Answered
PID tunning at simulink block
There are no "best" coefficients. When you design a controller, you typically have design requirements, and you tune the control...

10 years ago | 0

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Answered
Speed Feedback with Discrete PID and PWM
please see if this <http://www.mathworks.com/discovery/pulse-width-modulation.html pwm> page (including the video) will help.

10 years ago | 0

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Tuning Cascading PID DC Motor Position & Velocity Controllers
Yes, your approach with cascaded setup is a way to go. See <http://www.mathworks.com/help/robust/examples/control-of-a-linear-e...

10 years ago | 0

Answered
How can I tune PID controller using Fuzzy logic .......????
refer to this <http://www.mathworks.com/help/fuzzy/examples/using-lookup-table-in-simulink-to-implement-fuzzy-pid-controller.htm...

10 years ago | 0

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cascade PI, whith simulation betwen simulink and Psim!
Yes, most likely the root cause is cosimulation with another tool. PID Tuner linearizes the model and uses the resulting linear ...

10 years ago | 0

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Does the lqed2 builtin function exist in Matlab 2013b?
No such function exists in Control System Toolbox in R2013b.

10 years ago | 0

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familiar with system identification toolbox?
a little bit familiar:) System Identification Toolbox lets you identify transfer functions and other models from input-output...

10 years ago | 0

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Answered
how is the aerospace toolbox accessed?
By using any of the toolbox <http://www.mathworks.com/help/aerotbx/functionlist.html functions> . You can also start by followin...

10 years ago | 0

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Answered
How can I linearize a zero-gain loop?
The picture is not attached. Please take a look at <http://www.mathworks.com/help/slcontrol/examples/design-a-pid-controller-...

10 years ago | 0

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How to get Transfer function from sim power system model?
In general, you can use Linear Analysis Tool to linearize Simulink models, learn more by visiting our page on <http://www.mathwo...

10 years ago | 0

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Answered
How to click tune button in PID block through script
Just answered a similar question, please look at the bottom of <http://www.mathworks.com/matlabcentral/answers/141921-error-line...

10 years ago | 0

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Answered
Error linearizing Simulink model with an m-file
There are several different issues here. 1. Your code is setup as a function, but there are no input arguments, thus I really...

10 years ago | 0

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Error linearizing Simulink model with an m-file
In general, if you have C in your MATLAB workspace, Simulink model should have no problems finding it. Can you see variable C i...

10 years ago | 0

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Problems about Automatic PID tuner
The function is <http://www.mathworks.com/help/control/ref/pidtune.html pidtune> . Please go to the bottom of the doc page for e...

10 years ago | 0

Answered
Any simillar function/methode in Matlab2011a for TFEST function in system identidication toolbox?
You can use process model, as explained <http://www.mathworks.com/help/releases/R2011a/toolbox/ident/ref/idproc.html here> .

10 years ago | 0

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How can you turn on 'All Stability Margins' when using the 'bode' function via script?
You can use function margin: sys=tf(1,[1 1 0]); margin(sys)

10 years ago | 2

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Can I include a variable saturation limit in a PID controller with anti-windup?
No, you will have to create this yourself from basic blocks. You can turn the anti-windup and output saturation on in the PID Co...

10 years ago | 1

Answered
I Have problems with the function ss2tf, matlab say me: Undefined function 'max' for input arguments of type 'sym'.
The first problem with your code is that A,B,C,and D matrices are symbolic, but you re trying to use ss2tf function that works o...

10 years ago | 0

Answered
What is the best free tool available to do tuning procedure to the PID controller system below
If you already have Simulink, then you can tune the gains by hand or download something free from the file exchange. MathWorks o...

10 years ago | 0

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Answered
how to get PID output?
Your code, as written does not make much sense. You define controller C, but then do not use it, and instead just use unity gain...

10 years ago | 2

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PWM Transfer function for an Inverter control system
You can model the actual PWM, look for more details on our <http://www.mathworks.com/discovery/pulse-width-modulation.html PWM p...

10 years ago | 0

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configure closed-loop control system
It appears R1, R2, and R3 are the vales you want to control. So these or a subset of these should be controlled by a controller....

10 years ago | 0

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Answered
Is it possible to design a controller in simulink using experimental data only?
The model as provided does not quite make sense, as it uses positive feedback. Here is what I did to get some sort of control...

10 years ago | 1

Answered
PID gains from a Transfer Function of a mass-spring-damper system
Well, your system has 1 input (force) and 2 outputs (x1,x2), so it is a single input - multi output system. The tutorial you tri...

10 years ago | 0

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Is it possible to design a controller in simulink using experimental data only?
Yes, you can follow the workflow explained <http://blogs.mathworks.com/seth/2014/05/30/plant-identification-using-the-pid-tuner/...

10 years ago | 0

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Answered
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...

10 years ago | 5

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Answered
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...

10 years ago | 1

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Answered
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 ...

10 years ago | 0

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Answered
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...

10 years ago | 0

Answered
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...

10 years ago | 0