MRP物料需求计划课件

MRP 物料需求计划MRP 物料需求计划1SIME,SHUFE物料需求计划（MRP）物料需求计划（Material Requirement Planning，简称为 MRP）是对主生产计划的各个项目所需的全部制造件和全部采购件的数量需求计划和时间进度计划。物料需求计划物料需求物料库存物料需求计划（MRP）物料需求计划（Materia2SIME,SHUFE物料需求计划（MRP）2物料需求计划主要解决以下五个问题：2要生产什么？生产多少？（来源于MPS）2要用到什么？（根据BOM展开）2已经有了什么？（根据物品库存信息、即将到货或产出信息）2还缺什么？(计算出结果)2何时安排？(计算出结果)物料需求计划（MRP）物料需求计划主要解决以下五个问题：3SIME,SHUFEMRP原理生产什么?要用什么？我们有什么？还需要什么？何时需要？主生产计划(MPS)按照物料单(BOM)库存记录物料需求计划(MRP)工作单、采购单MRP原理生产什么?要用什么？我们有什么？还需要什么？主生产4SIME,SHUFE主生产计划粗能力计划 MRP II逻辑流程图逻辑流程图 产品规划资源需求计划销售规划可行？可行？物料需求计划能力需求计划可行？采购作业车间作业成本会计业绩评价资源清单合同预测其它需求供应商信息销售与运作计划应收帐总帐应付帐库存信息物料清单工作中心工艺路线客户信息成本中心会计科目宏观微观经营规划123454个计划层次个计划层次1个执行层次个执行层次决策层 计划层 执行控制层主生产计划粗能力计划 MRP II 产品规划销售规划可5SIME,SHUFE物料需求计划（MRP）2低层码（low-level code，简称LLC）2概念：物料的低层码是系统分配给物料清单上的每个物品一个从0至N的数字码。在产品结构中，最上层的层级码为0，下一层的部件的层级码则为1，依此类推。一个物品只能有一个MRP低层码，当一个物品在多个产品中所处的产品结构层次不同或即使处于同一产品结构中的但却处于不同产品结构层次时，则取处在最低层的层级码作为该物品的低层码。物料需求计划（MRP）低层码（low-level code，6SIME,SHUFE2作用：在展开MPS进行物料需求计算时，计算的顺序是从上而下进行的，即从产品的0层次开始计算，按从上到下的顺序进行计算，当计算到该产品的某一层次（如1层），但高于低层码时（物料的低层码为2），只计算该层的物料计算结果（毛需求量）暂时存储起来，总的需求量可以汇总存储，但不进行MRP需求计算。只有到了低层码的层次，才计算净需求、需生产量等。因此，低层码是MRP的计算顺序。作用：在展开MPS进行物料需求计算时，计算的顺序是从上而下进7SIME,SHUFE物料需求计划（MRP）物料物料A的的MRP计算顺序示意图计算顺序示意图XABCDA0层1层2层物料需求计划（MRP）物料A的MRP计算顺序示意图XABCD8SIME,SHUFE制造流程与BOM结构车间车间WIP生产和采购数据生产和采购数据MRP定义定义 Item(库存）库存）设计数据设计数据ENGBOM结构结构工艺路线工艺路线前提前提应用应用创建创建制造流程与BOM结构车间WIP生产和采购数据MRP定义 It9SIME,SHUFEBOM 类型BOMBOM计划计划 BOM模型模型 BOM选项组选项组 BOM标准标准 BOM矩阵式矩阵式 BOM加减加减 BOMBOM 类型BOM计划 BOM模型 BOM选项组 BOM标准10SIME,SHUFE标准 BOM 标准物料清单是最通标准物料清单是最通用的清单类型，并列有法用的清单类型，并列有法定组件、每个组件的要求定组件、每个组件的要求数量、在制品控制信息、数量、在制品控制信息、物料计划等信息物料计划等信息CABDE2 25 53 31 11 1标准 BOM 标准物料清单是最通用的清单类型，11SIME,SHUFE选项类 BOM 选项类作为一个项目，选项类作为一个项目，成为模型物料清单中的一成为模型物料清单中的一层。选项类还可以具有适层。选项类还可以具有适用于其所有选项的法定组用于其所有选项的法定组件件VGA-BVGA显示器显示器选项类BOM 可选标准BOM 可选VGA-A标准BOM 可选选项类 BOM 选项类作为一个项目，成为模型12SIME,SHUFE模型（超级）BOM 模型物料清单定义了选项清单和选项类，指定了法定组模型物料清单定义了选项清单和选项类，指定了法定组件，您可以在件，您可以在 销售模块中选择以订购配置。模型清单可以是销售模块中选择以订购配置。模型清单可以是按订单装配或按订单挑库类型的按订单装配或按订单挑库类型的EGA显示器显示器计算机计算机VGA显示器显示器显示器显示器VGA真彩色真彩色VGA-AVGA标准标准VGA-B模型BOM 不可选标准BOM 可选选项类BOM 可选标准BOM 可选标准BOM 可选标准BOM 可选标准BOM 可选选项类BOM 不可选模型（超级）BOM 模型物料清单定义了选项清13SIME,SHUFE计划 BOM 计划物料清单计划物料清单是一个包括组件百是一个包括组件百分比分配的物料清分比分配的物料清单结构单结构培训用培训用计算机计算机科研用计算机科研用计算机车间生产用车间生产用模型模型BOM 35%不可选不可选模型模型BOM 25%不可选不可选模型模型BOM 40%不可选不可选计划计划BOM 100%不可选不可选计划 BOM 计划物料清单是一个包括组件百分比14SIME,SHUFE电 子 挂 钟机 芯花纹 1花纹 2花纹 2花纹 1红黑电 池特征件与可选件特征件与可选件钟 盘指 针盘 面秒 针 短 针 长 针钟 框塑 料(红)塑 料(白)塑 料(金)金 属(压花）金 属(平)木 雕(鹰)木 雕(屋)木 雕(轮)配不配金白黑金通用件特征件（基本组件）可选件（必选其一、可选其一）电 子 挂 钟机 芯花纹 1花纹 2花纹 2花纹 1红黑电 15SIME,SHUFE电 子 挂 钟字型 2钟 框塑 料 木 雕鹰屋红白凸平通用件机 芯钟 盘黑色金色字型 1字型 1 字型 2指 针花纹 1花纹 2长 针花纹 2花纹 1 短 针 秒 针红 黑电 