【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。更多还原

【Abstract】 The micro-propulsion system for gravitational wave detection satellites shall provide an ultra-low-disturbance static payload platform for spacecraft, so ‘ wide-range adjustable’ thrust performance is required for the thrusters. Colloidal thrusters can produce thrust levels in the order of0. 1 μN 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. 61 μN to 4. 58 μN. Meanwhile, implementing pulse modulation technology could lower the thrust lower limit of a single-emitter thruster, decreasing the thrust from0. 65 μN to 0. 07 μN, thus a thrust lower limit below the 0. 1 μN level was achieved. The thrust adjustment range was significantly broadened which can provide technical support for meeting the demands of high-precision gravitational wave detection missions.更多还原