An intelligent controller and self-tuning method
A controller and self-tuning technology, applied in sequence/logic controller program control, electrical program control, etc., can solve problems such as inaccurate PID control parameters, inability to capture system characteristics, and easy occurrence of industrial accidents, and achieve PID control. The effect of accurate control parameters, avoiding industrial accidents, and preventing overshoot situations
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[0019] The preferred implementation mode of intelligent controller and self-tuning method of the present invention is described in detail below in conjunction with accompanying drawing:
[0020] like figure 1 As shown, the self-tuning method of the intelligent controller of the present invention comprises the following steps:
[0021] 1) Determine the system output target value SV and the deviation value (SV-1) below the target value SV in the control system of the industrial temperature. When the tuning starts, compare the collected value PV with the deviation value (SV-1): if the collected If the value PV is less than the deviation value (SV-1), then send the opening control output signal, apply excitation to the control object, enter the first step of tuning, and wait for the system output wave to rise; if the collected value PV is greater than the deviation value (SV-1), then Send the closing control output signal, do not apply excitation to the control object, wait for t...
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