Electro-hydraulic regulating drive and a fast-switching...

Details Electro-hydraulic regulating drive and a fast-switching... Electro-hydraulic regulating drive and a fast-switching...

F - Mech Eng,Light,Heat,Weapons

15

B

342/22.1, 138/78

F15B 9/17 (2006.01) B64C 13/40 (2006.01)

Patent

CA 1151979

ABSTRACT OF THE DISCLOSURE An electro-hydraulic regulating drive particularly for control mechanisms in aircraft. The regulating drive includes a regulating piston and cylinder and rapidly-operable switching valves for the positioning of the piston in the cylinder by supplying discrete volumes of operating fluid thereto. Switching pulses are applied to the valves by a computer. A sensor responsive to each activation of the switching valves applies an answering pulse to the computer and so a breakdown can immediately be recognised. The sensor may be responsive to changes in pressure and/or flow and/or sound conducted by solid components situated between the valves and the regulating cylinder.

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