LaCoste&Romberg ET型重力仪数字静电反馈系统的研制
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摘要
介绍以计算机技术和采用数字比例积分微分控制器控制算法研制的数字式静电反馈系统的工作原理,并将该系统用于LaCoste&Romberg(LCR)ET20型重力仪的升级改造中。改造后LCR ET20重力仪的观测结果表明,该系统能解决模拟静电反馈系统中线性度不易调整和长期稳定度差等问题,并能提高重力仪的观测精度。
The principle of the digital electrostatic feedback system developed with computer technology and control algorithm of digital PID(Proportion Integral Derivative) control is systematically introduced.In addition,it is the first time in China that this new system is successfully used in the update of LaCoste & Romberg(LCR) ET20 gravimeter.The experimental results of the LCR ET20 gravimeter with the new system installed show that problems of analog electro-feedback system,such as the difficulty to adjust linearity and the worse long-term stability,are basically resolved.Moreover,the precision of gravimeter has increased.
The principle of the digital electrostatic feedback system developed with computer technology and control algorithm of digital PID(Proportion Integral Derivative) control is systematically introduced.In addition,it is the first time in China that this new system is successfully used in the update of LaCoste & Romberg(LCR) ET20 gravimeter.The experimental results of the LCR ET20 gravimeter with the new system installed show that problems of analog electro-feedback system,such as the difficulty to adjust linearity and the worse long-term stability,are basically resolved.Moreover,the precision of gravimeter has increased.
引文
1 Harrison J C and Sato T.Implementation of electrostaticfeedback with a LaCoste-Romberg Model G meter[R].Spring Meeting of American Geophysical Union Baltimore,1983.
2 Schnll M,R der R Hand Wenzel HG.An improved elec-tronic feedback for Lacost-Romberg gravity meters[R].B.G.I.,1984,55.
3 Becker M,等.ET型潮汐重力仪的改进[J].测绘学报,1990,19(3):495-498.(Becker M,et al.An improvedETearth tide gravimeter[J].Acta Geodaetica et Cartograph-ica Sinica,1990,19(3):495-498)
4刘冬至,等.静电反馈在重力测量中的应用[J].地壳形变与地震,1994,(3):57-64.(Liu Zhidong,et al.Appli-cation of electrostatic feedback technique to gravimeter[J].Crustal Deformation and Earthquake,1994,(3):57-64)
5贾民育,孙少安,项爱民.LCR-G/D重力仪静电反馈装置转换参数的确定[J].地壳形变与地震,1994,(3):51-56.(Jia Minyu,Sun Shaoan and Xiang Aimin.Calibration oftranslation factor of the electrostatic feedback system forLCR-G/D gravimeter[J].Crustal Deformation and Earth-quake,1994,(3):51-56)
6孙和平,等.LCR-ET20弹簧型潮汐重力仪观测结果的分析和比较[J].地震学报,2002,24(5):510-515.(SunHeping,et al.Analysis and comparison of the tidal gravityobservations obtained with LCR-ET20 spring gravimeter[J].Acta Seismologica Sinica,2002,24(5):510-515)
7刘明,等.基于虚拟仪器的LaCoste&Romberg ET重力仪数据采集和显示系统[J].电子测量技术,2002,(6):38.(Liu Ming,et al.Data acquisition and display system of La-Coste&Romberg ET gravimeter based on visual instrument[J].Electronic Measurement Technology,2002,(6):38)
2 Schnll M,R der R Hand Wenzel HG.An improved elec-tronic feedback for Lacost-Romberg gravity meters[R].B.G.I.,1984,55.
3 Becker M,等.ET型潮汐重力仪的改进[J].测绘学报,1990,19(3):495-498.(Becker M,et al.An improvedETearth tide gravimeter[J].Acta Geodaetica et Cartograph-ica Sinica,1990,19(3):495-498)
4刘冬至,等.静电反馈在重力测量中的应用[J].地壳形变与地震,1994,(3):57-64.(Liu Zhidong,et al.Appli-cation of electrostatic feedback technique to gravimeter[J].Crustal Deformation and Earthquake,1994,(3):57-64)
5贾民育,孙少安,项爱民.LCR-G/D重力仪静电反馈装置转换参数的确定[J].地壳形变与地震,1994,(3):51-56.(Jia Minyu,Sun Shaoan and Xiang Aimin.Calibration oftranslation factor of the electrostatic feedback system forLCR-G/D gravimeter[J].Crustal Deformation and Earth-quake,1994,(3):51-56)
6孙和平,等.LCR-ET20弹簧型潮汐重力仪观测结果的分析和比较[J].地震学报,2002,24(5):510-515.(SunHeping,et al.Analysis and comparison of the tidal gravityobservations obtained with LCR-ET20 spring gravimeter[J].Acta Seismologica Sinica,2002,24(5):510-515)
7刘明,等.基于虚拟仪器的LaCoste&Romberg ET重力仪数据采集和显示系统[J].电子测量技术,2002,(6):38.(Liu Ming,et al.Data acquisition and display system of La-Coste&Romberg ET gravimeter based on visual instrument[J].Electronic Measurement Technology,2002,(6):38)
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