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THE HYDRAULIC INFINITE LINEAR ACTUATOR APPLIED TO ELEVATORS IN MID-RISE BUILDINGS
Saab Aeronaut, Linkoping, Sweden.
Linköping University, Department of Management and Engineering, Fluid and Mechatronic Systems. Linköping University, Faculty of Science & Engineering.
Linköping University, Department of Management and Engineering, Fluid and Mechatronic Systems. Linköping University, Faculty of Science & Engineering.ORCID iD: 0000-0001-5892-6410
Linköping University, Department of Management and Engineering, Fluid and Mechatronic Systems. Linköping University, Faculty of Science & Engineering.ORCID iD: 0000-0002-2315-0680
2018 (English)In: PROCEEDINGS OF THE BATH/ASME SYMPOSIUM ON FLUID POWER AND MOTION CONTROL, 2018, AMER SOC MECHANICAL ENGINEERS , 2018, article id V001T01A030Conference paper, Published paper (Refereed)
Abstract [en]

Hydraulic elevators with conventional long -stroke hydraulic cylinders are limited for use in low-rise buildings, up to five floors, due to low hydraulic stiffness, low natural frequency, low hydraulic pressure and large oil volume. With a new hydraulic actuation technology jointly invented at Linkoping University and SAAB named the Hydraulic Infinite Linear Hydraulic Actuator (HILA), these short -comings for hydraulic actuators can be reduced and hydraulic elevators can be offered for mid rise buildings. The HILA technology provides long strokes, high system pressure, compactness and small chamber volumes. The actuator has a higher stiffness and a higher natural frequency compared to conventional hydraulic cylinders. The higher system pressure allows for an even more compact system design, with lower flow levels and a smaller reservoir. The HILA technology combines two short -stroke cylinders with two engaging and disengaging clamping mechanisms into one actuator with long stroke length. The motion of each single short stroke piston linked together by the clamping mechanisms creates the motion of the piston rod. In this way the two pistons are moving along the rod in a kind of rope climbing motion. The challenge is to implement a control system which can provide a smooth motion without unacceptable jerk at load shift as seen with ordinary directional valves. Earlier research work on HILA technology has shown that a control system with fast servo valves can fulfil these requirements. This study shows promising results from simulation analysis combined with optimization techniques, using slightly modified standard directional hydraulic valves.

Place, publisher, year, edition, pages
AMER SOC MECHANICAL ENGINEERS , 2018. article id V001T01A030
Series
Proceedings of the ASME-BATH Symposium on Fluid Power and Motion Control, ISSN 2475-7004
National Category
Other Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:liu:diva-155961DOI: 10.1115/FPMC2018-8862ISI: 000460491500030ISBN: 978-0-7918-5196-8 (print)OAI: oai:DiVA.org:liu-155961DiVA, id: diva2:1301031
Conference
BATH/ASME Symposium on Fluid Power and Motion Control
Note

Funding Agencies|Saab AB; Hydroware AB; Swedish Governmental Agency for Innovation Systems (Vinnova)

Available from: 2019-04-01 Created: 2019-04-01 Last updated: 2019-04-01

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