Answered
How to transfer from simulink block diagram to transfer function?
if you have a nonlinear Simulink mode, you can linearize it and gt a resulting transfer function using linerize command or using...

12 years ago | 0

Answered
How to generate a Bode plot using two sample time signals ?
Do you have the data in time domain (steer angle and yaw rate as functions of time)? If you do, you can create time-domain idda...

12 years ago | 1

Answered
How to plot bode plot from FFT data
You need to create an <http://www.mathworks.com/help/control/ref/frd.html frd object>. here is example code from doc page. ...

12 years ago | 1

Answered
Bode diagram of a quarter model
You need to figure out what the inputs and outputs are and express the system as a transfer function or a state space system. On...

12 years ago | 0

Answered
self tunable PID controller
Hi, Unfortunately there is no "off the shelf" solution for this scenario. There are a couple of options: 1. If dynamics is ...

12 years ago | 0

Answered
How can i pause an engaged PID controller while i am running a simulation? How can i start and reset a subsystem at a given time?
Should be pretty straightforward to do. You basically want the PID controller in one control path and the constant zero in the p...

12 years ago | 0

Answered
linerization fails in presence of relay block
When you launch PID Tuner, it tries to linearize your Simulink model. If you have strong discontinuities like relay exact lineri...

12 years ago | 0

Answered
MATLAB code for 1. design of PID controllers for conceptional system 2.inverted pendulum 3. modelling transfer function and state space
Please take a look at the examples and videos on Control System Toolbox page. That should provide the information you are lookin...

12 years ago | 0

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Answered
Discrete PID Controller / Sampling times must agree
Can you please provide youur model. Hard to say what is happening without seeing the actual model.

12 years ago | 0

Answered
I am designing a closed loop pi control booster converter. when I want to automatically tune my discrete pi controller its show below message:
Yes, this often happens with SimPowerSystems models that have strong discontinuities that cannot be linearized using exact linea...

12 years ago | 0

Answered
Tuning of pid controller
Not sure what you mean by "analytic linearisation is not enabled". Is the error saying that exact linearization produces zer...

12 years ago | 0

Answered
Where can I find documents for C source files in Fuzzy toolbox?
The correct link is <http://www.mathworks.com/help/releases/R2013b/fuzzy/simulation-and-deployment.html here>

12 years ago | 0

Answered
linearizing a power system containing a powergui block
powergui block does not contain or introduce any states into the linear model you obtain when you linearize your model. You c...

12 years ago | 0

Answered
how to solve the error regarding constraint relax in linear analysis tool
It is hard to say what is happening without knowing what exactly you are doing. How are you specifying trimming conditions -i.e....

12 years ago | 0

Answered
simulink pid tuning error
You can also create a help request to get better assistance.

12 years ago | 0

Answered
How do i extract the state space with simulink control design?
When you linearize a Simulink model with Simulink Control Design you get a linear system linsys, which is an LTI object, as expl...

12 years ago | 0

Answered
Linearization for analyzing closed loop eigenvalues with SimPowerSystems
Simulink Control Design lets you linearize and analyze systems with arbitrary number of inputs and outputs. You are not limited ...

12 years ago | 0

Answered
how to solver this error? "Undefined variable "slctrlguis" or class "slctrlguis.pidtuner.getInstance".
please submit a <http://www.mathworks.com/support/service_requests/contact_support.do help request>.

12 years ago | 0

Answered
How to implement a hybrid model in MPC toolbox?
Hi, Model Predictive Control Toolbox does not currently support hybrid systems, but there are other MATLAB-based tools that ...

12 years ago | 0

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Answered
How do we implement MPC on a practical three tank system?
Your question is not very clear. The best course of action would be to get in touch with your MathWorks account rep so that we c...

12 years ago | 0

Answered
Why are neccesary the nominal conditions to build the MPC using the command line example in Matlab???
From the examination of the error message it appears the error has nothing to do with "nominal conditions" you mention, and inst...

12 years ago | 0

Answered
how to measure mpc performance?
Can you clarify what you mean when you say "performance". You can't really do anything in frequency domain. In time domain you c...

12 years ago | 0

Answered
Getting simulation data from MPC toolbox GUI
Hello. Currently this is not supported by the tool. I created enhancement request to capture your suggestion. Thanks.

12 years ago | 0

Answered
What can I do with the error: The "totaldelay" command cannot be used for models with internal delays.?
Can you explain what you are doing exactly that is producing this error message? Internal delays are described <http://www.math...

12 years ago | 0

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Answered
??? parameter must be a handle array
Hard to say what is happening without access to your code and model. Did you do op = operspec('CSTR_INOUT'); for your m...

12 years ago | 0

Answered
model predictive control toolbox for non-proper system
Here is the text from the <http://www.mathworks.com/help/mpc/gs/linear-time-invariant-lti-models.html doc>: The Model Predict...

12 years ago | 2

Answered
One to one mapping between bode plot and transfer function
Leaving aside the theoretical part of the question, you can use command <http://www.mathworks.com/help/ident/ref/tfest.html tfes...

12 years ago | 0

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Answered
how to find minimum damping ratio of a stable second order system in matlab rootlocus plot using function "polar"
Your question does not provide enough information to be answered. Can you post your MATLAB code here and explain better what you...

12 years ago | 0

Answered
Scaling of state-space models using prescale
Realizing the question was asked a long time ago, but providing answer for the record nonetheless. The prescale command and G...

12 years ago | 0

Answered
How to find out which sates were used for linmod of a SimMechanics model?
Hi, As you mention, _linmod_ does not support his functionality. _linmod_ is a legacy Simulink function that is no longer act...

12 years ago | 0