Abstract: PID control systems are widely used in various process industries. This paper briefly presents the basic principles and parameter tuning process of PID control systems. Then, based on PIPENET software, the process of determining parameters such as proportional coefficient and integral coefficient in the constant pressure control system of simple pipelines was studied. And the basic values of each parameter were determined, which provided reference for subsequent control system debugging. The influence of various parameters of the pipeline was studied, providing reference for the PID parameter tuning of complex fluid pipeline network systems in the future.

Key words: PID control, parameter tuning, pressure control, PIPENET