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30 views

Voltage Drift on an Open Circuit (and how to get rid of it)

I'm trying to create a custom lick-port to detect mouse licking behavior. I am following a design published here that uses the junction potential between the mouse's tongue and the metal water spout ...
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34 views

I've got way too high voltage after the transfer function. Why?

I want to control a simple control system with Raspberry Pi and Matlab. The charactheristic of the system : -Control system’s output voltage range: -12V – 12V -Analog-to-Digital converter’s input ...
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1answer
57 views

Is it possible to transfrom a transfer function into voltage?

So I have a control system which I'd like to control externally. I have the error signal from the system and I use an ADC to convert the signal to number. I have the transfer function of the system ...
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1answer
51 views

Thyristor voltage regulator with different fireing angle for each period with simulink

First of all I'm really low with EE so please, go easy on me. As home assigment we have to design Thyristor voltage regulator in simulink. It should run for 5 periods with different thyristor fireing ...
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1answer
74 views

Filters responses

I got a filter and I want to examine whether it is stable or not. My system has the following TF $$H(s) = \frac{0,0001s^4 + 10s^2}{0,0001s^4+0,05s^3+10s^2+s+1}$$ So after plotting the zpmap (shown ...
2
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1answer
73 views

State space modeling with disturbances using Matlab

I am doing a project which involves modeling a quadcopter in state space form using matlab. I first had to linearize the quadcopter equations of motion, and now have to implement them in a matlab ...
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1answer
47 views

MATLAB function fixdt() question

MATLAB has a function fixdt() that creates objects describing fixed-point or floating-point data type. So if we write ...
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1answer
67 views

MATLAB error: “acker” function not returning the same thing as ackermann's formula

I have a discrete time system Suppose I have the following AB matrix of my system $$A = \begin{bmatrix} 0 & 1 \\ 1 & 1.5 \\ \end{bmatrix} $$ $$B = \begin{bmatrix} 0 \\ 1 \\ ...
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1answer
20 views

How to achieve a block of Z^(-0.5) in Simulink?

I'm doing simulation in Simulink of Matlab, but don't know how to get a Z^(-0.5) cell like this:
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38 views

How to get change in position and rotation from gyroscope and accelerometer?

i have a 6-axis accelerometer and gyroscope MPU6050 . i'm using simulink with arduino to read to raw data from the mpu . I intend to measure something that only moves in the X and Z axis. I've heard ...
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104 views

Incremental Conductance MPPT algorithm in MATLAB Simulink

I am simulating an application of the incremental conductance MPPT algorithm with a boost converter in MATLAB Simulink. The PV cell and boost converter have been modeled. I am facing problems while ...
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1answer
54 views

Why does my bandpass RF filter complain about Ts in Simulink?

I am doing a basic amplitude modulator, and I'm using as input signal for now a Gaussian noise generator, then I modulate it with a carrier fc=2e9Hz. When using Simulink along with a RF bandpass ...
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29 views

Computing main lobe width of Hamming window in Matlab by plotting

(I have asked the same question in Signal Processing SE. I have repeated here hoping for more respones) I wanted to verify the fact that main lobe width of a Hann/Hamming window is twice that of a ...
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13 views

how to make parameters as input port in Matlab?

I want to calculate BER in a communication system in Matlab simulink. I have used from "error rate calculation block", which accepts the transmitted and received signals as inputs and the output is ...
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0answers
29 views

Voltage and Currents in Complex Domain of RC circuits in MATLAB

Define the transfer functions by defining s = jω such that the circuit can be simulated in Matlab, that is, can display all voltages and currents for the circuit. Determine the transfer functions of ...
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1answer
75 views

read and write error in matlab

I am trying to send a data=40 from matlab gui to pic16f877A via serial communication. To crosscheck value is properly transmitted to pic i also transmitted back that data from pic to matlab and ...
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1answer
82 views

analysis of RC circuit using Matlab

I designed the circuit and obtained the desired outputs correctly. for for circuit it R = 1e3 , C= 0.15e-6, and f = 250 , ( for RC circuit) and in the second part it asks to increase the frequency to ...
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43 views

determining appropriate group delay for FIR filter in matlab

I am trying to take a signal where the frequency with the max energy is about 180Hz and use a filter to distort that frequency by using a group delay. So far I have had no luck with matlab commands,I ...
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393 views

