Results 81 to 90 of about 123,626 (295)

Dynamic modeling for spindle thermal error in machine tools under time-varying rotational speeds and cooling states

Case Studies in Thermal Engineering
To accurately predict and compensate for spindle thermal error under time-varying rotational speeds and cooling states, this paper proposes a novel dynamic thermal error modeling method characterized by a dual-attention-enhanced parallel branch ...
Ji Peng, Ke Yang, Zhirong Zhang, Yebing Mao, Feng Tan, Xiaobing Hu, Ming Yin, Zhoujie Zhao, Longjiang Li   +8 more
doaj   +1 more source

Statistical uncertainty in quantum optical photodetection measurements [PDF]

, 1998
We present a complete statistical analysis of quantum optical measurement schemes based on photodetection. Statistical distributions of quantum observables determined from a finite number of experimental runs are characterized with the help of the ...
Banaszek K., Eadie W. T., Jacobs K., Konrad Banaszek, Tan S. M., Vogel W.   +5 more
core   +3 more sources

Counterion Dependent Side‐Chain Relaxation Stiffens a Chemically Doped Thienothiophene Copolymer

Advanced Functional Materials, EarlyView.
Oxidation of a thienothiophene copolymer, p(g3TT‐T2), via different doping strategies and dopant molecules resulted in materials with similar oxidation levels and a high electrical conductivity of ≈100 S cm−1. However, mechanical properties varied significantly, with sub‐glass transition temperatures and elastic moduli spanning from –44°C to –3°C and ...
Mariavittoria Craighero, Meghna Jha, Elsa Veronica Flores‐Vela, Joost Kimpel, Andreas Schaefer, Jiali Guo, Jesika Asatryan, Alberto Peinador Veiga, Shuichi Haraguchi, Per‐Anders Carlsson, Jaime Martín, Mariano Campoy‐Quiles, Christian Müller   +12 more
wiley   +1 more source

Quantum control of $^{88}$Sr$^+$ in a miniature linear Paul trap

, 2011
We report on the construction and characterization of an apparatus for quantum information experiments using $^{88}$Sr$^+$ ions. A miniature linear radio-frequency (rf) Paul trap was designed and built.
A. Keselman, A. Ludlow, A. Madej, B.B. Blinov, C. Monroe, D. Berkeland, D. Berkeland, D. Leibfried, D. Leibrandt, D. Stick, D.J. Wineland, F. Schmidt-Kaler, F. Schmidt-Kaler, I. Marzoli, J. Benhelm, J. Benhelm, J. Britton, J.H. Wesenberg, L. Deslauriers, M. Brownnutt, M. Rowe, N. Akerman, N. Akerman, N. Daniilidis, Q.A. Turchette, R. Ozeri, R.B. Blakestad, R.J. Epstein, S. Kotler, S. Kotler, S. Olmschenk, S. Seidelin, S. Wang, S.X. Wang, V. Letchumanan, W. Alt, Y. Glickman   +36 more
core   +1 more source

Application of Laguerre based adaptive predictive control to Shape Memory Alloy (SMA) actuators [PDF]

, 2013
This paper discusses the use of an existing adaptive predictive controller to control some Shape Memory Alloy (SMA) linear actuators. The model consists in a truncated linear combination of Laguerre filters identified online.
GIRAUD-AUDINE, Christophe, KANNAN, S., PATOOR, Etienne   +2 more
core   +8 more sources

Unraveling Quantitative Sensing Mechanism and Predictive Molecular Metrics for High‐Performance OFET Amine Sensors

Advanced Functional Materials, EarlyView.
This study introduces a novel chloro boron subphthalocyanine/polymer blend OFET sensor achieving 0.005 ppb limit of detection for ammonia at room temperature and high selectivity against similar amines. An original theoretical framework is proposed to describe the sensing mechanism, relating analyte molecular volume and Lewis basicity to sensor ...
Kavinraaj Ella Elangovan, Matthew P. Confer, Rui Zhang, Siqing Wang, Jeffrey S. Moore, Rohit Bhargava, Ying Diao   +6 more
wiley   +1 more source

Principles for numerical compensation of elastic deformations in computerized numerical control machine tools

Academia Engineering
Nowadays, precision methods for computerized numerical control (CNC) machine tools analyze geometric, kinematic, dynamic, and thermal errors separately.
Alexander P. Kuznetsov, Hans-Joachim Koriath   +1 more
doaj   +1 more source

Thermal Error Measurement and Analysis of Vertical Machining Center

MATEC Web of Conferences, 2019
In this paper, the thermal calculation and thermal-structural coupling analysis of the vertical machining center are carried out to obtain the theoretical values of thermal generation and thermal displacement. Combined with the thermal structure analysis
Ma Yumeng, Cui Huanyong, Li Changchun, Wu Changzhong, Zhao Zhenyuan   +4 more
doaj   +1 more source

A review on transfer learning in spindle thermal error compensation of spindle [PDF]

Advanced Manufacturing
Data-driven approaches offer unprecedented opportunities for smart manufacturing to facilitate the transition to Industry 4.0-based production. One of the key factors affecting the accuracy of machine tools is the thermal error caused by thermal ...
Yue Zheng, Guoqiang Fu, Sen Mu, Sipei Zhu, Kunlong Lin, Long Yang   +5 more
doaj   +1 more source

Concept and architecture of a new apparatus for cylindrical form measurement with a nanometric level of accuracy [PDF]

, 2012
In relation to the industrial need and to the progress of technology, Laboratoire National de M´etrologie et d’Essais (LNE) would like to improve the measurement of its primary pressure standards, spherical and flick standards.
DAMAK, Mohamed, DAVID, Jean-Marie, GIBARU, Olivier, NOUIRA, Hichem, VISSIERE, Alain   +4 more
core   +6 more sources