Self-learning temperature precise control method

A precision control and precise technology, applied in the direction of temperature control using electric mode, auxiliary controller with auxiliary heating device, etc., can solve the difficulties in establishing mathematical models, PID control can not obtain ideal control effect, and difficulty in selecting optimal parameters And other issues

Active Publication Date: 2015-10-21
YUNNAN POWER GRID CO LTD KUNMING POWER SUPPLY BUREAU
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Problems solved by technology

[0002] The principle of traditional PID control is simple, easy to use, strong adaptability, and can be widely used in various industrial processes. However, traditional PID control also has shortcomings, such as: parameter adjustment requires a certain

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  • Self-learning temperature precise control method
  • Self-learning temperature precise control method
  • Self-learning temperature precise control method

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Embodiment Construction

[0015] See figure 1 , a self-learning type temperature precision control method, the present invention is characterized in that the method is: a precision temperature measuring device, a temperature precision control device, and a solid state relay heating control device are sequentially connected to form; wherein:

[0016] 1) The precision temperature measuring device uses the second-class standard platinum resistance thermometer 11 to detect the temperature of the controlled object, and the second-class standard platinum resistance thermometer 11 outputs a resistance change signal corresponding to the temperature change. Serial output digital signal;

[0017] 2), the temperature precision control device is composed of a temperature conversion module, a PID control module, and a power output module connected in sequence; a self-learning adjustment module is respectively connected to the PID control module and the power output module; wherein the temperature conversion module ...

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Abstract

A self-learning temperature precise control method is provided. Aiming at the fact that a temperature control system has the characteristics of non-linearity, hysteresis and time variation, the temperature control system is adopted by the invention to automatically adjust and determine the proportion gain P, the integration gain I, the differential gain D and the output power OPH of each temperature control point automatically according to a temperature control error e and a temperature change rate ec, so that the precise control with +/- 0.005 DEG C deviation is realized for each temperature control point. According to the invention, the automatic learning balance of the PID control parameters and the output power OPH are ingeniously utilized to realize the precise control of temperature. The invention is the innovated exploration and try of the temperature precise control method, the high-speed processing capability of an embedded ARM processor and intelligent control parameter learning are used to replace a normal PID control adjusting technology, so that the temperature control precision is improved, and the self-learning temperature precise control method is simple, reliable and effective.

Description

technical field [0001] The invention belongs to the category of automatic control methods, in particular to the effective precision control technology for temperature in precision detection. Background technique [0002] The principle of traditional PID control is simple, easy to use, strong adaptability, and can be widely used in various industrial processes. However, traditional PID control also has shortcomings, such as: parameter adjustment requires a certain process, and the selection of optimal parameters is difficult. It is difficult to establish an accurate mathematical model for the variable and nonlinear controlled system, and the ideal control effect cannot be obtained by using traditional PID control. In the process of precise detection, temperature is one of the important control parameters, and the effective control of temperature has great practical significance and theoretical value for ensuring the quality of detection. [0003] The present invention uses P...

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Application Information

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IPC IPC(8): G05D23/30
Inventor 王红梅杨超彭晓宇臧志刚李辉李毅勇李昆华李勇王元冬宋长勇田莉张黎罗昌荣陈益胡昌斌陈敬平王槐义李嘉鹏刘鑫邓成兰阎定强曹俊锋吴煜
Owner YUNNAN POWER GRID CO LTD KUNMING POWER SUPPLY BUREAU
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