Abstract
In this paper, the classic Levy identification method is reviewed and reformulated using a complex representation. This new formulation is able to solve the well known bias of the classic method at low frequencies. The formulation is generic, addressing both integer order and fractional order transfer functions. A new algorithm based on a stacked matrix and its pseudo-inverse is proposed to accommodate the data over a wide range of frequencies. Several simulation results are presented, together with a real system identification. This system is the Archimedes Wave Swing, a prototype of a device to convert the energy of sea waves into electricity.
| Original language | English |
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| Title of host publication | 2007 Proceedings of the ASME International Design Engineering Technical Conferences and Computers and Information in Engineering Conference, DETC2007 |
| Pages | 1405-1414 |
| Number of pages | 10 |
| Volume | 5 PART B |
| DOIs | |
| Publication status | Published - 2008 |
| Event | 6th International Conference on Multibody Systems, Nonlinear Dynamics and Control, presented at - 2007 ASME International Design Engineering Technical Conferences and Computers and Information in Engineering Conference, IDETC/CIE2007 - Las Vegas, NV, United States Duration: 4 Sept 2007 → 7 Sept 2007 |
Conference
| Conference | 6th International Conference on Multibody Systems, Nonlinear Dynamics and Control, presented at - 2007 ASME International Design Engineering Technical Conferences and Computers and Information in Engineering Conference, IDETC/CIE2007 |
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| Country/Territory | United States |
| City | Las Vegas, NV |
| Period | 4/09/07 → 7/09/07 |
Keywords
- (min ,max ,+) functions
- Archimedes wave swing (AWS)
- Fractional orders
- identification methods
- Integer order
- Pseudo inverses
- Real systems
- Low frequency (LF)
- Multi-body system (MBS)
- New algorithm
- Non-linear dynamics