池可选件(1.0)(1.0)(1.0)(1.0)(0.5)(0.5)(0.2)(0.2)(0.3)(0.3)(0.3)(0.3)(0.1)(0.1)(0.1)(0.1)金 属(0.2)(0.2)(0.6)(1.0)(1.0)(1.0)(0.5)(0.5)(0.5)(0.5)(0.5)(0.5)(1.0)注：括号内为预测百分比(0.5)模块化产品结构模块化产品结构电 子 挂 钟字型 2钟 框塑 料 木 雕鹰屋红白凸平16SIME,SHUFE 模块化物料清单模块化物料清单100 20 30 20 30 50 50 50 50 50 50 10 10 30 30 10 10 50物料名称：电子挂钟物 料 号：10000层次 物料号 物料名称选项号 选择件 数量 预测%实际需求11.2.2.211机芯钟盘 长针 短针 秒针钟框电池(通用件)1 2 3 4 1 2 1 2 1 2 1 2 3 4 5 6(可选件)黑色、字型 1黑色、字型 2金色、字型 1金色、字型 2花纹 1花纹 2花纹 1花纹 2花纹 1花纹 2塑料、红色塑料、白色金属、凸纹金属、平纹木雕、鹰木雕、屋111111111111111112根据销售定货1100012000/112000/212000/312000/412100/112100/212200/112200/212300/112300/213000/113000/213000/313000/413000/513000/614000 模块化物料清单100物料名称：电子挂钟层次 物17SIME,SHUFE物料清单的表现类型物料清单的表现类型 单层物料清单单层物料清单 缩排式物料清单缩排式物料清单 汇总的物料清单汇总的物料清单 模块式物料清单模块式物料清单 单层跟踪单层跟踪 缩行跟踪（多级反查）缩行跟踪（多级反查）成本物料清单成本物料清单物料清单的表现类型 单层物料清单18SIME,SHUFE汇总物料清单汇总物料清单（通用件汇总）（通用件汇总）XB(1)K(1)CP(3)LMDM(2)B(4)K(4)AJHPHP物料号 数量 A 1 B 5 C 1 D 1 H 2 P 5 L 1 M 3汇总物料清单XB(1)K(1)CP(3)LMDM(2)B(419SIME,SHUFE物料清单的构建物料清单的构建产生零件清单产生零件清单单级单级BOMBOM的开发的开发多级多级BOMBOM及工艺路线的开发及工艺路线的开发注意事项：注意事项：唯一编码唯一编码替代物料及替代原则替代物料及替代原则虚拟件虚拟件为了控制某些环节（检验等），可视为不同为了控制某些环节（检验等），可视为不同零件零件物料清单的构建产生零件清单20SIME,SHUFE物料清单的用途和用户物料清单的用途和用户编制计划的依据编制计划的依据配套和领料的依据配套和领料的依据进行加工过程的跟踪进行加工过程的跟踪采购和外协的依据采购和外协的依据根据它进行成本的计算根据它进行成本的计算报价参考报价参考物料追溯物料追溯使设计系列化、标准化、通用化使设计系列化、标准化、通用化涉及设计、计划、生产、财务等部门涉及设计、计划、生产、财务等部门物料清单的用途和用户编制计划的依据21SIME,SHUFE物料需求计划（MRP）2MRP子系统与其他子系统的关系图生成生成独立需求MRP采购管理MPSCRP制造标准车间管理JIT管理平衡库存管理销售管理BOM库存信息计划信息物料需求计划（MRP）MRP子系统与其他子系统的关系图生成生22SIME,SHUFE物料需求计划（MRP）2MRP的策略因素制造制造/采购标志码采购标志码提前期提前期安全库存安全库存损耗率、成品率损耗率、成品率批量政策批量政策物料需求计划（MRP）MRP的策略因素23SIME,SHUFE物料需求计划（MRP）损耗率损耗率实际需求实际需求=净需求（损耗率）净需求（损耗率）成品率成品率总投入总投入=有效产出有效产出/成品率成品率物料需求计划（MRP）损耗率24SIME,SHUFE物料需求计划（MRP）批量政策批量政策 直接批量直接批量Lot For LotLot For Lot 固定批量固定批量Fixed QuantityFixed Quantity 固定周期固定周期Fixed TimeFixed Time 经济批量经济批量EOQ(Economic Order Quantity)EOQ(Economic Order Quantity)批量增量批量增量物料需求计划（MRP）批量政策25SIME,SHUFEMRP的编制思路的编制思路 订货订货/配销配销 生产什么？生产什么？什么时候生产？什么时候生产？生产多少？生产多少？主生产计划主生产计划(MPS)需求预测需求预测 材料材料 产品结构产品结构 用料标准用料标准 提前提前 期（期（LT）物料清单物料清单 (BOM)各种材料总需求量计算各种材料总需求量计算 考虑库存量计算净需求量考虑库存量计算净需求量 考虑批量计算计划量考虑批量计算计划量 物料需求计划物料需求计划(MRP)在库量在库量 预订接收量预订接收量 仓储位置仓储位置 收发料记录收发料记录 库存记录库存记录 (INV)采购采购/外包外包/制造制造 什么物料？什么物料？什么时候？什么时候？数量多少？数量多少？分段执行分段执行 制造工令制造工令 采购采购/委外加工委外加工 计划计划 应发哪些订单？应发哪些订单？哪些订单需提前或延缓安排？哪些订单需提前或延缓安排？哪些料应催收哪些料应催收?执行执行 图图6-4 系统处理逻辑图系统处理逻辑图 MRP的编制思路 订货/配销 生产什么？什么时候生26SIME,SHUFE物料需求计划（MRP）2MRP的计算过程1 1、毛需求毛需求2 2、当前预计可用库存量、当前预计可用库存量=现有库存量现有库存量-已分配量已分配量3 3、PABPAB初值初值=上期末预计可用库存量上期末预计可用库存量+计划接收量计划接收量-毛需求毛需求量量4 4、净需求量、净需求量当当PABPAB初值初值=安全库存，净需求安全库存，净需求=0=0当当PABPAB初值初值 00，计划产出量，计划产出量=N*N*批量批量满足：计划产出量满足：计划产出量=净需求净需求（N-1N-1）*批量批量6 6、预计可用库存量、预计可用库存量=计划产出量计划产出量+PABPAB初值初值7 7、考虑提前期，推算计划投入量、考虑提前期，推算计划投入量物料需求计划（MRP）5、计划产出量28SIME,SHUFECooperstown Cars,Inc.vProduces toy carsBodyAxles(2)Wheels(4)Cooperstown Cars,Inc.Produces29SIME,SHUFECooperstown Cars,Inc.