Questions tagged [step-response]

The tag has no usage guidance.

0
votes
0answers
24 views

Step response of Series RLC circuit

Can we solve this question by using KVL to derive characteristic equation and passive sign convention at t>0 rather than using derived formule. p.s. the response I(t) is underdamped. I am having ...
0
votes
1answer
25 views

Characteristics from transfer function

All! I am trying to figure out characteristics of a second order system The system is (for example) And its characteristics for an unit step input are I want to solve this equation by hand and ...
1
vote
3answers
89 views

Bandwidth and stability of nonlinear circuit

I'm designing an antilog amplifier which produces an exponential output (0.4 mV to 4 V) for a 50 Hz sawtooth input waveform (4 mV to 4 V ramp). If this were a linear circuit, I could determine the ...
1
vote
0answers
39 views

Controller for RC Filter

My class was asked to implement in MATLAB, a controller for an RC filter configuration with output response: 4/(s+3) The controller should give an output response whose steady state is 1 to unit ...
3
votes
0answers
98 views

Find transfer function and step function for this circuit

Can someone help me to find the transfer function of this circuit (i want to have the tension through the capacitor I think) and the step response in order to get the voltage in the function of the ...
0
votes
0answers
35 views

Calculating input voltage required for a series of capacitors to reach a a certain voltage in a certain time

just had a question regarding a system of capacitors. Its from the EE263 Introduction to Linear Dynamical Systems, Stanford University, 2008 Prof Boyd. If I have the step response and eigenvalues of ...
1
vote
2answers
98 views

How can I estimate TL431 output voltage swings based on datasheet alone?

I am trying to design a series-pass regulator that brings 12V down to 3.3V. If I see a 20 mA step change in current, I would like to stay within a certain output voltage range (±2%). What parameters ...
-1
votes
1answer
77 views

Analyzing circuit with dirac delta current source without using Laplace transformation

At \$t=0\$ the switch is closed and \$v_o(0)= -5 V\$. The problem asks for \$v_o(t)\$. I did it using Laplace method and get $$v_o(t)=5+10\,e^{-2t}$$ which does not even satisfy the initial condition,...
0
votes
1answer
43 views

Determine the impulse response of the following discrete system

I'm not sure how they got the answer (provided below) for the following discrete system y[n] = x[n]- 2x[n-2]+ x[n-3]- 3x[n-4] the answer is given as .... h[n] = [1 0 -2 1 -3] why is this? any help ...
1
vote
0answers
608 views

PI Controller Design (Ziegler-Nichols) and Unit Step Response Graphing for 4th order system

I have a system that requires a PI controller designed using the Ziegler-Nichols Methods. I would also like to plot the unit step response in Matlab, but I am getting extremely weird results. This is ...
0
votes
1answer
74 views

What is the relationship between an amplifier's step input and the frequency sweep response?

What is the relationship between step input response and the frequency response of a system such as an amplifier? I see similarities between the step input response of an amplifier and the frequency ...
1
vote
1answer
97 views

Analysis of BJT transistor - is a linear analysis possible?

Since semiconductors aren't passive components, can I realistically derive analytic solutions for a circuit with BJTs? I know this may seem like a very naive question, but am I on the right track with ...
1
vote
1answer
128 views

Gain of an experimental first order step response

I have a pwm driven DC motor control system with magnetic encoder that measures the output shaft speed and outputs the RPM values every 50ms over serial comms to plot a graph of RPM vs Time. The ...
3
votes
1answer
254 views

Equivalent Inductor Equation (Antoniou Gyrator Proof)

I've been working on a proof for University and I've been able to understand most of what I was asked, but I'm having trouble understanding why is it that the equivalent inductor in an Antoniou ...
1
vote
0answers
78 views

Would a current feedback op-amp work well as a precision ground reference?

I've been looking into precision ground reference circuits to form ±5V rails from a 10V supply for a project I'm working on, and noticed that current feedback (CFB) op-amps have some desirable ...
0
votes
1answer
956 views

Transfer function of high pass filter via impulse response function

I'm having a hard time computing the transfer function of a high pass RC filter, by taking the Fourier transform of its impulse response function: $$ H(\omega)=\int_{-\infty}^{\infty} h(t)e^{-i\omega ...
0
votes
1answer
441 views

how to obtain the parameters of the step response within matlab in open loop?

