Electrical Engineering: Recent submissions
Now showing items 461-480 of 2649
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Novel techniques for improving NNetEn entropy calculation for short and noisy time series
( Springer Science and Business Media B.V. , 2023 , Article)Entropy is a fundamental concept in the field of information theory. During measurement, conventional entropy measures are susceptible to length and amplitude changes in time series. A new entropy metric, neural network ... -
Micromechanical properties of hydroxyapatite nanocomposites reinforced with CNTs and ZrO2
( Elsevier , 2023 , Article)This study examined the mechanical properties, wettability, and tribology of hydroxyapatite (HA)–zirconia (ZrO2)–carbon nanotube (CNTs) ceramic nanocomposites (with various CNT ratios (x): 1, 5, and 10 wt%). HA–ZrO2–CNT-x ... -
DSPNet: A Self-ONN Model for Robust DSPN Diagnosis From Temperature Maps
( Institute of Electrical and Electronics Engineers Inc. , 2023 , Article)Diabetic sensorimotor polyneuropathy (DSPN) leads to pain, diabetic foot ulceration (DFU), amputation, and death. The diagnosis of advanced DSPN to identify those at risk is key to preventing DFU and amputation. Alterations ... -
Novel linearizer for tangent/cotangent converter
( IEEE , 2009 , Conference Paper)Resolvers and other types of sinusoidal encoders provide electrical signals whose amplitudes are related to the sine and cosine of the mechanical shaft angle ¿ over the full 360° range. The tangent/cotangent converter, ... -
A novel amplitude-to-phase converter for sine/cosine position transducers
( Taylor and Francis Group , 2007 , Article)Resolvers and various other types of sine/cosine encoders are used for both angular and linear position sensing. These devices provide analogue signals in the form of the sine and the cosine of an angle related to the ... -
Precise, wide-range approximations to arc sine function suitable for analog implementation in sensors and instrumentation applications
( IEEE , 2005 , Article)This paper presents four newly developed algebraic approximations of the inverse sine function, defined for the full [-1,+1] input range. These approximations contain few terms, and have numerical coefficients with low ... -
Design and Assembly of Miniature Zirconia Oxygen Sensors
( IEEE , 2004 , Article)Zirconia oxygen sensors are highly selective solid-state devices used for many applications, including combustion control for better fuel economy and lower emissions. Stabilized zirconia electrolyte meets the device ... -
A low power oscillator based temperature sensor for RFID applications
( IEEE Computer Society , 2013 , Conference Paper)In this paper we present a temperature sensor based on a ring oscillator. The ring oscillator uses the CMOS thyristor delay element and has an extremely low power consumption of about 47nW at room temperature with a supply ... -
A new closed-loop converter for sinusoidal encoders - Preliminary results
( IEEE , 2009 , Conference Paper)Sinusoidal position transducers provide accurate and reliable representation of the mechanical position of their shafts. The sine/cosine transducers signals may be used in open loop or closed loop arrangements for the ... -
A novel resolver converter based on a modified tracking method
( IEEE , 2013 , Conference Paper)Resolvers are robust and reliable transducers, working as rotary transformers, and are used for mechanical angle measurement. In the present work, the two stator windings of the resolver are excited with sine and cosine ... -
A new fast tracking resolver for mechanical angle measurement
( Institute of Electrical and Electronics Engineers Inc. , 2013 , Conference Paper)The resolver is a mechanical angle and rotational speed transducer that operates as rotary transformer; its two stator windings are excited with sine and cosine AC signals and its rotor winding produces a sinusoidal signal ... -
Theory and simulation of a miniature zirconia sensor for control of the air-to-fuel ratio in combustion systems
( IEEE , 2001 , Article)The theory of operation on both sides of stoichiometry of a miniature zirconia oxygen pump-gauge incorporating a diffusion hole is discussed. Computer simulation of the sensor output when used for monitoring the air-to-fuel ... -
A low power temperature sensor based on a voltage to time converter cell
( IEEE , 2013 , Conference Paper)In this paper we propose a temperature sensor, based on a voltage to time converter cell (VTC). A VTC is frequently employed in time to digital converters for generating a delay that is proportional to the input voltage. ... -
Continuous-Time ΣΔ ADC with Implicit Variable Gain Amplifier for CMOS Image Sensor
( Hindawi Publishing Corporation , 2014 , Article)This paper presents a column-parallel continuous-time sigma delta (CTSD) ADC for mega-pixel resolution CMOS image sensor (CIS). The sigma delta modulator is implemented with a 2nd order resistor/capacitor-based loop filter. ... -
Review and simulation of leakage current in transformerless microinverters for PV applications
( Elsevier , 2017 , Article Review)Designing microinverters without transformers enhances system efficiency and power density and reduces cost. However, the transformer removal results in loss of galvanic isolation that leads to leakage current circulation. ... -
A new tracking technique for mechanical angle measurement
( Elsevier , 2014 , Article)Resolvers and other types of sine/cosine encoders are used for measurement of mechanical angles. These devices produce quadrature signals in the form of sine and cosine of the unknown angle, and require converters to extract ... -
Angular position measurement using resolvers together with a robust linearization technique
( Institute of Electrical and Electronics Engineers Inc. , 2015 , Conference Paper)Resolvers are used for both absolute angular and linear position sensing. A robust amplitude to phase converter is described for the determination of position from the sine and cosine output signals of the resolver. The ... -
Integration of federated machine learning and blockchain for the provision of secure big data analytics for Internet of Things
( Elsevier , 2021 , Article)Big data enables the optimization of complex supply chains through Machine Learning (ML)-based data analytics. However, data analytics comes with challenges such as the loss of control and privacy leading to increased risk ... -
A Novel OFDM Waveform with Enhanced Physical Layer Security
( IEEE , 2021 , Article)This letter proposes a secure orthogonal frequency division multiplexing (OFDM) waveform based on two physical-layer secrecy enhancing methods. The first method is time-domain pre-coding that involves interleaving and ... -
Decentralized multiuser diversity with opportunistic packet transmission in MIMO wireless sensor networks
( Elsevier , 2013 , Article)In this study, we consider a single-hop wireless sensor network where both the sensor nodes and the controller node have multiple antennas. We focus on single beam opportunistic communication and propose a threshold-based ...
