摘要
对空间惯性传感器的捕获定位与释放机构进行了性能测试。结果表明:在输入电压从0升到150 V,然后降至0的过程中,压电叠堆驱动器的极限位移为21.03μm;在释放顶针与测试质量块的间距(即预留间隙)为0.02 mm、输入电压为97 V时,预载力达0.30 N;当预留间隙为0.03 mm时,需在125 V的输入电压下预载力才能达到0.30 N;在预载力为0.30 N的条件下,预留间隙不宜大于0.03 mm;俯仰角度和偏航角度能共同影响预载力,且前者的影响大于后者;在测试范围内,受释放顶针偏转程度影响的预载力最大偏差约达到了43%;压电叠堆驱动器蠕变特性对捕获定位与释放机构性能的影响不明显。
The performance of grabbing,positioning and release mechanism(GPRM)of the space inertial sensor is tested.The results show that the ultimate displacement of the piezoelectric stack driver is 21.03μm when the input voltage rises from 0to 150Vand then drops to 0.When the distance between the release thimble and the test mass block(that is,the reserved distance)is 0.02mm and the input voltage is 97V,the preload force reaches 0.30N;When the reserved spacing is 0.03mm,the preload can reach 0.30Nonly under 125Vinput voltage.When the preload is 0.30N,the reserved spacing should not be greater than 0.03mm.The pitch Angle and yaw Angle can influence the preload together,and the former has greater influence than the latter.In the test range,the maximum deviation of preload affected by the deflection degree of the thimble is about 43%.The creep characteristic of piezoelectric stack driver has no obvious influence on the performance of GPRM.
作者
徐志晨
纪玉杰
刘博林
XU Zhichen;JI Yujie;LIU Bolin(School of Mechanical Engineering,Shenyang Ligong University,Shenyang 110159,China)
出处
《成组技术与生产现代化》
2023年第3期44-49,共6页
Group Technology & Production Modernization
关键词
空间惯性传感器
捕获定位与释放机构
压电叠堆驱动器
精密驱动
预载力
spatial inertial sensor
grabbing,positioning and release mechanism
piezoelectric stack driver
precision driving
preload force
作者简介
徐志晨(1993—),男,河北衡水人,硕士研究生,研究方向为空间惯性传感器的设计。
