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Laser micro-impulse torsion pendulum

机译：激光微脉冲扭摆

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摘要

In order to investigate the feasibility regarding micro-satellite posture steering by laser micro-propulsion, a laser torsion pendulum has been set up so as to get first-hand basic physical and mechanical parameters on laser micro-propulsion. The instrumentation consists of the optical, mechanical, and electrical sub-systems. The optical system includes the main beam optics, the measuring optics, and the observation optics. The mechanical system includes the gyration apparatus, transverse translation stage, vertical translator, focal lenses translator, calibration pendulum translator, and vacuum chamber. For the electrical system a computer is used to control stepping motors to drive the above moving apparatuses. With this instrument the calibration experiment and laser ablation experiment have been carried out. The experimental results demonstrate that the instrument has the capacity to measure impulse down to 10~(-8) N·s with an error of about 10.4%, which can satisfy the requirement of micro-impulse measurement.
机译：为了研究利用激光微推进进行微卫星姿态转向的可行性，建立了激光扭摆，以获取有关激光微推进的第一手基本物理和机械参数。仪器由光学，机械和电气子系统组成。光学系统包括远光光学系统，测量光学系统和观察光学系统。机械系统包括回转设备，横向平移台，垂直平移器，聚焦透镜平移器，校准摆锤平移器和真空室。对于电气系统，计算机用于控制步进电机以驱动上述移动设备。用该仪器进行了校准实验和激光烧蚀实验。实验结果表明，该仪器可测量低至10〜（-8）N·s的脉冲，误差约为10.4％，可以满足微脉冲测量的要求。

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