MATLAB is a commercial numerical computer algebra system

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0answers
23 views

How to test digital HPF in verilog [on hold]

I have an HPF generated from MATLAB Into a verilog code. I would like to test it by simulation. How can i do it?
-1
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0answers
21 views

Image Processing using Xilinx Spartan 6 [on hold]

I'm about to start an image processing project using Digilent Spartan 6 board. My objective is to design a processor for the purpose of image scaling. Is it possible to load an image directly using ...
-1
votes
1answer
35 views

Applying 1st order filter [closed]

I have a 1st order continuous filter T * y'(t) + y(t) = u(t) . I discretized the equation by hand and applied filter and I used ...
0
votes
0answers
7 views

z bus data of IEEE 33 bus distribution system [closed]

I need the values of diagonal elements of z bus for standard IEEE 33 bus system for carrying out the calculations for the optimal sizing of DG. thanks
-2
votes
0answers
27 views

power flow balance equation as a constraint in genetic algorithm on matlab to minimise the cost of generators [closed]

social welfare= B(Pdi)- C(Pgi) where B(Pdi)= 60*Pdi and C(Pgi)= aPg(i)Pg(i)+bPg(i)+c and i=1,2,3..6 constraints are Pg(i)-Pd(i)=sum(j=1,2..n)delta(i)-delta(j)/x(ij);(equality constraint) and line ...
1
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0answers
16 views

SiC Schottky power diode MATLAB simulation issue

Hi Everyone (first time poster), I am modelling a 4H-SiC Schottky power diode in MATLAB and I have come into some issues with MATLAB when trying to make an I-V curve. I was reading this paper and I ...
3
votes
1answer
36 views

In a Delta-Sigma ADC, does noise shaping bring the noise to the signal's frequency?

I'm trying to understand the Delta-Sigma ADC. It is known that it pushes the quantization noise to be in the higher frequencies (noise shaping). Since I don't quite understand how this works, I ...
0
votes
1answer
12 views

Error in powergui block in Simulink involving vector dimensions.

I am designing a DC machine in Simscape, but when I try to run the simulation there is this weird error: "Error in port widths or dimensions. Input port 2 of ...
-2
votes
1answer
44 views

axis rotation going in opposite direction to expected -can't find bug in matlab code [closed]

I can't figure out the bug that results in my image rotating clockwise when the input is a positive angle of rotation. Here is the matlab code; ...
-2
votes
1answer
29 views

Direct Torque Control of Induction Motor (DTC)

I was working on a project on how to design a classical Direct Torque Control drive DTC but there is a ceratin point that i can't understand. How can we calculate the Reference values of the torque ...
-2
votes
0answers
44 views

Matlab filter to vhdl

I want to filter a sine wave signal using Altera FPGA(cyclone IV). The sine wave is first converted by an ADC with Fs= 20Mhz, then stored into a register inside the FPGA. The frequency of my signal is ...
0
votes
0answers
25 views

Hysteresis controller in Simulink

With reference to THIS document's 7th figure, I'm trying to simulate a hysteresis controller with a specified dead band. I have all the components necessary but the comparator block seems to be a ...
0
votes
0answers
15 views

State space averaged model or switch averaged model?

While modelling the buck converter, which model best describes both CCM and DCM of operation? I'm trying to model in MATLAB for a CCM and DCM combined buck model. Can anyone help me with the best way ...
3
votes
4answers
92 views

How can a transfer function with only real poles show an overshoot in the step response?

I am trying to simulate the circuit below on SIMSCAPE, and its behavior is different in the simulation and in the real world. The simulation shows an overshoot, while the measurements I made do not - ...
0
votes
0answers
7 views

Converting binary array to an ASCII array [migrated]

I'm working in MatLAB, trying to convert an array of binary numbers to readable characters using an ASCII table. I created a script in MatLAB and the code is as follows. fileID = ...
0
votes
1answer
29 views

Independently toggling two series switches to multiply two pwm signals

Preface It is known that one can synthesize a signal into a train of boxcar pulses (pwm modulation), each with the same amplitude, if proper low pass filtration is applied to this pulse train before ...
-1
votes
1answer
86 views

Filtering a frequency and its harmonics (Matlab)

