The system-identification tag has no wiki summary.
3
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1answer
49 views
What are some suitable methods for removing low-frequency line noise from measured data prior to system identification/deconvolution?
I am performing a system identification by striking an experimental model with an instrumented impact hammer and measuring the strain response.
The timebase for the recorded signals is 5 microseconds ...
1
vote
1answer
31 views
Comparing multiple armax models
I would like to create an algorithm that, given an iddata, estimates different armax models with different na, nb, nc, nk, and finally it show the compare plot.
I know how to use the armax ...
0
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1answer
50 views
Help in modelling medical data
I am practically new in statistical modelling so kindly bear with my questions.I have a data set of 3 dimensions that is there are three columns and 50 rows (50 observations).Each column represents ...
4
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2answers
132 views
How can filter data to remove noise in matlab?
I have 2 arrays of 800000 input and output data samples. The system is a kind of oven that works among 0 and 10 volts. The sample time is 0.001s.
I have to identify the model of this system, but ...
0
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0answers
24 views
Help in Identifying a model
I have some issues in the model representation
If the equation is in the form of $y(t) = x(t)+ ay(t-1)+by(t-2)$ then is this representing a Moving Average or ARMA model or ARMA with exogeneous ...
0
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0answers
32 views
Issue in system identificaton and Yule Walkers Equation
I have a set of observation, a vector consisting of 500 positive real values. I am having a tough time in figuring out what should be the model, i.e a general equation representing the data values. I ...
1
vote
1answer
118 views
Nonlinear curve fitting
I have googled and read a lot from Matlab documents but helpless in solving the following problems concerning nonlinear regression.I have a single observation vector consisting of 200 measurements y ...
3
votes
1answer
55 views
Is this input function time varying?
I'd like to understand when an input signal is time varying or time invariant.
Specifically, I have this function:
$y(n) = x(n) + 0.1 + (0.2)^n + x(n-3)$
I thought that this is time varying because ...
3
votes
1answer
58 views
How to perform model fitting for system identification
I am having a really hard time in understanding how to formulate a model say linear AR model to represent a communication channel or maybe any motion. I have the experimental data representing the ...
6
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0answers
68 views
Estimating the input to a system from a system state using EKF
[ Cross-posted from: http://math.stackexchange.com/questions/164169/estimating-the-input-to-a-system-from-a-system-state ]
I have a system for which I have obtained a non-linear time-varying ...
10
votes
1answer
125 views
Deconvolving the measurement system from the system response
I'm preforming a system identification measurement, and would like to deconvolve the measurement system's response from the measured response.
The set up of the system is as follows; the signal is ...
6
votes
3answers
210 views
choosing drive signals for system identification?
(I'm just learning a little about system identification so apologies in advance if this question is badly worded)
How do you go about choosing drive signals for system identification? I've seen PRBS ...
5
votes
1answer
100 views
State space system identification
Suppose I have a real (physical) dynamical system with some sensors and actuators, and I also have an idealized state-space model of this same system. How, in general, can I adjust the model to match ...
6
votes
1answer
318 views
System identification packages
I've been hunting around for an alternative to Matlab's System Identification Toolbox, but the commonality of the terms "system" and "identification" are confounding the search.
Are there any ...
