Results 21 to 30 of about 47,055 (260)
Energy Reports, 2022 This paper aims to increase the power production of gearless permanent magnet synchronous generator (PMSG) based wind energy conversion systems (WECS) in strong (greater than 25 m/s) wind speed regions.
Nyam Jargalsaikhan +5 more
doaj +1 more source
Integrated aeroelastic and control analysis of wind turbine blades equipped with microtabs [PDF]
, 2015 This paper presents the results of an investigation into the performance of different controllers in active load control of wind turbine blades equipped with microtabs.
Macquart, Terence, Maheri, Alireza
core +1 more source
Amplitude and rotational speed control of variable length pendulum by periodic input
, 2021 application/pdfIn this paper, a control law to stabilize the amplitude or rotational speed of a variable length pendulum to a desired value by periodically changing the position of the center of gravity is proposed.
青柳, 学 +5 more
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Effects of cathode rotation and substrate materials on electrodeposited CoMnP thick films
Materials Research Express, 2021 In this study, rotating-cathode electrodeposition was performed to deposit 30 μ m thick CoMnP films on various substrate materials at room temperature. The electrodeposition configuration and parameters realized a constant current efficiency of about 95%,
Chun-Wei Wu +4 more
doaj +1 more source
Sensorless position control of permanent magnet motors with pulsating current injection and compensation of motor end-effects [PDF]
, 2011 The sensorless position control of permanent-magnet motors is successfully implemented by superimposing a high-frequency voltage signal on the voltage reference or adding a high-frequency current signal to the current reference.
G Pellegrino +13 more
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Novel piezoelectric crawling robot with multiple degrees of freedom
AIP Advances, 2021 Traditional ultrasonic motors can usually produce either linear or rotational motion. Piezoelectrically driven structures with multiple degrees of freedom require two or more ultrasonic motors, and the manufacturing process is associated with some ...
Ruikun Niu, Yu Guo
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Nihon Kikai Gakkai ronbunshu, 2021 Automatic autorotation landing system for helicopters that is applicable under various flight conditions is proposed. This system consists of a control system that stabilizes rotational speed of the main rotor and reduces the descent speed before landing,
Takumi TOMITA, Daigo FUJIWARA
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Sensorless interior permanent magnet synchronous motor control with rotational inertia adjustment
Advances in Mechanical Engineering, 2016 Mechanical model is generally required in high dynamic sensorless motor control schemes for zero phase lag estimation of rotor position and speed. However, the rotational inertia uncertainty will cause dynamic estimation errors, eventually resulting in ...
Yongle Mao +3 more
doaj +1 more source
Event-Based Angular Speed Measurement and Movement Monitoring
Sensors, 2022 Computer vision techniques can monitor the rotational speed of rotating equipment or machines to understand their working conditions and prevent failures.
George Oliveira de Araújo Azevedo +5 more
doaj +1 more source
Journal of Fluid Science and Technology, 2020 Compared with conventional high-specific-speed axial flow pump, better cavitation performance and compact size have been achieved in contra-rotating axial flow pump, where the rear rotor is employed additionally to the front rotor to convert the swirling
De ZHANG +4 more
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