Recent content by GreenPrint

Homework Statement Hello, I'm trying to reduce the following block diagram Homework EquationsThe Attempt at a Solution I appear to be having some issues in doing this. The first thing that I did to reduce this block diagram was to take the forward path that has 2/(s+4) with negative...

I actually didn't know this E[F(f(t))F(g(t))] = E[F(t)F(g(t) -f(t))] = R_{FF}(g(t) - f(t))? If I were to try and find the power spectral density of X(t) I would make use of S_{XX}(f) = F[R_{XX}(\tau)]. Were F[] is the Fourier Transform. S_{XX}(f) = F[2*delta(\tau) - delta(\tau - 1) -...

Hey MathematicalPhysicist, Thanks for the reply. I didn't realize this was so simple. My new attempt at a solution I know that . But I don't understand how this equation is true . It reminds of the simple fact that if LHS = RHS LHS + 1 = RHS +1 But that doesn't seem to be the case here...

sorry I didn't mean to post

Homework Statement I'm posting this question here at this point. I am having difficulty understanding autocorrelation in terms of solving the problem below. I don't seem to understand the math behind this. A white noise process W(t) with unity (N_0/2 = 1) power spectral density is input to a...

The value for I_x doesn't seem to be correct. I'm not exactly sure how you got the value that you did. The node to the left of the 5 ohm resistor there's only three paths for current to flow through. It looks like your summing the currents at node A when you solve for Ix? If this is the case...

Oh ok let me look through this again.

What about the voltage across the inductor?

When you did your conversion, point B shouldn't be connected to ground, it wasn't in the original problem before the conversion.

I would recommend not memorizing such equations. It really makes things complicated when presented with problems that don't fit them. There are several ways you could solve the problem. Do you know the equation for KVL for after the switch is opened?

Homework Statement A white noise process W(t) with unity (N_0/2 = 1) power spectral density is input to a linear system. The output of the linear system is X(t), where X(t) = W(t) - W(t - 1) Determine the autocorrelation of X(t) and sketch it. Homework Equations Let τ denote a time...

Hi, I'm an undergraduate EE major and am having trouble understanding IGBT. I understand the basic principle, a PNP transistor in ? (forgot the name) configuration with a MOSFET with a parasitic NPN transistor. I understand that it's a 4 layered device. I however think I would struggle trying...

My text says that we can find the frequency, ω_{max} at which the maximum phase angle, Θ_{max}, occurs ω_{max} = \frac{1}{T\sqrt{β}} But this doesn't really seem to help since I don't know the frequency ω_{max}, unless it's the bandwidth frequency ω_{BW}, which I don't think it is. My text...

For a lead network G_{c}(s) = \frac{1}{β}\frac{s + \frac{1}{T}}{s + \frac{1}{βT}} I'm still unsure where \frac{1}{\sqrt{2}} came from though. There's a standard representation for the compensator C(s)? Edit 1: From the characteristic equation 1 + kG(s)C(s) = 0 kG(s)C(s) = -1 kG(s) = -...

done editing Homework Statement I'm given the following transfer function that represents a physical apparatus G(s) = \frac{X(s)}{F(s)} = \frac{3.333*10^{4}}{s^{2}} I'm asked to design a lead compensator to achieve closed-loop stability. The requirements are that it must have a transient...