Journal ArticleDOI
Linear-Quadratic Optimal Control of Periodic-Review Perishable Inventory Systems
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This work applies formal methodology of discrete-time dynamical optimization to solve the optimal control problem analytically, and proposes a controller that outperforms the classical order-up-to policy in terms of higher service level, smaller holding costs, and smaller order-to-demand variance ratio.Abstract:
In this brief, the problem of inventory control in systems with perishable goods is addressed from the control-theoretic perspective. In the analyzed setting, the deteriorating stock used to fulfill unknown, time-varying demand is replenished with delay from a remote supply source. In order to eliminate the threat of the bullwhip effect (amplified demand variations translated to the ordering signal), we propose to use the benefits of linear-quadratic optimal control. In contrast to the earlier approaches to inventory management of perishable goods, mainly based on heuristics and static optimization, we apply formal methodology of discrete-time dynamical optimization, and solve the optimal control problem analytically. This allows us to formulate and strictly prove a number of advantageous properties of the designed controller, e.g., we demonstrate that it ensures full demand satisfaction in the system with arbitrary delay and any bounded demand pattern with unknown statistics. The proposed controller outperforms the classical order-up-to policy in terms of higher service level, smaller holding costs, and smaller order-to-demand variance ratio.read more
Citations
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Journal ArticleDOI
Literature review of deteriorating inventory models by key topics from 2012 to 2015
TL;DR: An up-to-date review of perishable inventory models, but also of the joint key topics of publications from January 2012 until December 2015 in the research area of deteriorating inventory models is given.
Journal ArticleDOI
Discrete-Time Control of Production-Inventory Systems With Deteriorating Stock and Unreliable Supplies
TL;DR: This paper addresses the problem of establishing an efficient (fast yet robust) inventory management policy for production-inventory systems in which the stock deteriorates with time and the replenishment process is unreliable and a new compensation mechanism is proposed.
Journal ArticleDOI
LQ Optimal and Robust Control of Perishable Inventory Systems With Multiple Supply Options
TL;DR: An analytical framework for studying the dynamics of perishable inventory systems is developed using control-theoretic approach and the analytically derived suboptimal controller satisfies positivity constraints and ensures full demand satisfaction for any bounded demand pattern.
Journal ArticleDOI
Discrete inventory control in systems with perishable goods – a time-delay system perspective
TL;DR: A new dead-time compensation mechanism is developed and non-linear control law synthesised and the proposed control scheme is proved robust with respect to arbitrary demand and delay variations.
Journal ArticleDOI
A Distributed Model Predictive Control Strategy for the Bullwhip Reducing Inventory Management Policy
Dongfei Fu,Hai-Tao Zhang,Ying Yu,Clara-Mihaela Ionescu,El-Houssaine Aghezzaf,Robin De Keyser +5 more
TL;DR: A distributed MPC strategy that aims at finding the Nash equilibrium where the controller of each subsystem communicates with other ones in the presence of noncooperative interaction and strong coupled inputs due to the ordering decisions is proposed.
References
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Book
Discrete-time control systems
TL;DR: Discrete-time control systems, Discrete- time control systems , مرکز فناوری اطلاعات و ا�ل squares رسانی, کسورزی.
Journal ArticleDOI
Quantifying the Bullwhip Effect in a Simple Supply Chain: The Impact of Forecasting, Lead Times, and Information
TL;DR: In this article, the authors quantify the effect of the bullwhip effect on simple two-stage supply chains consisting of a single retailer and a single manufacturer and demonstrate that the effect can be reduced by centralizing demand information.
Book
Foundations of Inventory Management
TL;DR: In this article, one item with a constant demand rate and time-varying demands is described. But, the model is based on a single item with constant lead times.
Journal ArticleDOI
Recent trends in modeling of deteriorating inventory
TL;DR: The motivations, extensions and generalizations of various models in each sub-class have been discussed in brief to bring out pertinent information regarding model developments in the last decade.
Journal ArticleDOI
Perishable Inventory Theory: A Review
TL;DR: This paper reviews the relevant literature on the problem of determining suitable ordering policies for both fixed life perishable inventory, and inventory subject to continuous exponential decay and considers both deterministic and stochastic demand for single and multiple products.