Answered
Why doesn't my sample time change?
If you go to *Simulation > Model Configuration Parameters*, the "Solver" pane should have a sample time setting in there set to ...

8 years ago | 0

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Answered
Comment out block vs grounding signal
As far as I know, I don't think there is a difference. In both cases, any block optimizations at code generation will remove...

8 years ago | 0

Answered
Define State space in simulink for pendulum inverted
Two different things! The 4-state system you provided are the system equations for the inverted pendulum on a cart. In the mo...

8 years ago | 0

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Answered
modeling friction in translational mechanical system
You should think of Simscape mechanical blocks as operating on the relative position/velocity between the R and C ports. In t...

8 years ago | 1

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Answered
Rigidly connected port error with Simscape Multibody Contact Forces Library
This error is due to a default setting with new Simulink models, which is incompatible with the Contact Forces Library. To r...

8 years ago | 18

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Question

Rigidly connected port error with Simscape Multibody Contact Forces Library
Adding blocks from the <https://www.mathworks.com/matlabcentral/fileexchange/47417-simscape-multibody-contact-forces-library Sim...

8 years ago | 5 answers | 4

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answers

Answered
How to form a simulink block for MATLAB code ?
There is a MATLAB Function block you can use to insert your code in there: <https://www.mathworks.com/help/simulink/ug/creati...

8 years ago | 0

Answered
CAN bus unpack Big Endian Format
Hi Kyriakos, If you look at the <https://www.mathworks.com/help/vnt/ug/canpack.html block documentation>, you will see a diag...

8 years ago | 1

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Answered
How to create time varying inertia with Simscape Multibody?
EDIT: Variable solid blocks have been released in R2017b. _OLD ANSWER BELOW_ That object has fixed moments of inertia, so ...

8 years ago | 0

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Answered
Algebraic loop: PID control DC motor in Simscape
Check out this blog post -- I think it sums up pretty well how to address algebraic loops with continuous dynamics (like that PI...

8 years ago | 1

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Answered
How to translate a body in +Y direction?
You can use a Rigid Transform block to re-orient the Z axis before the Prismatic Joint block, so it is in the direction you want...

8 years ago | 0

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Answered
How to switch between plant on simulink
If all your plant models are linear, you could use a Linear Parameter-Varying (LPV) system. <https://www.mathworks.com/help/c...

8 years ago | 0

Answered
Plotting each iteration of a while loop
The easiest thing would be to use the |hold| command to prevent the plot being overwritten every time you call |plot|. The gener...

8 years ago | 1

Answered
How to create ROS message header time stamp?
I got this working with 2 updates. 1. The error message you have is because the ROS time object is being returned as this |mx...

8 years ago | 3

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Answered
Mapping and Navigation in Matlab
Have you seen the examples online? Building a map from sensor data, having known poses: <https://www.mathworks.com/help/robot...

8 years ago | 0

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Answered
Simulink parameters for Sensitivity Analysis
For Sensitivity Analysis to pick up a parameter, it needs to be a variable. For example, if you define myParam = 2; and ...

8 years ago | 0

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Answered
Cloud you help me.please (Detect pumpkin)
Have you tried using the Color Thresholder App? <https://www.mathworks.com/help/images/image-segmentation-using-the-color-the...

8 years ago | 0

Answered
Why use intermediate terms in Simscape?
There is an efficiency/memory vs. traceability difference. If you defined |Re| explicitly as an intermediate variable, you ne...

8 years ago | 0

Answered
How to set parameters in Simulink outside of the Mask Initailize
How about the Model preload callback? The images in this blog are old, but things still work this way: <https://blogs.mathwor...

8 years ago | 0

Answered
Simulink of PWM-controlled dc motor
You need a Voltage Sensor block (connected in parallel). Then, the output of that block will connect to your PS-Simulink Convert...

8 years ago | 0

Answered
Using vision.CascadeObjectDetector on Simulink
The issue here is that the |step| method of |vision.CascadeObjectDetector| can return a variable number of bounding boxes, from ...

8 years ago | 0

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Answered
Direct duty cycle control in MPPT
Yeah, the problem here is you're measuring Vdc incorrectly. Vdc isn't the measured DC link voltage on the output side... it's...

8 years ago | 0

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Answered
Set Parameter Block from Robotics System Toolbox doesn't change parameters in Gazebo. How should I make it work?
This is unfortunately not a MATLAB/Simulink specific problem. I have tried the same approach from a Linux terminal, where I ...

8 years ago | 0

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ros subscriber is interrupted by ginput
This is expected, sorry to say. Recall that the MATLAB environment is single-threaded, with the exception of optimized math f...

8 years ago | 0

Answered
Why my topic only send once?
This is because all the blocks (Blank Message and Constant) are using a "Constant" sample time. This means they will only update...

8 years ago | 0

Answered
ROS stand alone node
You should be able to use |rosdevice| for this. <https://www.mathworks.com/help/robotics/ref/rosdevice-object.html> You ca...

8 years ago | 1

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Call External C Function From Stateflow
If you go to the Model Configuration Parameters, there is a "Simulation Target" section where you specify the source files, head...

8 years ago | 0

Answered
when can I use a atomic subsystem in simulink model? (At what conditions we can use atomic subsystem in a model)
Virtual (or non-atomic) subsystems are simply a visual convenience, but Simulink treats the subsystems as if all the blocks exis...

8 years ago | 10

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Answered
How matlab coder, simulink coder and embedded coder dependent on each other?
MATLAB Coder is needed to use Simulink Coder. Both are then needed to use Embedded Coder. If you want standalone execution fr...

8 years ago | 3

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Answered
I have problem with derivative of an Input to Simulink-PS Converter
The Derivative block is very sensitive to the time steps your simulation is taking, and is usually not recommended. I'd sugg...

8 years ago | 2