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Formal Reliability Analyses of Power Line Communication Networkbased Control in Smart Grid
Riaz Uddin,Syed Atif Naseem,Zafar Iqbal 제어·로봇·시스템학회 2019 International Journal of Control, Automation, and Vol.17 No.12
Communication network is one of the primary elements of the Smart Grid for sending and receiving the bi-directional flows of important information such as load flow, faults, etc., in a reliable and efficient way. In this regard, G3-Power Line Communication (PLC) network is the most ideal preference over wireless or wired communication technology due to low cost, high throughput and better reliability for the distribution network of Smart Grid. This fact motivated us to study and analyze in detail the accuracy and reliability of the flow of information of the PLC network in terms of probabilities especially for Fault Detection, Isolation and Supply Restoration (FDIR) behavior in the distribution system of Smart Grid through formal analyses. In order to perform the analyses, first we develop the Markovian model of the FDIR behavior with (G3-PLC) in the distribution network of Smart Grid of the practical intelligent distribution network system case study, and then formally verify the model via probabilistic model checker (PRISM) tool in order to analyze the system accuracy, efficiency, and reliability by developing the logical properties and finding the success/failure probabilities for the FDIR mechanism at the occurrence of faults. Finally, some important discussions are made comparing FDIR connected with Ethernet communication network against FDIR connected with the PLC network.
Projected Predictive Energy-Bounding Approach for Multiple Degree-of-Freedom Haptic Teleoperation
Riaz Uddin,박상수,박성준,류제하 제어·로봇·시스템학회 2016 International Journal of Control, Automation, and Vol.14 No.6
This paper presents a geometrically and dynamically transparent projected predictive Energy-BoundingApproach (EBA) for multiple degree-of-freedom (m-DOF) haptic teleoperation with time delays. The straightforwardextension of a single-DOF teleoperation to m-DOF teleoperation suffers from a bad force distortion problemthat becomes worse with the increase in communication time delays between master and slave sites. Due to this,geometry perception of remote m-DOF objects at master site is severely deteriorated. To solve this problem, aprojected predictive m-DOF EBA is proposed by combining the m-DOF Predictive EBA and the projection methodthat can compensate the force distortion problem. The proposed approach also includes steps to get stably theinformation about the contact locations (geometry) of m-DOF remote objects without geometry detection sensors. In order to validate the proposed approach, some experiments performing surface contour-following are conductedusing two Phantoms: (i) 2-DOF object (bobbin), and (ii) 3-DOF semi-spherical object in the presence of large timedelays.
Parametric Sensitivity Analyses for Perceived Impedance in Haptic Teleoperation
Riaz Uddin,Muhammad Hammad Saleem,류제하 제어·로봇·시스템학회 2019 International Journal of Control, Automation, and Vol.17 No.8
In this paper, sensitivity analyses (SA) are performed in order to find the effect of variations of master/slave site dynamics parameters on the perceived impedance in haptic teleoperation in the absence/presence of communication time delays. These analyses are useful in finding the dominant parameter perceived by the human operator during the teleoperation. In this regard, the comprehensive sensitivity analyses are performed for the prominent force reflecting teleoperation architectures such as (i) two-channel (2C) teleoperation architectures mainly (a) position error-based architecture (PE) and (b) direct force reflection architecture (PF), (ii) four-channel architecture (4C) and, (iii) three-channel (3C) architecture (a) OFC architecture and (b) EFC architecture. Several important results and conclusions are presented for sensitivity of perceived impedance in frequency domain using MATLAB/Simulink.
Riaz Uddin,Ali S. Alghamdi,Muhammad Hammad Uddin,Ahmed Bilal Awan,Syed Atif Naseem 대한전기학회 2019 Journal of Electrical Engineering & Technology Vol.14 No.6
The fault diagnosis and control through fault detection, isolation and supply restoration (FDIR) technique is the part of a commonly used distribution management system application in smart grid. When the fault occurs, it becomes essential to detect and isolate the faulty section of the distribution network at once and then restore back to its running condition through tie switches. The communication between IEDs is done through diferent communication mediums such as Ethernet, wireless, power line communication etc. Therefore, formal analysis of the FDIR mechanism is required with communication network (ideally Ethernet), which helps us to predict the behavior of FDIR response upon the occurrence of fault in terms of various important probabilities, reliability study and efciency (showing the system will work properly). In this regard, for the above said analyses, this article discusses (a) the development of the Markovian model of FDIR for distribution network of smart grid considering Tianjin Electric Power Network as case study with intelligent electronic devices (IEDs) using ideal communication medium (Ethernet); (b) utilized probabilistic model checker (PRISM tool) to predict the probabilities; (c) perform the reliability analyses and (d) study the efciency of FDIR behavior for future grid using logical properties. The detailed analysis and prediction (done for the fault occurrence scenario) mainly focus in determining the (1) the probability of switching failures of FDIR in smart grid; (2) the probability of isolating the defective switch from the system within limited time and (3) the probability of restoring the system automatically within the minimum possible interval.
