CAJ | 학술논문

随着微推进技术的快速发展，微推力器推力的测试与标定也日益困难。为实现微推力的精密测量和动态特性测试，通过分析超导重力梯度仪的差分加速度测量原理、仪器的构成和原理电路等，提出了一种基于高温超导差分加速度测量原理和SQUID检测技术微推力测量方案，其推力测量范围为10-7～10-2 N、测量频带从直流至4 Hz。根据检验质量的动力学方程和超导回路磁通量守恒方程，导出了推力与输出差分电流的传递函数，分析了影响测量的主要噪声。方案可应用于微推力的测量，并有进一步提高推力测量精度的潜力。
수착미추진기술적쾌속발전，미추력기추력적측시여표정야일익곤난。위실현미추력적정밀측량화동태특성측시，통과분석초도중력제도의적차분가속도측량원리、의기적구성화원리전로등，제출료일충기우고온초도차분가속도측량원리화SQUID검측기술미추력측량방안，기추력측량범위위10-7～10-2 N、측량빈대종직류지4 Hz。근거검험질량적동역학방정화초도회로자통량수항방정，도출료추력여수출차분전류적전체함수，분석료영향측량적주요조성。방안가응용우미추력적측량，병유진일보제고추력측량정도적잠력。
With the rapid development of micro-propulsion technology , it is increasingly difficult to test and calibrate the mi-cro-thrust.According to the principle of differential acceleration of superconducting gravity gradiometer, we propose a design-to precisely test micro-Newton thruster based on high temperature superconducting and SQUID detecting technology , with range 10mN and accuracy and frequency band 4 .Transfer function of propeller thrust to output differential current is de-duced based on kinetic equations of test masses and conservation equations of magnetic flux of superconducting loop.Some important noises are analyzed.Lastly, it is suitable for testing micro-thrust in addition to considerable potential of improving accuracy.