Unified hierarchical control algorithm for constrained non-linear multi-delay interconnected systems: application to production planning

Tzafestas, S; Kapsiotis, G

dc.contributor.author	Tzafestas, S	en
dc.contributor.author	Kapsiotis, G	en
dc.date.accessioned	2014-03-01T01:10:46Z
dc.date.available	2014-03-01T01:10:46Z
dc.date.issued	1995	en
dc.identifier.issn	0911-0704	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/11437
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-0029405446&partnerID=40&md5=7de69b352d5eb08323651be1a6a18f04	en
dc.subject	hierarchical control	en
dc.subject	interconnected systems	en
dc.subject	multi-delay systems	en
dc.subject	integrated production planning	en
dc.subject	automation acquisition	en
dc.subject	process innovation	en
dc.subject.classification	Automation & Control Systems	en
dc.subject.classification	Engineering, Electrical & Electronic	en
dc.subject.classification	Instruments & Instrumentation	en
dc.subject.other	Automation	en
dc.subject.other	Constraint theory	en
dc.subject.other	Decision making	en
dc.subject.other	Hierarchical systems	en
dc.subject.other	Large scale systems	en
dc.subject.other	Mathematical models	en
dc.subject.other	Modernization	en
dc.subject.other	Nonlinear control systems	en
dc.subject.other	Optimization	en
dc.subject.other	Production control	en
dc.subject.other	Productivity	en
dc.subject.other	Sensitivity analysis	en
dc.subject.other	Distributed time delays	en
dc.subject.other	Integrated production planning models	en
dc.subject.other	Multi-delay systems	en
dc.subject.other	Algorithms	en
dc.title	Unified hierarchical control algorithm for constrained non-linear multi-delay interconnected systems: application to production planning	en
heal.type	journalArticle	en
heal.language	English	en
heal.publicationDate	1995	en
heal.abstract	In this paper, a hierarchical control algorithm is presented which unifies several previous algorithms in an effective way so as to handle the problem of constrained, non-linear, multi-delay interconnected systems in its most general form. A class of application models that fall within this category are integrated production planning models, which involve distributed time delays and constraints on both the state and decision variables. These problems are very difficult to solve by centralized optimal control methods even when their dimensionality is very small. Therefore, various hierarchical control optimization algorithms have been developed in the literature by invoking the costate prediction principle which can only partially deal with the problem. For completeness, the paper provides a brief overview of the previous work on the nonlinear hierarchical control problem, as well as a summary of the related production planning literature that deals with the problem of modifying the current production capacity level through R & D expenditures or automation acquisition and modernization. The paper develops an enhanced integrated model, which includes automation acquisition for improving the productivity of labor with inventory and marketing considerations. The unified algorithm of the paper is applied to this model, and a sensitivity study is carried out that reveals the dynamic interactions of the intrinsic components of the model. The managerial implications are also discussed. It thus become clear that the present unified model and optimization technique can be of invaluable help to decision makers for evaluating and testing alternative corporate strategic plans.	en
heal.publisher	Mita Press, Tokyo, Japan	en
heal.journalName	Control, theory and advanced technology	en
dc.identifier.isi	ISI:A1995UC85500008	en
dc.identifier.volume	10	en
dc.identifier.issue	4 pt 4	en
dc.identifier.spage	1737	en
dc.identifier.epage	1761	en