Results 51 to 60 of about 4,418,098 (306)

Hybrid Position and Force Control Without Force Sensor

Journal of Robotics and Mechatronics, 1993
Generally, hybrid control is realized by sensor signal feedback of position and force. However, some robot manipulators do not have a force sensor due to the environment. Moreover, a precise force sensor is very expensive. In order to overcome these problems, we propose the estimation system of reaction force without using a force sensor.
Kiyoshi OHISHI, Masaru MIYAZAKI, Masahiro FUJITA   +2 more
openaire   +2 more sources

Function based control for bilateral systems in tele-micromanipulation [PDF]

, 2008
Design of a motion control system should take into account (a) unconstrained motion performed without interaction with environment or any other system, and (b) constrained motion with system in contact with environment or other systems.
Elitas, Meltem, Elitaş, Meltem, Khan, Shahzad, Nergiz, Ahmet Ozcan, Nergiz, Ahmet Özcan, Sabanovic, Asif, Şabanoviç, Asif   +6 more
core   +1 more source

A methionine‐lined active site governs carbocation stabilization and product specificity in a bacterial terpene synthase

FEBS Letters, EarlyView.
This study reveals a unique active site enriched in methionine residues and demonstrates that these residues play a critical role by stabilizing carbocation intermediates through novel sulfur–cation interactions. Structure‐guided mutagenesis further revealed variants with significantly altered product profiles, enhancing pseudopterosin formation. These
Marion Ringel, Carl P. O. Helmer, Shani Zev, Ronja Driller, Emily Buhr, Markus Reinbold, Renana Schwartz, Gabriel Foley, Mikael Boden, Daniel Garbe, Gerhard Schenk, Dan Thomas Major, Bernhard Loll, Thomas Brück   +13 more
wiley   +1 more source

Satellite Selection Strategy and Method for Signals of Opportunity Navigation and Positioning with LEO Communication Satellites

Sensors
Experts and scholars from various nations have proposed studying low Earth orbit (LEO) satellite signals as the space-based signals of opportunity (SOPs) for navigation and positioning.
Yanhua Tao, Yang Guo, Shaobo Wang, Chuanqiang Yu, Zimo Zhu   +4 more
doaj   +1 more source

Optimal Sensor Deployment and Velocity Configuration With Hybrid TDOA and FDOA Measurements

IEEE Access, 2019
Source localization based on the hybrid time-difference-of-arrival (TDOA) and frequency-difference-of-arrival (FDOA) measurements from distributed sensors is an essential problem in wireless sensor networks (WSNs).
Weijia Wang, Peng Bai, Yubing Wang, Xiaolong Liang, Jiaqiang Zhang   +4 more
doaj   +1 more source

Research on Lazy Theta* Route Planning Algorithm Based on Grid Point Optimization

Applied Sciences, 2022
In recent years, the problem of route planning in complex battlefield environments has attracted significant attention. With the increasingly worrying international situation, safety and flyability in a continuously changing threat environment are ...
Zhizhou Gao, Lujun Wan, Ming Cai, Xinyu Xu   +3 more
doaj   +1 more source

Interfacial force sensor with force-feedback control [PDF]

International Technical Digest on Electron Devices, 2002
A novel interfacial force microscope capable of measuring the forces between two surfaces over the entire range of surface separations, up to contact, has been developed. The design is centered around a differential capacitance displacement sensor where the common capacitor plate is supported by torsion bars.
Joyce, S.A., Houston, J.E., Smith, B.K.
openaire   +1 more source

Towards a precision measurement of the Casimir force in a cylinder-plane geometry [PDF]

, 2005
We report on a proposal aimed at measuring the Casimir force in a cylinder-plane configuration. The Casimir force is evaluated including corrections due to finite parallelism, conductivity, and temperature.
B. V. Derjaguin, B. V. Derjaguin, D. A. R. Dalvit, E. Fischbach, E. M. Lifshitz, E. M. Lifshitz, E. M. Lifshitz, F. D. Mazzitelli, H. B. G. Casimir, H. Gies, K. A. Milton, M. Bordag, M. Brown-Hayes, P. Milonni, R. Onofrio, S. M. Carroll, S. Reynaud, V. M. Mostepanenko, V. Sahni, W. J. Kim, Y. B. Zeldovich   +20 more
core   +3 more sources

Hyperosmotic stress induces PARP1‐mediated HPF1‐dependent mono(ADP‐ribosyl)ation

FEBS Letters, EarlyView.
Sorbitol‐induced hyperosmotic stress rapidly induces reversible mono(ADP‐ribosyl)ation (MARylation) on PARP1 without the signs of genotoxic signaling. We show that PARP1 autoMARylation is HPF1 dependent and forms hydroxylamine‐resistant O‐glycosidic linkages.
Anna Georgina Kopasz, Mihály Mérey, Rebeka Vásárhelyi, Ramóna Pék, Victor Imburchia, László Henn, Adrián Kószó, Nicholas D. Lakin, Ivan Ahel, Sébastien Huet, Ágnes Czibula, Gyula Timinszky   +11 more
wiley   +1 more source

Changes in physiological parameters and thermal comfort when wearing protective clothing in long-range aeromedical evacuation: a prospective, non-blinded, two-stage crossover self-controlled study

Journal of Physiological Anthropology
Background The thermos-physiological characteristics of medical personnel wearing protective clothing during prolonged activities under low oxygen pressure (LOP) and normal oxygen pressure (NOP) are crucial. Methods The average age of the 24 participants
Yadi Zhang, Fan Jiang, Zhenyao Song, Jintao Lian, Licun Han   +4 more
doaj   +1 more source