Gábor Bohács

• Budapest University of Technology and Economics

Intelligence and complexity are increasingly demanded requirements during decision-making. In our former research a software framework has been developed, which enables implementation of process planning in a serious game environment. This method has an advantage in terms of increasing complexity and knowledge retention. Current paper first surveys...

Current trends in the industrial companies are focusing on the further development of cyber-physical systems and the possible integration of human and machine intelligence to achieve robust and sustainable solutions. Cost is an additional important factor which have to be considered as well. This paper first surveys possibilities and problems in te...

One of the biggest challenges today is to make traditional systems more sustainable. Physical Internet (PI, π) based logistics systems provide one of the most defining solutions. In our opinion, it is worthwhile to deal with the intralogistics conversion of the Physical Internet because traditional systems can no longer operate with sufficient effi...

Detection and pose estimation of pallets are critical phases in the operation of automated guided vehicles. In this paper, we introduce a novel pipeline for accurate localization based on only a single camera. We utilize the popular YOLO detector, object, and camera models to achieve better performance than the state of the art techniques.

In our previous research, we have identified the components of the Physical Internet (PI, π) that are required to build and operate a Physical Internet based network. The components we defined include specific physical units, such as the π-container or the π-hub. In addition, components of management and information systems were included such as Op...

Abstract Physical Internet based supply chains create open, global logistics systems that enable new types of collaboration among participants. The open system allows the logistical examination of vehicle technology innovations such as the platooning concept. This article explores the multiple platoon collaboration. For the reconfiguration of two p...

In this paper a comparison is presented for different battery charging concepts of Automated Guided Vehicle (AGV) systems using simulation models. In the focus of our investigation was, what kind of benefits can Inductive Power Transfer (IPT) for an AGV-based material handling system have, which is increasingly applied today. The proper application...

For the sustainability of future logistics systems, Physical Internet is one of the most determined idea. Initial solutions and ideas exist, but the development in this area is far from complete. In our opinion, vehicle technology trends such as interconnected, autonomous vehicles and the platooning system are an important opportunity for the devel...

The Physical Internet (PI or π) is one of the most decisive ideas for future logistics systems. The idea behind it is to implement logistic systems which apply the principles of Internet information flow. Simultaneously technological innovations of Industry 4.0 have also appeared. Our current research deals with the applicability of the tools of In...

The concept of Physical Internet (PI) causes fundamental changes in conventional supply chains. In order to increase sustainability, new methods need to be added to the existing functionality of PI. The principles of lean attempt to reduce the waste on the systems by applying a wide range of methods. Our approach is to analyze if PI and lean manage...

Intralogistics makes up an important part of the supply chains some call it the ‘heart of the logistics’. Lately the appearance of cyber-physical systems has been caused significant changes in this area, enabling not only a set of interconnected devices, but let new concepts to be implemented. This paper presents a novel control structure between t...

Simulation modelling has an ever increasing importance for complex systems. Manufacturing and related material flow or logistic systems are typical fields of application. Latest trends such as Cyber-physical systems and Industry 4.0 give a significant boost to simulation modelling as these require a digital model of the system. Complex manufacturin...

The process description languages are used in the business may be useful in the optimization of logistics processes too. The process description languages would be the obvious solution for process control, to handle the main sources of faults and to give a correct list of what to do during the logistics process. Related to this, firstly, the paper...

Simulation techniques are almost indispensable in the analysis of complex systems. Materials- and related information flow processes in logistics often possess such complexity. Further problem arise as the processes change over time and pose a Big Data problem as well. To cope with these issues adaptive simulations are more and more frequently used...

Construction processes can be implemented in most cases using various sorts of equipment. These can move along various paths, over the construction site from one job to another or during their operation. The proper choice of their path is a basic aspect for the planning of optimal processes. This paper is devoted to this problem. First it surveys s...

The execution of construction projects such as a highway construction or the elevation of a new bridge is a complex, highly equipment-intensive process and are subject to many different uncertainties. This is very similar to the manufacturing execution level in production systems where predefined productions plans and schedules cannot be completely...

This paper presents the development of a new construction logistics model with a new point of view: we want to integrate related experiences from the practice of other industries with the specialties of construction logistics processes. It gives a detailed description on the proposed model. Furthermore, the basics of a demonstration physical test s...

Application of agent based approaches is frequent in systems with artificial intelligence. This method has been used in simulations as well, however application in this field is rather novel. The paper surveys formation possibilities of agent based structures in the simulation of an example material flow systems. Further, considerations are also pr...

Building processes can be implemented in most cases using various equipment. Proper choice from them is a basic aspect for the planning of optimal processes. This paper is devoted to this problem. First it surveys some useful methods for the equipment choice for the literature. Then it presents the developed fuzzy inference system via two examples:...

Nowadays, modern companies operate in a common logistics network. In a modern approach, these networks of companies are called virtual enterprises, whose main purpose is the maximal fulfillment of customer needs and process optimization. The electronic freight and warehouse exchange is a good basis for building virtual enterprises, and that may be...

This paper summarizes and analyses simulation techniques for material flow systems. The analysis deals with primary the applicability of various simulation methods for the purpose of adaptive simulation models.

Today simulation is an essential element during planning and analyzing processes of material flow systems. Usability depends on modeling capability of the physical system. This paper describes a camera-based system, which enables data collection in different use cases. Systems advantages and disadvantages will be discussed and the use cases will be...

This paper presents a formation control of multiple mobile robots based on the leader-follower technique. The control law of the leader robot is designed to track a specified reference path under a nonholonomic constraint of wheeled mobile robots, while that of the follower robot is designed to follow the leader robot with keeping the specified rel...

This paper presents a formated navigation with obstacle avoidance in which a modified leader-follower technique is combined with reactive collision avoidance behaviors. This paper indicates a couple of problems in which the obstacle avoidance is embedded in formated navigation: one is the singularity of the leader robot on the tracking control and...

This paper presents a formated navigation based on the leader-follower approach. In this approach, the control law of the follower robot includes the states of the leader robot. This is a drawback for implementing the control laws on real mobile robots. To overcome this drawback, this paper proposes a new follower's control law, called the self-mad...

Mobil robots are commonly used in various application fields. Military projects, space research, deep-sea research, and various robots at work and at home belong to the most significant applications. Material handling and warehousing are also possible environment. In these applications mobile robots are used as autonomous transporting vehicles. How...

The damaged barcodes cause problems particularly in production and warehousing, because in many cases their identification with conventional barcode readers is not possible. Here we deal with only a special part of damaged barcode identification. In this paper a prediction system is presented, that analyses the regularities of the material flow. Th...