Valves and valve actuation – Electrically actuated valve – Remote or follow-up control system for electrical actuator
Patent
1990-03-29
1991-06-18
Rosenthal, Arnold
Valves and valve actuation
Electrically actuated valve
Remote or follow-up control system for electrical actuator
25112908, 25112905, F16K 3106, G05D 13044
Patent
active
050244175
ABSTRACT:
The invention relates to a control circuitry for a solenoid operated control valve. The invention provides for a simplified means to obtain a constant valve gain and thus a linear valve characteristic by stepwise varying the gain of the input signal to control the stroke of the valve piston. The non-linear valve gain is first measured to obtain gain correcting values which are stored in a table store corresponding to predetermined values of the input signal for controlling the valve. This input signal is delivered by a commercial CNC-control. The input signal is varied by the correcting means so that the input signal is increased in the zero-flow-range of the valve for example. Assuming that the pressure difference across the valve is constant there will be obtained a linear flow characteristic for the valve. The resolution of the corrected input value is responsive only to the resolution of the CNC input valve as the input value is continuously corrected by multiplication between its incremental steps.
REFERENCES:
patent: 4103695 (1978-08-01), Aono
patent: 4386626 (1983-06-01), Hehl
patent: 4714005 (1987-12-01), Leemhuis
Mannesmann Rexroth GmbH
Rosenthal Arnold
LandOfFree
Control circuitry for a solenoid operated control valve does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Control circuitry for a solenoid operated control valve, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Control circuitry for a solenoid operated control valve will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-141746