Answered
Linearizing a non-linear ARX model for making a PID controller ?
Please take a look at <http://www.mathworks.com/videos/data-driven-control-controller-design-and-implementation-70899.html this ...

9 years ago | 0

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Answered
How can I use "Multi-Loop Control Systems" for a mutli-PID Control
You are probably better of using Control System Tuner. Please take a look at this <http://www.mathworks.com/videos/control-syste...

9 years ago | 0

Answered
How to control the cart position in inverted pendulum using PID controller?
To control both the position and the angle, you would need to set up a little bit more involved controller architecture. Take a...

9 years ago | 0

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State Space model using ident
What did you try to do already? Can you post your code, or snapshots of what you did in the app? If you want to get help you nee...

9 years ago | 0

Answered
System Identification toolbox, can't import frequency domain data above frequency of pi rad/s
You are forgetting to set the sample time somewhere in your code or in the app. The tool will show the data up to the Nyquist fr...

9 years ago | 0

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Answered
how can i let more than 9 membership functions in the Membership Function Editor (in FIS) with Matlab?
Add the 9 membership functions, then click on "Add Membership Function" again, change the number to 5, and click "add". You will...

9 years ago | 0

Answered
I Can't Find the fuzzyLogicDesigner?
From the screenshot you posted, it looks like you are using R2008a. In that version of MATLAB type >>fuzzy to launch the to...

9 years ago | 0

Answered
How can I use the Approximate MIGO step response formula in a MATLAB script?
Unfortunately, we do not provide command line equivalent of this functionality at the moment. I captured your suggestion as an ...

9 years ago | 0

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How to draw bode diagram with measured data?
There are a couple of options: you can use System Identification Toolbox, see <http://www.mathworks.com/help/ident/ug/identifyin...

9 years ago | 0

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Switching from Constant value to PID controller
Can you attach the model? Had to troubleshoot otherwise. One thing that could be happening is that PID Tuner works by linearizin...

9 years ago | 0

Answered
Setting predermined values on the PID parameters in "pidtool"
You cannot set your own gain values for the PID controller in the PID Tuner app. This tool is for automatically tuning PID contr...

9 years ago | 0

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How to use the correct process transfer function?
You can use the <http://www.mathworks.com/help/simulink/slref/transferfcn.html transfer function block> . In the block dialog yo...

9 years ago | 0

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Why my Matlab2014b doesn't find function bode or function tf?
You probably do not have Control System Toolbox installed. Do >>ver and see if it is in the list of toolboxes you have.

9 years ago | 0

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i am currently working with ky converter and i've got error in linearising the plant with the use of pid controller
see <http://www.mathworks.com/videos/pid-controller-tuning-for-a-model-with-discontinuities-89347.html this video> and <http://w...

9 years ago | 0

Answered
bumpless transfer for a family of PIDs
Use tracking mode as explained <http://www.mathworks.com/help/simulink/slref/pidcontroller.html#br58hlp-1 here> . There is a nic...

9 years ago | 0

Answered
Why does the Bode function behaves differently in a subplot?
This works: H = tf([1],[100]); figure(100) subplot(2,1,1); [mag,ph,wout]=bode(H); semilogx(wout,20*log10(squeez...

9 years ago | 1

Answered
Global Optimization Problem with Simulink
You can use <http://www.mathworks.com/products/sl-design-optimization/ Simulink Design Optimization> for that. Take a look at...

9 years ago | 0

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how to change parameters of PID tuner GUI from command line?
PID Tuner app (pidtool) was never intended to be used like you describe. If you want to process multiple plant models in a ba...

9 years ago | 0

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Answered
Is ir possible to use more than one reference signals when using looptune in MATLABR2012a?
Ok, with the script provided, the problem is obvious. The script is referring to signals u1, u2,u3, and y1,y2,y3 in the model, b...

9 years ago | 0

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Answered
Is ir possible to use more than one reference signals when using looptune in MATLABR2012a?
Most likely you need to specify signals of interest as I/O points, and then this problem would go away. I.e., before you refe...

9 years ago | 0

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what is the stopping conditin of the fuzzy clustering?
Take a look at the <http://www.mathworks.com/help/fuzzy/fcm.html doc> and read the last paragraph.

9 years ago | 0

Answered
converting multiple ss model to single ss model
If I understand correctly, you have 4 state-space systems, where each system has 1 input and 1 output. You want to create one s...

9 years ago | 1

Answered
PID with PWM for three phase inverter
Take a look at <http://www.mathworks.com/help/slcontrol/examples/design-a-pid-controller-using-simulated-i-o-data.html?prodcode=...

9 years ago | 0

Answered
How do I tune a PID controller gains using Fimsearch for a nonlinear dynamic system.
If the system is modeled in Simulink, you can use Simulink Design Optimization which lets you tune the gains using brute force o...

9 years ago | 0

Answered
i got best fit for specific information using system identification .now how to design a controller for the system i get
Question is not formulated clearly. When you estimate models of different orders, System Identification Toolbox produces a char...

9 years ago | 0

Answered
Quadcopter PID Controller Implementation - Derivative Filter
As you say yourself, calculating pure derivative of a noisy signal is not a good idea. Transfer function of a pure derivativ...

9 years ago | 0

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Step response settling time
If you look at the doc page for <http://www.mathworks.com/help/control/ref/stepinfo.html stepinfo> , you will see that settling ...

9 years ago | 0

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Answered
Constraining parameters with Sys ID Toolbox
You can specify the structure of a transfer function to estimate (the number of poles and zeros), and can specify that say all n...

9 years ago | 0

Answered
Linearising a electromechanical control system with Motor, Gear box with stiffness and PWM contoller
Please try to follow <http://www.mathworks.com/help/slcontrol/examples/design-a-pid-controller-using-simulated-i-o-data.html?pro...

9 years ago | 0

Answered
Transfer function error ' The values of the "num" and "den" properties must be row vectors or cell arrays of row vectors,'
Can you paste your MATLAB code that is not working? Is the issue related to you using pid function in 2009a release, like your o...

9 years ago | 0