Results 61 to 70 of about 3,008 (263)

The Simulation Design of Linear Actuator of Downhole Oil Recovery Vibration Device

Shiyou jixie, 2016
To reproduce the wells which have declined production or even have been shut down due to various impurities clogging,a new type of downhole vibration device has been designed to improve oil recovery through the vibration effects on the reservoir.The ...
Hou Yongjun, Zhou Ran, Long Xiaokang, Fu Yunhao   +3 more
doaj  

Two-Position Linear Electromagnetic Gear-Shifting Actuator and the Influence of Ferromagnetic Material Proximity on Its Performance

IEEE Access
This paper investigates a magnet-free, two-position electromagnetic gear-shifting actuator designed for mobile machinery applications. Unlike conventional hydraulic, pneumatic, or electromechanical systems, the proposed actuator employs tangential ...
Daniil Zadorozhniuk, Ilya Petrov, Juho Kaasinen, Aleksi Mattsson, Dmitry Egorov, Touko Lankila, Juha J. Pyrhonen, Pasi Peltoniemi   +7 more
doaj   +1 more source

Design and Characterization of a High-Precision Digital Electromagnetic Actuator with Four Discrete Positions

Actuators, 2015
A high-precision planar digital electromagnetic actuator with two displacement directions and four discrete positions is presented in this paper. The four discrete positions are located at each corner of a square cavity where a mobile permanent magnet ...
Laurent Petit, Erwan Dupont, Emmanuel Doré, Frédéric Lamarque, Christine Prelle   +4 more
doaj   +1 more source

Rewriting Polymer Fate via Chemomechanical Coupling

Advanced Materials, EarlyView.
This work introduces a life‐like “living” polymer platform that can grow, degrow, and reprogram its properties after fabrication. By integrating mass transport, reversible polymerization, and controlled catalysis, the material achieves on‐demand changes in size, shape, and mechanical properties.
Jiahe Huang, Haohui Zhang, Jiehao Chen, Xuelin Sui, Febby Krisnadi, Dongjing He, Huajian Ji, Will R. Gutekunst, Michael D. Dickey, Yuhang Hu   +9 more
wiley   +1 more source

Photochemical Fuel Carrier Molecules for Robotic Embodied Energy

Advanced Materials, EarlyView.
We designed a novel fuel carrier photoresponsive molecule for on‐demand energy storage and release. Carrier molecules undergo bond scission under UV light to release chemical fuel and locally generate propulsive Marangoni flows. We demonstrate this photochemical embodied energy strategy in small‐scale robots and active matter systems, enabling ...
Chuqi Huang, Songah Jeong, Ji Woo Kim, Kanyarat Mantala, Zenghao Zhang, Hyungwoo Kim, Abdon Pena‐Francesch   +6 more
wiley   +1 more source

Large‐Area 2D Metasurface‐Based Triboelectric E‐Skin Arrays: Contact & Proximity Tactile Mapping with Broadband Acoustic Readouts

Advanced Materials, EarlyView.
Metasurface‐engineered NC‐TENG arrays integrate tactile pressure mapping, non‐contact gesture sensing, and acoustic signal readouts in one ultrathin module, and outperforms pristine PDMS in terms of electrical output and real‐time spatial mapping for next‐gen wearables.
Injamamul Arief, Swagato Sarkar, Anik Kumar Ghosh, Osvalds Verners, Kamal Kumar Meena, Su‐Hyeong Lee, Soosang Chae, Tobias A. F. König, Beate Krause, Andreas Fery, Mehmet Sait Özer, Anindya Nag, Amit Das   +12 more
wiley   +1 more source

Hybrid Magnetoactive Soft Elastomers: Material Development Toward Application in Diaphragm Pumps

Advanced Materials Technologies, EarlyView.
Hybrid magnetoactive soft elastomeric membranes are developed by combining two different types of magnetic particles. The membranes exhibit distinct mechanical, magnetic and thermal properties owing to the unique characteristics of the two magnetic particles.
Somashree Mondal, Paweł Orkisz, Bogdan Sapiński, Ralph Spolenak, Frank Clemens   +4 more
wiley   +1 more source

Tracking Control of Electronic Cam Trajectory based on the Electromagnetic Linear Actuator

Jixie chuandong, 2017
An electronic cam based on the electromagnetic linear actuator is proposed,by tracking the given trajectory to realize the required linear motion law and substitute the traditional cam mechanism.
Wang Cai, Chang Siqin
doaj  

Gain Adaptation in Sliding Mode Control Using Model Predictive Control and Disturbance Compensation with Application to Actuators

Information, 2019
In this contribution, a gain adaptation for sliding mode control (SMC) is proposed that uses both linear model predictive control (LMPC) and an estimator-based disturbance compensation.
Benedikt Haus, Paolo Mercorelli, Harald Aschemann   +2 more
doaj   +1 more source

Roadmap to Precision 3D Printing of Cellulose: Rheology‐Guided Formulation, Fidelity Assessment, and Application Horizons

Advanced Materials Technologies, EarlyView.
This critical review presents a comprehensive roadmap for the precision 3D printing of cellulose. Quantitative correlations link ink formulation and rheological properties to print fidelity and final material performance. This framework guides the development of advanced functional materials, from biomedical scaffolds to electromagnetic shielding ...
Majed Amini, Hadi Hosseini, Seyyed Alireza Hashemi, Mohammad Arjmand   +3 more
wiley   +1 more source