存贮论模型LINGO方法-课件（PPT·精·选）

.lg4 )РMODEL:?1] C_D = 12000;?2] D = 96000;?3] C_P = 3.6;?4] Q = (2*C_D*D/C_P)^0.5;?5] T = Q/D;?6] n = 1/T;?7] TC = 0.5*C_P*Q+C_D*D/Q;?ENDР计算结果РFeasible solution found at iteration: 0?Variable Value?C_D 12000.00?D 96000.00?C_P 3.600000?Q 25298.22?T 0.2635231?N 3.794733?TC 91073.60Р例 11 . 2Р全年的订货次数为Рn必须为正整数,Р比较n= 3 与n= 4 时全年的费用.Р继续用 LINGO 程序计算( exam1102b . Lg4)РMODEL:?1] sets:?2] times/1..2/: n, Q, TC;?3] endsets?4] data:?5] n = 3, 4;?6] C_D = 12000;?7] D = 96000;?8] C_P = 3.6;?9] enddata?10] @for(times:?11] n = D/Q;?12] TC=0.5*C_P*Q+C_D*D/Q;?13] );?ENDР例 11 . 2РFeasible solution found at iteration: 0?Variable Value?C_D 12000.00?D 96000.00?C_P 3.600000?N(1) 3.000000?N(2) 4.000000?Q(1) 32000.00?Q(2) 24000.00?TC(1) 93600.00?TC(2) 91200.00Р得到结果Р结果解释:全年组织 4 次订货更好一些,每季度订货一次,每次订货 24000件。Р例 11 . 2