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Novi Beograd, Serbia

Kablar N.A.,Lola Institute
2010 15th International Conference on Methods and Models in Automation and Robotics, MMAR 2010

In this paper we develop dissipativity results for discrete nonlinear and linear singular systems. To the best knowledge of author results are nonexistent. We generalize dissipativity theory to discrete nonlinear singular dynamical systems. Specifically, the classical concepts of system storage functions and supply rates are extended to singular dynamical systems providing a generalized system energy interpretation in terms of stored energy and dissipated energy over the discrete-time system dynamics. For the class of discrete singular systems we present Kalman-Yakubovich-Popov conditions in terms of the discrete singular system dynamics characterizing dissipativeness via system storage function. The framework is specialized to passive and nonexpansive discrete singular systems to provide a generalization of the classical notions of passivity and nonexpansivity for nonlinear discrete singular systems. ©2010 IEEE. Source

Robot control systems are usually complex systems whose users must be well trained to use them. Also, control process is mainly carried out near the robot or by using wired connections. There is a need for a solution that can provide convenient and intuitive robot control with user’s location independence, easy adjustment and simultaneously monitoring of robot motion tasks. Android devices are powerful mobile devices with open architecture and permanently Internet connection that can be applied to resolving those issues. This paper presents a system for remote monitoring and control of industrial robots based on Android device and Wi-Fi communication which provides intuitive robot control at a great distance with simultaneously monitoring of robot motions by observing its 3D model movement or trajectory path. Simple definition of new motion tasks and their redefinition is provided through the so called “speed dial” mode and manual robot guiding is provided through the manual control mode. Proposed solution simplifies an interaction between the human and the industrial robot in the case of robot motion control and tracking at remote location. © 2015, KoREMA. All rights reserved. Source

The paper presents analyzed statistical properties of music signals from various instruments playing at different speeds. The signals are contained in about an hour of music recorded in the form of ten sequences. The analyzed signals are obtained from five different speeds of playing music for each sequence. For each playing speed time variation of the signal level was found, performed with a 10 ms period of integration in rms calculation and with 70% overlap, statistical and cumulative distributions of signal level, skewness and kurtosis, the parameters L 1, L 5, L 50, L 95 and L 99, which are derived from cumulative distributions as numerical indicators of dynamic properties. The paper contains detailed statistical data for all five-speed playing. © 2011 IEEE. Source

Banduka M.L.,University of Belgrade | Banduka M.L.,Lola Institute
International Journal of Engineering Education

Resources in the robotics field are limited for a common user to access and demand deep knowledge of robot programming paradigm, so it is not often possible for students to become familiar in a practical manner with the programming and control of complex robotic systems. The aim of this new approach is to get high school students interested in the programming and control of robotic manipulators and to teach senior year students how to program control algorithms and to control complex robotic systems by using remote access to the robotic laboratory and a programming method that does not require deep knowledge of robot programming language. Additionally, the objective is to accomplish this aim by using widespread and inexpensive devices such as smartphones and tablets. To achieve these objectives, we have developed Robotics First-an Android OS (operating system)-based environment for simulation and remote control of robotic manipulators using mobile devices. The efficacy of Robotics First was evaluated from the point of view of 64 electrical engineering students, concerning its usability and usefulness. © 2016 TEMPUS Publications. Source

Pavlovic V.D.,University of Nis | Lutovac M.M.,Lola Institute | Lutovac M.D.,State University of Novi Pazar
International Journal of Reasoning-based Intelligent Systems

The paper presents the automated design of active RC and programmable filters. The approximating function is derived using Legendre orthogonal polynomial with the appropriate weights and usage of two Legendre multiplication factors at the origin and the pass-band edge frequency. Detailed analysis is done for the frequency response and sensitivity analysis of active RC filters. Optimisation is performed using symbolic manipulation of expressions inputted into computer algebra system and numeric solvers. The code is in the form of template notebook, and the user should specify the minimal number of numeric values, such as the number of secondorder filter sections, the pass-band edge frequency, the reflection coefficient, and the preferred values of component values. Copyright © 2012 Inderscience Enterprises Ltd. Source

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