计量学报2025，Vol.46Issue(10)：1403-1410,8.DOI:10.3969/j.issn.1000-1158.2025.10.01
基于分阶段控制策略的超高精度电子天平的重复性研究
Investigation on the Repeatability of Ultra-High Precision Electronic Balances Using a Staged Control Strategy
摘要
Abstract
Traditional PID control methods are susceptible to environmental disturbances during high-precision weighing,leading to fluctuations in measurement values.To address this issue,a staged control strategy to enhance the repeatability of ultra-high precision electronic balances is proposed.In the dynamic control stage,the frequency-domain oscillation method is used to tune PID parameters,optimizing the response characteristics of the control system and improving the speed and stability of the weighing process.In the quasi-static equilibrium stage,the least squares method is employed to fit the system displacement coefficient,enabling displacement compensation and minimizing the influence of mechanical factors on measurement results.Experimental results demonstrate that the proposed control strategy effectively suppresses fluctuations during the weighing process,enhances the short-term consistency of measurement results,and significantly improves repeatability.This research provides an effective control method for ultra-high precision mass measurement,with potential applications in precision weighing and microanalysis.关键词
力学计量/电子天平/PID控制/频域振荡法/最小二乘法/分阶段控制Key words
mechanics metrology/electronic balance/PID control/frequency domain oscillation method/least squares method/phased control引用本文复制引用
陈俊杰,孙鹏鹏,罗哉,江文松,王健..基于分阶段控制策略的超高精度电子天平的重复性研究[J].计量学报,2025,46(10):1403-1410,8.基金项目
国家自然科学基金(52075515,52475576) （52075515,52475576）
国家自然科学基金区域联合基金(U24A20134) （U24A20134）
中国计量科学研究院基本科研业务费项目(AKYZZ2412) （AKYZZ2412）
