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1975 articles for “Operative” (ranking capped at the first 2,000 matches — narrow the search to see the rest)
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Industrial Prognostics via Ensemble Machine Learning: An Uncertainty Aware Framework for RUL Estimation on NASA FD004 Telemetry
Abstract: Estimating the Remaining Useful Life (RUL) of industrial machinery in real-time is now vital for both operational safety and smart resource management. In the aviation industry, turbofan engines deal with constantly shifting flight conditions, making traditional, scheduled maintenance both expensive and prone to error. This paper addresses the flaws in common “point-prediction” AI models, which offer a single failure date without any margin for error, by introducing a new, uncertainty-aware …
Published in Journal of Aerospace Engineering & Technology · Vol. 16, Issue 2, 2026 Read article
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Transfer Learning Based High-Precision Multi-Class Object Detection for Real-Time UAV Autonomous Landing via YOLOv8l in Unstructured Scenarios
Abstract: A significant challenge for autonomous drone landings in unstructured environments is that of reliably detecting and identifying objects in real-time to ensure safety and accuracy of the landing area. This paper presents a well-founded method for solving this problem using the YOLOv8l object detection framework to detect landing zones, obstacles and people in the relevant vicinity of the landing area. The dataset used for the training of the model contained …
Published in Journal of Aerospace Engineering & Technology · Vol. 16, Issue 2, 2026 Read article
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Analysis of Thermoelectric Generator for Automotive Exhaust Energy Recovery
Abstract: Utilizing waste heat from thermodynamic systems has shown to be a successful tactic for reducing environmental emissions and improving overall energy efficiency. About 40% of the chemical energy generated during fuel combustion is rejected by exhaust gases in internal combustion engines. It is possible to increase vehicle fuel efficiency and lower greenhouse gas emissions by harvesting this otherwise lost heat energy and turning it into useable electrical power. A viable …
Published in Trends in Mechanical Engineering & Technology · Vol. 16, Issue 2, 2026 · pp. 21–33 Read article
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Thermal Performance Analysis and Optimization of Pin-Fin Heat Sink Using CFD, Taguchi Method, and Machine Learning
Abstract: Efficient thermal management is essential for improving the performance and reliability of modern engineering systems and electronic devices. This study presents the design, simulation, and optimization of a pin-fin heat sink using SolidWorks for three-dimensional modeling and ANSYS for thermal and computational fluid dynamics (CFD) analysis. Four different pin-fin geometries, namely square, pentagon, octagon, and circular fins, are considered to evaluate their thermal performance under varying operating conditions. Aluminum is …
Published in Trends in Mechanical Engineering & Technology · Vol. 16, Issue 2, 2026 · pp. 8–20 Read article
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THERMAL DISSIPATION SYSTEM APPLIED TO LED DEVICES
Abstract: A thermal dissipation system, based on an aluminum case LED lamp system encapsulated in a PCM device, has been used to reduce LED device temperature, improving thermal performance of the LED unit. Three heating rates have been tested, low (0.6ºC/s), medium (1.3ºC/s) and high (1.8ºC/s). The system has been tested in an experimental prototype at reduced scale, showing a maximum reduction of temperature from 177.5º C to 56º C for …
Published in Journal of Thermal Engineering and Applications · Vol. 8, Issue 3, 2021 · pp. 1–18 Read article
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SIMULATION OF THE PERFORMANCE OF PV/T (PV-PCM) SYSTEMS IN TRANSIENT STATE
Abstract: The paper describes the analysis of the thermal performance of a PCM unit attached to a PV panel configuring a PV/T system. Thermal performance has been analyzed from the transient process point of view considering the temperature evolution of the PCM with time dependent on ambient temperature and solar radiation. A specific algorithm for determining the time evolution of the PCM temperature has been developed. The model uses the DERIVE …
Published in Journal of Thermal Engineering and Applications · Vol. 10, Issue 1, 2023 · pp. 1–13 Read article
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ADVANCED METHOD TO CALCULATE REAL DRIVING RANGE FOR ELECTRIC VEHICLES IN INTERCITY ROUTES
