Modeling and experiment on hysteresis of resistance strain gauge load cell

WANG Jing1,2, GAO Gui-jun1,2, KOU Zi-ming1,2, ZHANG Xin1,2, XUE Zheng-yu2,3
(1.College of Mechanical and Vehicle Engineering, Taiyuan University of Technology, Taiyuan 030024, China;
2.National-local Joint Engineering Laboratory of Mining Fluid Control, Taiyuan 030024, China;
3.College of foreign languages, Minjiang University, Fuzhou 350108, China)

Abstract: Aiming at the problem caused by the hysteresis weighing system of the resistance strain gauge load cell, the working principle of the resistance strain gauge load cell was analyzed, and the numerical realization method of the Preisach model of the resistance strain gauge load cell hysteresis was carried out. In the research, an improved numerical realization method of the Preisach model was proposed, and the mathematical calculation formula of the improved model was given. The numerical realization method of the Preisach model before and after the improvement was experimentally studied using the Siemens weighing module. The results indicate that, comparing with the numerical implementation method of the pre-improved Preisach model, the numerical implementation method of the improved Preisach model calculates the results when the increase state load is greater than the decreasing historical maximum value and the decrease state load is less than the incremental historical minimum value. The error is smaller, and the maximum error in the experiment can be reduced from 10.26% to 1.66%. With the increase of the number of experiments, the numerical realization method of the improved Preisach model effectively reduces the accumulation of errors, which can provide the hysteresis of the resistance strain type load cell with a more accurate mathematical model.
Key words: resistance strain gauge load cell; hysteresis; Preisach model; state load