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Derek Eccles


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Last seen: 10 maanden ago |  Active since 2014

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Professional Interests: digital video broadcasting

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Is space vector modulation the same as V/f control for ac induction motors (single and 3 phase) ?
Is space vector modulation the same as V/f control for ac induction motors (single and 3 phase) ?

10 maanden ago | 0 answers | 0

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Question


Can I use the model for a single phase asynchronous machine to simulate a single phase squirrel cage induction motor I rescued from an old washing machine.
I am guessing to use the electrical simscape model of a single phase induction motor (spim) there are a number of parameters/val...

10 maanden ago | 1 answer | 0

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answer

Question


Baseband FSK spectrum comparison Simulink & Excel
I have been using 2-FSK Modulator Baseband block along with the spectrum analyser to see how the spectrum changes as the simulat...

meer dan 4 jaar ago | 0 answers | 0

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Question


Spectrum output from a 2-FSK baseband modulator
Hi, I have built a very simple simulink model which includes a 2-FSK baseband and spectrum analyzer. The frequency seperation o...

meer dan 4 jaar ago | 0 answers | 0

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answers

Question


Export Spectrum Analyser trace to workspace or file
Hi, as the title says, I want to find out how to export the trace (dBm) from a Spectrum Analyser, in Simulink, to either the wor...

meer dan 4 jaar ago | 1 answer | 0

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Question


Frequency Response of a Square Wave in Spectrum Analyser
Why does Spectrum Analyzer 1, in the attached model give the correct graph for a few ms only and then flat line at -3200 dBm ?

meer dan 5 jaar ago | 0 answers | 0

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answers

Answered
FSK using baseband modulation
I am using a Math function block with the exp. function selected and the output data type as complex, to generate the carrier. ...

meer dan 5 jaar ago | 0

Question


RTL-SDR Receiver Gains
I am working through a book (see first attachment) and have come across a SIMULINK model of a receiver - second attachment. In t...

meer dan 5 jaar ago | 1 answer | 0

1

answer

Question


I get the following message when I run my rtl sdr model
An error occurred while running the simulation and the simulation was terminated Caused by: An error occurred in the driver li...

ongeveer 6 jaar ago | 1 answer | 1

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answer

Question


generator output smooth curve or stepped
I have 2 seperate models in Simulink each with their own waveform generator. One of these generators produces a nice continuo...

ongeveer 7 jaar ago | 0 answers | 0

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Question


calculate power spectrum from complex number in simulink's spectrum analyser
In my example of N=8, X(1) = -1.92 -0.8i |X(1)| = 2.08 |X(1)|/N = 0.26 POWER (w) = |X(1)|^2/N^2 = 0.0676 w = 30 + (10*log(0...

bijna 9 jaar ago | 0 answers | 0

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answers

Question


What spectrum analyser settings should I use
I have built a simple model consisting of a CONSTANT source, of amplitude 1 and a sample time of 62.5 us and simulation time of ...

bijna 9 jaar ago | 0 answers | 0

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answers

Question


how to calculate power spectrum from sampled signal
I am having difficulty resolving the differences when I compare the power spectrum for a simple Simulink model (pulse generator,...

bijna 9 jaar ago | 0 answers | 0

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answers

Question


Very Basic Simulink model
The attached simulink file is a very simple model of a signal source with a scope and spectrum analyser attached. The signal...

bijna 9 jaar ago | 0 answers | 0

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Question


why does MATLAB spectrum give different fourier coefficients
Please find attached : 1. Simulink model containing a periodic square generator and a spectrum analyser, configured to give a...

bijna 10 jaar ago | 0 answers | 0

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Answered
Why does this model not produce a frequency spectrum of the time based pulse signal ?
Thank you Star Strider for taking the time to answer my question. When I try to run the simulation the reply I get is somethi...

bijna 10 jaar ago | 0

Question


Why does this model not produce a frequency spectrum of the time based pulse signal ?
Having great difficulty using the spectrum analyzer. Have looked at all of the online help but still cannot master it. It...

bijna 10 jaar ago | 2 answers | 0

2

answers

Question


Learning about 16 QAM
I am trying out the MATLAB experience for 30 days and have found it very interesting, so much so I think I will invest. Altho...

bijna 10 jaar ago | 0 answers | 0

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answers