| The automation instrument application territory is getting broad increasingly and the good achievement has been acquired in process automation field. Since constantly be able to be aimed at specially designated industrial equipment propose particular demands, yet the easy configuration and setting on menu and algorithm at the same time higher request to cost be wished to be carried to the automation instruments to some particular territories such as thermal treatment, heating furnace, vacuum furnace, system pottery, food and easy boiler control and so on. So the paper is to design a sort of intelligent controller that is current, of high dependability and high performance price ratio to satisfy the demands.The design of C3000 intelligent controller which I take part in make the controller have the functions such as complex calculating and control besides record. The controller uses the ARM microprocessor as core processor unit and realizes complicated program function, also reaching the aim of the higher capability and lower power consumption.My paper is mainly involved in three aspects of research.â– The research and design of the Expression algorithm. The configuration and executing of the Expression is used to make all kinds of IO and dummy channels be used by user, which can carry through complicated calculation and control.â– The research of the control function to the history data based on the new history data structure that makes sure data don't lose, improve memory efficiency of FLASH and make user can choose freely what data need to be recorded.â– The research and design of the relay self-tuning algorithm. The self-tuning function realizes the auto tuning of PID parameters and make the controller easier to be used in industry equipment for user.At the end, the paper introduces an application of the controller in the temperature control of furnace. Also the key issue and the foreground of the automation instrument and intelligent controller application are discussed.
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