-Each component has a known lead timeCooperstown Cars,Inc.-Each c30SIME,SHUFECooperstown Cars,Inc.vSchedule production for:Toy car assemblyWheel assemblyBodyAxleWheelsvDemand for Toy Car in Week 8 is 100Cooperstown Cars,Inc.Schedule31SIME,SHUFETime-Phased Product Structure1 weekToyCarTime in Weeks45678Time-Phased Product Structure132SIME,SHUFETime-Phased Product Structure1 week1 weekToyCarWheelAssemblyBody2 weeks45678Time in WeeksTime-Phased Product Structure133SIME,SHUFETime-Phased Product Structure1 week1 weekToyCarWheelAssemblyBodyAxlesWheels2 weeks1 week2 weeks45678Time in WeeksTime-Phased Product Structure13412345678Toy CarRequired Date100Order release dataWheel assembly Required DateOrder release dataBodyRequired DateOrder release dataAxleRequired DateOrder release dataWheelsRequired DataOrder release dataWeekGross Requirements Plan12345678Toy CarRequired Date103512345678Toy CarRequired Date100Order release data100Wheel assembly Required DateOrder release dataBodyRequired DateOrder release dataAxleRequired DateOrder release dataWheelsRequired DataOrder release dataWeekGross Requirements Plan12345678Toy CarRequired Date103612345678Toy CarRequired Date100Order release data100Wheel assembly Required Date200Order release dataBodyRequired DateOrder release dataAxleRequired DateOrder release dataWheelsRequired DataOrder release dataWeekGross Requirements Plan12345678Toy CarRequired Date103712345678Toy CarRequired Date100Order release data100Wheel assembly Required Date200Order release data200BodyRequired DateOrder release dataAxleRequired DateOrder release dataWheelsRequired DataOrder release dataWeekGross Requirements Plan12345678Toy CarRequired Date103812345678Toy CarRequired Date100Order release data100Wheel assembly Required Date200Order release data200BodyRequired Date100Order release dataAxleRequired DateOrder release dataWheelsRequired DataOrder release dataWeekGross Requirements Plan12345678Toy CarRequired Date103912345678Toy CarRequired Date100Order release data100Wheel assembly Required Date200Order release data200BodyRequired Date100Order release data100AxleRequired DateOrder release dataWheelsRequired DataOrder release dataWeekGross Requirements Plan12345678Toy CarRequired Date104012345678Toy CarRequired Date100Order release data100Wheel assembly Required Date200Order release data200BodyRequired Date100Order release data100AxleRequired Date200Order release data200WheelsRequired DataOrder release dataWeekGross