TY - JOUR
TI - Research on the principle of the electronic closed-loop system of proportionally enlarged valves based on PID control with genetic algorithm
AU - Li Zhifeng
AU - Xu Xiaoming
AU - Shi Qing
AU - Hu Ya-Jun
JN - Thermal Science
PY - 2026
VL - 30
IS - 2
SP - 1147
EP - 1157
PT - Article
AB - Existing proportional throttle valves, which utilize a proportional control  pilot stage and cartridge valve, suffer from poor dynamic performance and  high steady-state errors. This paper takes the Valvistor valve as the  research object and proposes an electronic closed-loop feedback control  method. This method applies proportional-integral-derivative control based  on the genetic algorithm to monitor the valve operation in real-time, aiming  to enhance its performance. Additionally, MEMS technology is integrated, and  sensitive and miniaturized sensors are used to achieve real-time parameter  monitoring. A SimulationX model is built for analysis. The results show  that the closed-loop - controlled valve has a response time 20 ms faster  than the original valve and exhibits no over-shoot. After optimizing the  proportional-integral-derivative parameters and adding a feed - forward  controller, the valve demonstrates excellent dynamic performance, meeting  all requirements. This research provides an effective solution for improving  the performance of proportional throttle valves and holds great significance  for the development of hydraulic control systems.
DO - 10.2298/TSCI2602147L
ER -