Positioner having user-adjustable dynamic response

Details Positioner having user-adjustable dynamic response Positioner having user-adjustable dynamic response

1982-04-23

1985-04-09

Maslousky, Paul E.

Motors: expansible chamber type

Working member position feedback to motive fluid control

With main valve position feedback to pilot valve

91387, 137 84, F15B 1316

Patent

active

045094039

ABSTRACT:
A positioner-actuator control system includes a pair of relays and a pivotally mounted beam for operation thereof in response to a pneumatic control signal. A summing beam has forces applied to it from an input signal, a controlled device position lever, a zero adjustment and a damping mechanism comprising a pair of flat springs attached to the relay beam and to the summing beam. A clamp is movable along the flat springs to permit user adjustment of the damping force.

REFERENCES:
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patent: 2484557 (1949-10-01), Eckman
patent: 2536198 (1951-01-01), Matner et al.
patent: 2789543 (1957-04-01), Popowsky
patent: 2793540 (1957-05-01), Cronk
patent: 2989950 (1961-06-01), Lockman
patent: 3003475 (1961-10-01), Rouvalis
patent: 3084550 (1963-04-01), Bowditeh
patent: 3101031 (1963-08-01), Crossley, Jr.
patent: 3101650 (1963-08-01), Blanton
patent: 3565391 (1971-02-01), Zannini
patent: 3693501 (1972-09-01), Ward et al.
patent: 3915062 (1975-10-01), Westfall et al.

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