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- W81818622 abstract "Abstract : The purpose of this electrohydraulic pulse motor (EHPM) technology-development project was to investigate feasibility and applicability and demonstrate capability of the EHPM concept for mating the power of hydraulics with the 'intelligence' of the digital computer for use in future aircraft utility systems. Recent dramatic developments in electronic circuit manufacturing necessitates the review of control concepts for the purpose of redefining the optimum mix of technologies. The significant reduction in cost, size, and weight and increase in reliability of digital computers offers the potential for performing the bulk of control functions within the electronic circuit in lieu of the hydraulic circuit. The EHPM concept is highly compatible with this concept, but existing units are used in machine tools and are not configured to achieve maximum power and minimum weight as needed for aircraft use. In this program the designs of EHPM's for aircraft use was investigated; an EHPM was designed and constructed using an aircraft type hydraulic motor; an input system consisting of a micro computer, an interface board, input and output position encoders, an electric pulse motor (EPM) driver, and a software program was designed and constructed; the EHPM and the input system were tested as components and as a system; the system was used to control the C-5 iron bird flap system with simulated loading; the EHPM unit was subjected to a durability test; and a survey of various aircraft subsystems where the EHPM could be a viable alternative was accomplished." @default.
- W81818622 created "2016-06-24" @default.
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- W81818622 date "1977-05-01" @default.
- W81818622 modified "2023-09-24" @default.
- W81818622 title "Investigation of Electro-Hydraulic Pulse Motors for Aircraft Utility Functions." @default.
- W81818622 hasPublicationYear "1977" @default.
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