VOLUME 11, ISSUE 8, AUGUST 2023

Abstract: This study proposes an approach for classifying single stage Power Quality Disturbances (PQDs) that is based on the Hilbert Transform. These power quality disturbance signals are produced utilizing the MATLAB environment's simulation models and integral mathematical models of PQDs. Voltage sag, voltage swell, and voltage interruption are the power quality disturbances taken into account in this study. The Power Quality Index (PQI) curve is generated from these signals using the Hilbert transform, and features are then extracted from it. By changing the parameters, multiple instances of power quality disturbances are produced, and a dataset is produced. In order to train and test the Feed Forward Neural Network (FFNN) classifier, the dataset signals are transformed using the Hilbert transform to produce a feature vector. Calculating the efficiency of the proposed algorithm yields the effectiveness of the provided strategy. The single stage power quality disturbances are classified using a thresholding-based method as well.

Keywords: Power Quality Disturbances, Power Quality Index, Hilbert Transform, Feed Forward Neural NetworkI

Abstract: In this paper, a fiber optic sensor system (FOSS) is proposed for the measurement of the rotational speed of a DC motor. It offers non-contact measurements. FOSS is designed using a fiber optic displacement sensor (FODS). FODS is an intensity modulation based extrinsic type sensor.

In FOSS, the distance between the sensor probe and the rotating shaft of a DC motor is optimized based on the response of FODS. The speed of a DC motor varied from 200 to 3000 rotations per minute (RPM) using a chopper motor controller. The output of FOSS was validated with a digital tachometer from Systems.

Keywords: Fiber optic sensor; Intensity modulation; Plastic optical fiber; Revolutions per minute.

Abstract: The Ball and Beam System (BBS) is considered as one of the most common used approaches on benchmark for evaluating control algorithms in control engineering laboratories. This system demonstrates significant instability and nonlinearity, finding practical relevance in scenarios like maintaining balance of a ball on a beam, akin to the horizontal stabilization required during airplane landings. The actual system contains a ball, a beam, and a motor, with the core principle involving motor-generated torque to govern ball position on the beam. This facilitates smooth ball movement along the beam. Several theoretical approaches are used to controller design exist for stabilizing the ball and beam system. This paper proposed a Proportional Derivative (PD) controllers design to regulate ball position on the beam. MATLAB environment is utilised for simulating the mathematical model of this system. The study showcases the efficacy of the control algorithm in effectively managing the inherent nonlinearity and instability of the system. The achieved results from the conducted simulation, approved the ability of the proposed PD controller for stabilising ball position tracking on ball and beam system.

Keywords: PD controller, Ball and Beam System, DC motor, Root locus.

Abstract: The flexible AC transmission systems (FACTS), are high current power electronic devices used to control the voltage, power flow and stability of a transmission system. Distance protection is always used for transmission lines protection. The use of these FACTS devices creates certain problems for distance relays because of the rapid changes introduced by the associated control actions in primary system parameters, such as line impedances. This paper discusses the effect STATCOM device on distance protection relays setting. Transmission line between Merowe station to Markheyat substation, is taken as case study. The study is carried-out using short circuit calculation and simulation before and after adding STATCOM device using NEPLAN software The results show that that the distance relay cannot trip the faults in the real zones operating area after addition of STATCOM device to the case study.

Keywords: STATCOM, Distance relay, Protection, NEPLAN

Abstract: Sign language is a form of communication that utilizes methods to express everyday messages. Unlike sign languages, the interpretation of ISL (International Sign Language) has received attention from researchers. In this paper we present a translation system specifically designed to interpret alphabets, in English sign language. This system focuses on analysing images of hands allowing users to interact with it naturally. By eliminating the need for interpreters, it offers individuals the opportunity to communicate with deaf people seamlessly. Our goal is to develop systems and methods for recognizing and translating sign language.

The initial step of this system involves creating a database for English Sign Language. Hand segmentation plays a role in achieving accurate hand gesture recognition rates within any recognition system. By improving the quality of output, we can enhance recognition rates significantly. Furthermore, our proposed system incorporates a robust hand segmentation and tracking algorithm to achieve results in recognition accuracy. We have utilized a collection of samples to recognize 43 isolated words, from Standard English sign language.

In our proposed system we aim to recognize elements of sign language and facilitate their translation into text well as vice versa in the English language.

Keywords: Sign Language, Machine Learning, Convolutional Neural Network, Gesture Recognition.

Abstract: This paper presents the design and development of an IoT-based accident avoiding system for enhancing road safety. The system employs a network of sensors, cameras, and communication devices to analyze the vehicle's surroundings in real-time. In case of potential collisions, the system triggers alerts for the driver and communicates with nearby vehicles and infrastructure to optimize traffic flow. Extensive simulations and real-world tests demonstrate the system's efficacy in collision avoidance and traffic management, paving the way for smarter and safer transportation systems.

Keywords: IOT, Sensor Network, Data Processing, Road Safety.

Abstract: English is the language largely used by the students of Science, Literature, Commerce and Technology streams. So it is important for the students to learn English in any part of the world. The purpose of this study was to assess problem solving ability among English and other arts faculty undergraduate students. A total of 75 English and 75 other arts faculty undergraduate students were selected from various affiliated colleges of Dr. Babasaheb Ambedkar Marathwada University, Aurangabad. The self design questionnaires use to measure the problem solving ability of the students . The findings of the study revealed that No significant differences were found in problem solving ability between English and other arts faculty undergraduate students.

Keywords: Problem-solving, English, students, undergraduate

Abstract: The quality of water entering into water distribution network often provides requirements for corrosion and scaling in areas lacking adequate treatment methods, which can cause serious problems. The most commonly used corrosion indices are Langelier saturation index (LSI), Ryznar stability index (RSI). This study aimed to evaluate the corrosion and scaling potential of water resources in Udaipur, Rajasthan. Therefore, the corrosion and scaling potential of groundwater resources were investigated according to LSI, RSI. Scaling and corrosion are from common indicators of water quality and can cause economic and health damages. According to the results, total hardness and TDS had high mean values, but the values of pH, temperature, and alkalinity were rather admissible. As well, most of the water resources of studied area had low to moderate corrosivity according to LSI and RSI. On the basis of LSI, around 50% result showing that water was slightly scale forming and corrosive and remaining 50% showing that water was scale forming but non-corrosive as mentioned in table 3. Ryznar Stability Index (RSI) showing that 4.5% samples were heavy corrosion, 9.0% samples were light scale, 50% samples were light scale or corrosion, and 36% samples were corrosion significant

Keywords: Scaling, Corrosion, LSI, RSI, Groundwater

Abstract: This study paper examines 3D printing, the many materials used for it, and their qualities, a hot topic in contemporary technology. Applications of 3D printing in manufacturing play a significant role in our daily lives. Different advanced manufacturing technologies have evolved throughout time.

Recently, additive manufacturing, commonly referred to as three-dimensional (3D) printing, has been applied in a wide range of industries. Comparatively speaking, 3D printing takes less time than conventional manufacturing methods. Using raw materials, components are built up layer by layer in this process. These days, many items are manufactured and constructed using this approach.

Keywords: 3D printing, Stereo-lithography (SLA); Fused Deposition Modelling (FDM); Selective Laser Sintering; Laminated Object Manufacturing;