The aim of this paper is an attempt of the simulation of the electromechanical systems with the use of the programming tools included in the modern graphical packages or graphical extensions to the programming languag...
详细信息
The aim of this paper is an attempt of the simulation of the electromechanical systems with the use of the programming tools included in the modern graphical packages or graphical extensions to the programming languages. The advantage of such approach lies in possibility of the simultaneous high quality visualization of the currently obtained results. The possibilities of new graphical packages enable making calculations on the Web platform - it is new and very interesting idea. The proposed solutions can be used both to the educational and presentation tasks.
The article presents an automated assembly station designed by students as part of Project Based Learning. The task of the project was to familiarize with the issues of integration of automation and control elements o...
详细信息
The distributed computer systems applied in industry are usually of the real-time type. In those systems the maximal system response time has to be always well known in order to ensure the functional as well as the sa...
详细信息
The distributed computer systems applied in industry are usually of the real-time type. In those systems the maximal system response time has to be always well known in order to ensure the functional as well as the safety parameters of the system. However, the system response time may be subject to change as a result of system development during its life cycle. As the given system grows, the response time lengthens. So it happens that in order to satisfy the real-time constraints, the response time T RES has to be reduced after the system development. One of the factors that have an influence on the T RES time, is the automata cycle of the communication system nodes. The shorter the automata cycle is, the more frequent is the data exchange between the CPU module and the communication module of the given system node, which improves the T RES value. However, having the node's application well implemented, shortening of the automata cycle may seldom be done by the application optimization. Then, the only solution would be to temporary shorten the automata cycle by execution of some of the most crucial parts of the user application. In this paper, a method for shortening the automata cycle is described.
The cultivation of Escherichia coli bacteria is widely used by geneticists and biopharmaceuticals to produce medicines and vaccines. In such industries, Bioprocesses are known by their harsh environment and very expen...
详细信息
Application of piezoelectric elements to active reduction of bending vibrations of the beams is known well in the literature. During vibrations, an external excitation may vary in the time domain, including its form i...
详细信息
Application of piezoelectric elements to active reduction of bending vibrations of the beams is known well in the literature. During vibrations, an external excitation may vary in the time domain, including its form in the frequency domain. It should have influence on their response. The problem of proper selection of the control parameter in the control algorithm used to reduce vibrations arises. In the article, simulations of a control algorithm based on detection of bending moment are analytically tested. The solution for the transient type of vibrations are obtained by the finite difference method (FDM). Analysis for two separated natural modes was performed. The analysis shows the possibility to design a control algorithm based on detection of the bending moment.
This study is an attempt to take advantage of a cerebellar model to control a biomimetic arm. The cerebellar controller is a modified MOSAIC model which adaptively controls the arm. We call this model ORF-MOSAIC (Orga...
详细信息
The paper presents a method for estimation of converter drive parameters. This estimation encompassed three types of drives, i.e. a static Scherbius drive, a drive with a brushless direct current (BLDC) motor and a dr...
详细信息
The paper presents a method for estimation of converter drive parameters. This estimation encompassed three types of drives, i.e. a static Scherbius drive, a drive with a brushless direct current (BLDC) motor and a drive with a voltage inverter. For drive modelling and parameter estimation, the author implemented original programmes written in FORTRAN. As well as these, the paper describes an objective function applied for the estimation. The author also compares gradient and gradientless methods, which are applied for minimization of the objective function. Finally, the author explains the estimation results for example drives, focusing on the coincidence of theoretical and empirical waveforms. The abovementioned procedure led to the general rule, which facilitates estimation efficiency.
Business forecasting uses statistic tools more or less sophisticated that relay on the observation values from the past, regarding the activity level, and calculates predictions for the future. The majority of the met...
详细信息
Business forecasting uses statistic tools more or less sophisticated that relay on the observation values from the past, regarding the activity level, and calculates predictions for the future. The majority of the methods can calculate forecast without any problem and with high accuracy when the data has a satisfying quality. This paper describes our results in implementing the forecast in general and highlights the cases with sporadic data, cases with a high forecasting need, that are common in real life.
In this paper, the quadratic buck converter (QBC) is proposed as competitive alternative to implement a battery charger. Since, QBC is a high order system, the required control is designed to follow the conventional c...
详细信息
To support mobility, mobile devices are powered by batteries with limited energy. Energy efficiency becomes one of the most important issues in wireless networks. Based on IEEE 802.11 infrastructure wireless LANs, we ...
详细信息
暂无评论