Homework Statement
A screenshot of the problem:
imgur link: https://i.imgur.com/ljtoclm.png
Homework Equations
The Attempt at a Solution
My first attempt at the solution was this:
imgur link: https://i.imgur.com/TJcvOzy.jpg
However, I have access to the worked solution, and it is...
Homework Statement
Control systems subject. Have a DC motor setup on a difference op-amp, then with gain, and the axel moves a wiper on a pot used for feedback.
I understand the concepts reasonably well enough to complete the assignment.
I'm using MATLAB scripts to approximate parameters...
Homework Statement
https://i.imgur.com/WPAKuf4.png
seeking G(s) = \frac{\theta_2(s)}{\tau(s)}
Homework Equations
The Attempt at a Solution
What does it mean when the viscous drag is parallel to the axis of rotation?[/B]
It also turns out that this system needs two equations. I can...
In an assignment I have, we are told to implement a Frequency Modulating function without using any of MATLAB's in-built functions, and not to use it's integration function either (use cumsum instead).
I've been getting a lot of problems trying to solve these assignment problems without telling...
It's a student project for vacation research, under-grad, not sure how many of us, there'll probably be 4-6, we're motivated.
My original proposal was to get an FPGA (on an Artix-7 or Z-board) to run a CID camera sensor as a dumb peripheral, do some basic image processing stuff on it (perhaps...
ie: http://m.eet.com/media/1072296/RFFig84.jpg
I am 99% sure the answer is: no, it can't.
I've read that DSB-SC demodulation requires the carrier frequency to be put back into the signal at the receiving end prior to demodulation (or as part of the demod process), and that if its too out of...
Reduced Instruction Set vs Complex Instruction Sets for the CPU control logic.
In the first half of the nand2tetris course a series of projects lead me through describing a very basic CPU from the nand gates up in a basic custom HDL.
The CPU I eventually described was actually a Harvard...
I know very basically what pipe-lining is. My understanding is that the output from one "computing element" (usually a small set of instructions solving a simple task, such as say, finding a geometric mean) should flow immediately into the input of the following "computing element" where it is...
Homework Statement
Find the closed form of the impulse response of the system y[n] = 7y[n-1]-12y[n-2]+x[n] using the peel away and guess method. Ie, by using Python code to find the geometric ratios and amplitudes of the outputs as n grows large, then calculate residuals, and find the...
Homework Statement
I have a question related to taking the logs of transfer functions, getting the individual Bode plots of each subsequent factor, and adding those plots graphically.
I'm working from Fundamentals of Electric Circuits, 5th edt. Let me start with the following screen capture...
Homework Statement
Hello,
I am currently doing some holiday pre-study for signals analysis coming up next semester. I'm mainly using MIT OCW 6.003 from 2011 with some other web resources (youtube, etc).
The initial stuff is heavy on the old infinite series stuff, that seems often skimmed...
Homework Statement
imgur link: https://i.imgur.com/9jozS67.png
Homework Equations
The Attempt at a Solution
[/B]
Shouldn't I use V_{rms} = \sqrt{\frac{1}{T}\int_T v^2 dt}?
Which would be
\sqrt{\frac{100}{2\pi}\int_0^{2\pi/100}(20+60cos(100t))^2dt}
This equals \approx 79.88 V
The...
Homework Statement
I am given this beam:
imgur link: http://i.imgur.com/tw6EEJz.jpg
and asked to express the slope at A and the max deflection in terms of a, E, I, and Mo.
I am being told that my answer has the wrong multiplier...so I assume that my overall approach is ok (??) but I've...
Homework Statement
I have the second order diff eq:
Solving by Laplace transform gets me to:
I could use the inverse laplace transform that takes me back to e^{at}cos(bt) with b=0, but that only solves for the homogeneous (complementary) part of the equation, it won't reproduce the dirac...
Homework Statement
I'm actually a tutor, and a student of mine at uni has the following differential equation with initial conditions to solve
imgur link: http://i.imgur.com/ptuymQv.gif
From y(t) = c_1sin(3t) + c_2cos(3t), it is not possible to solve for the constants using the given...
I found a way that will get the members to within about 5-7% of what the computer simulates. Basically I assume that there's only three equal stresses, horizontal, vertical, and diagonal, then through some logic, by knowing which members are in tension and which compression, it becomes a simple...
Homework Statement
For a larger project we had to redesign a truss to prevent certain members going beyond yield stress.
I've found that due to the nature of the reaction forces and the supports used, the only way to do this is to introduce an X-brace in the bay nearest the supports (as well...
Homework Statement
imgur link: http://i.imgur.com/0Zc8nQe.png
Homework Equations
Y-Delta transformations
The Attempt at a Solution
Since it's a proof, I can't check the answer in the back.
What I did: I transformed the three impedances in their delta config to a Y config, and my TI89...
So the voltage across the inductor is just the square root of the source voltage squared minus the resistor voltage squared. That gets the right answer. But I don't fully understand why.
For a long time I was thinking that the 85 V drop on the R was measured at some particular time in the AC...
Homework Statement
Homework Equations
The Attempt at a Solution
I would show my working, but honestly, I'd really just like a hint as to how to begin, because I've tried multiple different things and just gotten tangled up in multiple equations that are way more complicated looking than...
Homework Statement
[/B]
imgur: http://i.imgur.com/9ktFGSs.png
Homework Equations
The Attempt at a Solution
[/B]
I came up with both 150 and 210 as the difference between the phase angles. I chose 150.
If you draw the vectors and compare their angles, the angular difference between them...
I am doing a BSEE and going power side. I am also applying for scholarships and bursaries, and would like to be able to talk specifically about power factors. More than this though, I want to understand it. Most of what I've found so far is very specialized and technical.
What good resources...
I want to build http://www.hobby-hour.com/electronics/lm2576hv-adj-buck-regulator-schematic.png
From http://www.hobby-hour.com/electronics/lm2576-step-down-switching-regulator.php
I might not be able to source exactly the same parts. I assume I have to use the same IC, but could I use a, say...
Homework Statement
I'm actually a tutor, and a student has shown me one of their assignments. I think there's a notation error, I'm quite confident there is actually, but I don't want to assert this, or have my student go asserting it, without some more certainty.
This is the question...
No, this is not from a textbook, this is from an assignment.
I1 and I3 are going in the same direction around the loop that we use in KVL though, no matter how you set it up.
I've only followed the current directions indicated. I haven't chosen my own directions independent of the problem.
Homework Statement
imgur link: http://i.imgur.com/JETj0Cq.png
Homework Equations
V_L = L\frac{dI_1}{dt}
V_L + V_1 + V_2 + V_{R1} = 0
The Attempt at a Solution
[/B]
Just using basic KVL, shouldn't V_L = -V_2 - V_1 - V_{R1} and so therefore we should get
\frac{dI_1}{dt} = \frac{-V_2 -...