denmark
Paper No:
FPMC2013-4480, V001T01A047; 10 pages
Published Online:
February 26, 2014
Citation
Pedersen, HC, Andersen, TO, Skouboe, T, & Jacobsen, MS. "Investigation and Comparison of Separate Meter-In Separate Meter-Out Control Strategies." Proceedings of the ASME/BATH 2013 Symposium on Fluid Power and Motion Control. ASME/BATH 2013 Symposium on Fluid Power and Motion Control. Sarasota, Florida, USA. October 6–9, 2013. V001T01A047. ASME. https://doi.org/10.1115/FPMC2013-4480
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