Once-through steam generator steam pressure fuzzy ¿CPID control apparatus and control method

A technology of steam generator and control method, which is applied in the direction of electric fluid pressure control, steam generation, control system, etc. It can solve the problems of affecting the control effect, difficult to obtain the curve, and fuzzy sliding mode of the DC steam generator, etc., to achieve The effect of good robustness and high control precision

Inactive Publication Date: 2008-09-10
HARBIN ENG UNIV
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Problems solved by technology

[0004] After searching the existing technical literature, it is found that Zhang Guifeng's sliding mode fuzzy control of the once-through steam generator is the current research on the contro

Method used

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  • Once-through steam generator steam pressure fuzzy ¿CPID control apparatus and control method
  • Once-through steam generator steam pressure fuzzy ¿CPID control apparatus and control method
  • Once-through steam generator steam pressure fuzzy ¿CPID control apparatus and control method

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Embodiment Construction

[0058] The measurement system of this embodiment adopts a pressure sensor and a flowmeter, the single-chip microcomputer includes fuzzy-PID control software for a DC steam generator based on fuzzy switching, and the actuator is a water supply valve.

[0059] combine figure 1 , Fuzzy switching-based direct current steam generator steam pressure fuzzy-PID control device, including: measurement system 1, analog / digital converter 2, digital filter 3, controller 4, digital / analog converter 5, actuator 6. The output end of the measurement system 1 is connected to the input end of the analog / digital converter 2, the output end of the analog / digital converter 2 is connected to the input end of the digital filter 3, the digital filter 3 is connected with the controller 4, and the controller The output of 4 is connected to the actuator 6 through the digital / analog converter 5. The measurement systems described are flow meters and pressure sensors.

[0060] The fuzzy-PID control system...

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Abstract

The invention provides a fuzzy-PID control device for steam pressure of a once-through steam generator and a coordinated control method. A fuzzy-PID controller is a core part of the fuzzy control device for steam pressure of the once-through steam generator, comprising a fuzzy-controller and a PID-controller, and smooth transition of the two controls can be guaranteed by adopting fuzzy switching. With the implementation of an excellent stability of the PID controller and a good rapidity of the fuzzy controller, when the deviation is larger, a proper action can be provided rapidly by means of the characteristic of human-simulated intelligent control so as to suppress interference rapidly and smoothly, thereby guaranteeing the rapidity and robustness of dynamic response of the system; when the deviation is smaller, a conventional PID plays the leading role to guarantee the excellent steady-state performance. The fuzzy-PID control device is applicable to the system with serious non-linearity and time variance, such as the once-through steam generator, and has high control precision and good robustness. The fuzzy-PID control device can be practically applied to the design of the control system of the once-through steam generator so as to improve the control quality of the system.

Description

technical field [0001] The invention relates to a control device for the steam pressure of a direct current steam generator, and also relates to a control method for the steam pressure of a direct current steam generator, in particular to a fuzzy-PID control device and control device for the steam pressure of a direct current steam generator based on fuzzy switching. method. Background technique [0002] The steam generator is a key piece of equipment in a pressurized water reactor, providing cooling to the reactor and generating steam for the steam turbine to do work. In the current design, the once-through steam generator is mostly used. It does not need to install a steam-water separator, the structure is simple, the static characteristics are good, and the maneuvering performance is also good; because the superheated steam is generated, a dehumidification device can not be installed between the high and low cylinders of the steam turbine, which simplifies the system and...

Claims

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Application Information

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IPC IPC(8): F22B35/18G05D16/20G05B13/02G05B11/42
Inventor 张伟夏国清边信黔施小成严浙平杨本坤王元慧
Owner HARBIN ENG UNIV
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