Stack Overflow
Stack Overflow

Questions tagged [transfer-function]

A transfer function is a mathematical description of a system or part of a system. It relates the output of the system to the input. The system described by a transfer function is always linear and time invariant.

A transfer function is a mathematical description of a system or part of a system. It relates the output of the system to the input. The system described by a transfer function is always linear and time invariant.

Transfer functions are appropriate for single input single output systems; while several can be used to model a multiple input multiple output system it is usually more appropriate to use a state space representation in that case.

Common uses of transfer functions are;

  • Single-input single-output filters
  • Modelling systems for control theory
110 questions
0
votes
1 answer

How to get the following transfer function in Matlab

I was wondering if there is a Matlab code that can calculate the following TF from the 2 equations below. Thank You
Kia Rash
  • 5
  • 2
0
votes
1 answer

How can I extract data in a vector from semilogx figure?

How can I extract data in a vector from semilogx figure? I am using bode plot to identify a system transfer function so I need the two vectors coming from semilogx graph to compare slope and identify system from approximate solution. Is there any…
Rowida
  • 1
  • 1
0
votes
1 answer

implementation of generic transfer function using Matlab

I would like to know can anyone tell me how to implement transfer function a1s+a2/(b1s+b2) using Matlab meaning with for loop in the discrete form not using tf([a1 a2],[b1 b2]). For example if I want to implement a1/s I know I would do something…
justin
  • 173
  • 2
  • 3
  • 11
0
votes
1 answer

Nyquist plot from transfer function with quartic polinominal in denominator

So I have some very large and difficult transfer function, after some expanding and collecting by 's' in maple, i convert this to matlab and try to get nyquist plot, but this doesnt work. I am realy noob in this, why i cant take some plot. Also bode…
Tartachnyi
  • 3
  • 1
0
votes
0 answers

How can I get the Resonant Frequencies (Bode plot)? (Response of 2-DOF System)

I want to study the response of the system. I want to find the resonant frequency of the sprung mass (m1) and the resonant frequency of the unsprung mass (m2). Because I am not sure if I have understood the meaning of resonant. Let's say that we…
Bob
  • 13
  • 7
0
votes
2 answers

how to calculate gain of a controller for desired bandwidth?

I have been designing a controller for a motion system. The controller contains a gain, Proportional integrator(PI) and a lead filter in series. I have tuned the gain of the controller manually to obtain a desired bandwidth(cross over frequency).…
Somanna Thapanda
  • 11
  • 1
  • 2
0
votes
1 answer

Simple Neural Network Transfer Function for 1 to -1 Output

I am new to Neural Networks and currently in need of guidance for a question I was presented with. Question: Consider a single-input neuron with a bias. We would like the output to be -1 for inputs less than 3 and +1 for inputs greater than or equal…
ProToBrogrammer
  • 1
  • 3
0
votes
1 answer

Transfer Function Confidence interval estimation

I've obtained a Transfer Function model to predict the value of $y_t$ which is: $$ y_t - \mu = \frac{0.0034 + 0.0024B^9}{1- 0.9B}x_{t-9} + \frac{1}{1+0.6B} a_t $$ I obtained this model with SAS, and each parameter is estimated as a T-Student…
Afshin Oroojlooy
  • 1,326
  • 3
  • 21
  • 43
0
votes
1 answer

Mathematical modelling in Matlab

I am new to Matlab and I need to perform a simple task. I have an input function u(t)=2t-1 and an output function y(t)=(-4/45)e^3t+ (1/5)e^(-2t)-1/3t-1/9 I have to find the corresponding behavior model, defined via a transfer function and then…
user3331949
  • 23
  • 1
  • 8
0
votes
1 answer

design a Matlab filter from measured transfer function

I'm currently processing some data I acquired. The problem is: there's an element between the value I want to measure and my sensor (to be clear: there's a pipe between my microphone and the sound I measure). This pipe filters my signal X, through a…
elduche
  • 1
0
votes
1 answer

How to plot Root Locus without using special Matlab functions

I need to plot the Root Locus with a changing "k" of a given transfer function without using any special Matlab functions i.e., "rlocus", "tf". I'm allow to use roots. The code bellow displays an error/warning message (Subscript indices must either…
konkras
  • 1
  • 1
0
votes
2 answers

Transfer function of WaveShaperNode

I'm having trouble understanding how the transfer function for a WaveShaperNode in the Web Audio API works. As I understand, a transfer function is a waveshaper which takes in a signal input x and produces a new signal y. So, y = f(x) I understand…
chRyNaN
  • 3,592
  • 5
  • 46
  • 74
0
votes
2 answers

Windowing Transfer Function

I'm implementing a volume renderer and I want to use Windowing Transfer Function to enable the user to change the opacity of some regions. As far as I understood, there are three variables window, offset and scale The window is how much of my…
Lily
  • 816
  • 7
  • 18
  • 38
0
votes
1 answer

Reset state of continuous blocks (e.g., transfer function) in Simulink

How I can reset the state of a transfer function block in Simulink (i.e., reset back to the initial conditions)? For example, in an electrical network, this would correspond to reset capacitors/inductors to zero (or an initial state), for example…
divB
  • 896
  • 1
  • 11
  • 28
0
votes
0 answers

sym2poly selectively working matlab

I'm evaluating a series of theoretical (not necessarily functional) circuits in matlab. I have been trying to get the transfer function of the circuits and during the process I use the sym2poly function. Sometimes, sym2poly works and returns the…
MJAFort
  • 23
  • 7
1 2 3 4 5 6
7
8