DDS replacement cooking temperature control method of fuzzy fractional order PIDmu controller

Abstract

The invention provides a DDS replacement cooking temperature control method of a fuzzy fractional order PIDmu controller. The method includes the steps that the fuzzy fractional order PIDmu controllerserves as a main controller of a temperature control system, a proportional controller serves as an auxiliary loop controller of the temperature control system, and the main controller is composed ofa fuzzy controller and a fractional order PIDmu controller; the fuzzy controller adjusts the output of the fuzzy controller in real time according to the temperature deviation e and the deviation change rate ec, wherein the temperature deviation e and the deviation change rate ec serve as deltakp and deltamu parameters of the fractional order PIDmu controller respectively. According to the DDS replacement cooking temperature control method of the fuzzy fractional order PIDmu controller, the system response speed is high, the stability is good, and the method has good robustness for disturbance and can be effectively applied to the DDS replacement cooking temperature control system to improve the control effect.

Description

technical field [0001] The invention relates to the technical field of process control in the pulp and paper industry, in particular to fuzzy fractional-order PID μ The controller's DDS displacement cooking temperature control method. Background technique [0002] The paper industry is one of the ten pillar industries in my country, and its development level is one of the important symbols to measure the level of modernization and civilization of a country. With the development of economy and society, people's demand for high-quality paper continues to increase, which further increases the demand for high-quality chemical pulp. DDS displacement cooking technology is favored by major paper mills for its low energy consumption and high yield, and it is the first choice for old renovation and new construction projects in wood pulping in my country. The temperature change during the cooking process directly affects the final cooking quality, and the uniformity of the temperatu...

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Problems solved by technology

Since the cooking pot is a high-temperature, high-pressure airtight container, the temperature of the liquid medicine measured by installing a temperature transmitter in the circulating pipeline of the pot body cannot accurately reflect the temperature in the cooking pot

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