Requirements Plan12345678Toy CarRequired Date104112345678Toy CarRequired Date100Order release data100Wheel assembly Required Date200Order release data200BodyRequired Date100Order release data100AxleRequired Date200Order release data200WheelsRequired Data400Order release data400WeekGross Requirements Plan12345678Toy CarRequired Date1042SIME,SHUFE12345678Toy CarGross requirements100Scheduled receiptsProjected on-hand|202020202020202020Planned order receiptsPlanned order releasesNet Requirements PlanWeek12345678Toy CarGross requireme43SIME,SHUFE12345678Toy CarGross requirements100Scheduled receiptsProjected on-hand|202020202020202020Planned order receipts80Planned order releasesNet Requirements PlanWeek12345678Toy CarGross requireme44SIME,SHUFE12345678Toy CarGross requirements100Scheduled receiptsProjected on-hand|202020202020202020Planned order receipts80Planned order releases80Net Requirements PlanWeek12345678Toy CarGross requireme45SIME,SHUFE12345678Toy CarGross requirements100Scheduled receiptsProjected on-hand|202020202020202020Planned order receipts80Planned order releases80Wheel assembly Gross requirements160Scheduled receiptsProjected on-hand|10Planned order receiptsPlanned order releasesNet Requirements PlanWeek12345678Toy CarGross requireme46SIME,SHUFE12345678Toy CarGross requirements100Scheduled receiptsProjected on-hand|202020202020202020Planned order receipts80Planned order releases80Wheel assembly Gross requirements160Scheduled receiptsProjected on-hand|1010101010101010Planned order receiptsPlanned order releasesNet Requirements PlanWeek12345678Toy CarGross requireme47SIME,SHUFE12345678Toy CarGross requirements100Scheduled receiptsProjected on-hand|202020202020202020Planned order receipts80Planned order releases80Wheel assembly Gross requirements160Scheduled receiptsProjected on-hand|1010101010101010Planned order receipts150Planned order releases150Net Requirements PlanWeek12345678Toy CarGross requireme48SIME,SHUFE12345678Toy CarGross requirements100Scheduled receiptsProjected on-hand|202020202020202020Planned order receipts80Planned order releases80BodyGross requirements80Scheduled receiptsProjected on-hand|4040404040404040Planned order receiptsPlanned order releasesNet Requirements PlanWeek12345678Toy CarGross requireme49SIME,SHUFE12345678Toy CarGross requirements100Scheduled receiptsProjected on-hand|202020202020202020Planned order receipts80Planned order releases80BodyGross requirements80Scheduled receiptsProjected on-hand|4040404040404040Planned order receipts40Planned order releases40Net Requirements PlanWeek12345678Toy CarGross requireme50SIME,SHUFE12345678Wheel