Method and apparatus for adaptive ice control

Details Method and apparatus for adaptive ice control Method and apparatus for adaptive ice control

1992-05-11

1993-04-20

Corbin, David H.

Hydraulic and earth engineering

Fluid control, treatment, or containment

Floatable matter containment

405 62, E02B 1502

Patent

active

052036430

ABSTRACT:
A method and controls for cyclical operation of ice reducers in open bodies of water. An ambient condition transducer provides an ambient signal representing the amplitude of a condition affecting ice formation. A timer cyclically produces a ramp signal, thereby setting the frequency of cycles for operation of a water movement device. In each cycle a comparator compares the relative amplitudes represented by the ambient and ramp signals and gates power to said device upon a change in the sign of the difference between said amplitudes. Thus the duration of gated power in each cycle is a function of the ambient condition.

REFERENCES:
patent: 3109288 (1963-11-01), Gross
patent: 4247261 (1981-01-01), Springtson
patent: 4279537 (1981-07-01), Tweedy
patent: 4666335 (1987-05-01), Jones
patent: 5017093 (1991-05-01), Naes

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