光学精密工程2025，Vol.33Issue(14)：2231-2241,11.DOI:10.37188/OPE.20253314.2231
绝对重力仪托车运动控制策略研究与应用
Research and application of absolute gravimetric pallet motion control strategy
摘要
Abstract
Laser interferometric absolute gravimeter plays an irreplaceable and important role in the fields of earth science,resource exploration,geological survey,earthquake monitoring and so on.The measure-ment process needs to use the pallet to realize the smooth release and undertaking of the falling body,and the motion control precision of the pallet directly affects the gravity measurement results.In order to im-prove the motion-control accuracy of the absolute-gravimeter pallet,an improved S-curve absolute-gravi-meter pallet motion-control strategy was designed and the motion characteristics of the absolute-gravimeter pallet were studied.Firstly,the servo-motor drive-system transfer model was constructed on the basis of the mathematical model of the brushed DC motor.Then,the improved S-shaped pallet motion curve was designed and the correlation between the ideal displacement curve and the actual displacement curve of the pallet was compared and analyzed.Finally,based on the self-developed NIM-3A absolute gravimeter,a laser-interference signal data-acquisition system was built to collect the movement data of the pallet truck and to analyze the measured pallet-movement data.The experimental results show that the improved S-type pallet motion curve designed in this paper makes the coefficient of determination R2 between the actual pallet motion displacement and the ideal displacement of the pallet greater than 0.99,the standard devia-tion of the displacement in the first 0.05 s of the actual pallet motion is reduced by about 1/2,and the va-lidity of the gravity measurement data is increased by 9.3％.The research results can provide certain tech-nical support for optimizing the performance of laser interferometric absolute gravimeter.关键词
激光干涉型绝对重力仪/托车运动/改进S型曲线/有刷直流电机Key words
laser interferometric absolute gravimeter/pallet motion/optimized S-curve/brushed DC motor分类
信息技术与安全科学引用本文复制引用
牟宗磊,李清孟,冯金扬,王启宇,吴书清,李春剑,要佳敏,胡若..绝对重力仪托车运动控制策略研究与应用[J].光学精密工程,2025,33(14):2231-2241,11.基金项目
国家自然科学基金青年基金(No.42304190) （No.42304190）
深地国家科技重大专项(No.2024ZD1002504) （No.2024ZD1002504）
绝对重力仪一体化减振支座研究(No.AKYZZ2403) （No.AKYZZ2403）