assembly Gross requirements160Scheduled receiptsProjected on-hand|1010101010101010Planned order receipts150Planned order releases150AxlesGross requirements150Scheduled receiptsProjected on-hand|15Planned order receiptsPlanned order releasesNet Requirements PlanWeek12345678Wheel assemblyGross re51SIME,SHUFE12345678Wheel assembly Gross requirements160Scheduled receiptsProjected on-hand|1010101010101010Planned order receipts150Planned order releases150AxlesGross requirements150Scheduled receiptsProjected on-hand|15151515151515Planned order receipts135Planned order releasesNet Requirements PlanWeek12345678Wheel assemblyGross re52SIME,SHUFE12345678Wheel assembly Gross requirements160Scheduled receiptsProjected on-hand|1010101010101010Planned order receipts150Planned order releases150AxlesGross requirements150Scheduled receiptsProjected on-hand|15151515151515Planned order receipts135Planned order releases135Net Requirements PlanWeek12345678Wheel assemblyGross re53SIME,SHUFE12345678Wheel assembly Gross requirements160Scheduled receiptsProjected on-hand|1010101010101010Planned order receipts150Planned order releases150WheelsGross requirements300Scheduled receiptsProjected on-hand|30Planned order receiptsPlanned order releasesNet Requirements PlanWeek12345678Wheel assemblyGross re54SIME,SHUFE12345678Wheel assembly Gross requirements160Scheduled receiptsProjected on-hand|1010101010101010Planned order receipts150Planned order releases150WheelsGross requirements300Scheduled receiptsProjected on-hand|30303030303030Planned order receipts270Planned order releasesNet Requirements PlanWeek12345678Wheel assemblyGross re55SIME,SHUFE12345678Wheel assembly Gross requirements160Scheduled receiptsProjected on-hand|1010101010101010Planned order receipts150Planned order releases150WheelsGross requirements300Scheduled receiptsProjected on-hand|30303030303030Planned order receipts270Planned order releases270Net Requirements PlanWeek12345678Wheel assemblyGross re56SIME,SHUFEMore complexity/Scheduled receiptsExplanation:Gross requirements are the total demand for wheels.Projected on-hand inventory in week 1 is 30+200 15012345678WheelsGross requirements150120150120Scheduled receipts200Projected on-hand|30Planned order receiptsPlanned order releasesNet Requirements PlanWeekMore complexity/Scheduled rece57SIME,SHUFEMore complexity/Scheduled receiptsProjected on-hand inventory balance at end of week tInventory on hand at end of week t-1Gross requirements in week tScheduled or planned receipts in week t=+12345678WheelsGross requirements150120150120Scheduled receipts200Projected on-hand|3080Planned order