I have step response in open loop of my model that i stored in workspace and I want to use Matlab to obtain the: T time constant, L dead time and A (see figure below).is there a command for that like ...
0
votes
1answer
285 views

step response data extraction from response data of a model(simulink)?

I want to design a PID controller with the step response method, so I needed to save the step response of my model in simulink in workspace (Vout) with saved format :structure wih time, I exctracted ...
0
votes
1answer
184 views

Step Response of an RC Circuit (Problem)

I have this example below from "Fundamentals of Electric Circuits", example 7.11. simulate this circuit – Schematic created using CircuitLab The question goes like: The switch has been ...
1
vote
2answers
154 views

How to Find DC Step Response of Semi-Parallel RLC Circuit

Hi everyone, I find myself stumped on how to approach this problem since there is a resistor in series with the capacitor for what is otherwise a parallel RLC circuit. First off, I am attempting to ...
1
vote
1answer
168 views

Step Response of Ideal Inductor with Current Source

I'm taking an electronics course to get a physics minor (I'm an applied math major) and today, the professor shows a diagram of an ideal current source connected to an ideal inductor. Crazy stuff I ...
1
vote
1answer
125 views

Ringing NOT at crossover frequency

Assume I have a system with open-loop gain G = (s+1)^2/s^3. This system has a negative feedback with feedback factor 1. I plot the open-loop gain by Bode and see that the phase margin Pm = 21.3877 at ...
1
vote
0answers
177 views

PartSim Simulation for Transient Step-Response (RC Circuit) Has Unexpected Result

this is my first question on stackexchange, so forgive me if my format is not ideal. I am currently trying to simulate a RC circuit, and producing a step-response graph that should look similar to ...
0
votes
1answer
309 views

Solving RC circuits with impulse or unit step input by using convolution integral

I want to learn the solution of RC circuits by method of convolution with impulse response and input and find zero state solution.However I couldn't understand clearly the using of the method. For ...
3
votes
1answer
107 views

Understanding digital filters, specifically their effects on time domain information, how to preserve the waveform of a signal being filtered?

According to Steven W. Smith, in his book: The Scientist and Engineer's Guide to Digital Signal Processing, when designing a digital filter, "Good performance in the time domain results in poor ...
0
votes
2answers
130 views

When measuring the fall time, why should you find it between 90% and 10% of the curve?

While researching the standard method of measuring fall time (and rise time) it seems to be standard to take the start and end points for measurement to be when the curve is at 90% of the maximum and ...
11
votes
3answers
5k views

Why do we use step response? [duplicate]

We tend to identify systems more often by using the step response. Why? Especially when the impulse response is directly related to the transfer function?
1
vote
1answer
95 views

Identify transfer funtion given step response

This is the system with its step response below. I'm asked to find the transfer function. Note that this is a question from an exam sheet and a computer can't be used. I can say that it has to do ...
0
votes
0answers
73 views

Design controller to get this response

We have the following closed loop system where a is from 1 to 10 and p from 0 to 1(excluding 1). We want to design controllers H(s) and C(s) so that the step response is inside this area This is ...
0
votes
1answer
144 views

Current in RC Step Response circuit

I was simulating the following RC circuit to know the behavior of current through various components. I got the following plots.. To satisfy the KVL at t=0+ voltage across capacitors will indeed ...
0
votes
2answers
279 views

pulse response of opamp integrator

I was simulating the below opamp integrator circuit with pulse current.As this is an inverting integrator I thought it would integrate the input current and give me a triangular waveform. But after ...
0
votes
2answers
1k views

How to plot state space variables against time on unit step input?

I have a system defined in state space model with the following matrices A = $$ \begin{matrix} 0 & 1 & 0 & 0 \\ 0 & 0 & 1 & 0 \\ -1280 & -...
-1
votes
1answer
74 views

how to solve electric signal noise using lest capacitor size or no capacitor at all?

