Study Of Liquid Dynamic Weighing Technology Based On Strain Measurment

What this essay researches is raised under the background that the technology on the dynamic weighing things is not so complete and good. It is about how to solve the problem through the technology of software ,and by using the maths mould in the measuring system.This essay expounds the feature of weighing dynamic things, and it is a research on determining the quality of weighing, using non-linear–parameter-way so as to reach a high-speed, continuous and accurate measuring.Through analysis on the process of pouring liquid, a dynamic maths mould is set up. Through analysis on the response of the dynamic mould under the impetus of impulse, a corresponding mould is developed. According to the supposing that continuous pouring in a short time equals the impact on each unit, firstly, a corresponding system of mould is developed. Through analysis on the theoretical details from calculation and experiment, in the way of non-lineal-parameter, the feasibility of this method is demonstrated. On this basis, a distinguishing maths mould is developed, and it is demonstrated that it is effective to the corresponding calculated results while it has quite a difference to the results of experimental details, so it can not be applied in practice. On the contrary, the distinguishing by using unit quality corresponding mould applies completely to the experimental details of continuous pouring liquid. So this method is recommended to be used as the distinguishing method of the pouring-liquid- weighing-system.During the analysis on the experimental details, it is found that it is not enough to just consider the innate one-way frequency of the system, and that the energy of transverse frequency of the weighing system and of the measuring system is greater than that of the spring vibration. So it is unfavorable for the accuracy of the distinguishing. When designing the hardware system, it should be take into consideration to sublate this bad effect and to improve the accuracy of distinguishing.This essay mainly researches in the weighing quality ,while in the calculating method and how to sublate other interfering, it does not have a further research, and do gives hope to those who do research in this aspect.