Zobrazeno 1 - 10
of 348
pro vyhledávání: '"Rüdiger Schmidt"'
Publikováno v:
Journal of Low Frequency Noise, Vibration and Active Control, Vol 40 (2021)
Vibrations are usually caused by continuous disturbances with large amplitudes. Different from other control methods, disturbance rejection control is a potential method, which considers the unknown disturbances in the control design. To remedy the s
Externí odkaz:
https://doaj.org/article/8169b0b46e9f4f298863f67704431a71
Autor:
Lukas Trefflich, Chris Sturm, Marius Grundmann, Frank Dissinger, Siegfried R. Waldvogel, Rüdiger Schmidt-Grund
Publikováno v:
Physical Review Research, Vol 2, Iss 4, p 043216 (2020)
We report the influence of the excitation conditions on the emission behavior of a carbon-nanodot-based microcavity. The emission properties under nanosecond excitation indicate room-temperature lasing with a lasing threshold of 0.1Jcm^{−2}. The in
Externí odkaz:
https://doaj.org/article/f7b94b27768a4759ab6d77af8cc5e724
Autor:
Steffen Richter, Oliver Herrfurth, Shirly Espinoza, Mateusz Rebarz, Miroslav Kloz, Joshua A Leveillee, André Schleife, Stefan Zollner, Marius Grundmann, Jakob Andreasson, Rüdiger Schmidt-Grund
Publikováno v:
New Journal of Physics, Vol 22, Iss 8, p 083066 (2020)
Many linked processes occur concurrently in strongly excited semiconductors, such as interband and intraband absorption, scattering of electrons and holes by the heated lattice, Pauli blocking, bandgap renormalization and the formation of Mahan excit
Externí odkaz:
https://doaj.org/article/d56020bdcf61490f9946f9720fb503da
Publikováno v:
Shock and Vibration, Vol 2018 (2018)
In the framework of disturbance rejection (DR) control, the paper proposes a generalized-disturbance rejection (GDR) control with proportional-integral (PI) observer for vibration suppression of smart structures under any unknown continuous disturban
Externí odkaz:
https://doaj.org/article/3ae04d0a2d94477bb22aeec730904139
Publikováno v:
Shock and Vibration, Vol 2014 (2014)
Noncollocated control of flexible structures results in nonminimum-phase systems because the separation between the actuator and the sensor creates an input-output delay. The delay can deteriorate stability of closed-loop systems. This paper presents
Externí odkaz:
https://doaj.org/article/1465cdd51efd4854afa878c033f16a42
Publikováno v:
Journal of Engineering, Vol 2014 (2014)
This paper presents an adaptive control scheme to suppress vibration of flexible beams using a collocated piezoelectric actuator-sensor configuration. A governing equation of the beams is modelled by a partial differential equation based on Euler-Ber
Externí odkaz:
https://doaj.org/article/ef3d38d982454ffb813bd12287075c2d
Autor:
Johann Schnabel, Rüdiger Schmidt
Publikováno v:
Controlling & Management Review. 66:50-53
Autor:
Zhuang Lin, Xu-Chang Liu, Si-Yuan Chen, Jin-Shui Yang, Lihong Yang, Rüdiger Schmidt, Kai-Uwe Schröder
Publikováno v:
Mechanics of Advanced Materials and Structures. 29:6694-6704
The research and development of novel protective structures with excellent mechanical load-bearing and energy-absorbing characteristics are one of the current interests in aerospace, marine, and au...
Theoretical study on dispersion relations of chiral acoustic metamaterials considering mass-rotation
Autor:
Fang Yang, Jin-Shui Yang, Yi Wang, Shuang Li, Man-Gong Zhang, Rüdiger Schmidt, Kai-Uwe Schröder
Publikováno v:
European Journal of Mechanics - A/Solids. 100:105005
Publikováno v:
Machining Science and Technology. 25:438-454
Broaching is very efficient for machining complex-shaped slots in turbine disks made of high thermal resistant super-alloys. However, large cutting forces and high thermal flux lead to high tool we...