I was reading transfer function and how to find the number of infinite zeros. Is it possible that given a generic system = G(s), where G(s) = N(s)/D(s). What is the advantage or disadvantage of having a large number of infinite zeros? Also is it possible to have number of zeros greater than the number poles in system G(s)?
When designing a cascade compensator for LTI system, lead or lag, how could you select compensator zeros and poles, for example, when should I use complex poles/zeors and when should I use real poles/zeros as a compensator?
Specifically I'm interested in when the surface X is the modular curve corresponding to Gamma_{0}(N). In case it's not well-known, a Hauptmodul is a generator for the 1-dimensional (as an algebra) algebra of meromorphic functions on X, i.e. the function field of X.
I'm thinking that, because X is essentially the same as the Riemann sphere, on which the function field is generated by z --> z (having order -1 at infinity), the answer to my question should be "yes". But I'm not versed enough in geometry to confirm this.
Hello reddit. I've been working on designing a buck converter with the controller for a class I'm taking. I'm trying to find all the zeros and poles. The buck converter has a low pass filter at the end. I've been using the equation 1/RC to find some of these frequencies. But I think my knowledge is lacking by using the transfer function to find the zeros and poles. I know that zeros can be expressed as T(s)=1+s/wz and poles are at T(s) = 1/(1+s/wp) but I'm trying to find the frequencies in terms of real components( RLC). I have included a schematic of the converter as well as the transfer functions and my work thus far. Can anyone confirm that I am going about this the right way. I'm not asking for solutions just reassurance I'm going about this the right way. Any feedback is greatly appreciated.
Here is the overall schematic http://imgur.com/haSrmTK
Here is thelow pass filter http://imgur.com/wyQ2uJp
Here is the transfer function http://imgur.com/ebuYvkz
Here is my work so far for the low pass filter frequencies http://imgur.com/79XsROz
Here is the error amp http://imgur.com/0cdXdOU
Here is the transfer function for the error amp http://imgur.com/xUPex5O
And here is my work for the error amp http://imgur.com/sc8Y1bu
Hi, I'm looking at the solution to one of the homework problems, and I saw this.
https://i.imgur.com/HLbINkp.png
If we want to boost the magnitude of the frequency response to 0dB, why do they add a pole (s+a)? I thought we would need to add zeros in the transfer function's numerator since we already have two poles that would make the system -40dB. I'm so confused right now. Thanks.
I am reviewing pole zero plots for a midterm. Some questions require us to determine if a filter is causal, anti-causal, or neither from a pole zero plot. I understand how to get the transfer function from a pole zero plot. Is there are way to determine the causality of a filter directly from the pole zero plot or its transfer function?
Hey /r/dsp,
Given only the poles, zeros and their graphical representation on the z-plane, how do I derive a transfer function of a system from that?
That means I'm looking for a function X(z) that solves for poles and Y(z) that solves for the zeros, if H(z) = Y(z) / X(z). How do I get the z-transform or the filter-coefficients (solving for a filter with 1x complex pole pair / 1x complex zero pair) from (1-z1)(1-z1*) / (1-p1)(1-p1*) ?
Basically I want to find out what the Matlab-function zp2tf does. I can solve it in Matlab but would like how to solve this on paper.
What am I missing?
Thanks in advance.
Seriously, how low can you go?!
It's good to keep up on current events.
Edit: everyone, I've read every one of these replies and you've all made my day.
I too am relieved to know that this is such a universal childhood (and adulthood, I see!) Experience!
I'd like to eventually get to 20-25 mile days as I prep for a thru hike within the next couple years, but I've never been a fast hiker.
On hilly but not mountainous terrain I actually do ok: avg calculated at 2.4mph over 50 miles in the last couple weeks, but that's with very little incline.
But my average when tackling moderate incline (avg 23deg grade) is closer to 1.25 mph, calculated over 10 miles on 3 days).
Two things that I know are slowing me down are excessive pausing as I stop to catch my breath, and possibly not taking big enough steps.
I think the former I can deal with by just hiking more and getting in shape. The latter I'm trying to deal with by stretching and getting more limber.
Just curious what kind of luck you all have had in increasing your speed. Tips welcome!
EDIT: lots of fantastic advice in this thread, thanks everyone.
