The second presents the marching iteration method with pressure relaxation factor.
第二部分介绍带压力松弛因子的推进迭代方法；
2
During the solution iterations, the residual change is used as accelerating factor to revise weight function. As a result, the number of iteration and the calculation time are decreased.
在求解迭代过程中，以残差变化量作为加速因子，修正权函数，减少了迭代次数，加快了算法的计算速度。
3
Guaranteed by the indentation factor, the improved PSO algorithm can keep the iteration particles in feasible region.