Results 81 to 90 of about 35,267 (307)

Direct torque control of brushless DC drives with reduced torque ripple [PDF]

, 2005
The application of direct torque control (DTC) to brushless ac drives has been investigated extensively. This paper describes its application to brushless dc drives, and highlights the essential differences in its implementation, as regards torque ...
Howe, D., Liu, Y., Zhu, Z.Q.
core   +1 more source

Cross‐Scale Hierarchical Targeted Delivery System Based on Small‐Scale Magnetic Robots

Advanced Robotics Research, EarlyView.
This article reviews a cross‐scale hierarchical targeted delivery system that integrates magnetic continuum robots and magnetic microrobots. By combining rapid long‐range navigation with precise microscale targeting, the system overcomes key limitations of single‐scale approaches.
Junjian Zhou, Zhiqiang Chen, Yuanbiao Ma, Zhiqiang Tang, Qianqian Wang   +4 more
wiley   +1 more source

Characterisation of friction and lubrication regimes in premium tubular connections [PDF]

, 2012
A friction test rig has been developed to carry out repeated sliding friction tests for premium tubular connections. The test rig enables accurate measurement of friction in various contact regimes which are relevant to the threaded connections between ...
,, Bezensek, B, Le, HR, Leech, A, Roberts, A, Stewart, F, Williams, JA   +6 more
core   +1 more source

Functional Fibers in Soft Robotics: Advances in Material, Structural, and Systemic Tactics

Advanced Robotics Research, EarlyView.
Fiber‐form robotic systems offer a scalable pathway toward embodied intelligence in soft robotics. This review surveys functional fibers as material, structural, and systemic elements, highlighting advances in responsive materials, architectural programing, and fabrication strategies.
Joonhee Won, Jaehyun Jang, Hyeonseo Kim, Inyoung Choi, Steve Park, Seongjun Park   +5 more
wiley   +1 more source

Texture design for light touch perception

Biosurface and Biotribology, 2017
This study focused on active light touch with predefined textures specially-designed for tactile perception. The counter-body material is stainless steel sheet.
S. Zhang, X. Zeng, D.T.A. Matthews, A. Igartua, E. Rodriguez–Vidal, J. Contreras Fortes, E. Van Der Heide   +6 more
doaj   +1 more source

Pulsed phase locked loop strain monitor [PDF]

, 1982
The RF output of a voltage controlled oscillator (VCO) is periodically gated to a transducer which produces acoustic waves in a bolt. The reflected acoustic waves are converted to electrical signals by the transducer and gated to a mixer which also ...
Heyman, J. S.
core   +1 more source

Strain-Rate Frequency Superposition in Large-Amplitude Oscillatory Shear

, 2010
In a recent work, Wyss, {\it et.al.} [Phys. Rev. Lett., {\bf 98}, 238303 (2007)] have noted a property of `soft solids' under oscillatory shear, the so-called strain-rate frequency superposition (SRFS).
A. Collyer, Ashish Lele, Chirag Kalelkar, J. Ferry, J. Kauppinen, R. Christensen, Samruddhi Kamble, W. Press   +7 more
core   +1 more source

Chronic Hypoxia Disrupts Spermatogenesis Through ASXL2–EZH2–Mediated Microtubule Destabilization

Advanced Science, EarlyView.
This study reveals the mechanism by which chronic hypoxia impairs spermatogenesis via the ASXL2–EZH2 axis, hindering the transition of spermatids from round to elongated forms. Key findings reveal that under hypoxic conditions, downregulated ASXL2 expression reduces EZH2 binding to the CEP162 promoter, leading to decreased H3K27me3 modification and ...
Jun Yin, Mengjie Zhang, Wenying Liu, Wenlong Shen, Debao Li, Hongming Miao, Fang Deng, Gang Zhang, Yi Tian, Yi Zhang, Zhihu Zhao, Bing Ni   +11 more
wiley   +1 more source

Analysis and Compensation of Phase Shift Errors of an Open-Loop Current Transducer Considering Eddy Current

IEEE Access
The open-loop current transducer comprises a magnetic core made of soft magnet material and includes a Hall sensor. Traction motors in applications such as electric vehicles tend to be driven at high speeds.
Kiseok Kim, Yoonjae Kim, Ji-Hoon Han, Sun-Ki Hong   +3 more
doaj   +1 more source

Position/force control of master–slave antagonistic joint actuated by water hydraulic artificial muscles

International Journal of Advanced Robotic Systems, 2019
Because of the high force–weight ratio of water hydraulic artificial muscle and its high compatibility with an underwater environment, the water hydraulic artificial muscle has received increasing attention due to its potential uses in marine engineering
Dayong Ning, Jinkai Che, Zengmeng Zhang, Hao Tian, Jiaoyi Hou, Yongjun Gong   +5 more
doaj   +1 more source