Real-time Matlab Simulink plot from serial port data

I have an arduino that constantly writes data via serial port on a usb that I want to plot in real time using Simulink (Matlab R2013b). I have seen matlab codes (.m files) that are working but what I ...
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50 views

Analysis of first order RC using Matlab

I finished designing the given circuit using Matlab but I am getting some weird output results on oscilloscope. and here is what I did I used the commands to define the R, F , C, and ...
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1answer
76 views

Matlab Components needed for Electrical Engineering Students [closed]

I am installing Matlab, and now I need to select the components that are required for electrical engineering projects, circuits, ect. ( for undergraduate students, not professionals) the list is ...
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36 views

Discrete time control in MATLAB: Why do I need ZOH before AND after a system?

I am following a very simple tutorial on modeling discrete time system in MATLAB. What confuses me is that in the literature, a discretized plant G_d(z) is a system for which the input signal is first ...
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54 views

Interfacıng Matlab with Agilent 34410A Multimeter

I have a agilent 34410A multimeter which I want to connect with my matlab program through TCP/IP. In youtube there is several videos It seems to be easy but I could not able to connect the 34410A with ...
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47 views

Conditions to connect Solar Power Panel to 3 phase Grid Connected supply

I want to connect solar panel to 3 phase grid, and i want to know what are the conditions for connecting them both. I have designed the basic 3 phase source which feeds RLC load, the matlab block ...
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1answer
70 views

lower and upper 3dB frequency from frequency response in Matlab

Is there any Matlab code available to find the lower and upper 3db frequency of a plot. If not what could be the easy way. I am aware of the theory but implementing is becoming difficult.
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2answers
181 views

Obtaining Poles and Zeros from frequency response

What is the process of obtaining the poles and zeros from frequency response plot or data. Any reference or Matlab code will be great help
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1answer
116 views

How does a DC-AC inverter's DC input current change with time?

Newbie question, would really appreciate some help. I am modelling a simple full-bridge inverter in Matlab. I've used the supplied example file of a full-bridge inverter that was developed by the ...
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33 views

Implement Automatic Gain control for 16 QAM

How can I implement an automatic gain control for 16 QAM modulation in Matlab preferably without channel estimation (trial and error may be).
2
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1answer
101 views

Parsing Raw ADC Data into Voltage Levels

I'm collecting single-tone test data on the ADC12J4000EVM using the TSW14J56EVM and the High Speed Data Converter (HSDC) Pro software and ADC12J4000EVM GUI. I am trying to capture raw time domain data ...
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52 views

dc motor fuzzy logic speed control

I came across this separately excited DC motor model(USING matlab) using PI control for speed control.I am having difficulty in understanding how armature voltage is kept as constant.If the model is ...
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1answer
100 views

Signal sampling question here please?

We have the signal \$y(t)=7\cos(wt) \$.We have \$f(s)=100~Hz\$.I need to find \$f(T)\$ and reconstruct the signal so that we wont have loss of signal. I think that we need to take \$f(T)>2f(s)\$ ...
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1answer
79 views

Zynq 7020 system generator start up problem

I have recently started using Xilinx system generator for simulating dvb communications system. Matlab 2014b and Vivado 2014.4 were installed and everything was running smoothly with no problem. At ...
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32 views

How to sort the load bus in a particular order in PSAT Matlab

I am using PSAT to run a powerflow in a 50-bus system. These are the steps I followed: Load the MDL and MATLAB code file containing the bus system Click the "Power Flow" button After 4 iterations, ...
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2answers
591 views

first Mini dsp Project using matlab and books

i have basic knowledge of matlab and took signal and system course. i want to do project like below. but dont know filter on matlab. are there any books i can learn fft commands etc.(dft, ...
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27 views

How to separate the gyroscope signal into segments?