Riaz Uddin,Muhammad Affan,Asad Arfeen,Jeha Ryu,Saad Ahmed Qazi 제어·로봇·시스템학회 2022 International Journal of Control, Automation, and Vol.20 No.1
The paper presents the comprehensive transparency analyses in terms of low frequency approximation of perceived impedance for the notable passivity-based approaches such as wave variable (WV), time domain passivity observer and control (TDPC), energy-bounding approach (EBA) and predictive energy-bounding approach (Predictive-EBA). Firstly, low frequency models of perceived impedance for the aforesaid approaches are developed and then, analyzed and discussed in detail. Secondly, these approaches are compared with each other to study the transparency in free motion and contact mode for prominent two-channel (2C) force feedback architectures namely, position error-based force reflection (PE) and direct force sensing (PF). Lastly, the detailed analyses and comparisons among WV, TDPC, EBA and Predictive-EBA are done both qualitatively and quantitatively, followed by the important discussions and conclusions.
E-government Readiness to Face the Future Challenges: The Case of Bangladesh
( Md Riaz Uddin ) 한국정책학회 2015 한국정책학회 동계학술발표논문집 Vol.2015 No.-
E-Government is an important paradigm of good governance. The present government of Bangladesh is trying to give better service to the people through e-Government implementation. In fact, the Bangladesh government received a slogan of "Digital Bangladesh" in the government``s Election Manifesto of2008. This paper aims to evaluate the readiness of e-Government status of Bangladesh. In this study reviewed and analyzed three frontline global surveys to assess the country``s e-Government status in comparison to other south Asian countries and also employed the SWOT (Strengths, Weaknesses, Opportunities and Threats) analysis and PEST (Political, Economic, Social and Technological) determinants to evaluate the current state of e-Government in Bangladesh and its preparedness. Conceding the necessity of employing the new electronic means, information, and communication technologies, the movement toward implementation of e-government in Bangladesh has recently received the attention of country``s chief executive and policy makers. Many strengths and opportunities stimulate the development of e-Government in Bangladesh such as economic policies, strong political willingness, suitable educational system to generate tech savvy future generation and low labor cost. However, Bangladesh also faces new threats and challenges such as the significant increase in the number of cyber crimes, security and privacy concern. Finally, conclusion and study implication drawn up for future direction.
Muhammad Affan,Riaz Uddin 제어·로봇·시스템학회 2021 International Journal of Control, Automation, and Vol.19 No.9
With the development of high-speed microprocessors, it is now possible to implement mathematically complex vector control algorithms without compromising on the performance of motor drive. Among vector control techniques space vector proportional-integral (PI), direct-torque control (DTC), field-oriented control (FOC), model-predictive control (MPC) are being widely used in industries. But their limitations have urged researchersto develop more advance techniques. In this paper, a new technique learning and adaptive model - based predictive control (termed as LAMPC) is proposed for the vector control of three phase induction motor. In the proposed method, the dynamic model of induction motor is updated adaptively based on prediction (receding horizon principle) for the inner control loop (current control) while the brain emotional learning-based intelligent controller (BELIC) is used for the outer control loop (speed control). The proposed methodology offers desired dynamic response, precise tracking, good disturbance handling capability along with satisfactory steady-state performance. To show the effectiveness of the proposed approach, benchmark simulation results for various inputs are presented using MATLAB/Simulink. Finally, the detailed qualitative and quantitative comparison of the proposed LAMPC is made with the most relevant vector techniques to show its significance.
Sensitivity Analysis of Detection and Discrimination Transparency for Haptic Teleoperation
Sangsoo Park,Riaz Uddin,Jeha Ryu 제어로봇시스템학회 2015 제어로봇시스템학회 국제학술대회 논문집 Vol.2015 No.10
This paper presents a sensitivity analysis for detection and discrimination transparency of perceived impedance for haptic teleoperation system considering a surgical tool flexibility. Based on the analysis, dominant parameters that affect transparency are figured out.