Controller validation for stability and performance based on a frequency domain uncertainty region obtained by stochastic embedding

2002 ◽  
Author(s):  
X. Bombois ◽  
M. Gevers ◽  
G. Scorletti
Keyword(s):  
Frequency Domain ◽  
Uncertainty Region ◽  
And Performance

Statically Indeterminate Main Bearing Load Calculation in Frequency Domain for Usage in Early Concept Phase

2012 ◽  
Author(s):  
Tigran Parikyan ◽  
Thomas Resch
Keyword(s):  
Frequency Domain ◽  
Combustion Engine ◽  
Main Bearing ◽  
Engine Model ◽  
Bearing Load ◽  
3D Engine ◽  
Bearing Loads ◽  
And Performance ◽  
Engine Development ◽  
Early Concept Phase

The paper discusses the importance of a numerical method for fast and accurate prediction of main bearing loads of inner combustion engine and its place in the concept phase of engine development process. An approach based on linear dynamic analysis of 3D engine model in frequency domain is presented. Implemented within a separate module of AVL software package EXCITE Designer, it delivers a combination of accuracy and performance suitable for this task. An application example illustrates the method.

scholarly journals Real-time Search for Compact Binary Mergers in Advanced LIGO and Virgo's Third Observing Run Using PyCBC Live

2021 ◽  
Vol 923 (2) ◽  
pp. 254
Author(s):  
Tito Dal Canton ◽  
Alexander H. Nitz ◽  
Bhooshan Gadre ◽  
Gareth S. Cabourn Davies ◽  
Verónica Villa-Ortega ◽  
...  
Keyword(s):  
Gravitational Wave ◽  
Frequency Domain ◽  
Rapid Identification ◽  
Matched Filtering ◽  
Low Latency ◽  
The Third ◽  
Compact Binary ◽  
Binary Mergers ◽  
And Performance

Abstract The third observing run of Advanced LIGO and Advanced Virgo took place between 2019 April and 2020 March and resulted in dozens of gravitational-wave candidates, many of which are now published as confident detections. A crucial requirement of the third observing run was the rapid identification and public reporting of compact binary mergers, which enabled massive follow-up observation campaigns with electromagnetic and neutrino observatories. PyCBC Live is a low-latency search for compact binary mergers based on frequency-domain matched filtering, which was used during the second and third observing runs, together with other low-latency analyses, to generate these rapid alerts from the data acquired by LIGO and Virgo. This paper describes and evaluates the improvements made to PyCBC Live after the second observing run, which defined its operation and performance during the third observing run.

Performance of the Yb/n-CdSe/C Tunneling Barriers

2018 ◽  
Vol 13 (10) ◽  
pp. 1493-1498
Author(s):  
A. F. Qasrawi
Keyword(s):  
Thin Films ◽  
Frequency Domain ◽  
Physical Vapor Deposition ◽  
Optoelectronic Device ◽  
Depletion Region ◽  
X Ray ◽  
Tunneling Mechanism ◽  
Vapor Deposition Technique ◽  
And Performance ◽  
Physical Vapor Deposition Technique

In this article, the design and performance of the CdSe which are deposited onto thin films of Yb metal is reported and discussed. The thin films of CdSe which are deposited by the physical vapor deposition technique are observed to exhibit slightly deformed hexagonal polycrystalline nature with excess amount of Cd as confirmed by the X-ray, energy dispersive X-ray spectroscopy and scanning electron microscopy techniques. The n-type CdSe is also found to form a Schottky barrier of tunneling type when sandwiched between Yb and carbon. The quantum mechanical tunneling mechanism in this device which was tested and modeled in the frequency domain of 10–150 MHz is found to exhibit average intersite separations of ∼5 nm. The tunneling device exhibited a widening in the depletion region associated with significantly large capacitance tunability in the studied frequency domain. On the other hand, as an optoelectronic device, the Yb/n-CdSe/C Schottky diode exhibited a responsivity of ∼0.10 A/W, photosensitivity of 6.5 × 104 and external quantum efficiency of 54% when biased with 1.0 V and exposed to laser light of wavelength of 406 nm.

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