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PID Tune: Plant cannot be linearized. Why?
The plant is linearized, but the linearization at t=0 is a gain of zero. Most likely this happens due to initial conditions in t...

más de 11 años hace | 5

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Forward and feedback controllers in SISOtool.
Hi Mathias, Unfortunately there is no way to do this now with SISO Tool. The only option is to tune C first using configurati...

más de 11 años hace | 1

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LQR design: state space feedback
If I understand correctly, you are trying to simulate your LQR controller in Simulink. LQR controller uses full state vector x ...

casi 12 años hace | 0

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How does tfest estimate the transfer function of a system given input and output in time domain?
Please take a look at the <http://www.mathworks.com/help/ident/ref/tfest.html reference page> and scroll to the very bottom: "Mo...

casi 12 años hace | 0

Respondida
Frequency Domain Identification with multiple input amplitudes for SISO system?
Frequency-domain data can only be used for estimating linear time-invariant (LTI) models in System Identification Toolbox - mode...

casi 12 años hace | 0

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Transfer Function of a simple Circuit using Simulink
You did not specify which transfer function you want. Let's assume you want a transfer function from input voltage to output vol...

casi 12 años hace | 19

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i want to obtain the transfer function of the controller
If you know the transfer function, define it like this in MATLAB: s=tf('s'); sys=(1*s^2+2*s+3)/(4*s^4+5*s^2+6*s+7) ...

casi 12 años hace | 0

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Using "kalman" with a Zero B matrix
Yes, you can use _kalman_ to design a Kalman filter for a system with no input _u_ . Did you try it? Did you run into problems?

casi 12 años hace | 0

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I have a question regarding control theory, How are state space equations linked with state flow?? Can stateflow have memory??
Two separate questions here. State-space equations do not have much to do with Stateflow, except for the word "state". St...

casi 12 años hace | 0

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Bode diagram at different amplitudes?
The best option in this case is probably <http://www.mathworks.com/videos/frequency-response-estimation-68884.html frequency res...

casi 12 años hace | 0

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How can I compute the controller effort and perform robust analysis in Simulink?
It is not 100% clear what exactly you need - time history of controller response, or a transfer function of controller response?...

casi 12 años hace | 1

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Respondida
Get empty results from hinfsyn
This seems strange. Hard to diagnose without having access to your data. Can you share it? You can also contact <https://mathwor...

casi 12 años hace | 0

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what algorithms are applied in the auto tuning of PID block in simulink?
Proprietary algorithm developed by MathWorks. From the "Algorithms" section <http://www.mathworks.com/help/control/ref/pidtun...

casi 12 años hace | 0

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Respondida
Identification toolbox - Parameter identification of a given state space structure
1. You can enable feedthrough and disturbance estimation for n4sid by setting name-value pair function arguments properly, as de...

casi 12 años hace | 0

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How should data be prepared for system identification?
Please take a look at <http://www.mathworks.com/help/ident/gs/about-system-identification.html#bsguh6g-1 this section> of the do...

casi 12 años hace | 1

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How to know the transfer function and plot the poles of coupled high order differential equations?
Transfer functions are representations of linear time-invariant systems. Your system is not linear. You can implement your syste...

casi 12 años hace | 0

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what is the tranfer function of this model?
You need to be more specific. What transfer function do you want - the plant transfer function: <</matlabcentral/answers/up...

casi 12 años hace | 0

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"feedback" amd "append" comands
Read the section of the example preceding this code immediately. You will see that what the example does is apply feedback contr...

casi 12 años hace | 0

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how to develop simulink model using this code
Take a look at a few "getting started" videos for Simulink - you can find them <http://www.mathworks.com/products/simulink/video...

casi 12 años hace | 0

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How to calculate parameters suspension system?
You can build parameterized model in Simulink, and then use Simulink Design Optimization to automatically adjust all parameter v...

casi 12 años hace | 0

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how to convert .fis(fuzzy) file to.c/cpp file?
1. use <http://www.mathworks.com/help/fuzzy/fuzzylogiccontroller.html Fuzzy Logic Controller block> 2. specify your FIS syste...

casi 12 años hace | 0

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From bode to transfer function
You need to set tfestoptions Focus property to "prediction" to allow for unstable systems (your system has two unstable poles). ...

casi 12 años hace | 1

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I must change something in the model to select the variables in Response Optimization?
The tool should display all the variables that are used by the blocks of your model. The variables can be defined in base worksp...

casi 12 años hace | 0

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Arduino Support from Simulink only for students?
Target hardware support (including Arduino) is included with all versions of Simulink.

casi 12 años hace | 0

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Evaluation of Fuzzy Inference system with GUI
If you want to evaluate your FIS on a matrix of data, use <http://www.mathworks.com/help/fuzzy/evalfis.html evalfis> function. F...

casi 12 años hace | 0

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How to build a discrete model of my continous model. The command c2d does not work properly.
Transfer function representation of an LTI system is not the best representation for doing calculations. For more on that please...

casi 12 años hace | 2

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PI controller for boost converter design
Update as of April 2014: his has now been addressed in R2014a, please take a look at this <http://www.mathworks.com/videos/pid-c...

casi 12 años hace | 0

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Descriptor State space in Simulink
You can implement descriptor state space systems in Simulink using <http://www.mathworks.com/help/control/ug/simulink-block-for-...

casi 12 años hace | 0

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How can I tune PR (proportional Resonant) controllers in Sisotools?
Unfortunately, you cannot tune this type of compensator in SISO Tool and preserve the compensator structure. There are oth...

casi 12 años hace | 1

Respondida
How can i get the transfer function for an Hinfinity contrller using State space matrices?
see <http://www.mathworks.com/help/robust/ref/loopsyn.html loopsyn>

casi 12 años hace | 0