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Romain Liechti


Last seen: 2 jours il y a |  Actif depuis 2019

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Converting high order transfer functions model to discrete
I'm trying to convert a continuous model of order 14 with Matlab, but the function c2d is not giving correct results. My model c...

plus de 4 ans il y a | 1 réponse | 0

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réponse

Question


Cell array for legend in a plot loop
I've built a function to plot a structure of idfrd, that use the fieldnames of the structure as legend for the curves. Everythin...

presque 5 ans il y a | 1 réponse | 0

1

réponse

Question


Non coherent results when multiplying discrete biquad filters
I'm struggling with biquad filters multiplication. I have filter that is composed of 7 simple filters (Shelves, peak, low pass, ...

presque 5 ans il y a | 1 réponse | 0

0

réponse

Question


Operation on structure fields with common part of the field name
Hi, I have succesfully imported several mat files into a structure with fields names beginning either by "DUT" or "REF". Now I n...

presque 5 ans il y a | 1 réponse | 0

1

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Question


How to fit a set of serie biquadratic filters to a transfer function
I need to fit a transfer function model to a set of 7 series filter of know form. These filters are of the classic form : LowPas...

environ 5 ans il y a | 1 réponse | 0

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Question


Phase shift between data and identified model using tfest
Hi, I'm struggling with the tfest function for model estimation. I'm usinf tfest to get a precise model from frequency data. Whe...

environ 5 ans il y a | 1 réponse | 0

1

réponse

Question


Adjust the phase offset when using data from 'bode'
I'm trying to look at the phase and gain margin of an openloop system. Due to presentation/publications, I had to designa functi...

environ 5 ans il y a | 2 réponses | 0

2

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Question


Using String user input for dynamic number of legend in plot function
Hi, I'm trying to use the user input from input as a legend for graph in a plot function. I would like my function to use the st...

environ 5 ans il y a | 1 réponse | 0

1

réponse

Question


Transfer Function Identification giving negative static value
I'm trying to fit a complex system with the identification toolbox of matlab. The fit is great for the frequency and phase if I ...

environ 5 ans il y a | 1 réponse | 0

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réponse

Question


Comparing the IR computed with ifft and with impulse
I'm trying to compare the impulse response calculated by the function "impulse" in matlab with a model computed from frequency a...

environ 5 ans il y a | 1 réponse | 0

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réponse

Question


Instability of identified model in time domain with the step function
I'm trying to fit the frequency response of a system, with a high order model. I need good precision in a wide frequency range. ...

environ 5 ans il y a | 1 réponse | 1

1

réponse