Floating actuator control system and method
원문보기
IPC분류정보
국가/구분 |
United States(US) Patent
등록
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국제특허분류(IPC7판) |
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출원번호 |
US-0427317
(2003-04-30)
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발명자
/ 주소 |
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출원인 / 주소 |
- Invensys Building Systems, Inc.
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대리인 / 주소 |
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인용정보 |
피인용 횟수 :
10 인용 특허 :
5 |
초록
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A system and method of providing floating actuator control is provided. This system and method receives input command signals from an actuator controller, and effectively integrates these signals until the controller has requested a large enough movement of the actuator that the actuator can actuall
A system and method of providing floating actuator control is provided. This system and method receives input command signals from an actuator controller, and effectively integrates these signals until the controller has requested a large enough movement of the actuator that the actuator can actually effectuate. At this point, the system and method drive the actuator to the commanded position. As a result, excessive mechanical wear in the actuator caused by small command signal perturbations and dither is reduced or eliminated.
대표청구항
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1. A method of controlling an actuator, comprising the steps of:receiving at least one of an actuator close command and an actuator open command from an external primary controller; accumulating information relating to a duration of the at least one of the actuator close command and the actuator ope
1. A method of controlling an actuator, comprising the steps of:receiving at least one of an actuator close command and an actuator open command from an external primary controller; accumulating information relating to a duration of the at least one of the actuator close command and the actuator open command; and delaying driving the actuator until the accumulated information exceeds a predetermined threshold. 2. The method of claim 1, wherein the step of driving the actuator when the accumulated information exceeds the predetermined threshold comprises the step of setting the predetermined threshold to a time value that provides an effective control response from the actuator.3. A method of controlling an actuator, comprising the steps of:receiving at least one of an actuator close command and an actuator open command from an external primary controller; accumulating information relating to a duration of the at least one of the actuator close command and the actuator open command; driving the actuator when the accumulated information exceeds a predetermined threshold; wherein the step of driving the actuator when the accumulated information exceeds the predetermined threshold comprises the step of setting the predetermined threshold to a time value that provides an effective control response from the actuator; and wherein the step of accumulating information relating to the duration of the at least one of the actuator close command and the actuator open command is processed a predetermined number of times per second, and wherein the step of accumulating information comprises the steps of increasing a count by an integer when one of the actuator close command and the actuator open command is received and decreasing the count by the integer when the other of the actuator close command and the actuator open command is received. 4. The method of claim 3, further comprising at least one of the steps of adding a count of opposite polarity of the count added during the actuator close command during the step of driving the actuator closed and adding a count of opposite polarity of the count added during the actuator open command during the step of driving the actuator open.5. The method of claim 4, further comprising the step of stopping the actuator when the count reaches zero.6. A method of controlling an actuator, comprising the steps of:receiving at least one of an actuator close command and an actuator open command from an external primary controller; accumulating information relating to a duration of the at least one of the actuator close command and the actuator open command; driving the actuator when the accumulated information exceeds a predetermined threshold; and further comprising the step of reducing the accumulated information during the step of driving. 7. A method of controlling an actuator, comprising the steps of:receiving at least one of an actuator close command and an actuator open command from an external primary controller; accumulating information relating to a duration of the at least one of the actuator close command and the actuator open command; driving the actuator when the accumulated information exceeds a predetermined threshold; and further comprising at least one of the steps of disabling further accumulation of information relating to the duration of the actuator close command when the actuator is stalled closed, and disabling further accumulation of information relating to the duration of the actuator open command when the actuator is stalled open. 8. The method of claim 7, further comprising at least one of the steps of clearing the accumulation of information relating to the duration of the actuator close command when the actuator is stalled closed, and clearing the accumulation of information relating to the duration of the actuator open command when the actuator is stalled open.9. A method of controlling an actuator, comprising the steps of:receiving at least one of an actuator close command and an actuator open command from an external primary controller; accumulating information relating to a duration of the at least one of the actuator close command and the actuator open command; driving the actuator when the accumulated information exceeds a predetermined threshold; and wherein the step of driving the actuator when the accumulated information exceeds a predetermined threshold comprises the step of driving the actuator when the accumulated information indicates that one of the actuator drive open command and the actuator drive close command has accumulate to approximately one second. 