1. By changing the control setting value of the TCU temperature control system, the system lag in the process can be responded as soon as possible and a small system overshoot can be obtained.
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2, the control is composed of two groups of PID (each group of PID is variable) control loop, the two groups of control loop called: the main loop and the slave loop, the control output of the main loop as the set value of the slave loop.
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3. The system adopts feedforward PV, and the output of PID operation result of the main control loop is combined with the feedforward PV signal as the set value of the slave control loop, so as to control the temperature change gradient and ensure the temperature control accuracy of the system.
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4, the specially designed lag predictor (no model self-building tree algorithm) generates a dynamic signal yc(t) to replace the process variable y(t) as a feedback signal.
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5, generate an e(t) signal to the controller, so that the controller anticipates the control effect without a large lag, so that the controller can always produce a suitable control signal.
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6, through the three-point sampling (material temperature point, temperature control system outlet temperature, temperature control system inlet temperature) tree algorithm and the general anti-lag cascade algorithm.