receiptsPlanned order releasesNet Requirements PlanWeekMore complexity/Scheduled rece58SIME,SHUFE12345678WheelsGross requirements150120150120Scheduled receipts200Projected on-hand|30808080Planned order receiptsPlanned order releasesNet Requirements PlanWeekMore complexity/Scheduled receipts12345678WheelsGross requiremen59SIME,SHUFELead time=1 week12345678WheelsGross requirements150120150120Scheduled receipts200Projected on-hand|30808080Planned order receiptsPlanned order releasesNet Requirements PlanWeekLot-Sizing Rules:L4LL4L-order the amount needed to fulfill requirementsL4L-order the amount needed to fulfill requirementsLead time=1 week12345678Whee60SIME,SHUFELead Time =1 week12345678WheelsGross requirements150120150120Scheduled receipts200Projected on-hand|30808080Planned order receipts40Planned order releases40Net Requirements PlanWeekLot-Sizing Rules:L4LLead Time =1 week12345678Whe61SIME,SHUFELead Time =1 week12345678WheelsGross requirements150120150120Scheduled receipts200Projected on-hand|30808080000Planned order receipts40150Planned order releases40150Net Requirements PlanWeekLot-Sizing Rules:L4LLead Time =1 week12345678Whe62SIME,SHUFELead Time =1 week12345678WheelsGross requirements150120150120Scheduled receipts200Projected on-hand|308080800000Planned order receipts40150120Planned order releases40150120Net Requirements PlanWeekLot-Sizing Rules:L4LLead Time =1 week12345678Whe63SIME,SHUFELead time=1 week12345678WheelsGross requirements150120150120Scheduled receipts200Projected on-hand|30808080Planned order receiptsPlanned order releasesNet Requirements PlanWeekLot-Sizing Rules:EOQEOQ-order the EOQEOQ-order the EOQLead time=1 week12345678Whee64SIME,SHUFELead time=1 week12345678WheelsGross requirements150120150120Scheduled receipts200Projected on-hand|30808080Planned order receipts116Planned order releases116Net Requirements PlanWeekLot-Sizing Rules:EOQEOQ-order the EOQEOQ-order the EOQLead time=1 week12345678Whee65SIME,SHUFELead time=1 week12345678WheelsGross requirements150120150120Scheduled receipts200Projected on-hand|308080807676Planned order receipts116Planned order releases116Net Requirements PlanWeekLot-Sizing Rules:EOQEOQ-order the EOQEOQ-order the EOQ80+116-120=76Lead time=1 week12345678Whee66SIME,SHUFELead time=1 week12345678WheelsGross requirements150120150120Scheduled receipts200Projected on-hand|308080807676Planned order receipts116116Planned order releases116116Net Requirements PlanWeekLot-Sizing Rules:EOQEOQ-order the EOQEOQ-order the EOQLead time=1 week12345678Whee67SIME,SHUFELead time=1 week12345678WheelsGross requirements150120150120Scheduled