滑油泵试验器流量修正参数确定方法研究

发布时间：2018-06-15 12:57

本文选题：滑油泵试验器 + 流量计量　；参考：《测控技术》2014年11期

【摘要】：为提高低压大流量滑油泵试验器流量计量的准确性,针对计量过程中流量影响因素恒定控制难的问题,分析了流量计量过程的特性,确定了影响流量计量精度的主要因素:滑油泵出口压力、滑油温度和滑油泵转速~([1])。为消除这三种因素对计量的影响,提出了带回归系数的流量补偿方法。为确定回归参数,采用多元线性回归算法~([2]),建立多元线性回归模型,并结合大量的实验数据,利用Madab对回归模型求解,最终求得流量回归系数并应用到控制系统中。实践证明,该方法提高了试验器的计量精度,减少了实验次数,对两种标准泵计量20余次,计量误差均在±0.3 L之Qg,满足使用条件。
[Abstract]:In order to improve the accuracy of the flow meter of the low pressure and large flow oil pump tester, the characteristics of the flow measurement process are analyzed in view of the difficulty of constant control of the flow influencing factors in the metering process. The main factors influencing the accuracy of flow measurement are determined as follows: the outlet pressure, the oil temperature and the rotational speed of the lubricating oil pump ([1]). In order to eliminate the influence of these three factors on measurement, a flow compensation method with regression coefficient is proposed. In order to determine the regression parameters, a multivariate linear regression model was established by using the multivariate linear regression algorithm ([2]), and a large number of experimental data were used to solve the regression model using Madab. Finally, the flow regression coefficient was obtained and applied to the control system. It is proved by practice that this method can improve the measuring accuracy of the tester and reduce the number of experiments. For the two kinds of standard pumps, the metering errors are all 卤0.3 L Qg, which meets the application conditions.
【作者单位】：辽宁工程技术大学机械工程学院;
【分类号】：TH325;TH814

【参考文献】