Abstract: This paper describes an online method to calculate real driving range for electric vehicles when operating in intercity routes. The method uses specific algorithms for dynamic conditions based on real driving conditions adapting the calculation method to the characteristics of the route and to the way of driving; electric vehicle characteristics are also taken into consideration for the driving range calculation. The method has been compared to the WLTP protocol …
Published in Journal of Automobile Engineering and Applications · Vol. 9, Issue 3, 2022 · pp. 24–42 Read article
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Hybrid PV-PCM System to Increase Efficiency
Abstract: AbstractThis paper studies a hybrid design for the photovoltaic industry made up of a conventional photovoltaic panel and a Phase Change Material (PCM) to increase the efficiency of the panel as well as to generate thermal energy. The system has been based on thermal transfer from the PV panel to the PCM through direct contact, thus reducing the operating temperature of the panel and improving its efficiency. The system operates …
Published in Journal of Alternate Energy Sources & Technologies · Vol. 11, Issue 2, 2020 · pp. 15–26 Read article
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A Review on Power Generation Enhancements in a Pumped Storage Powerhouse by Using Appropriate Guide Vane Sealing Material
Abstract: One of the essential needs of the growth of a country is generating and utilizing electricity. India has made a powerful contribution to electricity generation. India is a naturally wealthy country with mountains and water resources. There are strategies to shape new hydroelectric power plants in the upcoming years. It is particularly important to establish Pumped Storage Hydroelectric Power Plants. This research describes that the water leakage occurring in guide …
Published in Journal of Alternate Energy Sources & Technologies · Vol. 13, Issue 2, 2022 · pp. 51–66 Read article
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Drum-Boiler Dynamics and its Water Level Control
Abstract: Boilers used for continuous steam generation on large scale. Controlling aspect in boiler process is highly difficult as the system is complex and exhibit nonlinearity, the dynamics of boiler varies with load and multivariable dependent. The main cause of instability in boiler operation is due to the integration effect in it. In addition to that, boilers are normally used where there is sudden load variation without prior knowledge. In this …
Published in Journal of Control & Instrumentation · Vol. 9, Issue 1, 2018 · pp. 10–16 Read article
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Self-tuning Adaptive Control of Rotor Voltage of Doubly Fed Induction Generator in Wind Farms
Abstract: The dynamic performance of a doubly fed induction generator (DFIG) in the wind farms can be enhanced through appropriate converter controls. This article presents a self-tuning control strategy for a DFIG rotor voltage which employs pole-shift technique in the discrete system model. From a large number of simulation studies involving various types of disturbances covering a range of operating conditions, it was observed that the online adaptive model based control …
Published in Journal of Control & Instrumentation · Vol. 8, Issue 1, 2017 · pp. 17–29 Read article
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Cold Light Source for Endoscopy using AVR Microcontroller
Abstract: An endoscopy involves the procedure of examining internal organs of the human body using endoscope. Presently, during endoscopy halogentype or xenon type light sources are used. The main drawback of these sources is the heat dissipated by them effects the sensor data. Due to high temperature in the surrounding environment, the video tube or optical fiber used to transfer data may be damaged. Moreover if the lamp turns off during …
Published in Journal of Control & Instrumentation · Vol. 5, Issue 1, 2014 · pp. 5–10 Read article
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Instrumentation for Drum-Boiler Water Level Control with MPC and Robust Controller
Abstract: AbstractDrum boilers are used for continuous steam generation in industrial instrumentation on large scale. Controlling and instrumentation aspect in boiler process is highly stringent as the system is highly complex and exhibits nonlinearity, the transient behavior of boiler operation varies with load requirement as it is multivariable dependent. The main cause of instability in drum boiler operation is due to the uneven monitoring of liquid level due to swiss and …
Published in Journal of Instrumentation Technology & Innovations · Vol. 8, Issue 1, 2018 · pp. 1–7 Read article
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Smart Infer Hopper: An Infrared Bluetooth Controlled App Based Remote Control for Projector