I have a chip that I use Arduino to program. The chip takes the voltage as an input. I have 10 lights as an output according to the range of the voltage one of the light turns on and the other ones ...
1
vote
1answer
374 views

How to find the step and impulse response of a circuit with a diode

I have a circuit similar to the following: simulate this circuit – Schematic created using CircuitLab I am trying to find the impulse and step response mathematically. I know I can split the ...
3
votes
3answers
6k views

over and critically damped systems settling time

I know that for second order systems the settling time(St) equation is: So my question is, should this same formula be used when the system is over or critically damped? Is it right to use it in that ...
0
votes
3answers
108 views

identifying overshoots in given state space system with step inputs

Suppose I have the following state space system: $$ \dot{x}(t) = Ax(t) + Bu, \quad y(t) = Lx(t), \quad x(0) = x_0\neq 0 $$ where \$A\$, \$B\$ and \$L\$ are real matrices, \$u\$ is a constant real ...
1
vote
2answers
1k views

Plotting step and impulse responses on Matlab

I'm trying to graph a simple response function: 1/(1-0.5s^-1) Now, I know that the function can also be written as: s/(s-0.5) ...
0
votes
1answer
1k views

RL circuit Step-Response Equation explaination

Im having difficulty understanding the integral calculation in number 4. How does (Response) section of "V/L" convert into "V/R"? Where does exponents go? The last equation is from the textbook. *I ...
4
votes
1answer
143 views

optimal low pass by trial and error?

After opening an old webcam I found a lens with a magnetic socket, which is used for autofocus. A coil moves the lens in and out to adjust sharpness. I recently mounted that feature onto the ...
2
votes
1answer
114 views

Finding some variables in a second-order circuit?

Can any one please help me solving these questions .. I always get a wrong answers :/ The first order circuit is much easier than this one !! This is my answer : for the first time i thought it ...
1
vote
3answers
2k views

Step response and time constant of RC circuit with multiple capacitors

I need to find the step response and the time constant of the given RC circuit: : Can anybody please share the method to solve this circuit? Also, if R1=R2=R and C1=C2=C; then is the step response a ...
0
votes
2answers
275 views

How do you determine voltage output with time graphically?

simulate this circuit – Schematic created using CircuitLab If the step input is to 2V (0 to 2V at t=0, step function) what will be the plot of output voltage be? I'm not able to proceed ...
1
vote
3answers
2k views

Step Response of 2nd Order HPF

In the analysis of a passive 2nd order RC high pass filter, I find that the damping ratio zeta = 3/2 and the Quality Factor Q = 1/3. These values do not depend on R and C. I was under the impression ...
-3
votes
1answer
189 views

RLC circuit step response

In this given circuit, how can we find \$ Vc(t) \$ that is voltage on capacitor? \$ u(t) \$ is step that is 0 when \$ t<0 \$ and 1 when \$ t>0 $. I want to find \$ Vc(t) \$ by 2nd order ...
0
votes
1answer
179 views

How the relationship between input and output is derived in a comparator?

In the slide 6 of the page about propagation delay of a comparator, the time relationship between input and output is as below. However, I am not sure how the function between input and output voltage ...
4
votes
4answers
377 views

How can a transfer function with only real poles show an overshoot in the step response?

I am trying to simulate the circuit below on SIMSCAPE, and its behavior is different in the simulation and in the real world. The simulation shows an overshoot, while the measurements I made do not - ...
1
vote
1answer
364 views

Transient response to rectangular impulse of a cascode common source amplifier

There is a cascode amplifier seen on the picture below. A rectangular pulse with amplitude of 10 mV is sent to the input. Due to large negative amplification gain of the cascode amplifier, output ...
-1
votes
1answer
431 views

Output Voltage RL circuit

I'm having a lot of trouble solving this exercise. Could someone show me their approach in solving it? Could really use the help.
0
votes
1answer
87 views

Implementing a very sharp IIR (125Hz sampling rate, 0.2Hz bandwidth)

I am trying to design a IIR lowpass filter. The purpose of this filter is to get pure DC from noises. The sampling rate is: 125Hz. The bandwidth of the filter: 0.2Hz. I designed the filter with ...