Center for Applied Cybernetics

Ostrava, Czech Republic

Center for Applied Cybernetics

Ostrava, Czech Republic
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Krejcar O.,Center for Applied Cybernetics | Macecek M.,Center for Applied Cybernetics
ICMEE 2010 - 2010 2nd International Conference on Mechanical and Electronics Engineering, Proceedings | Year: 2010

The problem we would like to discuss and solve is based on a remote controlling of created packages containing predefined components with a predefined numbers of these components. In principle the problem acts as a check out control problem. By the help of mobile device with integrated bar code scanner an application for such mobile device can be developed as a remote client of server, which contains a database with predefined properties, numbers of packages, etc. A web services and mobile client application was created using a Microsoft Visual Studio 2008. © 2010 IEEE.


Krejcar O.,Center for Applied Cybernetics | Jirka J.,VSB - Technical University of Ostrava | Janckulik D.,VSB - Technical University of Ostrava
ICMEE 2010 - 2010 2nd International Conference on Mechanical and Electronics Engineering, Proceedings | Year: 2010

Proactive principle can be used not only in large distributed solution for medical centers, but it can be found usable in a many other solutions. One of them we found in an application to allow for people have a happy wake up. A mobile device application was developed to solve a problem of bad wake up at morning for all the people. Sleep is a complex process regulated with our brain and as such is driven by 24 hour biological rhythm. Our biological clocks are controlled by chemical substances that are mostly known to us. wakeNsmile application is developed to react on users declared request in form of happy wake up at predefined time (Fig. 1). The time defined for alarm is however the latest possible time to wake up of user. We are trying to detect a body state in which the user is most able to wake up with a smile. Time period for detection analysis of state phases is declared to 30 minutes. A Fast Fourier Transformation (FFT) and some other sophisticated methods are used for it. © 2010 IEEE.


Krejcar O.,Center for Applied Cybernetics | Frischer R.,VSB - Technical University of Ostrava
2010 International Conference on Applied Electronics, AE 2010 | Year: 2010

This paper deals with a possibility of non-destructive diagnostics of solid objects by software analysis of vibration spectrum by accelerometers. By a use of MATLAB platform, a processing and information evaluation from accelerometer is possible. Accelerometer is placed on the measured object. The analog signal needs to be digitized by a special I/O device to be processed offline with FFT (Fast Fourier Transformation). The power spectrum is then examined by developed evaluating procedures.


Krejcar O.,Center for Applied Cybernetics | Frischer R.,VSB - Technical University of Ostrava
ICMEE 2010 - 2010 2nd International Conference on Mechanical and Electronics Engineering, Proceedings | Year: 2010

In this paper is described possibility of nondestructive diagnostics of solid objects by software analysis of vibration spectrum. With using platform MATLAB, we can process and evaluate information from accelerometer, which is placed on the measured object The analog signal is digitized by special I/O device dSAPCE CP-1104 and then processed offline with FFT (Fast Fourier Transform). The power spectrum is then examined by developed evaluating procedures and individual results are displayed in bar graph. When we take a look on results, there is an evidently correlation between spectrum and examining object (inner defects). © 2010 IEEE.


Michiels W.,Catholic University of Leuven | Vyhlidal T.,Center for Applied Cybernetics | Zitek P.,Center for Applied Cybernetics
Journal of Process Control | Year: 2010

A novel method for the determination of controller parameters in a broad class of linear control systems affected by time-delays is presented. This method is based on an appropriate shaping of the spectrum of the closed-loop system. Its application follows two steps. First, a number of rightmost poles, smaller than the number of controller parameters, are directly assigned. This leads to constraints on the controller parameters. By using algebraic techniques a complete parametrization of all controllers satisfying these constraints is obtained. In the second step, the remaining degrees of freedom in the parameter space are used to shift the remaining part of the system spectrum as far to the left as possible. This corresponds to an optimization problem involving a nonsmooth, non-convex objective function. An extensive real-plant example is presented to demonstrate the effectiveness and applicability of the procedure. © 2009 Elsevier Ltd. All rights reserved.


Waszniowski L.,Czech Technical University | Waszniowski L.,Center for Applied Cybernetics | Hanzalek Z.,Czech Technical University | Hanzalek Z.,Center for Applied Cybernetics | Doubrava J.,Aerospace Vodochody A.s.
Journal of Aircraft | Year: 2011

The validation process of an aircraft control system, the yaw damper controller (YDC) with hydraulic actuators through hardware-in-the loop (HIL) simulation was investigated. The yaw damper is a device sensing the yaw rate of the aircraft via a fiber optic gyro (FOG) and compensating its oscillations via hydraulic actuators deviating, the rudder. The direct mechanical linkage of the pedals with the rudder is maintained and the driving force of the YD actuators is mechanically mixed with the pilot's driving force. The serial actuator (SA) is used to add the yaw damper (YD) actuation needed to compensate the yaw oscillations to the rudder deflection. The YDC measures the force in the pedals via the force sensor (FS) and drives the PA to reach the defined force. Backlashes, friction, and other nonlinearities in the closed loops can cause undesirable oscillations in the system. The real-time communication between sensors, actuators, and SimTarget and their synchronization is provided via the CAN bus and CANopen protocol.


Musil K.,VSB - Technical University of Ostrava | Janckulik D.,VSB - Technical University of Ostrava | Motalova L.,VSB - Technical University of Ostrava | Krejcar O.,Center for Applied Cybernetics
2010 2nd International Conference on Computer Engineering and Applications, ICCEA 2010 | Year: 2010

This article undertakes the most important parts of hardware platform of our Biotelemetric system. It describes the way of use of standard devices from commercial manufacturers, such as embedded PCs, PDAs and wireless ECG unit BlueECG communicating via bluetooth. Suggests major problems and disadvantages of their use and offers possible solutions in the form of construction of our own purpose-built equipment. Whether in the form of small auxiliary hardware and design options EKG units optimized for low power consumption and collaboration with mobile devices with limited computing capabilities. © 2010 IEEE.

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