10. A floating actuator control system for use in a heating, ventilating, and air conditioning (HVAC) system, comprising:a damper providing a variable opening to allow fluid communication from the HVAC system to a zone; a primary zone temperature controller positioned to sense ambient temperature of the zone, the primary zone temperature controller generating a damper close command and a damper open command, the primary zone temperature controller allowing the damper close command and the damper open command to float when movement of the damper is not required; an actuator drivably coupled to the damper; and a floating actuator controller operatively coupled to the actuator, the floating actuator controller configured to receive the damper close command and the damper open command from the primary zone temperature controller; and wherein the floating actuator controller receives at least one of the damper close command and the damper open command from primary zone temperature controller, accumulates information relating to a duration of the at least one of the damper close command and the damper open command, and drives the actuator when the accumulated information exceeds a predetermined threshold. 11. The system of claim 10, wherein the predetermined threshold is set to a time value that provides an effective control response from the actuator.12. The system of claim 11, wherein the floating actuator controller processes the accumulation of information a predetermined number of times per second, and wherein the accumulation of information comprises increasing a count by an integer when one of the damper close command and the damper open command is received and decreasing the count by the integer when the other of the damper close command and the damper open command is received.13. The system of claim 12, wherein the floating actuator controller adds a count of opposite polarity of the count added during the actuator close command while driving the actuator closed and adds a count of opposite polarity of the count added during the actuator open command while driving the actuator open.14. The system of claim 13, wherein the floating actuator controller stops the actuator when the count reaches zero.15. The system of claim 10, wherein the floating actuator controller reduces the accumulated information while driving the actuator.16. The system of claim 10, wherein the floating actuator controller disables further accumulation of information relating to the duration of the damper close command when the damper is stalled closed, and disables further accumulation of information relating to the duration of the damper open command when the damper is stalled open.17. The system of claim 16, wherein the floating actuator controller clears the accumulation of information relating to the duration of the damper close command when the damper is stalled closed, and clears the accumulation of information relating to the duration of the damper open command when the damper is stalled open.18. A method of controlling an actuator, comprising the steps of:incrementing an accumulated sum each cycle that an actuator open command is present; decrementing the accumulated sum each cycle that an actuator close command is present; driving the actuator open when the accumulated sum reaches a predetermined positive valve; and driving the actuator closed when the accumulated sum reaches a predetermined negative value. 19. The method of claim 18, further comprising the steps of:decrementing the accumulated sum each cycle that the actuator is being driven open; and incrementing the accumulated sum each cycle that the actuator is being driven closed. 20. The method of claim 19, further comprising the step of stopping the actuator when the accumulated sum reaches zero.21. The method of claim 18, further comprising the steps of:clearing a positive accumulated sum when the actuator is stalled open; and clearing a negative accumulated sum when the actuator is stalled closed.
이 특허에 인용된 특허 (5)
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Shah Dipak J. (Eden Prairie MN) MacArthur J. Ward (Minneapolis MN) Buchholz Robert L. (Eden Prairie MN) Grald Eric W. (Lyme NH) Nelson Lorne W. (Bloomington MN), Error based zone controller.
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Parsons Natan E. ; Ebner ; Jr. Emanuel C., Gas-driven liquid dispenser employing separate pressurized-gas source.
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Heitman Lynn Byron ; Ezell George D., Method and apparatus for controlling air flow in a structure.
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A. Glen Edwards ; Klaus B. Huber, Method of performing downhole functions.
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Sakai Yoshitaka,JPX ; Kikuchi Masao,JPX, Powder supply system and powder supplying unit used in the system.
이 특허를 인용한 특허 (10)
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Waseen, Daniel; Johnson, Bruce S.; Weber, Larry; Wacker, Paul, Actuator having a test mode.
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Grabinger, Cory; McMillan, Scott; Carlson, Nathan; Waseen, Daniel; McNallan, Torrey William, Actuator having an address selector.
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Grabinger, Cory; McNallan, Torrey William; Waseen, Daniel; Thomle, Adrienne; McMillan, Scott, Actuator having an adjustable auxiliary output.
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Grabinger, Cory; Thomle, Adrienne; McNallan, Torrey William; Waseen, Daniel, Actuator having an adjustable running time.
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Bokusky, Mark David; Sibilski, Robert; Jasiczek, Liliana, Actuator power control circuit having fail-safe bypass switching.
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Grabinger, Cory; McNallan, Torrey William; Waseen, Daniel; Thomle, Adrienne; McMillan, Scott, Actuator with diagnostics.
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Grabinger, Cory; McNallan, Torrey William; Waseen, Daniel; Thomle, Adrienne; McMillan, Scott, Actuator with diagnostics.
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McNallan, Torrey William; Waseen, Daniel; Wacker, Paul, Dual potentiometer address and direction selection for an actuator.
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Bolusky, Mark D.; Grabinger, Cory L., Inverter loop latch with integrated AC detection reset.
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Bartholomew, John C.; Bokusky, Mark D.; Moeller, Steffen J., Power supply compensation for an actuator.
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