[특허]Electronic controller for a modulating valve

[미국특허] Electronic controller for a modulating valve 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F16K-031/04
출원번호	US-0799709 (1997-02-13)
발명자 / 주소	Stege Daniel K.
출원인 / 주소	Erie Manufacturing Company
대리인 / 주소	Martin
인용정보	피인용 횟수 : 15 인용 특허 : 21

초록 ▼

A valve control circuit is disclosed for operating a modulating valve which can be operated between a completely open and a completely closed position. The modulating valve control circuit includes a microcontroller which receives an input signal from an external temperature controller. The microcontroller monitors and controls the position of the modulating valve by first determining the number of rotations of the bi-directional driving motor required to move the valve from a completely open to a completely closed position. After determining the number of rotations for a complete valve stroke, the microcontroller positions the valve stem in the correct position according to the input setpoint as compared to an input range. The microcontroller positions the valve stem in direct relation to the proportion of the input setpoint signal with respect to the range desired. The modulating valve control circuit also includes a solenoid control circuit which can be operated to engage and disengage a solenoid clutch, such that the valve can include a return spring.

대표청구항 ▼

[ I claim:] [7.] A method of controlling the position of a valve plug in a modulating valve including a bi-directional motor, the modulating valve including a valve plug operable between a completely open and a completely closed position, the method comprising the steps of:initially calibrating the valve by counting the number of revolutions of the bi-directional motor required to move the valve plug between the completely closed to the completely open position;storing the number of revolutions in a microcontroller as a valve stroke count;assigning a current position count based on the current position of the valve plug between the completely open and the completely closed position;inputting an upper and a lower setpoint limit to the microcontroller, the upper and lower reference limits defining a setpoint range;supplying a setpoint signal to the microcontroller, the setpoint signal being between the upper and lower setpoint limits;determining the ratio of the setpoint signal to the setpoint range;comparing the current position count to the ratio of the setpoint signal to the setpoint range to generate a position error;operating the bi-directional motor to move the valve plug in a direction based on the position error;counting the number of revolutions of the bi-directional motor to update the current position count; andstopping the bi-directional motor when the current position count approximately equals the ratio of the setpoint signal to the setpoint range.

이 특허에 인용된 특허 (21) 인용/피인용 타임라인 분석

Frew James E., Apparatus for cycling motor-operated valves.
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Brophey Robert W. (1134 Upton Ave. North Minneapolis MN 55411) Kadwell Robert J. (1111 Sheridan Ave. North Minneapolis MN 55411), Controlling cone of depression in a well by microprocessor control of modulating valve.
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Bleibinhaus Joerg,DEX ; Kempkes Joachim,DEX, Electric servo-drive.
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Meades ; Jr. Flavious J. (309 Fairview Dr. LaPlace LA 70068) Meades ; III Flavious J. (2112 Cartier Dr. LaPlace LA 70068), Electrical control for hydraulic valves.
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Jocz Armin E. (Ada MI), Electronically controlled valve actuator.
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Ezell Larry O. (Clinton MS) Schmid John (Jackson MS) Tovey Peter (Jackson MS), Failsafe electrohydraulic control system for variable displacement pump.
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Terry Paul E. (23844 Via Jacara Valencia CA 91355), Flow sensitive fluid shutoff safety device.
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Schaufeld Jerome J. (Framingham MA), Mechanism for operating multiple air flow control valves.
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Boyles Jackie R. (Sugarland TX) Porter Joseph L. (New Iberia LA) Richter ; Jr. Albert P. (Houston TX), Method and apparatus for remotely controlling a rotary valve or the like.
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Migda Kenneth F. (Sterling Heights MI), Method and system for controlling a machine tool such as a turning machine.
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Hartfiel Johannes (Neueichwaldstrasse 5 6800 Mannheim 31 DEX) Schmitt Manfred (Johann-Casimier-Str. 17 6701 Friedelsheim DEX), Method of and apparatus for control of saftey valves.
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Brooks Boyd P. (Los Gatos CA) Lee Robert A. S. (Tewksbury MA), Microprocessor-based control and diagnostic system for motor operated valves.
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Lee Robert A. S. (Tewksbury MA), Microprocessor-based control and diagnostic system for motor operated valves.
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Wohld Peter R. (2 S. 580 Ashley Dr. Glen Ellyn IL 60137), Motor-operated valve evaluation unit.
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Arcella Frank G. (Bethel Park Borough PA) Bednar Fred H. (Shaler Township ; Allegheny County PA) Schreurs Jan J. (Murrysville PA) Forker James M. (Murrysville PA), Online valve diagnostic monitoring system.
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Mutchler John H. (Enfield CT) Jaeger Timothy P. (North Granby CT) Matt Richard J. (Avon CT) Farver Theodore B. (Windsor Locks CT), Pneumatic operated valve data acquisitioner.
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Emery James A. (Stafford GB2), Sealed valve and control means therefor.
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Hasegawa Yoshihiko (Hyogo JPX), Self-regulated pressure control valve.
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Tootell Terence S. (Windsor CAX) Wilson Keith G. (Belle River MI CAX) Shoptaw David R. (Livonia MI), Servo valve analyzing system and method.
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Haines Lawrence A. (1000 S. 1000 East Mapleton UT 84664), Unitary fluid flow production and control system.
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Arnemann Scott (Rolling Meadows IL) Ferrar Scott (Wheeling IL), Valve operator.
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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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[미국특허] Electronic controller for a modulating valve 원문보기