Abstract

Now many of the small scale power plants are controlled by the conventional analog instruments with poor performance and reliability. It is an economic way to use the intelligent digital controller to upgrade the automatic control and instrument system of these power plants. In this article the intelligent feature of a new kind of digital controller is described briefly and then its application in the boiler combustion control is discussed. The controlled process is analyzed first and then a control strategy is designed to obtain good control performance with the PID parameters auto-tuned. The stable operation of this control system more than one year proves that the design of this system is successful.

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