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脉冲气体供应阀是脉冲感应式推力器中极其重要的装置。结合推力器对阀快速响应性的要求以及阀中电-机械转换器的工作原理,在现有永磁体技术基础上,针对传统磁路结构存在的问题,提出一种新型环状动圈式电-机械转换器结构。采用磁导分析法,建立磁路结构模型,对永磁激励动圈式电-机械转换器的磁路结构进行设计和分析。静态磁场仿真表明,该磁路结构产生的平均气隙磁感应强度为1.102 T,这一指标很好的满足脉冲气体供应阀对电-机械转换器工作气隙磁感应强度的要求,同时其结构体积要比传统外磁式结构小约10%。
Pulsed gas supply valves are extremely important devices in pulse-induced thrusters. Combined with the requirement of valve’s quick response to thrusters and the working principle of electro-mechanical converter in valves, based on the existing permanent magnet technology, aiming at the existing problems of traditional magnetic circuit structure, Mechanical converter structure. Using the method of flux analysis, the magnetic circuit structure model was established to design and analyze the magnetic circuit structure of permanent magnet excited dynamic electromechanical converter. The static magnetic field simulation shows that the average air gap magnetic induction intensity of the magnetic circuit structure is 1.102 T, which meets the requirements of pulsed gas supply valve for the magnetic induction of working air gap of electro-mechanical converter well. It is about 10% smaller than the traditional external magnetic structure.