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<p>Magnetization convenience is crucial consideration for design of valve magnetic actuators. The existing repulsive-magnetic-coupling of 2D maglev valve is not oriented to the integral-magnetization-processes, resulting in the high assembly cost. This paper presents a novel tractive-magnetic-coupling (TMC) and its application on a 2D electro-hydraulic proportional flow valve (2D-EHPFV), whose configuration not only fulfill the requirements of 2D valve, but also oriented to integral-magnetization-process. To investigate the output torque of TMC, a detailed analytical model considering leakage flux, edge effect and tooth magnetic saturation is formulated based on the equivalent magnetic circuit method. To facilitate the magnetic saturation calculation, a special magnetic permeability database is established for tooth region of TMC using Ansoft/Maxwell software. Prototype of TMC is machined and an exclusive experimental platform is built. Torque-displacement characteristics under different working airgap and tooth number are measured. The experimental results are in good agreement with the analytical results, which verifies the correctness of the analytical model. Then the TMC is integrated into the 2D-EHPFV by replacing the repulsive-magnetic-coupling. Prototype of 2D-EHPFV is designed and manufactured to test the no-load flow characteristics, load flow characteristics, leakage characteristics, frequency characteristics and step response. Under working pressure of 15&#xa0;MPa, the maximum no-load flow rate is 82.2 L/min with the hysteresis of 2.6%, and the amplitude and phase frequency width is 21.6 Hz, and 28.9 Hz. The detailed experimental results show that TMC can be applied to 2D valves to form 2D-EHPFV, which can reduce hysteresis and cost, and improve response speed.</p>

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Investigation on a Novel Tractive-Magnetic-Coupling and its Application on 2D Electro-Hydraulic Proportional Flow Valve

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年7月3日

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  • Hao Xu,
  • Bin Meng,
  • Guanzheng Yang,
  • Sheng Li,
  • Jian Ruan

摘要

Magnetization convenience is crucial consideration for design of valve magnetic actuators. The existing repulsive-magnetic-coupling of 2D maglev valve is not oriented to the integral-magnetization-processes, resulting in the high assembly cost. This paper presents a novel tractive-magnetic-coupling (TMC) and its application on a 2D electro-hydraulic proportional flow valve (2D-EHPFV), whose configuration not only fulfill the requirements of 2D valve, but also oriented to integral-magnetization-process. To investigate the output torque of TMC, a detailed analytical model considering leakage flux, edge effect and tooth magnetic saturation is formulated based on the equivalent magnetic circuit method. To facilitate the magnetic saturation calculation, a special magnetic permeability database is established for tooth region of TMC using Ansoft/Maxwell software. Prototype of TMC is machined and an exclusive experimental platform is built. Torque-displacement characteristics under different working airgap and tooth number are measured. The experimental results are in good agreement with the analytical results, which verifies the correctness of the analytical model. Then the TMC is integrated into the 2D-EHPFV by replacing the repulsive-magnetic-coupling. Prototype of 2D-EHPFV is designed and manufactured to test the no-load flow characteristics, load flow characteristics, leakage characteristics, frequency characteristics and step response. Under working pressure of 15 MPa, the maximum no-load flow rate is 82.2 L/min with the hysteresis of 2.6%, and the amplitude and phase frequency width is 21.6 Hz, and 28.9 Hz. The detailed experimental results show that TMC can be applied to 2D valves to form 2D-EHPFV, which can reduce hysteresis and cost, and improve response speed.