Optimizing Multi-coil Integrated High-speed On/Off Valves for Enhanced Dynamic Performance with Voltage Control Strategies

In optimizing high-speed on/off valves (HSVs), key components of digital hydraulic systems, this study introduces a method designed for multi-coil integrated HSVs, differing from the traditional focus on single-coil solenoid configurations. The proposed method is an optimization framework that matches with voltage control strategies to significantly enhance the dynamic performance of HSVs. Through the integration of simulation and experimental analyses, the investigation explores the functional relationship among coil volume, temperature rise, and input power. Additionally, utilizing multi-objective optimization (MOO) techniques to improve coil design and optimize performance based on meta-model of optimal prognosis (MOP) and evolution algorithm (EA), the results demonstrate that, when employing a three-voltage control strategy, coils designed with this strategy, compared to those with a single-voltage control strategy, significantly reduce the opening time for normally closed (NC) and normally open (NO) valves by up to 40% (from 5.0 ms to 3.0 ms) and 36.4% (from 5.5 ms to 3.5 ms).