Abstract: AbstractThe research paper ventures through the control of projector wirelessly with smart phone. Present remotes work on IR based communication. The device to be controlled is considered as a receiver and the remote behaves as a transmitter. In case the remote is lost, the controlling becomes impossible, thus making it difficult for the user to operate the device. In this paper, authors have tried to remove this hardware dependency by …
Published in Journal of Instrumentation Technology & Innovations · Vol. 8, Issue 1, 2018 · pp. 13–20 Read article
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Uninterrupted Power Supply
Abstract: The uninterruptible power supplies (UPS) are costly equipment. Their installations are profitable, if costly because outage of the power system is higher, as the installation or operation costs. The UPS application areas are: Traffic system, Hospital , Computer lab, Chemical industry. The UPS are used for to maintain continuity of supply. The power improvement analyzed by using uninterruptible power supply. The main components used in uninterruptible power supply are AC …
Published in Journal of Mechatronics and Automation · Vol. 7, Issue 3, 2020 · pp. 33–37 Read article
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Development of Automated System for Facilitating the Movement of Differently Abled Persons
Abstract: There are numbers of people who suffer from partial paralysis (paresis) or other neurological strokes.The proposed work mainly focuses on physical therapy to improve the level of mobility of strokevictims. For helping neurologically damaged patients during therapy, an upper limb robotic orthoticis developed. The system consists of four servo motors which are used for pattern generation for thefour fingers with a crank-shaft mechanism attached, which converts their rotational motion intolinear …
Published in Journal of Mechatronics and Automation · Vol. 8, Issue 1, 2021 · pp. 20–27 Read article
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Reliability Evaluation of Power Distribution Network Considering Uncertainty in Failure
Abstract: With the development of economy and society power planning is facing with the influence of much uncertainty, which are mainly power distribution network. Power system especially at the distribution level is prone to failures and disturbances as many devices are responsible for the successful operation of a radial distribution system. Every time an engineer takes a measurement, the only certainty is that the measurement is not exact; all measurements have …
Published in Journal of Mechatronics and Automation · Vol. 1, Issue 1, 2014 · pp. 33–40 Read article
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Control of Three Phase Agriculture Motor Using Mobile Technology
Abstract: AbstractThe main source of livelihood for majority population in India is Agriculture. This activity feeds the world and helps in the economic growth of the nation. India is a semiarid region where the climatic conditions are not uniform. Majority of farmers depend on bore-wells for irrigation of their fields. The groundwater table is depleting drastically because of excess usage. The power supplied to the agriculture sector is not scheduled properly …
Published in Journal of Microcontroller Engineering and Applications · Vol. 6, Issue 2, 2019 · pp. 34–37 Read article
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Effect of 2D-EBG Structure on Monopole Antenna Radiation and Analysis of Its Characteristics
Abstract: In this paper, we present a two dimensional electromagnetic (2D-EBG) square shaped mushroom structure placed between two monopole antennas. Two artificial properties of this 2D-EBG structure such as PMC and Band Reject Region are investigated here. The radiation characteristics of a monopole antenna over this, 2D-EBG structure is tested by considering two cases. In the first case monopole antenna is made to operate within band rejection region where as in …
Published in Journal of Microwave Engineering and Technologies · Vol. 2, Issue 2, 2015 · pp. 1–4 Read article
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Design of Digital Frequency Sensitive Phase Detector and study its Phase Response
Abstract: In this paper, a digital frequency sensitive phase detector (PD) with voltage controlled phase response is presented. This scheme is based on classical type flip-flop phase detectors and an improved PD operating on both edges of the input sequence. Phase-to-voltage response characteristic control is accomplished by the additional feedback of the low-pass filter output voltage to reset the control pin input. In this paper, we have presented a simulated frequency …
Published in Journal of Microwave Engineering and Technologies · Vol. 8, Issue 3, 2021 · pp. 43–51 Read article