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My system consist of set of equations. How to implement PID controller for my system ?
In a simple case of a mass spring damper mx''+cx'+kx=F convert system equations to a transfer function m=1;c=1;k=1; %re...

8 years 前 | 0

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how to get bode plot and transfer function from my simulink block?
Can you attach the actual model? My guess is that you are running into problems here because your model includes three-phase ma...

8 years 前 | 0

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pidTuner feature "DesignFocus" not available
Yes, this functionality was introduced in 15a, you can read the release notes <https://www.mathworks.com/help/control/release-no...

8 years 前 | 1

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PID Tuning tools not supported for plant models of type 'tf'
Your code runs fine when I try it. Could it be you have some 3rd party toolbpx installed which also has pidtune function? Wha...

8 years 前 | 0

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open_system('scdspeedctrl') How can I get the state space equations for this system?
Big numbers don't mean there is a problem. There is nothing really wrong with what you are doing. To linearize the plant model y...

8 years 前 | 0

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how to design a MPC controller for a plant with discontinuities like a switching electric circuit in simulink?
If you already created a linear model when tuning a PID controller you can definitely reuse this model for designing an MPC cont...

8 years 前 | 0

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PID Linearization Error - Does not Linearize, says contains 1 Algebraic Loop
I am guessing you trying to tune a PID Controller using "tune" button and getting an error. PID Tuner works by approximating a n...

8 years 前 | 0

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sisotool loopshaping programmatic tuning from MATLAB command line
Control System Designer relies on commands from Robust Control Toolbox documented <http://www.mathworks.com/help/robust/loop-sha...

8 years 前 | 0

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PID tuner doesn't launch
This sounds like a possible case of corrupt installation. Can you please contact technical support, they will be able to help if...

8 years 前 | 0

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how to do curve fitting in bodeplot ?
You can use <http://www.mathworks.com/help/control/ug/reduce-model-order-using-model-reduction-app.html Model Reducer app> for t...

8 years 前 | 0

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bode diagram of a tansfert function in Simulink
Take a look at this video, <http://www.mathworks.com/videos/transfer-functions-in-simulink-part-2-extracting-transfer-functions-...

8 years 前 | 0

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negative P gain for PID
Why are you worried that your controller would not be physically realizable? Negative Kp does not mean controller is unstable.

8 years 前 | 1

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fuzzy logic vs PID simulink
Perhaps <http://www.mathworks.com/help/fuzzy/examples/using-lookup-table-in-simulink-to-implement-fuzzy-pid-controller.html this...

8 years 前 | 0

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Implementation of PID Pole Placement
So which one are you trying to do: tune a PID controller or design a controller using pole placement. Pole placement is done on ...

8 years 前 | 0

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Matlab seem to forget the Control Systems Toolbox after restart
It seems like a problem with the path, not sure why it is happening. You can try explicitly adding the folder where Control Sys...

8 years 前 | 0

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PID controller, transfer function
Something like this would do:(note that this requires Control System Toolbox). P=pid(1) PI=pid(1,1) PD=pid(1,0,1) ...

8 years 前 | 1

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Trying to stabilise a SISO feedback loop with a Cascade PID controller - but it's not working!
First off, looks like you have a typo in your Cq. As Pq already has integrating action, you don't really need an integrator in C...

8 years 前 | 0

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sir i have made simulink model based on fuzzy logic controller when i run model scope show the output plot (step response )but sir how can i get exact value of time responce parameter . i am able to find these parameter of pid based model
Use " <http://www.mathworks.com/help/simulink/slref/toworkspace.html To Workspace> " block to save the response to MATLAB worksp...

8 years 前 | 0

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In PID tuning using control system tuner why am i getting waveform like this? Why there is no S and T and why in speed response plot its showing zero in actual?
Control System Tuner works by linearizing a Simulink model and then trying to design a controller for the linearized model. You ...

8 years 前 | 0

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how to get the control signal from the pid controller?
sys=C/(1+C*TF); step(sys)

8 years 前 | 0

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I have DC motor I went apply PID Position Controller for 45 angle
http://ctms.engin.umich.edu/CTMS/index.php?example=MotorSpeed&section=SystemModeling

8 years 前 | 0

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Blocks not recognized when linearizing in Simulink
The blocks that are not highlighted are not on linearization path. All it means is that graphically the input linearization poin...

8 years 前 | 1

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MIMO ltiblock.pid
This is a bug in the documentation. ltiblock.pid is for representing SISO PIDs only. The bug will be fixed in the future release...

8 years 前 | 0

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whether matlab function block and trigger block can be linearized?
Hi, Triggered subsystems are discontinuous and would typically not linearize.For cases when exact linearization does not work, ...

8 years 前 | 1

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已回答
on which method pidtool command selects parameters of PID?
Please see <http://www.mathworks.com/matlabcentral/answers/64274-how-does-the-simulink-pid-autotuner-work here>

8 years 前 | 0

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Why the build-in step function and the user defined m-file generate different results
The difference is due to how the derivative term is handled in the simulation. When you use ode45 (the first approach in the que...

8 years 前 | 1

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design optimization Simulink model parameter estimation to fit measured curvedata
Please start by taking a look at <http://www.mathworks.com/videos/estimating-dc-motor-parameters-97057.html the video> and readi...

8 years 前 | 1

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Updates of Matlab toolboxes based on latest Academic Research findings (Sys Id Toolbox)
Hi, As pointed out in the previous answer, each release we publish information about new features added to each of our products...

8 years 前 | 0

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How to do stability analysis of a MIMO simulink model?
You can use Linear Analysis tool in Simulink Control Design to compute a transfer function of a model (linearize the model). Tak...

8 years 前 | 0

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How do I tune all the 4 PI controllers of a STATCOM?
You can try using <http://www.mathworks.com/help/robust/tuning-with-control-system-tuner-app.html Control System Tuner> which ca...

8 years 前 | 1

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