为了得到mN级推力架的静态特性,使用砝码对推力架进行静态标定,得到推力架的灵敏度、线性度、滞后性、重复性、分辨率、稳定性.证明电磁反馈力法能用于mN级的推力测量.分析推力测量过程中的影响因素,得到推力测量值的不确定度.确定推力架静态特性是测量不确定度的主要来源.推进剂供给管路带来的零位漂移,使得推力测量值的不确定度增加.%In order to obtain thrust stand static characteristics including sensitivity, linearity, hysteresis, repetition, resolution and long-term stability, the thrust stand were statically calibrated by means of weight measurement. It is proven that the feasibility of electromagnetic force technique measuring mN range thrust. Effect factors were analyzed; thrust produced by a cold gas thruster was measured by the thrust stand as a validation test. The results show that uncertainty of the thrust is mainly ascribed to static characteristics. During measurement, pumps' vibration may cause change of force produced by the propellant pipe, leading to thrust stand zero drift output, which may also increase uncertainty.
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