I want to remove all the frequency components from a .wav file except those within \$\pm 25\$ of \$523 \ Hz\$ as well as its harmonics. Attempt: I used a high pass filter first to suppress ...
0
votes
1answer
27 views

Gaussian function power spectrum (Matlab)

I am trying to plot the power spectrum (\$|FT(f)|^2\$) of a Gaussian function, and overlap it with the theoretically expected spectrum calculated from the Fourier transform pair: \$e^{-\alpha t^2} ...
0
votes
1answer
37 views

Generating FFT on data recived from 20Amp(ACS712) current sensor using arduino & processing IDE

Currently, for generating FFT on the data received from ACS712,i used the following method: first the data is sent to the Processing IDE from the sensor via arduino. the processing code converts the ...
0
votes
1answer
44 views

Gaussian Function Fourier Transform (Matlab)

I am trying to write my own Matlab code to sample a Gaussian function and calculate its DFT, and make a plot of the temporal Gaussian waveform and its Fourier transform. According to the FT pair: \$ ...
3
votes
2answers
50 views

Band-pass filter with a given impulse response (Matlab)

I am trying to pass a .wav sound waveform through a band pass filter whose impulse response is given by \$ h(t)=50u(t) \exp(-10t) \sin(2 \pi 440t), \$ I have imported the file into Matlab as ...
0
votes
0answers
24 views

Builing a Shunt active power filter in the synchronous reference frame

This schema representing a shunt active power filter in the synchronous reference frame, I'm focusing on the Area in the red box ! Schema I want to learn how to build my own shunt active power ...
0
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0answers
13 views

matlab - simulink - entering impedance on a transmission line

Does anyone know if its possible to enter line impedance into a Simulink model. When given only a value of impedance? and NOT the constituent capacitive, inductive and resistive components. If any one ...
1
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0answers
34 views

how to sample and modulate a gps gold code

I am trying to simulate the data transmission of a GPS satellite. Telecommunications is not my field so I am struggling a bit with some concepts. I managed to generate the Gold code of the GPS ...
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votes
1answer
33 views

Simple Matlab Problem [closed]

I just started working with Matlab last week, so I'm very new. After searching for a while, I realized that I don't know how to fix a Matlab script that I'm working with. The problem is given below. ...
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votes
2answers
30 views

How to do level shifting signal in simulink matlab?

i want to do level shifting signal from -5..5v to 0..10v in simulink.. anyone know how to do that in simulink? thanks
0
votes
1answer
31 views

How to implement a MIMO model with state space block in sumulink?

I want to implement an state space model with 4 inputs and 4 outputs at simulink. But the state space block has only one input and only one output. So what can I do here?
0
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0answers
21 views

display the output of a MATLAB simulation model for an induction machine in space phasor illustration

Hello, do any one know, if is it possible to display the output of a simulation model in MATLAB with the space phasor illustration? (in german: Raumzeigerdarstellung) as the picture shows: I have ...
0
votes
1answer
23 views

What is the difference in the input from inbuilt microphone and an external microphone amplifier?

I wrote a MATLAB script interfacing my laptop's inbuilt microphone to calculate the dbA levels of noise in my classroom. (un-calibrated, as of now) I want to now use this dbA calculation script on ...
0
votes
1answer
24 views

Transfer function just from data?

Is Matlab able to formulate a second order transfer function from just a dataset of 2 inputs and their 2 outputs or I still need to conduct a step response on my MIMO model to calculate the TF ...
0
votes
1answer
75 views

Interfacing Microphone amplifier with MATLAB A-weighting filter

I am working on a project that essentially would be used to measure the Noise produced by ceiling fans and regulate the speed if the noise interferes with speech levels. For the first phase of this ...
0
votes
1answer
72 views

MATLAB analog filter impulse response

MATLAB's impz is used to get the impulse response of a discrete time filter. freqz is used for the frequency response of a ...
0
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0answers
59 views

Unstable bode plot with positive gain margin and positive phase margin

I'm trying to design a compensator for a buck-boost converter (whose specifications I control). The model I used is: The transfer function of the buck-boost converter which I use is : (LIs - 1) / ...
0
votes
1answer
216 views

2nd order Sallen-Key Bandpass filter design in Matlab

I'm trying to design a Sallen-Key BPF within Matlab. With the documentation found on ti: http://www.ti.com/lit/ml/sloa088/sloa088.pdf, I studied and understood the basic. As for the design: The ...
0
votes
1answer
32 views

Feedback Control: Unexpected result for block diagram simplifications using matlab

I made some simple calculations regarding block diagram algebra. The problem is that I don't get the same result using matlab. Here is the system with it's corresponding blocks: $$H_1 = z+2$$ $$H_2 ...
0
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0answers
96 views

How to determine continuous-time delta-sigma loop filter coefficients?

