Answered
how do I control duty cycle of a MOSFET using PI controller
So the output of the PID controller should output a duty cycle between 0 and 1. Then, this duty cycle can be passed into, for...

8 years ago | 0

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Answered
Change simulink port location of signal after dragging block into "Create Subsystem"
It's the same block; you just have to rotate it and resize it to make it look like a "fresh" block. You can right-click the b...

8 years ago | 0

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Answered
Fixing parameters when estimation of transfer function
There is a |setpar| function that lets you set whether or not the variables are free. For example, to have only the first 3 p...

8 years ago | 0

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Parallelisation for ga with Simulink Model
This is happening because each worker needs to have the model loaded in memory, as well as all its dependencies added to path (a...

8 years ago | 1

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Answered
If there is one Rate Transition Block following another Rate Transition Block, why is the first Block automatically set to "Copy" mode?
*Questions the sense of 2 consecutive Rate Transition blocks ...* If you look at the Rate Transition block documentation it s...

8 years ago | 0

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I'm having trouble modeling with Simscape Multibody
This algebraic loop is happening because your Simscape Multibody interface is being done using Simulink signals. Since you're ap...

8 years ago | 1

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Answered
Simulink/ROS: Publishing JointTrajectory Messages
I can only guess what's going on... Are you planning on sticking to desktop simulations from MATLAB or will you be generatin...

8 years ago | 3

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Answered
Simulink mask using workspace variables
The mask has a separate workspace, so what you need to do is get the values from the base workspace before using them. There ...

8 years ago | 5

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Answered
How to propel a multibody vehicle by a DC motor?
You can use the <https://www.mathworks.com/matlabcentral/fileexchange/37636-simscape-multibody-multiphysics-library Simscape Mul...

8 years ago | 0

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Can I override the behaviour of the console output that is printed when I access the member of a class member (without semicolon)?
Absolutely -- you can overload the |disp| method of that class as shown <https://www.mathworks.com/help/matlab/matlab_oop/displa...

8 years ago | 0

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Simulate autonomous robot with distance sensors
Actually, MATLAB does not yet have an official built-in robotics simulator. However, there is a lot out there you can use as a s...

8 years ago | 0

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How could I connect simulink model to the genetic algorithm toolbox ?
It's all in your cost function. For example: function cost = costFunction(params) myValue1 = params(1); myV...

8 years ago | 1

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Designing a DC-DC converter using Simscape
There are a lot of examples in the Simscape (and add-on products) documentation. If you want to do a more idealized system-le...

8 years ago | 0

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Is "fixed-displacement pump" in Simscape still available in R2017 version?
Hi Adam, I just tried finding the blocks and the engine cooling example in R2017a and it works fine for me. Indeed, if I s...

8 years ago | 0

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Answered
Controlled resistor in simpowersystem?
The block you dragged in is from a different library which doesn't connect directly to Simscape Power Systems Specialized Techno...

8 years ago | 0

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nonlinear plant model in matlab
You can use ordinary differential equation (ODE) solvers in MATLAB by specifying the relationship between |ydot| and |y|. Se...

8 years ago | 0

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How to generate random stable state space?
Yes, you can! >> A = rss(100) <https://www.mathworks.com/help/control/ref/rss.html> - Sebastian

8 years ago | 0

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Why doesn't the scope in simulink show the full stepresponse?
The default simulation stop time of a Simulink model is 10 seconds (you should see a "10" in the toolbar near the top of the mod...

8 years ago | 1

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Answered
I would like to change gain every step / to be a function of time for my TF, is this possible somehow?
Instead of a Gain block, use a Product block... then, pass in the "gain", which is now one of the 2 inputs of the Product block,...

8 years ago | 0

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Answered
How to i find the integral/derivative of a transfer function ?
Are you using Control System Toolbox? Recall that the transfer function for a derivative is |s| and for an integrator is |1/s|. ...

8 years ago | 1

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Answered
Ho to convert a signal from discrete to continuous in Simulink block diagram?
Even better! In Simulink, you don't need to convert your plant model to a discrete system. If your controller block(s) are di...

8 years ago | 1

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How can I set input value and output value of a StartFcn?
Did you try it? Because it works fine for me. Pretty sure the value of a model's |StartFcn| parameter is just a free-form str...

8 years ago | 0

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how to applySVM classifier on dataset in xls form
You can import the data into MATLAB either graphically using the <https://www.mathworks.com/help/matlab/import_export/select-spr...

8 years ago | 0

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Flow chart in simulink
If you want iterations in your flow chart, as in a FOR-loop, you can create one using the pattern wizard. See below: <https:/...

8 years ago | 0

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How to save custom Simscape blocks?
Assuming your code is correct, all you have to do is change the extension of |varconvection.m| to |varconvection.ssc|. Simsca...

8 years ago | 0

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Answered
Code to check stabilty with routh method
There are tons of submissions for this on File Exchange, such as this one: <https://www.mathworks.com/matlabcentral/fileexcha...

8 years ago | 0

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OOP: Object gone out of scope!
This is expected. |x| is a local variable to the constructor, so it will go out of scope after instantiating the object. You ...

8 years ago | 0

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Answered
Is there a fault in the equation of the piston mechanism? (Simscape, Piston, Piston Engine)
At a glance, you seem to be correct. I looked at the underlying code in the block and it seems the equations are implemented cor...

8 years ago | 1

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Answered
Use mldivide in SIMULINK
Since you're using a square A matrix, you should be able to use the Divide block (Simulink > Math Operations). If you set its "M...

8 years ago | 3

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Answered
Why does matlab skip my if statement
This is a common issue when working with floating-point numbers, and I would first refer you to this answer: <https://www.mathwo...

8 years ago | 0