Results 121 to 130 of about 23,291 (287)
Abstract and Applied Analysis, 2013 We present an advanced design methodology for pulse-width-modulated (PWM) DC-AC signal generation. Using design methods based on the Walsh transform, AC sinusoidal signals can be approximated by suitable PWM signals.
Francisco Palacios-Quiñonero +3 more
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Fuzzy Controller for Matrix Converter System to Improve its Quality of Output
, 2010 In this paper, Fuzzy Logic controller is developed for ac/ac Matrix Converter. Furthermore, Total Harmonic Distortion is reduced significantly. Space Vector Algorithm is a method to improve power quality of the converter output.
Gurusamy, G., Mahendran, Nagalingam
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Development of Laterally Graded X‐Ray Multilayer Optics
Advanced Materials Technologies, EarlyView.This work presents the development of laterally graded X‐ray multilayer optics with both constant and variable lateral gradients. By precisely controlling substrate speed profiles and mask design, these multilayers achieve highly accurate lateral gradients and excellent sagittal thickness uniformity, making them ideal for spectroscopy application at ...
Arindam Majhi +11 more
wiley +1 more source
矿业科学学报, 2017 The selective harmonic elimination(SHE) based staircase modulation is a commonly used fundamental frequency modulation strategy for multilevel converters.However, the solutions to the staircase SHE equations cannot cover the full range of modulation ...
Yang Kehu +3 more
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Multiscale Acoustic Bubble Actuators Using Bioinspired Liquid‐Repellent Microstructures
Advanced Materials Technologies, EarlyView.The article presents multiscale acoustic bubble actuators using bioinspired liquid‐repellent microstructures, enabling programmable trapping, pumping, mixing, and precise flow control. Mimicking springtail microstructures, these scalable actuators (200 µm–1 mm) offer multifunctionality in all‐in‐one devices, letter‐shaped arrays, and 3D cube ...
Cem Balda Dayan +8 more
wiley +1 more source
Возбуждение резонансной нагрузки синусоидальным напряжением синтезированным многовекторным методом снижает потери проводимости и увеличивает надежность [PDF]
, 2014 Показано перевагу застосування багатовекторного методу синтезу синусоідальної напруги з подавленням вищих гармонік при роботі на резонансну нагрузку. Для перетворювачів працюючих при дуже високій температурі (175С) виграш в очікуваному часі життя може ...
Tyshko, Alexey +2 more
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Advanced Materials Technologies, EarlyView.This review explores advances in wearable and lab‐on‐chip technologies for breast cancer detection. Covering tactile, thermal, ultrasound, microwave, electrical impedance tomography, electrochemical, microelectromechanical, and optical systems, it highlights innovations in flexible electronics, nanomaterials, and machine learning.
Neshika Wijewardhane +4 more
wiley +1 more source
Kongzhi Yu Xinxi Jishu, 2016 Aiming at the problems of embedded permanent magnet synchronous motor at low switching frequency, such as current distortion of high speed deep weak magnetic field and large torque ripple, it analyzed the inhibitory effect of conventional motor control ...
ZANG Xiaodi, TIAN Dewen
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Advanced Materials Technologies, EarlyView.Transducers convert physical signals into electrical and optical representations, yet each mechanism is bounded by intrinsic trade‐offs across bandwidth, sensitivity, speed, and energy. This review maps transduction mechanisms across physical scale and frequency, showing how heterogeneous integration and multiphysics co‐design transform isolated ...
Aolei Xu +8 more
wiley +1 more source
Selective harmonic elimination in PUC‐5 multilevel inverter using hybrid IGWO‐DE algorithm
Engineering ReportsThe use of a multilevel inverter has received significant attention in recent years due to its numerous advantages. Because of the widespread use of multilevel inverters in industries and applications that require a wide range of voltages, achieving high‐
Zaid Sifat +6 more
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