I want to design a 3rd order CT delta-sigma CIFB modulator having determined a noise transfer function, but I can't grasp details how to do this. I am using the popular Delta-Sigma Toolbox by R. ...
0
votes
1answer
71 views

designing PID controller using Ziegler Nichols algorithm

I'm trying to use Ziegler Nichols algorithm to design PID controller for the following transfer function: G=w^2/(2*xws+w^2), w=1 , x=0.2. so since the step response for this function is a second ...
0
votes
1answer
300 views

Setting up a PID controller in Simulink for an Arduino example project

On the internet I found this "Arduino PID Example Lab" as an introduction to PID-contole. I set up the hardware and it is working like it is diskribed in the document. Since it is possible to connect ...
0
votes
2answers
59 views

How to perform a \$\dfrac{1}{s+a}\$ type integration in MATLAB?

Currently, I am integrating an ODE of the form \$\dot x = f(x,t)\$ in MATLAB using the function ode45 This is equivalent (in block diagram form) as passing \$\dot x\$ through an integrator ...
0
votes
1answer
59 views

Sampling frequency and FFT

I have tried this example code for sampling and FFT in MATLAB, but I have noticed that when the signal frequency becomes closer to nyquist frequency , some errors ( small frequency components near the ...
1
vote
1answer
53 views

Controls: Getting the feedback transfer function of a Plant and Controller

I'm designing a function in Python similar to MATLAB's 'feedback(T)' command. I know modules already exist, but it's something I want to do for myself for fun. However, I am running into issues. Let's ...
1
vote
0answers
39 views

Why does Simulink only allow you to linearize parts of your model that contain arrows?

I created a Boost converter but can't get its open loop transfer function because Simulink won't let me linearize. Here it allows me to linearize the input to the scope (I don't know what purpose ...
0
votes
0answers
91 views

How to study temperature influence on Li-Ion Batteries?

I would like to study and simulate the influence of the ambient temperature on a given Lithium Ion Cell. Behavior while charging or discharging for both internal Resistance and capacity. My ...
2
votes
1answer
254 views

How to calculate poles of overdamped, 2nd order system if only given experimental data?

I have been looking about how to calculate poles if I have experimental result of a step response in Matlab that looks like an overdamped system. So far I only found information (through internet or ...
0
votes
1answer
93 views

Step response of feedback system

We have a feedback system F(s) as in this figure: and this is the step response of G(s): and H=10. F(s): We got the root locus of the system F(s) as this: then we determined the gain ...
1
vote
2answers
133 views

Application to solve for Fourier series coefficients?

Does anyone know a way to solve for Fourier series coefficients using Matlab, WolframAlpha, random web app, etc.? For example if I wanted to solve for and plot the Fourier series coefficients for the ...
-1
votes
1answer
92 views

solve a problem with simulink

I have this problem which i want to solve using simulation. How i think it shall work in Simulink( i am not sure this is the way to do it) : -measure power and then decrease the voltage and increase R ...
0
votes
1answer
79 views

Matlab: Channel coding and modulation [closed]

This is a beginner level question on understanding modulation and channel coding. The confusion arises when I am trying to implement the concepts. Let's say I have the information bits as ...
0
votes
1answer
139 views

Matlab simscape component modification.

I am new to Matlab. I wanted to use Simscape resistor element and want to make it Temperature dependent. However i open the code of the component by view source code. I modify the code but couldn't ...
1
vote
2answers
128 views

Reduce the impact of gaussian noise on DTMF decoder

I have a Matlab code to decode digits from a given DTMF audio file (wav format). Considering the input signal to be in the form of x(n)+αv(n) where x(n) is the noise-free signal (i.e. the given DTMF ...