9 Articles Published

1. ENHANCEMENT EMBEDDED SYSTEM FOR CONTROL AND MONITORING DESIGN UNDERWATER ROBOT

Authors: J. SRINONCHAT

Abstract: An underwater robot is individually designed for a specific task such as ocean mapping, geothermal under ocean, tracking pipe line and monitoring environments. This article presents an enhancement embedded system for control and monitoring design underwater robot which it can be the another choice to design the underwater robot . The electronic circuits are design and interface with many sensors for control and measure the water environment such as oxygen sensor. The major controller is PIC16F877A and PIC18F443 and combines with multiple sensors. The antenna video wireless is applied as the vision controller which used frequency 2.4 GHz to transmit and receive video data. The experiment results show that it can transfer the video of underwater environment and monitoring the oxygen and temperature of water as design. Also the embedded system is more convenient. It can further develop and make it to the large scale.

Keywords: underwater robot, embedded system, monitoring environemnt

Pages: 1 - 4 | DOI: 10.15224/978-981-07-8859-9-54

2. AF AND DF RELAYING SCHEMES IN COOPERATIVE ML IDMA COMMUNICATION

Authors: BASMA A. MAHMOUD , ESAM A. A. HAGRAS , MOHAMED A. ABOUL-DHAB

Abstract: In this paper, we consider the bit error rate performance analysis of a cooperative relay communication system on Multi-Layer Interleave Division Multiple Access (ML-IDMA) using Maximal-Ratio-Combining technique; we examine the effect of layers number on the performance and derive the average bit error probability of the Amplify-and-Forward (AF) and Decode-and-Forward (DF) relay schemes by using the closed-form relay link Signal-to-Noise Ratio and compare between these relaying protocols. Based on the analysis, and simulation results, it is shown that although degradation in the performance is observed in both relay schemes when increasing number of layers but on the other hand we saved in the band width. Slightly performance enhancing is obtained when using DF compared to AF relaying protocol.

Keywords: cooperative transmission, multi layers, MRC, AF, DF

Pages: 5 - 10 | DOI: 10.15224/978-981-07-8859-9-55

3. THE NEW APPROACH OF DESIGN ROBUST STABILITY FOR LINEAR CONTROL SYSTEM

Authors: BEISENBI MAMYRBEK , USKENBAYEVA GULZHAN

Abstract: We propose an approach to design of robust stability of dynamic control systems with one input and one output signals. Design of robust stability of control system is based upon construction A.M. Lyapunov’s function. The system states the method of construction of A.M. Lyapunov’s function on the basis of geometric interpretation of Lyapunov theorems concerning asymptotic stability and concepts of dynamic systems stability. It is supposed that undisturbed motion of system corresponds to origin of coordinates, and equations of state are comprised as regard to perturbances, i.e. in deviations of perturbational motion. Hence, equations of state evaluate the rate of change of perturbance (disturbance) vector and in stable system is directed to origin of coordinates. Gradient vector from Lyapunov required function is directed to the side opposite. Construction of Lyapunov vector function and development of robust stability of dynamic control system with undetermined parameters is based on co

Keywords: Control systems, robust stability, superstability, Lyapunov’s direct method, modelling, simulation.

Pages: 11 - 18 | DOI: 10.15224/978-981-07-8859-9-56

4. THE NEW METHOD OF RESEARCH OF THE SYSTEMS WITH INCREASED POTENTIAL WITH ROBUST STABILITY

Authors: ABDRAKHMANOVA LEILA , BEISENBI MAMYRBEK

Abstract: In this paper we propose the problem of design control systems with increased potential of robust stability in a class of two- parametric structurally stable mappings for objects with m input and n output signals.For research of the stability of steady states we using the ideas of the second method A.M. Lyapunov and define components of the gradient vector of the Lyapunov function. During the studying we will represent Equations of state in deviations relative to the stationary states. The general problem of Lyapunov functions for investigation of the systems with improved capacity of robust stability is defined and a condition of stability is given. We propose a method for construct the control system, built in the two-parameter class of structurally stable, which will be sustained indefinitely in a wide range of uncertain parameters of the control object. This work presents novelty theoretical fundamental results assisting in analyzing of the behavior of control systems, meaning of r

Keywords: control system, robust stability, structurally stable mappings, stability of steady States, geometric interpretation, stationary condition.

Pages: 19 - 26 | DOI: 10.15224/978-981-07-8859-9-57

5. SOME ASPECTS OF SOFT COMPUTING APPROACH IN INFORMATION TECHNOLOGY

Authors: V.S.S KUMAR , N. KURUMURTHY

Abstract: Soft computing (SC) techniques are rapidly emerging as an important contributor to effective management. One of the greatest growth areas lies in the use of fuzzy logic for supporting managerial decision making processes. Fuzzy set theory, a major branch of SC has only recently begun to be applied to industry problems. Although SC has scarcely touched by today's managers, it will begin to have dramatic and widespread impacts on their activities over the next few years. The application of SC plays a major role in reshaping traditional notions to take decisions. It will lead to tremendous increase in the productivity of organizations. Those organizations in the forefront of applying SC methods to aid in management will have distinct competitive advantage over those that lag. The present paper discusses some aspects of soft computing approach and its limitations in industry.

