Measurement of Micro Thrust With Torsional Pendulum and Reflective Fibre Optic Displacement Sensor
A compact thrust stand is developed based on torsional pendulum and fibre optic reflective intensity modulation. Instead of flexural pivots, steel thread with a diameter of 0.1mm is used as the torsional sensitive element to provide lower torsion rigidity. The impulse output of the tested micro thruster results in a proportionate displacement at the measuring point, which is detected by the reflective fibre optic displacement sensor. Experimental results show that the thrust stand has a very high sensitivity of 1.1V/ μN.s and an impulse measurement resolution in the order of 10-8N.s.
torsional pendulum fibre optic displacement sensor thrust stand impulse measurement
YU Jiwei CHEN Xupeng LI Yong
Department of Precision Instruments and Mechanology, Tsinghua University, Beijing, 100084 China
国际会议
北京
英文
2007-08-05（万方平台首次上网日期，不代表论文的发表时间）