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Calculate the sphericity of a Raschig ring
Sphericity is a measure of the roundness of any particle. It was defined by Wadell in 1935 as the ratio of the 'surface area of ...

10 days ago

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IEC 61672-1:2013 standard for A-weighting filter
Hi @Saket, Short answer: no, MATLAB doesn't have a 2013 option here. weightingFilter, visualize, and isStandardCompliant i...

10 days ago | 1

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Bouncing disk
A disk is placed in a rectangular room with dimensions a and b in a point with coordinates x0 and y0. The disk is given a startu...

11 days ago

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The glass half full
Identical glasses are placed in a triangular tower structure, such that the top level (L = 1) comprises one glass, the next leve...

11 days ago

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Pi Digit Probability
Assume that the next digit of pi constant is determined by the historical digit distribution. What is the probability of next di...

11 days ago

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Approximation of Pi (vector inputs)
Pi (divided by 4) can be approximated by the following infinite series: pi/4 = 1 - 1/3 + 1/5 - 1/7 + ... For a given numbe...

11 days ago

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Mersenne Primes vs. All Primes
A Mersenne prime (M) is a prime number of the form M = 2^p - 1, where p is another prime number. <https://www.mathworks.com/matl...

11 days ago

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hi I am currently doing my research on inverter fault prediction using Digital Twin and I am not being able to understand modeling in Digital Twin, please help with tutorials.
Hi @Varsha, There is no single "Digital Twin" block in MATLAB or Simulink. A digital twin here just means your Simscape Elect...

11 days ago | 0

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Answered
Simscape electrical thermal analysis
Hi @Seth, A few things jump out that would explain both symptoms. The flat 300 K reading: Simscape's built-in default init...

17 days ago | 0

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ultrasounds imaging using matlab tv radios signals
Hi @imaging, Following up on Star Strider's answer. I looked into this more and put together a PDF of references covering bot...

18 days ago | 0

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Sleep signal activation with TI DRV8243H Motor driver controlled via STM32 F413ZH running via External Mode on Simulink
Hi @Anirudh, There are really two separate things bundled into your post – the nSLEEP wake-up issue, and the PID design for t...

18 days ago | 0

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Answered
Simscape Battery: How to connect a Vectorized Thermal Port (1×14) to multiple Temperature Sources?
Hi @Ye, The error is happening because XminH is a 1×14 vectorized thermal port (one node per cell), but it's connected to a s...

20 days ago | 0

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Can I return the xml string from writestruct?
Hi @Martin Dale, Just to add a bit more to this — I dug through the docs and Matt J's right, writestruct doesn't have any hid...

20 days ago | 0

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Help - Nested uitogglebutton State Change Callback
Hi @Keith, This isn't something you're missing in your code, it's a hard limitation of how uitogglebutton and uibuttongroup a...

24 days ago | 0

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How to generate a parallel input interface (or vector port) using HDL Coder
Hi @KH, What you're seeing is expected behavior, and there's a setting that controls it, though it works differently dependin...

25 days ago | 0

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Draw a circle at the end of a quiver3 line
Hi @Ethan, Following up with a tested solution to my own question, in case it helps. To recap what I was after, I wanted a...

26 days ago | 0

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Custom Deep Learning Layer with different input and output format occurs error
Hi @Chuguang Pan, As mentioned in the comments, this turned out to be a bug in checkLayer on R2025a, confirmed by MathWorks s...

27 days ago | 0

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Replicating PCM System in Simulink: Issues with Signal Dimensions and Missing 'To Frame' Block.
Hi @Abdul, I think I found the real culprit behind the flat/zero scope output, and it's probably not the A-law or quantizer s...

28 days ago | 0

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Sonar image formation from Phased Array Systems toolbox
Hi @Michael, Got a working template for you, plus a bit more detail than I first gave. Attached: 1. forward_look_sonar_scan.m ...

30 days ago | 0

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is it easy way to use robust fuzzy logic controller for AGV
Hi @Medihiya, Yes,definitely doable — people have been using fuzzy controllers for this kind of thing for a while, and curved...

30 days ago | 1

Answered
propagateOrbit function fails on Epoch field format
Hi @Kurt, Wanted to close the loop on the Excel/datetime thing properly before saying anything definitive. Ran a couple of...

1 month ago | 0

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How to use tleread function on TLE file with alpha-5 satellite numbers
Hi @Kurt, Short answer: tleread() doesn't support Alpha-5 catalog numbers right now — it's built to expect the old-style fixe...

1 month ago | 0

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Answered
PMSM SMO rotor position calculation in Simulink
Hi @Zhiyu, I looked into this a bit and I think I found the source of the confusion. Based on the way the block is labeled (...

1 month ago | 0

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Adding a dummy non-learning, non-controlling agent halves the convergence speed of the main agent in MATLAB RL Toolbox
Hi @zhenpeng, Really solid ablation you've done here. I went through MathWorks' docs on train, rlMultiAgentTrainingOptions, a...

1 month ago | 0

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Confusion about ROS2 parameters in MATLAB Coder
Hi @Sönke, This is a real, documented limitation — not something wrong with your code. The getParameter reference page state...

1 month ago | 0

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How to simulate wheel-rail contact on a curve with Simscape Multibody?
Hi @Rafael, After digging through documentation and a couple of papers on this exact problem, here's what I found — and yes, ...

1 month ago | 1

Answered
Compatibility of Genesys ZU (Zynq UltraScale+ MPSoC) with Simulink HDL Workflow
Hi @JACOB ETOJU, You are right that the Genesys ZU is not on the official supported board list for HDL Coder. Short answer: i...

1 month ago | 0

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i have coupled odes with slip boundary conditions.
Hi @Sunitha k, Took a closer look at your code and got it running end to end, so here's what was going on and where it landed. ...

1 month ago | 0

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fitting is not working
Hi @Ehtisham, Just want to close the loop on this one. Walter was right that the bounds had an extra entry that wasn't even bei...

1 month ago | 0

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How to change the grid color in function heatmap
Hi @涛, Ran a quick test in MATLAB to settle this one way or the other, since dpb and Lucas already had the right instincts an...

1 month ago | 0