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Intelligent valve positioner and control method thereof

A technology of intelligent valves and control methods, applied in the direction of electrical program control, program control in sequence/logic controllers, valve details, etc., can solve problems such as crashes and instrument resets, and achieve the effect of preventing dead loops and reset phenomena

Active Publication Date: 2015-05-20
CHONGQING CHUANYI AUTOMATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the existing intelligent valve positioner is easily disturbed by external conditions, causing the instrument to reset or crash

Method used

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  • Intelligent valve positioner and control method thereof
  • Intelligent valve positioner and control method thereof

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Embodiment Construction

[0042] Embodiments of the present invention are described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation modes, and various modifications or changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention.

[0043] see Figure 1 to Figure 2 . It should be noted that the diagrams provided in this embodiment are only schematically illustrating the basic idea of ​​the present invention, and only the components related to the present invention are shown in the diagrams rather than the number, shape and shape of the components in actual implementation. Dimensional drawing, the type, quantity and proportion of each component can be changed arb...

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PUM

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Abstract

The invention provides an intelligent valve positioner and a control method thereof. The intelligent valve positioner at least comprises a calling unit, a circulating unit, a counter and a comparing unit. The calling unit is suitable for calling the circulating unit, and the cycle for calling the circulating unit is a calling cycle. The circulating unit is suitable for conducting writing operation on a storage unit when the circulating condition is true. The counter is suitable for being added by one every time the circulation unit conducts the writing operation. The comparing unit is used for comparing whether the value of the counter is larger than or equal to a preset value or not, if the value of the counter is larger than or equal to the preset value, the writing operation of the circulating unit is ended, and the counter is reset; if the value of the counter is smaller than the preset value, the next time of writing operation on the storage unit is continuously conducted, wherein the preset value of the counter is the quotient of the value of the control cycle of the intelligent valve positioner and the value of the calling cycle. Due to the fact that the counter is arranged, the phenomenon that the intelligent valve positioner is interfered by external conditions, and consequently the circulating unit is automatically started and cannot be quit is avoided.

Description

technical field [0001] The invention relates to the field of automatic mechanical control, in particular to an intelligent valve positioner and a control method thereof. Background technique [0002] The valve positioner is the main accessory of the control valve. It accepts the current valve state signal measured by the measurement module, uses the target state output by the controller as the target state signal, and compares the current valve state signal with the target state signal. When the two have When there is a deviation, the output signal transmitted to the actuator will be changed, so that the actuator will change its action, thereby changing the opening of the regulating valve. The current valve state signal may be current valve displacement information, position information, or current pressure and friction information on the valve. The target state may be a target position of the valve, a force balance state of the valve, and the like. The output signal trans...

Claims

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Application Information

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IPC IPC(8): F16K31/02G05B19/04
CPCF16K31/02G05B19/04
Inventor 蒋浩
Owner CHONGQING CHUANYI AUTOMATION