| 1. |
- Braun, M.W., et al.
(författare)
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Multi-Level Pseudo-Random Signal Design and 'Model-on-Demand' Estimation Applied to Nonlinear Identification of a RTP Wafer Reactor
- 1999
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Ingår i: Preceedings of the 1999 American Control Conference. - Linköping : Linköping University Electronic Press. - 0780349903 ; , s. 1573-1579 vol.3
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Rapport (övrigt vetenskapligt/konstnärligt)abstract
- Guidelines are presented for specifying the design parameters of multi-level pseudo-random sequences in a manner useful for “plant-friendly” nonlinear system identification. These multi-level signals are introduced into a rapid thermal processing wafer reactor simulation and compared against a well-designed pseudo-random binary sequence (PRBS). The resulting data serves as a database for a “model on demand” (MoD) predictor. MoD estimation is attractive because it requires less engineering effort to model a nonlinear plant, compared to global nonlinear models such as neural networks. The improved fit of multi-level signals over the PRBS signal, as well as the usefulness of the MoD estimator, is demonstrated on validation data.
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| 2. |
- Fischer, Britta, et al.
(författare)
-
L2 time delay estimation by means of Laguerre functions
- 1999
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Ingår i: Proceedings of the 1999 American Control Conference. - Piscataway, NJ : IEEE Communications Society. - 0780349903 ; , s. 455-459
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Konferensbidrag (refereegranskat)abstract
- A straightforward method for the estimation of continuous time delays in narrowband signals is proposed. Delay estimation is especially of interest for those areas in signal processing that deal with the time delay of arrival (TDOA). The new method involves a parameterization of the identification problem in the Laguerre functions. This formalism is chosen due to the nature of the signals. Then the delay is obtained from a finite number of input/output Laguerre coefficients by using l2 norm optimal estimation. Estimation bounds are given and experiments from ultrasonic applications are presented
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| 3. |
- Glad, Torkel, et al.
(författare)
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Verification of Piecewise Linear Switched Systems using Abstractions
- 1999
-
Ingår i: Proceedings of the 1999 American Control Conference. - Linköping : Linköping University Electronic Press. - 0780349903 ; , s. 2967-2968 vol.4
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Konferensbidrag (refereegranskat)abstract
- A modeling framework for the class of piecewise linear switched systems is presented. Methods for abstraction using conservative discrete approximations are introduced and model checking is used for verifying specifications. A fairly complex example is treated, the main result being that abstraction is a promising tool for fully automated verification.
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