Open AccessDiscrete inventory control in systems with perishable goods – a time‐delay system perspective
Author(s) -
Ignaciuk Przemysław
Publication year - 2014
Publication title -
iet control theory and applications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.059
H-Index - 108
eISSN - 1751-8652
pISSN - 1751-8644
DOI - 10.1049/iet-cta.2013.0636
Subject(s) - inventory control , computer science , compensation (psychology) , stock (firearms) , control theory (sociology) , lead time , context (archaeology) , control (management) , operations research , economics , operations management , mathematics , engineering , artificial intelligence , mechanical engineering , psychology , paleontology , psychoanalysis , biology
This study considers the problem of providing efficient control of periodic‐review production–inventory systems with perishable goods. The stock storage and replenishment is modelled as a first‐order process with delay subject to external perturbations. The study investigates formally the classical delay compensation mechanisms used in inventory control and shows deficiencies of inventory position and Smith predictor‐based concepts in the context of systems with deteriorating stock. Then, a new dead‐time compensation mechanism is developed and non‐linear control law synthesised. The proposed control scheme is proved robust with respect to arbitrary demand and delay variations.