I found similar topic: How to Segment Accelerometer Signal at idle points But there was no answers. Also, I need algorithm to separate signal into segments but in MATLAB. I have one idea, to do it ...
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1answer
22 views

interfacing MATLAB and ClearSCADA

Is it possible to pass data from Matlab to ClearSCADA software? On their forums I found this: http://telemetry.schneider-electric.com/id3/forum/messageview.cfm?catid=51&threadid=973 but this ...
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159 views

Convolution in Matlab of transfer function

My problem is find the output to U(t+1)-U(t-1) with Matlab given the transfer function H(s). I know that I should be able to find the output to any input of an LTI system when given H(s), so I tried ...
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1answer
194 views

How do I create a Bode plot in Matlab?

I have calculated a transfer function for a specific system (a low pass filter): $$H(j\omega)=\frac{1}{RCj\omega +1}$$ It seems to me that the standard way of plotting the frequency response of the ...
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1answer
51 views

Can I get Simulink blocks from commlib individualy

We were simulating communication with DPCM modulator in school. I saved the Simulink scheme and now I would like to simulate some more situations at home, but my commlib doesn't have the modulator we ...
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1answer
118 views

How to calculate logic gates power in microwatts in Matlab?

I am designing a logic gates sequential circuit in Matlab2014 Simulink using logic gates and I am giving Pulse and Constant at the input of the circuit but I cannot measure current and voltage at the ...
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2answers
73 views

Sketching Sine Wave in Matlab

I am working with matlab in college and I need to generate sine wave whcih represents signal going through a wire. But its not clear to me what t equals to and how can I multiply \$y\$ by \$t\$ this ...
3
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1answer
134 views

Cross Correlation values

I'm trying to develop a flow meter using the cross correlation algorithm. I'm using 2x IR leds and 2x phototransistors and a MSP430F5529. One pair of phototransistor-Led go in the upper level and the ...
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1answer
194 views

How to calculate the variance of a discrete signal?

Explained as: 'the variance of the signal is the mean of its squares minus the square of its mean' The mean of its squares (average of instantaneous power of all samples) minus the square of its mean ...
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68 views

Lock-In amplifier

I am currently performing experiments on FM Atomic Spectroscopy. The light from VSCEL is interacting with an akali vapor in a cell and the output is received at the photodetector. The output contains ...
3
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3answers
288 views

Non ideal op-amp equivalent circuit output voltage

I am creating this question to ask you about a "strange" behavior I am observing in Matlab about an op-amp circuit. I am reading "Fundamentals of Electric Circuits" the 5th edition, and in the chapter ...
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198 views

How to fit practical PID controller state equations into a state-space matrix representation (to be used for RK4 through MATLAB)?

So I need to implement an RK4 algorithm of a state-space matrix in order to convert it from continous to discrete time (using RK4 is the specified method in the assignment Q). Diagram of the ...
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52 views

All Xilinx Blocks must be contained in a level of hierarchy with a System Generator Token error in xilinx

I am trying to simulate psuedo random data generator on simulink but I am getting this error ...
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1answer
179 views

Teensy + Matlab Serial Communication Problem (12Mbit/S)

Im trying to send some data from my teensy to matlab but matlab didnt even call the callback function: This is my matlab Funcion: ...
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1answer
215 views

Implementing High Pass Filter in Simulink

I am trying to implement the following block diagram using Simulink in Matlab. I am having trouble getting the high pass filters to work properly. To do the filtering, I am using the First and ...
2
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1answer
270 views

How does this Matlab code work?

I came across this uncommented Matlab code except for the header: ...