Advances in Mechatronics '11
Special issue for conference AiM’11
Between December 7 th to 9 th 2011 the conference Advances in Mechatronics ‘11 was held oh the Faculty of Military Technology of University of Defence.
The most important articles were chosen and published in the Cybernetic Letters, the partner of the conference. 2012-04-24 07:53
Wheeled Chassis - Kinematic Design of Handling Platform
Jiří FISCHER
Abstract
The article deals with the problem of mechanism’s kinematics of a handling platform which is intended for a manipulation with sensors of wheeled chassis. It solves a selection of a suitable kinematic chain of the mechanism, and for the selected scheme it solves kinematics of the end of the chain’s motion. To solve the kinematic variables the matrix method of calculation has been used.
Keywords
Robot, Kinematics, Sensor
Full paper 2012-04-13 10:10
Minimal Energy Effect
Dusan MAGA, Sona PAVLIKOVA
Abstract
The basic ideas, as well as the possible way of technical interpretation of the Principle of MinimalEnergy Effect will be presented in the paper, followed by practical examples. Based on these the reader will beable to follow the principle and build an understandable theory on professional numerical methods basics, theirspossible advantages and disadvantages and shortcomings. The main idea presented in the paper is based on verysimple example – motion in the gravitational field of the earth. The paper is based on [1] presented during 6thAdvances in Mechatronics 2011 in Brno, fulfilled with detailed results of authors yet unpublished.
Keywords
Numerical methods, Applied mathematics, Minimal energy effect, Education
Full paper 2012-04-13 09:24
Business Process Modeling and Simulation with the Stress on the Roles in Process
Miroslav MARTINEK, Michal MRAJCA, Zdenek BRABEC
Abstract
The paper introduces an original approach for role-based business process modelling, simulation and analysis. A developed process for modelling and simulation is suitable for systematic construction of the simulation models and their efficient and effective improvement.
Keywords
Business Process Modelling, Business Process Simulation
Full paper 2012-04-12 09:41
Research of Conductive Currents in Traction Drive with PMSM
Radovan DOLEČEK, Jaroslav NOVÁK, Ondrej ČERNÝ
Abstract
The paper deals with the significant results of the research of the conductive current harmonic spectrum in traction drive with permanent magnet synchronous motors (PMSM). The research was done in the experimental workplace with a real traction drive for wheel vehicles. The spectrums were analyzed by the specialized device on the basis of a central measuring station. The knowledge of marked subharmonic components of stator winding currents is the most significant finding of this research. The frequencies of these components are given by frequency multiples of mechanical speeds. The subharmonic components also pass to DC current at the traction inverter input site. This fact is particularly important from the viewpoint of legislative requirements to electromagnetic compatibility (EMC) of drive with railway interlocking devices.
Keywords
Harmonic Spectrum, Current, Traction Drive, Converter, Component
Full paper 2012-04-11 21:30
CAN Messages Transmission Diagnostic Analysis of Avionic System
Jiří PAŘÍZEK, Přemysl JANŮ
Abstract
Digital communication bus Controller Area Network (CAN) that was originally designed for the automotive industry considering its excellent features has become to apply in the aerospace industry. In general one of the requested properties of the aerospace products is
high dependability and maintainability. The paper summarizes CAN diagnostic equipment, which enables to detect, locate and indicate errors and failures and provide characteristics required for the airborne applications. Further the paper analyses transmission CAN
messages behavior of an aircraft electronic system consisting of several modules based on the time-triggered communication mode of the CAN with CANaerospace protocol.
Keywords
CAN, Diagnostic, Avionic
Full paper 2011-12-19 14:35
Experimental Parameters Identification of the Human-Pilot Model Behaviour
Rudolf JALOVECKÝ, Přemysl JANŮ, Jan BOŘIL
Abstract
The paper represents one of the other ways how to optimize alternative mathematical human-pilot model usable in the models of the aircraft flight control in the space. In general, the creation of the equivalent human model is very complicated, because the human characteristics are not constant in the time. The characteristics are changing with immediate human ability. At the simulation of the human behaviour is possible to compile only general, an approximate human model. The contribution shows further possibilities how to explore the human-pilot behaviour during the determining of chosen transfer functions parameters.
Keywords
CAN, CANaerospace, Avionic system, Time-triggered, Cycle Matrix
Full paper 2011-12-19 14:33
Offline Parameter Identification - The Random Initial Estimation Issue
Michal DUB
Abstract
Experimental offline identification algorithm is based on minimization of criteria function considering the unknown mathematical model variables. We often use software support of various computing programs to find the minimum of a scalar function of several variables. However, operator has to know initial estimation of the searched parameters to get proper results. If operator sets bad initial estimation, the identification process would find another local minimum or would diverge. This paper is focused on random approach to initial estimation of simple mathematical model using basic MATLAB software support.
Keywords
Identification, Initial Estimation, Searched Parameters, MATLAB
Full paper 2011-12-19 14:20
Concept Development and Experimentation in STRUCTURE Project
Vitezslav JAROS
Abstract
The creation of the concept is a process stemming from the transformational changes as well as capabilities development. At the onset, the questions and new ideas dealing with capabilities requirements emerged. In the end, the approved concept is implemented into areas influenced by this new approach. The author explains various possibilities for using the CD&E method while working on projects in the armed forces and proposes its application procedure in the defence project STRUCTURE.
Keywords
CD&E (Concept Development and Experimentation), DOTMLPFI (Doctrine, Organization, Training, Material, Leadership, Personnel, Facilities and Interoperability)
Full paper 2011-12-19 08:04
Requirements on Information Management within Support of Decision-making Processes in the NEC
Vladislav MRÁZEK
Abstract
Based on needs analysis, the article defines the requirements on the information management in optimizing the quality of decision-making and planning processes. It anticipates the target state of options and implementation of information sharing. It addresses the current issues of the knowledge system in the operational planning process.
Keywords
Information management, common operational picture, communication and information systems, Network Enabled Capability
Full paper 2011-11-23 15:15