Temperature control method
A temperature control method and control system technology, applied in the field of temperature controllers, can solve the problems of high control precision, PID initial value control performance is greatly affected, difficult to achieve, etc., to achieve good control effect and excellent system performance
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[0029] Please refer to Figure 1 to Figure 4 , The present invention relates to a temperature control method, including the following steps:
[0030] (1) The control system model G(s) can be described by a first-order inertial lag link with interference and parameter uncertainty, and e and e& are defined as the deviation between the temperature setting value and the actual measurement value and the deviation change rate;
[0031] (2) The relay feedback method is used to identify the model parameters, and the PID initial value of the fuzzy PID is obtained based on the Z-N formula method;
[0032] (3) Based on the optimized fuzzy rules, the PID parameters are adaptively adjusted on the basis of the initial values according to the deviation e and the deviation change rate e&; and
[0033] (4) Determine the quantization factor of fuzzy PID according to the idea of changing universe.
[0034] In the step (1), the formulas of the deviation e and the system model G(s) are:
[0035] e=sv-pv...
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