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Identifiability of linear systems in physical coordinates
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Su, Tzu-Jeng Juang, Jer-Nan |
| Copyright Year | 1992 |
| Description | Identifiability of linear, time-invariant systems in physical coordinates is discussed. It is shown that identification of the system matrix in physical coordinates can be accomplished by determining a transformation matrix that relates the physical locations of actuators and sensors to the test-data-derived input and output matrices. For systems with symmetric matrices, the solution of a constrained optimization problem is used to characterize all the possible solutions of the transformation matrix. Conditions for the existence of a unique transformation matrix are established easily from the explicit form of the solutions. For systems with limited inputs and outputs, the question about which part of the system can be uniquely identified is also answered. A simple mass-spring system is used to verify the conclusions of this study. |
| File Size | 553277 |
| Page Count | 16 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19930003937 |
| Archival Resource Key | ark:/13960/t9c58hs0z |
| Language | English |
| Publisher Date | 1992-10-01 |
| Access Restriction | Open |
| Subject Keyword | Structural Mechanics Linear Systems Actuators Position Location Coordinates Parameter Identification Matrices Mathematics Transformations Mathematics Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
