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针对液体预热控制系统大滞后、大惯性、时变不确定性和升温单向性的特点,为了提高温控系统的控制精度与响应速度,以达到高质量工作的要求,在预热温度控制过程中,提出了一种基于PLC的智能PID控制方法。该方法能使系统按照反馈温度进行不同算法调节,既具有快速性,又具有稳定性和可靠性,较好的满足了控制要求。
In order to improve the control accuracy and response speed of the temperature control system in order to meet the requirements of high quality work, aiming at large lag, large inertia, time-varying uncertainty and unidirectional heating of liquid preheating control system, In the process, a kind of intelligent PID control method based on PLC is proposed. This method can make the system regulate different algorithms according to the feedback temperature, which not only has the advantages of fastness, stability and reliability, but also better meets the control requirements.