Abstract

In order to improve the controlling effect of temperature and pressure of industrial boiler and ensure the safety of it, the AT89C55 and fractional order PID controller are applied in it. Firstly, mathematical model of water supply system of boiler is studied. Secondly, the water supply controlling system of boiler based on AT89C55 is designed. Thirdly, basic theory of fractional order PID algorithm is put forward, and the improved genetic algorithm is used to optimize the parameters of it. Finally, controlling simulation analysis of temperature and pressure of boiler water supply is carried out, results show that the novel method has better controlling effect.

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