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Electric hydrostatic actuation - modular building blocks for industrial applications
Achim Helbig, Moog GmbH, Germany
Christoph Boes, Moog GmbH
Electro Hydrostatic Actuators (EHA) are emerging as a viable option for industrial
machine builders as the design combines the best of both electro-mechanical and
electro-hydraulic technologies. The EHA is a highly integrated, compact alternative to
traditional hydraulic solutions. Automation engineers moving toward electro-mechanical
actuation in pursuit of energy efficiency and environmental cleanliness, will find an EHA
an attractive option for high force density actuators.
This paper will address the factors to consider when assessing an industrial machines
application suitability for this latest innovation in actuation. It describes principal base
circuits, a concept for EHA building blocks and a realized pilot application as well as
challenges on actuator and components level.