作者：
János NacsaImre PanitiSándor KopácsiCIM Laboratory
MTA SZTAKI Institute for Computer Science and Control Hungarian Academy of Sciences (ATOMKI) Budapest Hungary MTA SZTAKI
Department of MOGI Mechatronics Optics and Engineering Informatics Budapest University슠of슠Technology슠and슠Economics Hungary MTA SZTAKI
Dennis Gabor College Hungary
Incremental Sheet Forming is an advanced manufacturing technology in the recent years. In a lot of cases the process requires the synchronized cooperation of two machines. The complex operation was modelled in a virtu...
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Incremental Sheet Forming is an advanced manufacturing technology in the recent years. In a lot of cases the process requires the synchronized cooperation of two machines. The complex operation was modelled in a virtual environment, where the cyber objects were deeply connected with the real objects. The result of this virtual cooperation resulted some cognitive observation that is also published in this paper.
Technological progress has allowed the emergence of new approaches to teaching. The virtual instruments development has led to lessons based on virtual experiments - applications that simulates real-life phenomenon an...
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ISBN:
(纸本)9789898425157
Technological progress has allowed the emergence of new approaches to teaching. The virtual instruments development has led to lessons based on virtual experiments - applications that simulates real-life phenomenon and are specially designed for students use. Many virtual experiments can be obtained free of charge from the Internet, but their use in the classroom involves more than these tools availability. It involves the use of new teaching techniques and training materials. Through a European project, hundreds of teachers of sciences were trained to develop and implement virtual experiments in the classroom. This paper presents some of the expectations of teachers before the start of the training course and their opinion after the class implementation.
Abstract In this paper, the relative position parameters of the target spacecraft are obtained by using the vision measurement and the target maneuver positions are calculated through the isochronous interpolation met...
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Abstract In this paper, the relative position parameters of the target spacecraft are obtained by using the vision measurement and the target maneuver positions are calculated through the isochronous interpolation method. Furthermore, new switch control laws under constant thrust are designed for active collision avoidance maneuver of the chaser along a specified trajectory. The switch control laws are obtained based on the acceleration sequences and the working times of thrusters in three axes which can be respectively computed by the time series analysis method. The perturbations and fuel consumptions are addressed during the computation of the working times. The simulation results show that the constant thrust maneuver can effectively guarantee the chaser maneuvering along the specified trajectory.
Abstract In this paper, a risk-sensitive filter for a class of jump Markov nonlinear systems is proposed. By using a set of weighted cubature points to approximate the intractable risk-sensitive recursions, the propos...
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Abstract In this paper, a risk-sensitive filter for a class of jump Markov nonlinear systems is proposed. By using a set of weighted cubature points to approximate the intractable risk-sensitive recursions, the proposed filter could exhibit improved numerical stability with respect to the derivation of the square-root covariance, for which the unscented transform technique might halt the operations due to the presence of non-positive definite covariance. The performance of the proposed filter is illustrated through a simulation study of tracking a land vehicle with maneuvers.
An adequate collaboration between the partners within a multinational project is essential for a successful project deployment. The activities developed by the project partnership involve usually decisions that collab...
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ISBN:
(纸本)9783902661913
An adequate collaboration between the partners within a multinational project is essential for a successful project deployment. The activities developed by the project partnership involve usually decisions that collaboratively must be taken. Although the e-mail is the most used technology for distance collaboration, the team work within a multinational project involves collaborative activities and the decisions associated to it that only the e-mail cannot support. This paper presents several collaborative work examples and decision scenarios which are specific to many European funded multinational educational projects. The analysis of these scenarios shapes a list of features that a decision support system must provide in order to facilitate the collaborative activities developed in the frame of multinational projects.
This paper presents a Gaussian mixture probability hypothesis density (GM-PHD) smoother for tracking multiple maneuvering targets that follow jump Markov models. Unlike the generalization of the multiple model GM-PHD ...
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This paper presents a Gaussian mixture probability hypothesis density (GM-PHD) smoother for tracking multiple maneuvering targets that follow jump Markov models. Unlike the generalization of the multiple model GM-PHD filters, our aim is to approximate the dynamics of the linear Gaussian jump Markov system (LGJMS) by a best-fitting Gaussian (BFG) distribution so that the GM-PHD smoother can be carried out with respect to an approximated linear Gaussian system. Our approach is inspired by the recognition that the BFG approximation provides an accurate performance measure for the LGJMS. Furthermore, the multiple model estimation is avoided and less computational cost is required. The effectiveness of the proposed smoother is verified with a numerical simulation.
In this paper, an adaptive iterative learning control (ILC) scheme is proposed for trajectory tracking of uncertain delay systems based on model matching technique. The reference model is a delay system operating over...
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In this paper, an adaptive iterative learning control (ILC) scheme is proposed for trajectory tracking of uncertain delay systems based on model matching technique. The reference model is a delay system operating over in a finite time interval. An iterative model matching controller is designed and an iteration domain adaptive law is chosen to estimate the unknown parameters. It shows that the model matching technique can be applied in a straightforward method to ILC problem. A simulation example is included to illustrate the designed scheme.
The paper developed a block-wise approach for ICA algorithms which can improve the computational efficiency of ICA without the degradation of performance for the separation of biomedical signals. Source signals includ...
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In the paper trajectory tracking algorithm including collision avoidance behaviour is presented. Dynamic properties of the robots are taken into account. Obstacles are assumed to be convex. Artificial potential functi...
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Environmental monitoring is one of the most classic applications of Wireless Sensor Networks (WSN). Itaipu hydroelectric dam creates a unique scenario for the develop ment of this type of WSN with more than 200 square...
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Environmental monitoring is one of the most classic applications of Wireless Sensor Networks (WSN). Itaipu hydroelectric dam creates a unique scenario for the develop ment of this type of WSN with more than 200 square kilometers of natural forests. In this context, FLORA project is aimed at developing a habitat monitoring WSN to be deployed in the Zoo of Itaipu and in the Tati Yupi Biological Refuge. The de ployment includes more that 50 nodes. The paper describes the two scenarios of this ambitious and challenging application and presents the routing and topology control protocol developed in the framework of FLORA. The protocol was designed to fulfil the requirements of the application, extend the lifetime of the network, and to adapt to continuous nodes deployment and potential failures. It is based in several protocols already reported in the literature. The novel proposal is a reliable and lightweight routing protocol for wireless sensor network based on vector distance, collection tree, and energy aware distance vector protocols. The main idea is that each node of the network finds the shortest path to the sink with the best link quality, in order to guarantee the delivery of data to the sink despite the dynamic and lossy nature of wireless transmissions. The functionality of this novel protocol is presented as well as the results based on a TinyOS implementation and traditional WSN nodes (motes) including a CC2420 radio.
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