基于最小二乘法的自动配煤系统设计。设计的原理为：根据煤的灰分、水分、硫分，利用最小二乘法解矛盾方程的思想，计算出三种煤的配比。-Least square method based on the automatic blending system design. Design principles: In accordance with coal ash, moisture, sulfur, using least squares sol