Signal Processing Stack Exchange
Signal Processing Stack Exchange

Questions tagged [step-response]

51 questions
4
votes
2 answers

Which step response matches the system transfer function

A system has the following open loop bode plot: - Which one of the plots below describe the closed loop step response for the entire system? My attempt My initial thought was to look at the static gain from the open loop bode plot, which is…
Carl
  • 298
  • 1
  • 6
4
votes
1 answer

How do I get a faster system response?

I have this model in simulink (the graph is my output): The step input has amplitude 0.5 m/s, and it steps up after 0.1 seconds. The gain $K_p=5$. The saturation block is to keep the voltage between -3 and 3 volts. The transfer function is the…
Carl
  • 298
  • 1
  • 6
4
votes
1 answer

Transfer function with blackbox modelling is too slow compared to real expectation

I collected this data from a robot that drives with its wheels up. The blue curve is the voltage and that is my input. The orange curve is the wheel velocity and that is my output. I want to create a transfer function for when the voltage changes…
Carl
  • 298
  • 1
  • 6
4
votes
1 answer

Find transfer function from root locus and step response diagram?

I am given the response of a step of magnitude of 3 and the root locus and I have to find the transfer function of the system. The function I find gives me the step response(magnitude of 3 again) of the last diagram. I'm a beginner at this so I've…
John Katsantas
  • 225
  • 3
  • 10
3
votes
2 answers

Pade Approximation of dead time

For the time delay $e^{-sT}$ I shall find the Pade Approximation for $M = 0$ and $N = 1$. $f(s) = \sum_i^{\infty} a_is^i \approx \dfrac{\sum_{n=0}^{N} b_is^i}{\sum_{m=0}^{M} c_is^i}$ $e^{-sT} = \sum_{i=0}^{\infty}\dfrac{(-sT)^i}{i!}$ Using the…
idkfa
  • 135
  • 4
3
votes
1 answer

Overshoot computations not matching

Take the following transfer function of a 3rd order system: $$H(s)=\dfrac{2.302~s+0.3548}{s^3+0.739~s^2+3.223~s+0.3548}$$ with poles: Pole Damping Frequency Time Constant …
codeaviator
  • 133
  • 6
3
votes
1 answer

When input data into a low pass filter, are the first several data unusable?

For example, I want to feed a DC into a low pass filter. The the filter's first several output will not have the same DC value I want. Does it mean that I need to dispose first several results? How many shall I dispose? What is the technical…
richieqianle
  • 330
  • 4
  • 13
2
votes
1 answer

Impulse response for an LTI system

I'm new to signal processing and working my way through a textbook. There is an exercise where a causal LTI system is given that responds to a rectangular pulse. I have an exercise where a causal LTI system responds for a rectangular pulse $$ s(t) =…
Brain Damage
  • 23
  • 3
2
votes
1 answer

How to get Step Response from an Impulse Response in Simulink?

Im sorry if it seems like a trivial question but I am confused right now. Im currently watching my professors lecture. And he basically has $\lambda(t)$ as Step response and $k(t)$ as Impulse response of an LTI system. The integral of the Impulse…
John
  • 125
  • 5
2
votes
1 answer

Finding impulse response of an RC circuit from its step response

I have to find the impulse response of an RC circuit (c up ). I have to find it from the step response $g(t)$. I found that $V_i - V_c - V_r = 0$ , with $V_r = V_u$ So $V_u = V_r = R I_r$ , with $I_r = I_c$ $V_u= RC \frac{dV_c}{dt}$ $V_u = y(t)…
Elena Martini
  • 189
  • 1
  • 1
  • 11
2
votes
2 answers

How can I convert a step response that is described by the sum of two exponents to an IIR filter analytically?

If a system has the following step response: $$\begin{align} y(t) &= 1 - \Big(A e^{−t/T_1} + (1-A) e^{−t/T_2}\Big) \\ &= 1 - A e^{−t/T_1} - (1-A) e^{−t/T_2} \\ \end{align}$$ and I know the values of $A$, $T_1$ and $T_2$, can I transform this to a…
adr
  • 185
  • 1
  • 6
2
votes
1 answer

IIR filter design fitting step response

I have access to the step response of a system and I want to find its poles and zeros without knowing the order of the system. Consider an example of a step response of the system shown in the figure below. Here is the link to the raw data if…
shampar
  • 183
  • 9
2
votes
1 answer

Relating transfer functions with step responses

Relate the transfer function to its' corresponding step response. First, I tried setting up the poles and zeros of the transfer functions. This helped a bit since I know that $G_A (s)$, $G_B(s)$ and $G_C (s)$ should all have oscillatory step…
armara
  • 123
  • 1
  • 5
2
votes
3 answers

Is there a linear filter whose step response is an S-curve?

Is there a linear filter whose step-response (or ramp-response) is an S-curve? I think the properties I'm looking for here are (1) time-reversal symmetry, and (2) at least a continuous first derivative.
nibot
  • 3,583
  • 4
  • 26
  • 38
2
votes
0 answers

How to determine load cell response to arbitrary temperature changes with known step response(s)

We have a loadcell, the output of which is (naturally) temperature dependent. Under static load conditions, we have observed a dynamic response to temperature changes. Therefore, we did a step response experiment by placing the device in a -20…
user25326
  • 21
  • 1
1
2 3 4