宽范围低推力可调节胶体推力器脉冲宽度调制  

Pulse Width Modulation of Wide Range Low Thrust Adjustable Colloid Thruster

作　　者：勾应翠 庞爱平 刘辉[2] 王泰卜 GOU Yingcui;PANG Aiping;LIU Hui;WANG Taibu(The Electrical Engineering College,Guizhou University,Guiyang 550025,China;School of Energy Science and Engineering,Harbin Institute of Technology,Harbin 150001,China;General Design Institute of Hubei Academy of Spaceflight Technology,Wuhan 430040,China)

机构地区：[1]贵州大学电气工程学院,贵阳550025 [2]哈尔滨工业大学能源科学与工程学院,哈尔滨150001 [3]湖北航天技术研究院总体设计所,武汉430040

出　　处：《载人航天》2025年第1期34-43,共10页Manned Spaceflight

基　　金：国家自然科学基金项目(12162007)。

摘　　要：针对引力波探测卫星的微型推进系统需为航天器提供超低干扰的静态载荷平台,对推力器推力提出了“宽范围可调节”的性能指标。胶体推力器因其发射极尺寸小,推力水平通常仅为0.1μN量级,通过增加发射极数量提高推力上限,并采用脉冲调制策略降低胶体推力器的推力下限。实验结果表明:增加发射极数量能使推力上限从1.61μN上升至4.58μN,而采取脉冲调制技术可降低单发射极推力器推力下限,使得推力从0.65μN降低至0.07μN,实现低于0.1μN量级的推力下限,显著拓宽了推力调节范围,为满足高精度引力波探测任务的需求提供了技术保障。The micro-propulsion system for gravitational wave detection satellites shall provide an ul-tra-low-disturbance static payload platform for spacecraft,so‘wide-range adjustable’thrust per-formance is required for the thrusters.Colloidal thrusters can produce thrust levels in the order of 0.1μN due to their small emitter size.In this paper,the upper limit of the colloidal thrusters was enhanced by increasing the number of emitters and the lower limit was decreased by employing pulse modulation strategies.Experimental results indicated that increasing the number of emitters could raise the thrust upper limit from 1.61μN to 4.58μN.Meanwhile,implementing pulse modulation technology could lower the thrust lower limit of a single-emitter thruster,decreasing the thrust from 0.65μN to 0.07μN,thus a thrust lower limit below the 0.1μN level was achieved.The thrust ad-justment range was significantly broadened which can provide technical support for meeting the de-mands of high-precision gravitational wave detection missions.

关 键 词：胶体推力器 脉冲宽度调制 推力范围 推力下限 

分 类 号：V439.4[航空宇航科学与技术—航空宇航推进理论与工程]