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In the 20th century, there has been a significant development in logistics systems owing to market globalisation. From this perspective, our study focuses on designing novel models of inventory systems to reflect these real-time systems with improved accuracy and eventually design optimal control systems. Many mathematical inventory models lack det...
This paper presents an application of a hybrid algorithm for detection and recognition of railway signalling. The proposed algorithm has been implemented in a safety application which supports train drivers work. The algorithm is dedicated to performing the tasks of early warning about events related to signalling at railway infrastructure. Simulat...
In this paper, low cost air levitation project is presented as a teaching tool for control engineering. Air levitation control system is built as a classroom demonstration device and laboratory stand. The laboratory stand provides a new plant to control for students of control engineering. It is comprised of Arduino Mega 2560, plexiglass, metal ele...
In this paper, we use a mathematical model of a inventory system with time-varying delivery delay and three control systems in order to compare their properties for the goods flow optimization problem in the inventory systems. Structures of the chosen control systems are based on mathematical discrete equations: a periodic inventory system with ada...
This paper presents a constrained Particle Swarm Optimization (PSO) algorithm for mobile robot path planning with obstacle avoidance. The optimization problem is analyzed in static and dynamic environments. A smooth path based on cubic splines is generated by the interpolation of optimization solution; the fitness function takes into consideration...
The optimization of multi-objective problems is an area of important research. The importance attained by this type of problems has allowed the development of multiple algorithms. To determine which multi-objective algorithm has the best performance with respect to the problem of goods flow in the inventory, in this article an experimental comparis...
Inventory optimization is critical in inventory control systems. The complexity of real-world inventory systems results in a challenging optimization problem, too complicated to solve by conventional mathematical programing methods. The aim of this work is to confront: a perpetual inventory system found in the literature and inventory system with P...
Modern inventory control is anchored in vastly advanced and complex models, which require considerable computational efforts. In this paper, we use a mathematical model of an inventory system with large supply delay and control system in order to optimize goods flow in inventory systems. The paper proposes the use of automatic control systems to co...
This work includes analysis of the literature related to issues in the inventory control. On the basis of the analysis of the inventory system, we proposed mathematical model and then made its initial verification in the way of computer simulation in Matlab / Simulink for different scenarios of the market behavior. The simulation was designed to re...
I wonder if there is any public data base with the data about blood demand prediction for the next years (any country)? For example for blood of type: O+.
Thank you in advance for help.
As for my curiosity, I have two questions:
1) Is there research concerning customers preferences for buying perishable products? For example, where can I find conclusions like 'more people buy some certain fruit/vegetable of age 3 days than ages 1 day and 2 days because it tastes better when it is soft etc.?'
2) Is there a possibility to find a set of data including the demand for products with its age (e.g fruits, dairy etc.)?
Thank you for help in advance.
I am student of Automatic Control and Robotics and I would like to take part in international competitions associated with Automation, desiging of laboratory stands and for example some competitions for young enginners, constructors, some competitions with engineering thesis etc.
Does anyone know where can I find this kind of contests? If yes, please provide me an information about locations and dates. Thank you for reply.
The main goal of this project is to develop a new control system for uncertain perishable inventory systems using methods of artificial intelligence and evolutionary algorithms. The first results of this research was published in: https://authors.elsevier.com/a/1cajI1I2r-Av5f Ewelina Chołodowicz, Przemysław Orłowski, Development of new hybrid discrete-time perishable inventory model based on Weibull distribution with time-varying demand using system dynamics approach, Computers & Industrial Engineering, Volume 154, 2021, 107151, ISSN 0360-8352, https://doi.org/10.1016/j.cie.2021.107151.
In this paper the task of stabilizing Furuta pendulum in upright position is solved by fractional order based linear quadratic regulator (FO LQR). The nonlinear model of pendulum includes uncertainty of motor torque. Evaluations of state-feedback gain are optimized by genetic algorithm. A comparative analysis, including simulations and experiments, whereby the advantages and effectiveness of the proposed fractional regulator is included. Controllers are implemented in the simulation using Matlab/Simulink and obtained results show advantages of fractional order controllers in stabilizing the uncertain Furuta pendulum system in upright position.
In this paper, low cost air levitation project is presented as a teaching tool of control engineering. Air levitation control system is built as a classroom demonstration device and laboratory stand. The laboratory stand provides a new plant to control for students of control engineering. It is comprised of Arduino Mega 2560, plexiglass and metal elements and 3D printed parts.