Questions tagged [feedback]

Question 1

Suppose we had a system which introduced harmonics to the output.For a input of $H(s)$ the output could be written as $a_{1}H(s)+\sum_{n=2}a_{n}H(ns)$(open loop again). If we had a unity negative ...

Question 2

Consider the following approach for de-rating proportional feedback gains to account for a measurement delay by controlling a future-projected response: In practice, I've found this works pretty well ...

Question 3

I have a combination of a feedback control loop and feedforward compensation where $\tilde{E}$ represents a fluctuation of the system input (namely a input voltage of a dc-dc converter) which is ...

Question 4

I'm reading Richard Hamming's book, The Art of Doing Science and Engineering, and in the chapter Digital Filters IV he says "These recursive filters are often called 'infinite impulse response ...

Question 5

I have an FMCW radar I am working on where I am also attempting to remove a specific target from the received signal (before it is sampled by the ADC). To do so, during each FMCW sweep, I am ...

Question 6

(Context provided here, question summarized at the end.) Suppose I have an open-loop transfer function with two coincident left half plane poles like $$ H(j\omega)=\frac{-H_0}{(1+j\omega RC)^2} $$ ...

Question 7

I am trying to make a feedback howling detection program for an audio DSP chip I made a very crude one by counting zero crossings, doing something like this: ...

Question 8

I am trying to think of a way in which the base station (BS) can send say 100 bits of feedback to devices in my cell. My confusion is what is a good way to send this feedback bits. This is during the ...

Question 9

How do I reduce a block diagram with just a line as a feedback loop, I dont get how it adds K to the denominator. The bottom equation is supposed to be the answer.

Question 10

Pointing a microphone to a connected loudspeaker creates a feedback path and usually results in acoustic resonance, which manifests in a sustained oscillation: https://youtu.be/_XTtjZ8aZbc. A similar ...

Question 11

Can feedback stabilize a unstable system?I guess so since we may get rid of any poles in the positive complex plane by feedback but I am not sure.

Question 12

In technical terms, feedback occurs when the gain in the signal loop reaches "unity" (0dB gain). How to Eliminate Feedback Peak-to-peak amplitude (abbreviated p–p) is the change between ...

Question 13

I've implemented Miller Puckette's time-domain pitch shifting algorithm (http://msp.ucsd.edu/techniques/v0.11/book-html/node125.html) in PureData's help files in C++ (my code here: https://github.com/...

Question 14

I have been reading about dialup modems, but one thing I cannot seem to find out about is how implementers determined optimal transmit power/volume. Is this part of the echo cancelation framework? The ...

Question 15

Furthermore, how can you see from the pole/zero plot if the system has feed forward/feedback elements?

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Questions tagged [feedback]

Closed loop transfer function doesnt eliminate harmonics

Compensating optimal PD gains for a simple two-state linear system with different position/velocity measurement delays

How to exploit feedforward compensation for a system with transport delay?

A recursive filter without an infinite impulse response

System instability when using FIR filter in feedback loop for removing targets in FMCW radar return

Connection between positive feedback at DC and real-axis right-half-plane pole(s)

Zero crossing count vs zero crossing rate: does it make any difference?

How to accomodate feedback bits from Base Station to devices in LTE or 5g?

How do I reduce a block diagram with just a line as a feedback loop, I dont get how it adds K to the denominator

What does the frequency of oscillating microphone feedback depend on?

Feedback stabilizes unstable systems?

To create feedback, does the peak to peak amplitude of a signal loop have to have an amplification factor (gain) that reaches zero?

Introducing Feedback to Miller Puckette's Time-Domain Pitch Shifting Algorithm without Discontinuities

Did Dialup Modem use closed or open loop power/volume control? How did they determine Tx level?

How can you see from the transfer function of a system that it has feed forward/feedback elements?

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