原木形状数学模型的参数估计及最佳锯剖

本文在研究了用矩阵表示法建立原木形状数学模型的基础上,又对以原木木质部分最小边界所构成的有效锯解空间做了深入探讨。有效空间的近似规则几何体的方程参数可以用最小二乘参数估计法去辩识,据此可以求出原木椭圆截面的长轴方向,即最佳锯剖方向。从而可以在极短时间内设计出最佳下锯图,实现最佳锯剖实时控制。

THE PARAMETER ESTIMATION OF THE MATHEMATICAL MODEL OF LOG SHAPES AND BEST OPENING FACE

According to the analysis of the mathematical model of log shapes represented by matrix, this paper deals with the part of the log that can be converted to lumber, and uses least square methodto determine the equation coefficients of a uniform geometry which is the closest in shape to the log. And then, the best log breakdown position can be found out by using this equation. Sawed at this position, the maximum lumber recovery will result. The computed result of this method shows that the sawing pattern of maximum recoyery can be obtained in a few seconds.