供应链中库存波动的系统辨识和控制

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2、I页西南交通大学博士研究生学位论文变化，在需求变化较快的情况下能够滤除无效需求波动，从而减少订货量波动放大的产生。供应链库存波动的系统辨识和控制是一个多学科交叉的课题，因此本论文着力从多个学科的理论和方法研究供应链波动的问题。利用系统动力学的观点考虑供应链波动原因，通过Z．变换将离散时间函数转换成复域函数，利用自动控制工程领域传递函数表示订货量输出与需求量输入的关系以及通过比例调节反馈控制减少订货量随需求量变化波动的幅度，并且通过仿真技术定量说明这种波动程度、传递过程以及波动控制的效果。关键词供应链：库存波动；传递函数；幅频特性；信息共享西南交通大学博士研究生学位论文第lII页Abst

3、ractRecentlysupplychainmanagementbecomemoreandmorepopular,itisintegrationmanagementmodethatsurroundcoreenterprise，whichisfunctionalnetworkstructurethatiscomposewithsupplier,manufacturer,wholesalerandconsumerbyinformationflow,materialflowandfinancialflow．Supplychainmanagementrequireeveryenterprisei

4、nsupplychainnotonlypayattentiontooptimizethemselvesproductionandinventorybutalsocaretooptimizeproductionandinventoryofallsupplychain．Becausethereisalotofsubjectiveandobjectivereasoninthecourseofenterpriseproducingandcontrollinginventoryinrealsupplychain，itisobviousproblemthatsupplychaininventoryfl

5、uctuationscontinuallyenlargeupstreamsupplychain，thisproblemisobservedfromthephenomenonthatthechangeoffinalconsumer’Sdemandquantitymakeproductionororderquantityfluctuationofupstreamenterprisevarymoreandmoreacutewithorderpleasetoupstreamenterprise，whichincreaseproductionandstorageadaptationcostsaswe

6、llasincreasingoverstockcostandoutofstockcostofupstreamenterprise．Thisproblemaffectsbadlyefficiencyandeffectofwholesupplychainandeveryenterpriseinsupplychainoperating．Thus，howtosystematicallydifferentiateandanalysesandcontrolinventoryfluctuationofsupplychainisthekeyproblemthatreducesupplychaininven

7、toryvarianceamplification．Thispapersystematicallyresearchsupplychaininventoryfluctuationproblem．thesubjectiveandobjeetivefactorstllataffectinventoryvarianceamplificationisfoundbyqualitativeanalysisandquantitativeanalysisorderprocessofenterpriseinsingle-echelonsupplychain，andhowtothisrelatedfactors

8、affectinventoryvarianceamplification．Howtoinventoryvarianceamplificationtransformsupstreamsupplychainandhowtoquantifyextentofinventoryvarianceamplificationisshownbyanalyzingorderprocessofmulti—echelonsupplychaina