Abstract: Aiming at the problem that the system characteristics are complex and it is difficult to quickly find the appropriate parameters of the PID controller, due to the coupling between the system and pump source in the ground load simulation system of aircraft hydraulic energy module, the direct drive proportional valve was used to control the flow or pressure of the system by throttling to simulate the load based on the research of load simulation device of hydraulic energy system for an aircraft Tiebird project. The load simulator of hydraulic energy system was designed, the system principle and control difficulties were discussed and the mathematical model of the system was analyzed and established. Based on the characteristics of the system, the PID control method of a neural network was used to quickly find the appropriate parameters of the PID controller. The algorithm was simulated in Matlab and verified by experiments. The results indicate that this method is feasible and can find the appropriate PID control parameters faster than manual trials.
Key words: load simulation; pressure and flow; BP neural network; PID control; hydraulic energy system