Based On Arm9 Oven Temperature Gray Pid Control Study

Drier was commonly known as oven or oven drying. It has been used extensively in the industrial, medical and laboratory, because of its simple structure and low prices. However, the control of the oven has two methods:First, two-type control, also known as on-off control, this two-type control is simple, but the accuracy is low and constant temperature effect is not obvious:the second is the conventional PID control. It controls system by calculating the system error and using proportional, integral and differential to control. Although the PID controller is simple to understand and doesn't need the exact system model in use, it's settling time is too long, and stable of the poor, vulnerable to outside interference. So how to control the oven temperature to achieve constant temperature effect, and it became a focus of this paper research question.In order to comply with networking, information, intelligence trends and requirements of instrument, this paper will use that be proposed and developed by Deng Julong, in the more advanced ARM9 embedded platform, using the WinCE operating system and Ethernet communications technology to further study and improve the drying oven temperature control system. This paper will complete the Grey PID control algorithm debugging in Matlab, and successfully transplanted to the ARM9 embedded platform, and also completed customization of WinCE operating system on the ARM9 platform, design of data acquisition circuit. Ultimately, through the upper and lower application procedure development, this system will realize the real-time control of oven temperature.Through extensive testing, this paper studied the drying oven temperature control system of temperature control can be achieved. It achieves a friendly interface by the normal upper and lower computer communication. The system of oven temperature control is a basis to achieve full automation and information.