Keywords: Fuzzy-Logic, Neural networks, Expert systems, Decision making, Artificial intelligence.

Pages: 27 - 30 | DOI: 10.15224/978-981-07-8859-9-58

6. IMPLEMENTATION OF STEER BY WIRE USING FPGA

Authors: ABD KADIR MAHAMAD , KING DIAW , MOHD FIRDAUS MAHAYUDIN , SHARIFAH SAON

Abstract: This project is described the modeling of steer by wire (SbW) technique that implement using DE1 board to control the positioning. The variable resistor and servomotor are uses as input and output respectively. The actual position of variable resistor is translated into analog voltage signal using voltage divider theorem. The analog signal later on is converted into 10-bit digital form using A/D converter embedded in the PIC16F873A. An output from A/D converter is connected to the DE1 GPIO port as an input to the controller. The VHDL code is used to program the FPGA on DE1 board. The controller algorithm is successfully translated into the VHDL code and the DE1 boards completely act as a controller for this project. As a result, the motor pointer can follow exactly the desired pointed by the variable resistor.

Keywords: Steer by Wire (SbW), DE1 board, FPGA, VHDL, PIC16F873A.

Pages: 31 - 34 | DOI: 10.15224/978-981-07-8859-9-59

7. DEVELOPMENT OF MULTI-MOVEMENT MOBILE ROBOT

Authors: ABD KADIR MAHAMAD , SHARIFAH SAON , JAYNE JUKING

Abstract: This project involves the design and development of an autonomous mobile robot that can move in various motions using Mecanum wheels. The Mecanum wheels developed consist of fifteen rollers made from abacus beads. All Mecanum wheels are independently powered using four units of DC motors and gearbox system. The aim of this project is to build a robot, which is autonomous, and move according to what have been programmed. The functions are forward, reverse, right slide, left slide, diagonal, rotation and obstacles avoidance. All these functions are set up by using MPLAB IDE software. This robot is controlled by microcontroller PIC16F877A which use as the brain to control the robot movement. This robot has obstacles avoidance capability which the robot will avoid obstacles like walls and boxes. It is equipped with three IRsensors on the left, right and in front of the robot to detect any obstacles.

Keywords: Autonomous Mobile Robot, Mecanum wheels, PIC16F877A.

Pages: 35 - 39 | DOI: 10.15224/978-981-07-8859-9-60

8. UPRATING AND REFURBISHMENT OF HYDRO GENERATORS(ROTOR UPRATING)

Authors: VINOD THAKUR

Abstract: Age has an effect on the working and efficiency of generators in a Hydro Power plant. While we discuss about refurbishment of a Hydro Power Plant, we can plan to refurbish, uprate and modernization of generators. Stator and rotor are the main component which can be refurbished and upgraded in order to increase efficiency. In the case of “Bassi” Hydro Power Plant, we planned to refurbish the all four generators. In this paper we are focusing on rewinding of rotor and results thereof. While planning of refurbishment of a Hydro Power Plant, it can be discussed that generators can be refurbished completely or partly depending upon the condition of the generators. Among these two options time constraint and loss in power production are also taken into consideration. In the case of “Bassi Power Plant” there are four generators. Power plant cannot be stopped for refurbishment so it is decided to refurbish these generators one by one. Again a major issue to decide is whether go for complete re

Keywords: “Bassi Power , Plant”, generator

Pages: 40 - 41 | DOI: 10.15224/978-981-07-8859-9-74

9. THE SIGNIFICANT OF CHARACTER’S LOCATION IN THE AUTHENTICATION PROCESS

Authors: KRANOGWAN KRASAESAT , PATTARASINEE BHATTARAKOSOL

Abstract: Presently, the security of information significantly becomes an important issue for all users over the Internet. Since a single password is insufficient to protect attack from attackers as proved by various researchers, various biometrics have been applied as new alternatives for classifying and identifying users. Keystroke dynamics is a behavioral biometrics with individual characteristic pattern of each person. This unique pattern might be the result from typing skill. In addition, a research had proved that the eye vision can be counted as a biometric which can identify an individual person with higher accuracy when combining with keystroke dynamics. Nevertheless, the character’s position on the keyboard has been analyzed in this research that it is a factor of time differences based keystroke dynamics and eye vision mechanisms. Therefore, this research has objective to propose that the vision speed and the location of the typing character should be integrated in the authentication

Keywords: Authentication, biometric, behavioral biometrics, character’s location, eye vision, keystroke dynamic, multibiometric.

Pages: 10 - 14 | DOI: 10.15224/978-981-07-8859-9-03