【摘要】 为了分析抽油机的工作特性及整机效率,需要求出在它工作时各种实测畸变曲线的平均值和均方根值。本文根据数值积分法,采用逐次优化的求积公式及建立的误差估算式,结合实测的周期畸变电流曲线和功率曲线进行了计算和分析并与其它方法作了对比验证。从对比验证的结果看出这种方法是很有效的。更多还原

【Abstract】 In order to analyze the operating characteristics and the combined effeciency of the whole pumping system, it is necessary to calculate the mean values and root-mean-square values of various distorted curves measured while in operation. Based on the method of numericai integration, by means of step-dy-step optimizing integral equations and error-evaluating formulas, the authors ca lculate and study the measured cyclically distorted current curves and power curves. The authors give also the verification of the advantage of this method by contrast to other methods.更多还原