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.
Li et al. (Thu,) studied this question.