scholarly journals Ultra-high speed visualization of a flash-boiling jet in a low-pressure environment

2019 ◽  
Vol 110 ◽  
pp. 238-255 ◽  
Author(s):  
Tariq Alghamdi ◽  
Sigurdur T. Thoroddsen ◽  
J.F. Hernández-Sánchez
Keyword(s):  
High Speed ◽  
Low Pressure ◽  
Ultra High Speed ◽  
Flash Boiling

scholarly journals Producing ultra-high-speed nitrogen jets by arc heating in a low-pressure chamber

2016 ◽  
Vol 6 (1) ◽  
pp. 60-63 ◽  
Author(s):  
Wenxia Pan ◽  
Xian Meng ◽  
Heji Huang ◽  
Chengkang Wu
Keyword(s):  
High Speed ◽  
Low Pressure ◽  
Pressure Chamber ◽  
Ultra High Speed ◽  
Arc Heating

Recent Advances in Ultra-High-Speed Waveguide Photodiodes for Optical Communication Systems

2009 ◽  
Vol E92-C (7) ◽  
pp. 922-928 ◽  
Author(s):  
Kikuo MAKITA ◽  
Kazuhiro SHIBA ◽  
Takeshi NAKATA ◽  
Emiko MIZUKI ◽  
Sawaki WATANABE
Keyword(s):  
Optical Communication ◽  
Communication Systems ◽  
High Speed ◽  
Recent Advances ◽  
Ultra High Speed ◽  
Optical Communication Systems

Interior Winding Synchronous Motor for Reducing Iron Loss at Ultra-High-Speed

2020 ◽  
Author(s):  
Ryoken Masuda ◽  
Manabu Horiuchi ◽  
Mitsuhide Sato ◽  
Yinggang Bu ◽  
Masami Nirei ◽  
...  
Keyword(s):  
High Speed ◽  
Synchronous Motor ◽  
Iron Loss ◽  
Ultra High Speed

Three-Dimensional Imaging through Shock-Waves at Ultra-High Speed.

2018 ◽  
Author(s):  
Yi Chen Mazumdar ◽  
Michael E. Smyser ◽  
Jeffery Dean Heyborne ◽  
Daniel Robert Guildenbecher
Keyword(s):  
Shock Waves ◽  
High Speed ◽  
Three Dimensional ◽  
Three Dimensional Imaging ◽  
Ultra High Speed

Ultra-high-speed distributed selector IC using GaAs MESFETs

1998 ◽  
Vol 34 (25) ◽  
pp. 2442 ◽  
Author(s):  
K. Murata ◽  
T. Otsuji ◽  
Y. Imai
Keyword(s):  
High Speed ◽  
Ultra High Speed

scholarly journals Research on predictive sliding mode control strategy for horizontal vibration of ultra-high-speed elevator car system based on adaptive fuzzy

2021 ◽  
Vol 54 (3-4) ◽  
pp. 360-373
Author(s):  
Hong Wang ◽  
Mingqin Zhang ◽  
Ruijun Zhang ◽  
Lixin Liu
Keyword(s):  
Sliding Mode Control ◽  
High Speed ◽  
Sliding Mode ◽  
Mode Switching ◽  
Parameter Uncertainties ◽  
Horizontal Vibration ◽  
Adaptive Fuzzy ◽  
Mode Control ◽  
System A ◽  
Ultra High Speed

In order to effectively suppress horizontal vibration of the ultra-high-speed elevator car system. Firstly, considering the nonlinearity of guide shoe, parameter uncertainties, and uncertain external disturbances of the elevator car system, a more practical active control model for horizontal vibration of the 4-DOF ultra-high-speed elevator car system is constructed and the rationality of the established model is verified by real elevator experiment. Secondly, a predictive sliding mode controller based on adaptive fuzzy (PSMC-AF) is proposed to reduce the horizontal vibration of the car system, the predictive sliding mode control law is achieved by optimizing the predictive sliding mode performance index. Simultaneously, in order to decrease the influence of uncertainty of the car system, a fuzzy logic system (FLS) is designed to approximate the compound uncertain disturbance term (CUDT) on-line. Furthermore, the continuous smooth hyperbolic tangent function (HTF) is introduced into the sliding mode switching term to compensate the fuzzy approximation error. The adaptive laws are designed to estimate the error gain and slope parameter, so as to increase the robustness of the system. Finally, numerical simulations are conducted on some representative guide rail excitations and the results are compared to the existing solution and passive system. The analysis has confirmed the effectiveness and robustness of the proposed control method.

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