例：计算过程 时段t 0 2 3 4 5 6 7 总需求量G(t) 10 15 25 25 30 45 20 30 预计到达量S(t) 10 25 预计现存量H(t) 10 10 20 20 20 150 5 0 净需求量N(t) 0 0 5 5 10 30 20 25 计划订货到达量 2525 2530 2525 P(t) 计划发出订货量 252525 302525 R(t)
例：计算过程 计划发出订货量 25 25 25 30 25 25 R(t) 计划订货到达量 25 25 25 30 25 25 P(t) 净需求量N(t) 0 0 5 5 10 30 20 25 预计现存量H(t) 10 10 20 20 20 15 0 5 0 预计到达量S(t) 10 25 总需求量G(t) 10 15 25 25 30 45 20 30 时段t 0 1 2 3 4 5 6 7 8
例2 前置时间 A 1 day B 2 days A c 1 day D 3 days E 4 days 1 day B(4) C(2) 需求 Day 10 50A Day 8 20 B(Spares) D(2) E(1) D(3) F(2) Day 6 15 D(Spares)
B(4) D(2) E(1) C(2) D(3) F(2) A 前置时间 A 1 day B 2 days C 1 day D 3 days E 4 days F 1 day 需求 Day 10 50 A Day 8 20 B (Spares) Day 6 15 D (Spares) 例2
Day: 3 5 9 10 A Required 50 Order Placement 50 LT=1 day
LT = 1 day Day: 1 2 3 4 5 6 7 8 9 10 A Required 50 Order Placement 50
Day: 5 6 8 9 10 Required 50 Order Placement 50 Required .20 200 Order Placement 20200 LT=2 Spares A 4x50=200 B(4) C(2) D(2) E1)D(3)F(2)
D ay : 1 2 3 4 5 6 7 8 9 10 A R equired 50 O rder P lac em ent 50 B R equired 20 200 O rder P lac em ent 20 200 Spares LT = 2 B(4) D(2) E(1) C(2) D(3) F(2) A 4x50=200
Day: 1 2 3 4 5 6 8 9 0 A Required 50 LT=1Order Placement 50 BRequired 20 200 LT-2Order Placement 20 200 C Required 100 LT=1Order Placement 100 D Required 55 400 300 LT-3Order Placement 55400 300 ERequired 20 200 LT=4Order Placement 20 200 F Required 200 LT=1Order Placement 200 A Part D:Day 6 B(4)】 C(2) 40+15 spares D2) E(1) D3) F2)
Day: 1 2 3 4 5 6 7 8 9 10 A Required 50 LT=1 OrderPlacement 50 B Required 20 200 LT=2 OrderPlacement 20 200 C Required 100 LT=1 OrderPlacement 100 D Required 55 400 300 LT=3 OrderPlacement 55 400 300 E Required 20 200 LT=4 OrderPlacement 20 200 F Required 200 LT=1 OrderPlacement 200 B(4) D(2) E(1) C(2) D(3) F(2) A 40 + 15 spares Part D: Day 6 20