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Corrected PID temperature control method

A temperature control method and controller technology, applied in the direction of temperature control, control/regulation system, non-electric variable control, etc., can solve problems such as overshoot and temperature reverse regulation, and achieve convenient maintenance and use, cost reduction, and reliability. good readability

Pending Publication Date: 2022-04-12
WUHAN RAYCUS FIBER LASER TECHNOLOGY CO LTD
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Problems solved by technology

[0003] The embodiment of the present application provides a modified PID temperature control method to solve the problems of overshoot and temperature reverse adjustment caused by the large time lag and large inertia of the existing PID temperature control method

Method used

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  • Corrected PID temperature control method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0095] see figure 2 As shown, the embodiment of the present application provides a modified PID temperature control method, which is applied to the above-mentioned PID temperature control system, including:

[0096] S1, set the target temperature value t 0 , get the real-time temperature value t through the temperature sensor (k) ;

[0097] S2, calculate the calculation result PidOut of the PID controller at time k according to the PID algorithm formula (1) (k) .

[0098] The PID algorithm formula (1) is as follows:

[0099]

[0100] in,

[0101] K p is the proportional coefficient, which is obtained by data modeling calculation or its empirical value obtained according to the experimental method;

[0102] K i is the integral coefficient, which is calculated by data modeling or its empirical value is obtained according to the experimental method;

[0103] e (k) is the deviation between the target temperature value and the real-time temperature value at time k;

...

Embodiment 2

[0130] see image 3 As shown, the embodiment of the present application also provides a modified PID temperature control method, which is applied to the above-mentioned PID temperature control system, and the method includes:

[0131] S1, set the target temperature value t 0 , get the real-time temperature value t through the temperature sensor (k) ;

[0132] S2, calculate the calculation result PidOut of the PID controller at time k according to the PID algorithm formula (2) (k) .

[0133] The PID algorithm formula is as follows:

[0134]

[0135] in,

[0136] K p is the proportional coefficient, which is obtained by data modeling calculation or its empirical value obtained according to the experimental method;

[0137] K i is the integral coefficient, which is calculated by data modeling or its empirical value is obtained according to the experimental method;

[0138] e (k) is the deviation between the target temperature value and the real-time temperature value...

Embodiment 3

[0168] The embodiment of the present application also provides a modified PID temperature control method, which is applied to the above-mentioned PID temperature control system, and the method includes:

[0169] Set the target temperature value t 0 , get the real-time temperature value t through the temperature sensor (k) ;

[0170] Calculate the calculation result PidOut of the PID controller at time k according to the PID algorithm formula (1) (k) , the formula is as follows:

[0171]

[0172] in,

[0173] K p is the proportional coefficient, which is obtained by data modeling calculation or its empirical value obtained according to the experimental method;

[0174] K i is the integral coefficient, which is calculated by data modeling or its empirical value is obtained according to the experimental method;

[0175] e (k) is the deviation between the target temperature value and the real-time temperature value at time k;

[0176] A is the suppression parameter.

...

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Abstract

The invention provides a modified PID temperature control method, which is applied to a PID temperature control system, and comprises the following steps: setting a target temperature value t0, and obtaining a real-time temperature value t (k) through a temperature sensor; and calculating a calculation result PidOut (k) of the PID controller at the moment k according to a formula. The problems of overshoot and temperature reverse adjustment caused by large time lag and large inertia of an existing PID temperature control method are solved, it is guaranteed that the temperature rapidly reaches the target temperature, the algorithm is not complex, maintenance and use are convenient, and the cost of a PID controller is reduced.

Description

technical field [0001] The application belongs to the technical field of automatic control, and in particular relates to a modified PID temperature control method. Background technique [0002] Temperature control system plays an important role in related industrial production and is widely used in oil refining, metallurgy, electronics, chemical industry and other industries. It is an important topic in the field of automatic control. The temperature control algorithm generally adopts the PID algorithm to realize the control of the system. The so-called PID control is to control according to the proportion of the deviation between the set value and the measured value, the accumulation of the deviation and the trend of the deviation change. However, conventional PID is difficult to cope with the characteristics of large time lag and large inertia in the temperature control process, which will lead to low control accuracy and make the system difficult to stabilize, especially...

Claims

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Application Information

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IPC IPC(8): G05D23/20
Inventor 陈贤辉郑铎施建宏闫大鹏
Owner WUHAN RAYCUS FIBER LASER TECHNOLOGY CO LTD
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