A simple and easy-implemented time-of-flight determination method for liquid ultrasonic flow meters based on ultrasonic signal onset detection and multiple-zero-crossing technique
Sign Up to like & getrecommendations! Published in 2021 at "Measurement"
DOI: 10.1016/j.measurement.2020.108398
Abstract: Abstract Determination of time-of-flight (TOF) is crucially important in liquid ultrasonic flow meters. There are some deficiencies of previous TOF detection methods in practical applications. Inspired by our last work and the knowledge of clustering algorithms,… read more here.
Keywords: detection; time; method; ultrasonic flow ... See more keywords
Performance Improvement of Semicontrolled Open-Winding PMSGs Based on Virtual Zero-Crossing Detection and Segment Injection of Third-Order Harmonic Current
Sign Up to like & getrecommendations! Published in 2019 at "IEEE Transactions on Power Electronics"
DOI: 10.1109/tpel.2019.2906351
Abstract: The semicontrolled open-winding permanent magnet synchronous generators (OW-PMSGs) with a common dc bus system have received more attention in recent years due to its advantages of reduced cost and simpler power supply. Good control performances… read more here.
Keywords: harmonic current; order; zero crossing; semicontrolled open ... See more keywords
A Hybrid Boundary Conduction Modulation for a Single-Phase H-bridge Inverter to Alleviate Zero-Crossing Distortion and Enable Reactive Power Capability
Sign Up to like & getrecommendations! Published in 2020 at "IEEE Transactions on Power Electronics"
DOI: 10.1109/tpel.2020.2967598
Abstract: Boundary conduction mode (BCM) featuring zero-voltage switching has caught researchers’ eyes recently. In single-phase full-bridge inverter with one leg operating in high switching frequency and one leg in line frequency, it is easy to achieve… read more here.
Keywords: distortion; voltage; reactive power; power ... See more keywords
Time delay estimation via zero-crossing of envelope
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DOI: 10.1121/1.5036429
Abstract: Time-delay estimation of an acoustic signal in an ocean waveguide is a challenging due to the received signal corrupted by noise and phase distortion caused commonly by reflection of the transmitted signal traveling to a… read more here.
Keywords: zero crossing; delay estimation; time delay; time ... See more keywords
Investigation of Zero Crossing Detection for First Return Stroke in Negative Cloud-to-Ground Lightning Flash
Sign Up to like & getrecommendations! Published in 2019 at "International Journal of Integrated Engineering"
DOI: 10.30880/ijie.2019.11.03.031
Abstract: This paper aims to investigate the minimum threshold for zero crossing detection of the first return stroke in negative cloud-to-ground lightning flashes. The uncertainty for a minimum threshold to be set into a programmed software… read more here.
Keywords: detection first; first return; return stroke; crossing detection ... See more keywords