Results 51 to 60 of about 8,788 (300)

All‐Polyimide‐Mediated Liquid Metal Assembly on Aerogels for Breathable and Robust Electronic Skins

Advanced Materials, EarlyView.
An all‐polyimide‐mediated assembly strategy resolves the fundamental conflict between physiological breathability and electromechanical robustness in wearable electronics. By integrating a polyamic acid‐encapsulated liquid metal ink onto an ultralight polyimide aerogel, imidization‐induced contraction enables low‐temperature conductive activation and ...
Haijun Zhu, Jiancheng Dong, Hao Qiu, Je Hyeong Kim, Xingyu Liu, Shiyin Lin, Mengting Zheng, Chang Zhou, Yuduo Zhang, Jiayu Hou, Kangjia Geng, Yuchen Wang, Yidong Peng, Haoran Liu, Guanzheng Wu, Yunpeng Huang, Yongsheng Luo, Steve Park, Tianxi Liu   +18 more
wiley   +1 more source

Modeling and Simulation of Airborne Radar Antenna Servo Control with Disturbance Observer

Hangkong gongcheng jinzhan, 2021
Accuracy of airborne radar antenna servo control(ARASC)is one of important index for radar system to accurately search,identify and detect targets.Radar antenna bears greater air resistance during scanning motion,because of the wind speed and moving ...
ZHAO Xi, LI Qimeng
doaj   +1 more source

Engineering Layered Magnetic Hydrogels for Cell Placement via Shear and Magnetic Field‐Induced Assembly

Advanced Materials, EarlyView.
Magnetic particles are organized into layered architectures by combining shear flow and magnetic fields, with the resulting structures governed by appropriate Mason numbers. The programmed assemblies provide spatial guidance for cell placement, linking field‐controlled self‐assembly, flow‐induced structuring and biological organization.
Guillermo Camacho, Jose R. Morillas, Jesús García‐Gutiérrez, Stefania Nardecchia, Óscar Martínez‐Cano, Juan de Vicente   +5 more
wiley   +1 more source

Experimental study of the VFD’s speed stabilization efficiency under torque disturbances

International Journal of Power Electronics and Drive Systems (IJPEDS), 2021
The article presents a technique for experimental research of variable frequency drives experiencing periodic torque disturbances of variable frequency. The technique is based on the nonlinear transfer function of a link of an asynchronous electric motor, which forms an electromagnetic torque, proposed in previously published articles.
Vladimir L. Kodkin, Aleksandr S. Anikin
openaire   +3 more sources

Development and Optimization of the Build-in Torque Sensor for Harmonic Drive

, 2015
The development of human-robot cooperation and the demand of high-precision robot control have increasingly spurred the usage of joint torque sensors. A build-in torque sensor for harmonic drive is researched in this paper, which utilizes strain gauges ...
Cui L(崔龙), Yuechao Wang, Wang XZ(王雪竹), Wang YC(王越超), Hongyi Li, Li HY(李洪谊), Xuezhu Wang, Long Cui   +7 more
core   +1 more source

Magnetic‐Field Modulation of Charge Transport in Non‐Fullerene Semiconductors for Enhanced Hydrogen Evolution

Advanced Materials Interfaces, EarlyView.
ABSTRACT This study demonstrates that weak magnetic fields (16–40 mT) increase the efficiency of the hydrogen evolution reaction (HER) in electrocatalysts based on non‐fullerene acceptor (NFA) derivatives IT‐4Cl and Y6. Electrochemical measurements reveal that the application of the magnetic field reduces the onset potential and increases the current ...
João Paulo Araujo Souza, Marlus Koehler, John Fredy Ricardo Marroquin, Jorlandio Francisco Felix, Thanh‐Tuân Bui, Paulo Eduardo Narcizo de Souza, Sebastião William da Silva, Luana Wouk   +7 more
wiley   +1 more source

From the Discovery of the Giant Magnetocaloric Effect to the Development of High‐Power‐Density Systems

Advanced Materials Technologies, EarlyView.
The article overviews past and current efforts on caloric materials and systems, highlighting the contributions of Ames National Laboratory to the field. Solid‐state caloric heat pumping is an innovative method that can be implemented in a wide range of cooling and heating applications.
Agata Czernuszewicz, Yaroslav Mudryk, Jun Cui, Lucas Griffith, Duane D. Johnson, Julie Slaughter   +5 more
wiley   +1 more source

A SAKF-Based Composed Control Method for Improving Low-Speed Performance and Stability Accuracy of Opto-Electric Servomechanism

Applied Sciences, 2019
The opto-electric servomechanism (OES) plays an important role in obtaining clear and stable images from airborne infrared detectors. However, the inherent torque disturbance and the noisy speed signal cause a significant decline in the inertial ...
Chao Qi, Xianliang Jiang, Xin Xie, Dapeng Fan   +3 more
doaj   +1 more source

Perancangan Jaringan Syaraf Tiruan Sebagai Estimator Load Disturbance Torque Pada Sistem Servo Modular MS150 DC [PDF]

, 2018
Penggunaan motor DC telah digunakan secara luas baik pada sistem yang membutuhkan sensitivitas kecil hingga sensitivitas yang tinggi. Pada sistem dengan sensitivitas yang tinggi butuh untuk menjaga kepresisian semaksimal mungkin bahkan akibat adanya load
Munir, Syahrul
core  

Transducers Across Scales and Frequencies: A System‐Level Framework for Multiphysics Integration and Co‐Design

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, Mengyao Xiao, Zhouli Sui, Yinpeng Wang, Daoye Zheng, Yuxin Liu, Luwei Wang, Huajun Liu, Chengkuo Lee   +8 more
wiley   +1 more source