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Compact Electrohydraulic Actuator Powerpacks for Distributed Drives – Configuration, Controls and System Performance
Technical Paper
2002-01-1457
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Small electro-hydraulic actuators have started to replace systems with centralized hydraulic power supply in some areas. Therefore the most common systems with a variable speed electric motor in combination with a fixed-displacement pump and a constant speed motor with a variable displacement pump were compared using the load cycle of the aileron of a civil aircraft. For this load cycle the configuration with fixed displacement pump and the variable speed electric motor showed the same dynamic and a much better energetic performance than the variant with a constant speed motor and a variable displacement pump. The energy consumption could be reduced by 55 % using the motor speed as the control input. With a logic that changes the control input between motor speed and swashplate angle as a funktion of the actual motor speed the energy consumption could be reduced by another 24 %.
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Authors
Citation
Feldmann, D. and Kazmeier, B., "Compact Electrohydraulic Actuator Powerpacks for Distributed Drives – Configuration, Controls and System Performance," SAE Technical Paper 2002-01-1457, 2002, https://doi.org/10.4271/2002-01-1457.Also In
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