Jelicic, Goran and Böswald, Marc and Brandt, Anders (2020) Improved computation in terms of accuracy and speed of LTI system response with arbitrary input. Mechanical Systems and Signal Processing (MSSP). Elsevier. doi: 10.1016/j.ymssp.2020.107252. ISSN 0888-3270.
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Official URL: https://www.sciencedirect.com/science/article/abs/pii/S0888327020306385?via%3Dihub
Abstract
Spectral analysis and system identification techniques require suitably long data sets. Linear time-invariant (LTI) systems under random input can be demanding in terms of accurate simulation of all dynamics because of calculation time. This paper details an extension of the state-space formulation of LTI systems for higher order holds, for periodic and for exponential inputs. Exact solutions of the differential state equation are implemented into loops computing only matrix-vector multiplications. The algorithmic complexity is compared to other ordinary differential equations solvers. The presented methods can be applied to arbitrary inputs. In particular, it is shown that long system responses under random input can be computed efficiently and accurately in the time and frequency domains.
Item URL in elib: | https://elib.dlr.de/139811/ | ||||||||||||
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Document Type: | Article | ||||||||||||
Title: | Improved computation in terms of accuracy and speed of LTI system response with arbitrary input | ||||||||||||
Authors: |
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Date: | 28 August 2020 | ||||||||||||
Journal or Publication Title: | Mechanical Systems and Signal Processing (MSSP) | ||||||||||||
Refereed publication: | Yes | ||||||||||||
Open Access: | No | ||||||||||||
Gold Open Access: | No | ||||||||||||
In SCOPUS: | Yes | ||||||||||||
In ISI Web of Science: | Yes | ||||||||||||
DOI : | 10.1016/j.ymssp.2020.107252 | ||||||||||||
Publisher: | Elsevier | ||||||||||||
ISSN: | 0888-3270 | ||||||||||||
Status: | Published | ||||||||||||
Keywords: | LTI systems, fast simulation, higher order hold, random input | ||||||||||||
HGF - Research field: | Aeronautics, Space and Transport | ||||||||||||
HGF - Program: | Aeronautics | ||||||||||||
HGF - Program Themes: | fixed-wing aircraft | ||||||||||||
DLR - Research area: | Aeronautics | ||||||||||||
DLR - Program: | L AR - Aircraft Research | ||||||||||||
DLR - Research theme (Project): | L - Simulation and Validation (old) | ||||||||||||
Location: | Göttingen | ||||||||||||
Institutes and Institutions: | Institute of Aeroelasticity > Structural Dynamics and System Identification | ||||||||||||
Deposited By: | Jelicic, Goran | ||||||||||||
Deposited On: | 21 Dec 2020 15:25 | ||||||||||||
Last Modified: | 21 Dec 2020 15:25 |
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