Power plants – Pressure fluid source and motor – Control by independently operated punch card – tape – digital...
Patent
1988-03-07
1989-03-14
Wayner, William E.
Power plants
Pressure fluid source and motor
Control by independently operated punch card, tape, digital...
60420, 34082506, F16D 3100
Patent
active
048115614
ABSTRACT:
An electrohydraulic system includes a plurality of electrohydraulic devices individually controlled by microprocessor-based control electronics. The device controllers are connected in common by a bidirectional serial data bus to a master controller for coordinating operation of the various devices. Internal programming within the master controller establishes a repetitive time-sequence of windows for communications with the various device controllers for downloading control signals and parameters, and for uploading data indicative of system status and operation. The various device controllers include internal programming for operating the associated hydraulic devices as a function of control signals and parameters received from the master controller. Pseudo-devices are also connected to the bus for time-division multiplexed communication with the master controller and for performing overall system coordination and analysis.
REFERENCES:
patent: 4091361 (1978-05-01), Eichelberger et al.
patent: 4212078 (1980-07-01), Games et al.
patent: 4454509 (1984-06-01), Buennagel et al.
Edwards Thomas L.
El-Ibiary Yehia M.
Gunda Rajamouli
Leemhuis Richard S.
Phillips Fred H.
Vickers Incorporated
Wayner William E.
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