ORCID Profile
0000-0003-0642-5133
Current Organisation
Murdoch University
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Publisher: IEEE
Date: 08-2018
Publisher: IEEE
Date: 12-2012
Publisher: IEEE
Date: 05-2014
Publisher: IEEE
Date: 12-2016
Publisher: IEEE
Date: 12-2019
Publisher: IEEE
Date: 09-2011
Publisher: Trans Tech Publications, Ltd.
Date: 02-2011
DOI: 10.4028/WWW.SCIENTIFIC.NET/AMR.201-203.1972
Abstract: This project is intended to design an articulated robotic arm which could locate a point in space with its given coordinates at three degrees of freedom. The basic three rotary movements are base rotation, first and second arm swivel. With different payload capability and design, the robot can be employed in various industrial applications including spot welding, assembling, cutting, material handling and many more. The mechanical structure is designed and a physical setup is developed for which a microcontroller based control circuit is designed for the purpose of control. This paper is focused mainly on the mechanical design of the structure. An elaborate analytic description of the components and tools is presented with necessary specifications. This structure is very flexible and has the ability to reach over obstructions. It can achieve different positions and orientations with in the working envelop.
Publisher: IEEE
Date: 12-2019
Publisher: IEEE
Date: 02-10-2020
Publisher: IEEE
Date: 05-2012
Publisher: Trans Tech Publications, Ltd.
Date: 02-2011
DOI: 10.4028/WWW.SCIENTIFIC.NET/AMR.201-203.1960
Abstract: Due to the quick evolution of manufacturing processes, the demand for more flexible automation systems is on the rise. To answer these requirements, distributed motion control architecture based on intelligent drives tends more and more to replace the traditional solutions. This paper presents the control of an articulated arm robot with three degrees of freedom. The essential part of the robotic arm is a programmable microcontroller based system capable of driving basically three stepper motors design to form an anthropomorphic structure. This paper explains the method of interfacing the robotic arm stepper motors with the programmed Atmega16 microcontroller which is used to control the robot operations. C programming language is employed here in programming the microcontroller.
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 2020
Publisher: IEEE
Date: 05-2012
Publisher: MDPI AG
Date: 25-08-2023
DOI: 10.3390/EN16176188
Abstract: Renewable energy sources (RESs) and energy storage schemes (ESSs) integrated into a microgrid (MG) system have been widely used in power generation and distribution to provide a constant supply of electricity. The power electronics converters, particularly the bidirectional power converters (BPCs), are promising interfaces for MG infrastructure because they control the power management of the whole MG system. The controller of BPCs can be designed using several different control strategies. However, all the existing controllers have system stability, dynamics, and power quality issues. Therefore, this study demonstrates the development of an LCL-filtered grid-connected bidirectional AC–DC converter’s (BADC) control strategy based on voltage-oriented control (VOC) to overcome these issues. The proposed VOC-based inner current control loop (ICCL) is implemented in synchronous dq-coordinate with the help of proportional-integral (PI) controllers. An observer-based active d ing (AD) is also developed in order to estimate the filter capacitor current from the capacitor voltage instead of directly measuring it. This developed AD system helps to d the resonance effect of the LCL filter, improves system stability, and also eliminates the practical challenges of measuring capacitor current. The proposed controller with AD is able to realize bidirectional power transfer (BPT) with reduced power losses due to the elimination of passive d ing and improved power quality, system dynamics, and stability. The mathematical modeling of the suggested system was developed, and the structure of the system model was established in the MATLAB/Simulink environment. The performance of the proposed system was validated with real-time software-in-the-loop (RT-SIL) simulation using the OPAL-RT simulator for a 16 kVA converter system. The real-time (RT) simulation results show that the BADC with the proposed control scheme can provide better dynamic performance and operate with tolerable total harmonic distortion (THD) of 2.62% and 2.71% for inverter and rectifier modes of operation, respectively.
