Therefore , based on the resistance formulae which is obtained at the beginning of this paper , the mathematic model which sets the economic value as the objective function can be established , and then uses optimization method to get the best structure of the filter when its first invest , maintenance together with operating costs are most economical . and the different results gaining from resistance and economic analysis are compared at the end 因此本文最后着重在经实验最终确立的阻力公式基础上，以多管式高效过滤器的经济性指标为目标函数建立数学模型，采用有约束单目标多变量的最优化方法，计算得出了该种过滤器初投资和运行维护的费用总经济性最优时的结构参数，并与仅从阻力方面考虑所得到的结果进行了分析比较。
