拉普拉斯变换的一种数值计算法

典型信号的拉普拉斯变换对有表可查,有些信号的拉普拉斯积分式也有积分表可查,但实际上还有一些信号是查不到的。本文所述的拉普拉斯变换法,对上述不足之处作了改进。该方法计算方便,容易掌握,在一定条件下误差很小。

A Numerical Integration of Laplace Transforms

Laplace transform pairs of typical signals can be looked up in the table of Laplace transforms. Laplace integral forms of some signals can be calculated with the table of integrals. However, in fact, many Laplace transforms can not be found in the above two tables, which interferes with the applications of the analytical method of Laplace transform. This paper made an improvement for the defects with simple calculation. Our method is easy to master, and has less errors under certain conditions.