摘要
针对液体粘度的在线测量问题,提出了一种基于柔性铰链的液体粘度测量方法。采用电磁驱动,使柔性铰链探头在被测液体中进行往复运动;结合专用的电磁线圈驱动电路、信号调理电路以及多路信号同步采集与实时显示、处理软件,基于柔性铰链的平行四边形结构优势,通过检测铰链探头在被测液体中的振动特性,获取相应运动的阻尼因数,从而推算出被测液体的粘度。通过实验研究,实现了对铰链运动振动特性的实时测量、高精度采集和处理,并进行了测量系统标定,建立了阻尼因数与液体粘度的数学模型,最终,通过与标准粘度计的测量结果进行比对,验证了该测量方法的有效性。
Aiming at the problem of on-line measurement of the liquid viscosity, a method based on the style of flexible hinge was proposed to measure the viscosity of the liquid. Driven by electromagnetic,the hinge probe moved back and forth in the measured liquid. With special electromagnetic coil driver circuit,signal conditioning circuit and multi-channel signal collected synchronously and displayed in real time and processing software,based on the advan-tage of parallelogram structure of the flexible hinge,by measuring the vibration characteristics of the hinge probe in the measured liquid,the corresponding movement damping factor was obtained to compute the viscosity of the liquid. Vibration characteristics of hinge movement can be measured in real time,collected and processed precisely through experiments,system calibration,damping factor and liquid viscosity mathematical model were accomplished. Finally, the efficiency of the measurement method was proved by comparative study with a standard viscometer.
出处
《传感技术学报》
CAS
CSCD
北大核心
2015年第3期310-314,共5页
Chinese Journal of Sensors and Actuators
关键词
液体粘度测量
柔性铰链
电磁感应
阻尼因数
liquid viscosity measurement
flexible hinge
electromagnetic induction
damping factor
