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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。
In order to analyze the working characteristics of the pumping unit and the efficiency of the whole machine, it is necessary to find out the mean and root mean square values of various measured distortion curves when it is working. Based on the numerical integration method, the successive optimization of the quadrature formula and the established error estimation formula are combined with the measured periodic distortion current curve and power curve to calculate and analyze and verify with other methods. The results from the comparison verify that this method is very effective.