receipts200Projected on-hand|30808080767642Planned order receipts116116116Planned order releases116116116Net Requirements PlanWeekLot-Sizing Rules:EOQEOQ-order the EOQEOQ-order the EOQLead time=1 week12345678Whee68SIME,SHUFELead time=1 week12345678WheelsGross requirements150120150120Scheduled receipts200Projected on-hand|308080807676423838Planned order receipts116116116Planned order releases116116116Net Requirements PlanWeekLot-Sizing Rules:EOQEOQ-order the EOQEOQ-order the EOQLead time=1 week12345678Whee69SIME,SHUFE物料需求计算物料需求计算(逐级展开逐级展开)XA(1)C(2)O(1)C201010A1010O提前期提前期=2提前期提前期=1提前期提前期=1批量批量=40批量批量=1批量批量=1X提前期提前期=1批量批量=1时时 段段计划投入量计划投入量计划产出量计划产出量12345678910 1112现有量现有量=0时时 段段计划投入量计划投入量计划产出量计划产出量12345678910 1112现有量现有量=0现有量现有量=0时时 段段计划投入量计划投入量计划产出量计划产出量12345678910 1112计划接收量计划接收量现有量现有量=50时时 段段计划投入量计划投入量计划产出量计划产出量12345678910 1112计划接收量计划接收量 毛毛 需需 求求净净 需需 求求预计库存量预计库存量1010101010101010 510101010101010 51010101020202020102020202010102020202030 30 510101030(40)504040303010 10 0 04040MPSMRP加加工工计计划划采采购购计计划划(40)物料需求计算(逐级展开)XA(1)C(2)O(1)C270SIME,SHUFE多个产品多个产品MRP运算运算A(1)(1)C(2)(2)C(1)(1)Y毛需求毛需求计划接收量计划接收量库存量库存量(前前)库存量库存量(后后)净需求净需求计划产出量计划产出量计划投入量计划投入量毛需求毛需求计划接收量计划接收量库存量库存量(前前)库存量库存量(后后)净需求净需求计划产出量计划产出量计划投入量计划投入量MPS 计划产出量计划产出量MPS 计划投入量计划投入量MPS 计划产出量计划产出量MPS 计划投入量计划投入量批批量量提提前前期期现现有有量量分分配配量量安安全全库库存存低低层层码码物物料料号号1 11 11 11 11 12 22 22 22 20 00 00 00 00 00 00 00 00 00 0XXYCA505040405 510101515当当期期1 11010 5-5-0 0 5 5 5 52020101010-010-0 0 0 0 010101010101010101010101010101010202020202020202020202020202020202 23 34 45 56 67 78 8 5 5 5 515151515 0 0 0 0202020-20-0 0202020201010 0 0 0 01010 5 5 5 5 5 53535353530305050555555555050555555556060 5-5-4545151550505050454545454040 5 55555 5 55050555555555555555555555555 时时 段段2/03 2/10 2/17 2/24 3/033/103/173/242/03 2/10 2/17 2/24 3/033/103/173/24多个产品MRP运算A(1)C(2)C(1)Y毛需求毛需求MP71SIME,SHUFE提前量 现有量 分配量 安全库存 低层码 物料号时段当期123456781XMPS计划产出量7101512MPS计划投入量71015122YMPS计划产出量1020155MPS计划投入量10201552151A毛需求7101512计划接收量PAB初值1588-20-150-12PAB15880000净需求21512计划产出量21512计划投入量215122405102C毛需求1450395计划接收量50PAB初值35717121 21-18 171717PAB35717121 2122 171717净需求280计划产出量40计划投入量40表6-10 MRP运算表2A+YA(1)C(2)C(1)YX提前量现有量分配量安全库存低层码物料号时段当期123456772SIME,SHUFE MRPMRP是是MRPMRP原原理理的的核核心心。本本章章从从MRPMRP概概念念及及内内容容出出发发，分分析析了了MRPMRP的的作作用用与与意意义义，详详细细介介绍绍了了物物料料清清单单的的编编制制和和使使用用，分分析析了了MRPMRP基基本本原原理理、编编制制思思路路和和有有关关计计算算，并并补补充充提提出出了了MRPMRP数数学学模模型型算算法法，最最后后详详细细列列举举了了MRPMRP的的编编制制过过程程以以及及MRPMRP的的使使用用。从从而而对对MRPMRP的工作原理有个全面的了解。的工作原理有个全面的了解。本本 章章 小小 结结 MRP是MRP原理的核心。本章从MRP概念及内容出73SIME,SHUFE物料需求计划思考题s思考题s什么是MRP？它主要是解决什么问题？s请画出MRP的计算流程图？sMRP子系统与哪些子系统有关系？并绘图表示。s您认为MRP的输出报表应有哪些吗？s试着列举一个运算MRP的计算例子s(pp.144,No.12,13)。物料需求计划思考题思考题74