In order to determine the control characteristics of a plate-typed high-speed on/off valve (HSV) and explore its low-current driving control mechanism,the structure and operating principle of the on-off valve were described,and based on the established mathematical model,the static pressure control characteristic was qualitatively explained.By using of the open-source electromagnetic analysis software FEMM,the finite element model of electromagnet was established,and the distributions law of electromagnetic force and magnetic flux density in working air gap and coil current coordinate space were obtained.Then,the co-simulation model of the on-off valve was established,the static pressure control characteristics was studied,and the dynamic responses of coil current,valve displacement,circuit inductance and chamber pressure were elaborately analyzed,the low-current driving control mechanism of HSV was expounded.Finally,the static and dynamic performance of HSV was tested and compared.The experimental results show that the established model can well describe the static and dynamic characteristics of the plated-type HSV,and the low-current driving mechanism is well explained,which can provide good reference for further development of low-power HSV.