引言和背景由于对高清晰度电视和显示管的迫切需要以及为了改善普通电视的会聚质量的需要,促使人们对由偏转引起的会聚误差产生了兴趣。会聚品质因素是屏轴和屏对角线误差的总和称为三引理(trilemma(图1)。这些误差与偏转线圈导线的角分布的变化没有多大关系(特别是当偏转角较小时)。一旦 Introduction and Background Due to the urgent need for high-definition television and display tubes and the need to improve the convergence quality of ordinary televisions, there has been an interest in converging errors caused by deflections. The convergence quality factor is the sum of the screen axis and screen diagonal errors called the trilemma (Figure 1). These errors have little to do with the change in the angular distribution of the deflection yoke wires (especially when the deflection angle is small). once