Publisher: Institution of Engineering and Technology (IET)
Date: 12-2020
Publisher: MDPI AG
Date: 10-11-2021
DOI: 10.3390/EN14227514
Abstract: The two common mechanisms of load-shedding and renewable curtailment can prevent provisional overloading and excessive generation and the subsequent unacceptable voltage and frequency deviation in standalone microgrids (MGs), which makes MGs less resilient and reliable. However, instead of enabling load-shedding or renewable curtailment, such overloading or over-generation problems can be alleviated more efficiently and cost-effectively by provisionally interconnecting the neighboring MGs to exchange power amongst themselves. In such a scheme, the interconnected MGs can supply their local demand, as well as a portion of the demand of the adjacent MGs. In order to implement this strategy, a three-phase ac link can be used as the power exchange network, while each MG is coupled to the link through a back-to-back power electronics converter, in order to maintain the autonomy of each MG if they are eachoperated under different standards. This paper proposes a suitable decentralized power management strategy without a communication link between the MGs to achieve power-sharing amongst them and alleviate unacceptable voltage and frequency deviation along with the required control technique for the power electronic converters, which can be implemented at the primary level based on the measurement of the local parameters only. To this end, one of the converters should always regulate the dc link voltage while the other converter should operate in droop control mode when the MG is healthy and in constant PQ mode when overloaded or over-generating. Suitable status detection and mode transition algorithms and controllers were also developed and are proposed in this paper. The performance of the proposed power exchange and control mechanisms were evaluated and verified via PSIM®-based numerical simulation studies. The stability and sensitivity of the proposed power exchange topology are also analyzed against several critical design and operational parameters.
Publisher: IEEE
Date: 11-2017
Publisher: Trans Tech Publications, Ltd.
Date: 02-2011
DOI: 10.4028/WWW.SCIENTIFIC.NET/AMR.201-203.1966
Abstract: Line following automated robots is extensively used in industries for smooth running of production. This paper presents a simple and effective solution for path tracking problem for a wheeled automated mobile robot which can be used for material handling in industries. A PID controller has been used for controlling the robot which is capable of moving safely by smooth track-keeping in partially structured environment without any collision with static or moving objects. The purpose of the project is to build a mobile robot which will provide fast, smooth, accurate and safe movement in any given line or track. A straight or wavy line would be simple to follow whereas aT-junction, 90 degree bends, acute angle bends and grid junctions would be difficult to navigate through. This is due to the physical kinematics constraints which are limited to motor response, position and turning radius of the robot. A line sensor configuration has been proposed to improve the navigation reliability of the mobile robot which uses differential drive system. A dynamic algorithm has been developed for detecting and following a specified line which ensures the reliable and safe movement of the robot.
Publisher: IEEE
Date: 09-2011
Publisher: Trans Tech Publications, Ltd.
Date: 02-2011
DOI: 10.4028/WWW.SCIENTIFIC.NET/AMR.201-203.1368
Abstract: Any adjustable speed drives uses an incremental shaft encoder or a sensor and an electronic circuit for rpm as well as velocity estimation. The usual method of counting pulses generated by encoder or sensor in a fixed period of time produces a high precision velocity or rpm estimation in the high speed range. Tachometer plays a vital role in measurement of rpm of any rotating device and it is essential for any control system especially in servomechanism. Most of the controllers employed in the industry to control industrial process use a tachometer which gives the provision of feedback in a control circuit. The purpose of the project was to develop a digital tachometer using low cost linear digital ICs those are readily available in the markets of Bangladesh. This tachometer can be easily used for both industrial and laboratory purposes where it should be able to measure rpm and provide a voltage proportional to the speed of the shaft of the rotating device. At the same time efforts have been taken to reduce the cost of the tachometer as much as possible.
Publisher: Springer Berlin Heidelberg
Date: 2011
Publisher: IEEE
Date: 12-2019
Publisher: IEEE
Date: 12-2019
Publisher: Institution of Engineering and Technology (IET)
Date: 23-03-2021
DOI: 10.1049/STG2.12033
Publisher: IEEE
Date: 12-2016
Publisher: IEEE
Date: 05-2014
No related grants have been discovered for S M Ferdous.