Results 91 to 100 of about 36,808 (296)

Push recovery with stepping strategy based on time-projection control [PDF]

, 2018
In this paper, we present a simple control framework for on-line push recovery with dynamic stepping properties. Due to relatively heavy legs in our robot, we need to take swing dynamics into account and thus use a linear model called 3LP which is ...
Faraji, Salman, Ijspeert, Auke J., Razavi, Hamed   +2 more
core   +1 more source

Robust Polymer Hydrogels Improve Electric‐Fish‐Inspired Batteries

Advanced Functional Materials, EarlyView.
ABSTRACT Electric‐fish‐inspired hydrogel batteries based on ion‐concentration gradients offer an attractive route to soft power sources; however, the poor mechanical properties of existing hydrogels limit device assembly and performance. Here, we report poly(ethylene glycol) methyl ether acrylate hydrogels that enable ion‐gradient batteries composed of
Nick Zahnd, Satyajit Das, John Marc C. Puguan, Carolina Pierucci, Michael Mayer, Christoph Weder   +5 more
wiley   +1 more source

Cartesian Stiffness Shaping of Compliant Robots—Incremental Learning and Optimization Based on Sequential Quadratic Programming

Actuators
Emerging robotic systems with compliant characteristics, incorporating nonrigid links and/or elastic actuators, are opening new applications with advanced safety features, as well as improved performance and energy efficiency in contact tasks.
Nikola Knežević, Miloš Petrović, Kosta Jovanović   +2 more
doaj   +1 more source

Human Like Adaptation of Force and Impedance in Stable and Unstable Tasks [PDF]

, 2011
—This paper presents a novel human-like learning con-troller to interact with unknown environments. Strictly derived from the minimization of instability, motion error, and effort, the controller compensates for the disturbance in the environment in ...
Albu-Schaeffer, A, Burdet, E, Ganesh, G, Haddadin, S, Parusel,, S, Yang, C   +5 more
core   +1 more source

The Variable Stiffness Actuator vsaUT-II: Mechanical Design, Modeling, and Identification

IEEE/ASME Transactions on Mechatronics, 2014
In this paper, the rotational variable stiffness actuator vsaUT-II is presented. This actuation system is characterized by the property that the apparent stiffness at the actuator output can be varied independently from its position. This behavior is realized by implementing a variable transmission ratio between the internal elastic elements and the ...
Stefan S. Groothuis, Giacomo Rusticelli, ZUCCHELLI, ANDREA, Stefano Stramigioli, Raffaella Carloni   +4 more
openaire   +2 more sources

Multi‐Scale Interface Engineering of MXenes for Multifunctional Sensory Systems

Advanced Functional Materials, EarlyView.
MXenes, as two‐dimensional transition metal carbides and nitrides, demonstrate remarkable capabilities for multifunctional sensing applications. This review systematically examines multi‐scale interface engineering approaches that enhance sensing performance, enable diverse detection functionalities, and improve system‐level compatibility in MXene ...
Jiaying Liao, Sin‐Yi Pang, Jianhua Hao
wiley   +1 more source

Design Strategies and Emerging Applications of High‐Performance Flexible Piezoresistive Pressure Sensors

Advanced Functional Materials, EarlyView.
Flexible piezoresistive pressure sensors underpin wearable and soft electronics. This review links sensing physics, including contact resistance modulation, quantum tunneling and percolation, to unified materials/structure design. We highlight composite and graded architectures, interfacial/porous engineering, and microstructured 3D conductive networks
Feng Luo, Artur Ciesielski, Paolo Samorì   +2 more
wiley   +1 more source

Design and Implementation of Position Estimator Algorithm on Voice Coil Motor [PDF]

, 2018
Voice Coil Motors (VCMs) have been an inevitable element in the mechanisms that have been used for precise positioning in the applications like 3D printing., micro-stereolithography., etc.
Deshmukh, Suhas P., Mulik, Sharad S., Razban, Ali, Shewale, Mahesh S., Zambare, Hrishikesh B.   +4 more
core   +1 more source

Coating Artificial Spider Silk Fiber with Magnetic FeCo: An Effective Strategy for Creating a Flexible Magneto‐Responsive Material

Advanced Functional Materials, EarlyView.
An original method is presented for producing artificial spider silk fibers with magnetic and magnetomechanical responsiveness, which consists in coating them with a nanometer‐thick layer of FeCo alloy by sputtering deposition. The challenge of combining organic materials and inorganic magnetic nanostructures is addressed, thus taking a step forward ...
Filippo Lanaro, Federico Spizzo, Gabriele Greco, Benjamin Schmuck, Anna Rising, Lucia Del Bianco   +5 more
wiley   +1 more source

Improving the stiffness of mechanical layer jamming cable-driven soft actuators through design optimization and frame reinforcement

Mechanical Engineering Journal
Soft cable-driven actuators offer flexibility and adaptability but often lack stiffness, limiting their application in tasks requiring high load capacity. A variable stiffness mechanism has been developed to change the stiffness as needed to increase the
Chinvudh UAHCHINKUL, Satoshi MURAMATSU, Katsuhiko INAGAKI   +2 more
doaj   +1 more source