Temperature control system and temperature control method

A technology of temperature control system and temperature control method, applied in general control system, control/regulation system, adaptive control, etc., which can solve problems such as overshoot, difficult temperature drop, deviation of control target curve and response curve, etc.

Inactive Publication Date: 2013-05-29
才秀君
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] For control objects such as electric heating furnaces, because the temperature delay is very serious, sometimes reaching more than tens of seconds, it is easy to cause overshoot simply by using the above-mentioned existing methods, and it is difficult to lower the temperature after overshoot, resulting in control failure. The target curve and response curve deviate for a long time, seriously affecting the control performance

Method used

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  • Temperature control system and temperature control method
  • Temperature control system and temperature control method
  • Temperature control system and temperature control method

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Embodiment Construction

[0052] Embodiments of the present invention will be described below with reference to the drawings. Elements and features described in one drawing or one embodiment of the present invention may be combined with elements and features shown in one or more other drawings or embodiments. It should be noted that representation and description of components and processes that are not related to the present invention and known to those of ordinary skill in the art are omitted from the drawings and descriptions for the purpose of clarity.

[0053] See attached figure 1 Shown is a structural diagram of an embodiment of the temperature control system of the present invention. The control system mainly includes PID controller 1 based on fuzzy parameter tuning, PID controller 2 with fixed parameters, actuator 3, controlled system 4, temperature transmitter 5, differential module 6 and switch 7.

[0054] When ε 1 ≤|e|≤ε 2 , the PID controller 1 based on fuzzy parameter tuning is turned...

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Abstract

The invention relates to a temperature control system and a temperature control method. The system comprises a proportional-integral-derivative (PID) controller based on blur parameter adjustment and a PID controller based on fixed parameters. When epsilon 1 <=Iota e Iota<= epsilon 2, the PID controller based on the blur parameter adjustment is connected and the PID controller based on fixed parameters is disconnected. When Iota e Iota<= epsilon 1, the PID controller based on the blur parameter adjustment is disconnected and the PID controller based on fixed parameters is connected. The method and the system are good in quick in responding, small in overshoot and small in stable state error.

Description

technical field [0001] The present application relates to a control system and a control method, especially a PID temperature control system and a temperature control method. Background technique [0002] Control systems are widely used in various control objects, for example, in controlling temperature. In the use of single crystal furnaces, sintering furnaces, annealing furnaces, heat treatment furnaces, industrial kilns, electric ovens and other equipment, it is necessary to control the temperature. The process requirements for temperature control in these applications are basically the same, that is, the temperature of the controlled object is required to converge to the temperature given value with the specified accuracy after the allowable transition process, and remain unchanged for a period of time; or control The temperature tracks a pre-set target curve with a certain accuracy. The temperature control system itself is a nonlinear system with large inertia and lar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B13/04
Inventor 才秀君孙多春
Owner 才秀君
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