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High performance compensation using an adaptive strategy for real-time hybrid simulation
- Source :
- Mechanical Systems and Signal Processing. 133:106262
- Publication Year :
- 2019
- Publisher :
- Elsevier BV, 2019.
-
Abstract
- Real-time hybrid simulation (RTHS) is an innovative and versatile technique for evaluating the dynamic responses of structural and mechanical systems. This technique separates the emulated system into numerical and physical substructures, which are analyzed by computers and loaded in laboratories, respectively. Ensuring the boundary conditions between the two substructures through a transfer system plays a significant role in obtaining reliable and accurate testing results. However, measurement noise and the delay between commands and responses due to the dynamic performance of the transfer system are inevitable in RTHS. To address these issues and to achieve outstanding tracking performance and excellent robustness, this paper proposes an adaptive Kalman-based noise filter and an adaptive two-stage delay compensation method. In particular, in the novel noise filter strategy, adaptive inverse compensation with parameters updated by the least squares method is adopted to accommodate the amplitude and phase errors induced by a traditional Kalman filter. In the proposed delay compensation method, classic polynomial extrapolation and an adaptive inverse strategy are employed for coarse and fine compensation, respectively. Virtual RTHS on a benchmark problem reveals the satisfactory tracking performance and robustness of the proposed methods. Comparisons with polynomial extrapolation and single-stage adaptive compensation indicate the superiority of the proposed two-stage delay compensation method.
- Subjects :
- 0209 industrial biotechnology
Computer science
Mechanical Engineering
Noise reduction
Extrapolation
Aerospace Engineering
Inverse
02 engineering and technology
Kalman filter
01 natural sciences
Computer Science Applications
Mechanical system
Adaptive filter
020901 industrial engineering & automation
Control and Systems Engineering
Robustness (computer science)
Control theory
0103 physical sciences
Signal Processing
Boundary value problem
010301 acoustics
Civil and Structural Engineering
Subjects
Details
- ISSN :
- 08883270
- Volume :
- 133
- Database :
- OpenAIRE
- Journal :
- Mechanical Systems and Signal Processing
- Accession number :
- edsair.doi...........ca8e98fe49c9e7d37b11e9395d4745e0