MATLAB Simulation

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Questions related to MATLAB Simulation

Machine learning: optimization with discrete and categorical inputs?

Dear all, I am a PhD student with little experience in machine learning. I have to optimize a function whose analytical expression in unknown, but I have a matlab script which computes its values...

12 December 2016 1,794 3 View

How can i use high-order tensors to represent a 3D objects,such as 3D faces

As to a 2D image,we can directly use the matrix(2-order tensor) to represent, but what for 3D objects? Recently,I have got a 3D face's shape and texture information,namely, x,y,z,R,G,B. But i...

09 December 2016 7,979 2 View

How to select/enter various Asynchronous Machine parameters in simulated model?

If we know only Power rating of motor with voltage parameter only. Default parameters are already there in Simulation model ,but if we want to change those ,How we can enter values of Various...

01 December 2016 329 6 View

Is there a better (efficient) way to code the coefficient matrix of Riesz space fractional reaction diffusion equation both in 1D & 2D in MATLAB?

I am working on numerical solutions of some nonlinear reaction diffusion Riesz space fractional equations. I wondering if there is a better way to code the coefficient matrix obtained from the...

30 November 2016 5,727 1 View

I am trying to simulate descriptor (singular) systems with time delays, but I don't know how.Any ideas?

E=[1 0 0;0 1 0;0 0 0] ExDot=Ax(t)+B(u)+f(x,u) according to f(x,u),I can't calculate x(3) simply. and Idea?

23 November 2016 9,649 1 View

How can I calculate the spatial LSI (using a 3*3 window) contrast for each frame of one image?

I have a raw speckle image with 100 frames which I want to calculate the special LSI contrast for each frame then average all the contrast frames and draw the final sLASCA. Would you please guide...

20 November 2016 5,823 1 View

How can I put the REAL elapsed time as a constraint in a Simulink simulation?

I'm using simulink with an optimization method to fit a dynamic model. My model is extremely stiff and for some parameters that set by the optimization, the simulation crash, but the simulation...

17 November 2016 3,236 5 View

How to calculate definite integral with varying bounds in Simulink Matlab?

I had calculated R from a block diagram in Simulink and I want to calculate J_rms=sqrt((1/Deta_t)*int(R, tau, t-Deta_t, t)); which 'R' has been calculated in previous block diagram, 't' is a...

16 November 2016 5,565 3 View

How to achieve consistency with Matlab canon(sys, 'modal') function?

I have a problem with CANON functions of different Matlab versions (e.g. 2007b, 2010b, 2011a) returning inconsistent results for the same call parameters (sysd = canon(sysd0,'modal'): - the...

10 November 2016 3,896 3 View

How we can use dll files instead of mex files in s-functions in matlab?

Hello! I’m working on seismic control of cable stayed bridges. In files included in the benchmark problem statement, only General_Newmark2.dll exists and I can’t find General_Newmark2.mex. I use...

08 November 2016 3,941 2 View

How to optimize coefficients of symbolic integral using Matlab?

I have a symbolic integral with symbolic parameters (x(1), x(2),x(3),t). I am trying to fit this symbolic integral to experimental data and acquire those parameteres (x(1),x(2),x(3)). I tried to...

07 November 2016 1,811 1 View

Matlab Classification Decision Boundary?

I have a question on the decision boundary for classification. In all the online tutorials, decision boundary are usually 2-d plot. For example, x vs y. However, I would like to draw a decision...

03 November 2016 7,878 4 View

About .tif to .mat convert in MATLAB?

I use < A = imread ('z.tif');save('aster.mat','A'); % code > as the source of my model, it's always saying: "Error ! ncol and nrow should be >=3 ! For 1D simulation, use 3 rows and...

10 October 2016 6,566 2 View

MATLAB control of USB power supply?

I have a USB powered LED strip which has a microcontroller in the USB cable itself. I am trying to control the power supply to the LED through MATLAB such that I can control the light signal...

07 October 2016 9,683 7 View

How can I import a stimulus file generated in Matlab to Clampex?

Hi there,I want to give current pulses through an extracellular stimulation electrode via Clampex and a stimulus isolator. It is not possible to generate the temporal pattern of the current pulses...

04 October 2016 3,231 3 View

What is wrong with my current waveform?

Hello, This question pertains to Matlab simulation. I will be grateful in case anyone knows the answer. Attached .docx file is a Simulink circuit of a inverter simulation. In order to implement...

23 September 2016 8,455 5 View

How to load multiple excel files, do some processes in each files and extract the derived values in Matlab?

Dear all, Since I didn't find yet the answer from matlab forum, I want to ask about it here. I have one folder with hundreds of xlsx files inside. I have a script running for each file and I've...

22 September 2016 1,040 2 View

How can I change values of some parameters at a certain iteration in time while I am running ode45 in MatLAB?

Hi, I am running some simulations using common ODE and SDE solvers in MatLAB and would like to change some parameters at certain points in time while the solver is running to simulate experimental...

20 September 2016 3,055 2 View

Magnetic field around a dipole?

I want to implement the magnetic field around a 3D dipole in z direction in MATLAB and look at it slice by slice in all three directions. I have got an expression from internet which is...

29 August 2016 9,088 4 View

Matlab Simulation singularity problem?

Dear all, I have a problem with matlab simulink file that i have built. I use some lookup tables inside the program. These tables contain two dimensional data; two inputs for the table with one...

16 August 2016 4,235 15 View

Are there tools in Matlab to create the phantom sinogram from the analytical expression directly?

To create a simulated phantom sinogram, it is common to firstly create the 2-d digital image: I = phantom(xxx), and then apply the radon() transform: R = radon(I, theta). Since the phantom image...

09 August 2016 3,767 3 View

Not able to get correct response out of a fitnet corve in matlab neural network?

Actually i am working on a actuator controlled laser pointer on a a screen.I feed the neural network with laser pointers coordinate on a screen as input and corresponding actuators position as...

08 August 2016 7,436 3 View

Please can anyone explain how to simulate parabolic antenna with MATLAB?

please i need explanation of how i can use MATLAB to simulate parabolic antenna

08 August 2016 3,969 7 View

I wish to use neural network using nntool of matlab for Devnagari Numeral Recognition, but getting error - ".Out of memory...". Can anybody help me?

The objective is offline handwritten Devnagari numeral recognition for which some features are extracted. · Training Data: handwritten hindi numerals - 10 numerals with 200 samples for each...

30 July 2016 7,858 3 View

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