PID Control Using Arm Controller And Modbus RTU

Abstract

An embedded system is a special-purpose computer system designed to perform a small set of dedicated functions, sometimes with real-time computing constraints. Embedded systems are used in all aspects of modern life and examples of their use are numerous. Some of the known applications are consumer electronics including personal digital assistants (PDAs), MP3 players, mobile phones, telecommunications systems, transportation systems, and medical equipments. One of the most important hardware components of an embedded system is microprocessor. ARM Controllers are sophisticated multiprocessor design which has RISC type architectures, and they have been widely used in a number of embedded designs. ARM variants have not only their high performance and low cost advantages but also power saving features. In the present paper ARM processor is used to implement Proportional-Derivative-Integral control for maintaining a specific level in the dosing tank. Modbus communication would be implemented between ARM processor and personal computer through serial port.