Frequency Domain System Identification Toolbox 4.0
Novelties with respect to toolbox version 3.3
The main novelty of V4.0 is seamless processing of arbitrary data
(transients / random noise / nonharmonic sampling included) to prepare
accurate identification.
These new functionalities are demonstrated in examples available through
the Help menu (Examples: arbitrary signals).
Frequency Domain System Identification Toolbox 3.3
Novelties since toolbox version 3.2
The main novelty of V3.3 is that it can quantify the nonlinearities
of a given system. This includes
- the design of appropriate excitation signals
- data preprocessing with data analysis related to compound error
(noise, nonlinarities)
- data objects automatically storing such data
- identification with the related noise model
- verification of the model on the basis of this noise.
These new functionalities are demonstrated in examples available through the Help menu (Examples: how to identify).
Frequency Domain System Identification Toolbox 3.2
Novelties since toolbox version 3.0
The new version of the toolbox offers significant innovations. The use has been
seriously improved and simpified. Here are the highlights:
Version 3.2:
- Preprocessing of data without exact knowledge of the frequency content
- Improved object handling
- Improved excitation signal design
Version 3.1:
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Automatic execution in automatic mode. The user practically need not intervene.
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Automatic calculation of model orders in the s-domain.
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Graphical window to assist proper import of data (Command 'compose' in the Read windows).
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Possibility of the use of orthogonal polynomials both in s-domain and z-domain
(improved numerical stability: identification of high-order resonant systems.
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Model plots offer easy change of aspects through pull-down menus.
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Possibility of complex coefficients (Nuclear Magnetic Resonance applications, modeling of rotor bearing systems).
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Special variables: sqrt(s) for geophysical modelling and diffusion processes, tanh(s) for microwave applications
Examples for usage are given on a separate page.
Remark:
because of the use of the new functionalities, this version runs under the latest
MATLAB versions: 6.5 (R13), 6.1 (R12.1), 6.0 (R12), 5.3 (R11), and 5.2 (R10).
Frequency Domain System Identification Toolbox Extension
Novelties since toolbox version 2.0.3
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Graphical User Interface.
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Action Recorder to make GUI-based demos and tests.
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Smooth transfer of models to the Control System Toolbox via objects.
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Automatic model scan. This allows a completely automatic modeling procedure
so that even unfamiliar users can get reasonable models. This can be an
important advantage in thecompetition with any other modeling package.
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Incorporation of orthogonal polynomials into the identification scheme.
This allows the user to handle high-order resonant systems, like mechanical
systems in modal analysis. A user request since years.
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Dealing with transients in the measured signals. Up to now only periodic
signals were properly handled in the frequency domain.
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Simpler and more logical alternative command-line call forms. The earlier
forms still stem from Matlab 3.5, they are somewhat awkward and even frightening
for some users.
Examples for usage are given on a separate page.
Remark:
because of the use of the new functionalities, this version runs under
Matlab version 5.2 and higher.
