Questions tagged [steady-state]

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Control System how to get rid of Steady-State Error For Ramp Input

I am supposed to get rid of the steady-state error for ramp input for this closed loop transfer function Transfer Function of Closed Loop ^ T(s) Closed Loop ^ Since the closed loop is equivilant to ...
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18 views

Digital Steady-State Error for a Ramp input [duplicate]

Since the stead-state error is given by: Hence X(z) = G(z)*U(z) where U(z) = (0.2z^-1)/(1-z^-1)^2 Which is the ramp input in Z-domain at Ts=0.2. This would simplify to xss = lim(z->1)[(z^-1)/(1-z^-1)...
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2 mesh circuit giving me trouble. (steady-stade, mesh current method, dependent current source)

The task is to find Ic in phasor form. The circuit is in steady sinusoidal state. I used mesh current analysis and I got to that: I have no idea how to keep ...
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1answer
103 views

Laplace Transforms and the imaginary input

When we get an exponential on the RHS of our differential equation (or if we give an exponential input) it's quite easy to solve the equation, but if we provide a sinsusoidal or cosinusoidal input, ...
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4answers
85 views

Is the frequency response of a circuit only valid for steady state (phasors)?

This is my first post. I just finished a course about advanced circuit analysis techniques (the content was taken from textbooks by Sadiku, Hayt and Irwin.) As you know, phasors are used to solve ...
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1answer
73 views

Steady error control system sinusoidal disturbance

Consider the control system closed-loop represented such a block diagram below: Given that: \$G_C(s) = K\$ and \$G(s) = 1/s\$ a) Determine the values of \$ K\$ which the closed-system loop is stable....
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66 views

Finding voltage across inductor in steady state

I am uncertain about the voltage drop I got across the inductor because of its extremely small magnitude compared to the voltage source. Was my procedure correct or were there any flaws in my ...
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2answers
85 views

General expression for non-unity gain feedback system's steady state error with disturbance

Thanks in advance for having a look. I finally have some time on my hands to go back through my controls systems text and I want to understand how the general expression is derived; rather than just ...
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0answers
357 views

Steady state error due to disturbance

I was trying to solve a question from the 2004 GATE IN paper, I solved it this way, Now, the book is giving a different solution, I'm pretty sure my way is correct since they pulled the "standard ...
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2answers
556 views

Do resistors consume reactive power?

I encountered this problem in one of my books where the problem asked to find the power loss in the core of an induction motor. I worked through the problem and I found the current as in the picture, ...
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2answers
75 views

semiconductor equilibrium and steady state

Why should equilibrium imply steady state? For example, there is a process whose rate increases with time and this process can be exactly balanced by an inverse process whose rate also increases with ...
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1answer
292 views

Mesh Current Method Circuit Analysis For AC Transient and Steady State Solution of RL Circuit

Hi everyone, I'm trying to find the currents through each branch for the above circuit using mesh current method (as I don't really know how else to do it), and end up with two simultaneous ...
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2answers
1k views

Transfer function for a Passive Second order Low-pass Filter and to determine the components values

I am working on an assignment about Passive, second order low-pass filters. Cool little things if you get to know them. We are given the placements of the passive components (Inductor(L1), ...
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2answers
83 views

How do I shine an LED when a PIR detects movement but keep it shining until a reset button is pressed?

It's easy even for a beginner like myself to create a PCB where an LED lights up if a PIR chip detects movement, then goes off when movement is no longer detected. And if more movement is detected, ...
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1answer
1k views

PID control achieves zero steady state error with step set points and disturbances?

How can I explain this with proper reasoning? I'm also having doubt understanding why a proportional controller cannot eliminate SSE and how a PI controller eliminates it.
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1answer
230 views

How to find v(infinity)? help please

Can someone help finding V(infinity). Ive gotten V(0+) at 93 V. the second circuit i got is attacked below. Thanks!
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1answer
373 views

Nodal analysis on this sort of circuit

I'm reviewing nodal analysis on sinusoidal steady state circuits which my textbook typically only does mesh analysis on and I can't seem to get to the answer they obtained for an example problem. ...
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4answers
192 views

Steady state response

Could you explain me please what does this question exactly want me to find? Or, how should I start solving ?
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3answers
671 views

Solving for steady state voltages (Op-Amp)

simulate this circuit – Schematic created using CircuitLab so I have this Op-Amp problem. I need to find for the values of V1, V2 and Vout for t > 0. I have this solution but I'm not sure if I ...
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2answers
523 views

Frequency response of an input with a phase (steady state)

I know that, at steady state, the frequency response can be calculated relatively easily from the transfer function and the frequency of the input. So if we have a system described by the transfer ...
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1answer
72 views

Solve the question and give the explanation

I did understand the first part of the question where current is supposed to be 1 A. However I'm in a fix over the second part whether or not to take the resistors in parallel or series. Could someone ...
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1answer
257 views

Steady State Error of Control System

I have a question regarding a control loop system which is subject to disturbance, unfortunately I missed a couple of lectures on the subject and now am scratching my head as to how to do it. The loop ...
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1answer
7k views

Time constant of first order system

I am new to this site, so please bear with me. here is plot of the step response of first order system given Now, the question is to find time constant as well as DC gain so I can find it's transfer ...
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2answers
104 views

Estimate the value of an inductor by its steady state response

I have the following circuit: simulate this circuit – Schematic created using CircuitLab The duty cycle of each sw is 50% and the frequency is 160kHz, at steady state I end with the following ...
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1answer
64 views

Finding L and R in AC circuit

Ammeter readings: A1 = 4A A2 = 2A A3 = 3A Voltmeter reading 24V. Circuit is in AC. I have to find R1,R2 and L. While calculating R1 (R1 = 24V/2A= 12 Ohm) seems to be easy, next steps are not ...
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1answer
338 views

Power absorbed by a resistor in a crossed circuit

The given problem above is asking for the power absorbed by the resistor R given R = 1 Ohm. According to my professor, the two inductors do not cross so I redrew the circuit into the one shown in the ...
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2answers
369 views

LC circuit + diode problem ! (without resistors)

[![][2]][2] What will be steady state capacitor voltage? My hit at the solution: The static resistance of the diodes come into action causing a large current to flow across the diodes ( assuming ...
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6answers
4k views

Step-by-step explanation of how voltage follower reaches steady state using negative feedback

Just one minute! I am not trying to understand what negative feedback does eventually, or why it should be used. I am trying to understand how the circuit reaches steady state, and how, step by step, ...
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1answer
450 views

AC steady state circuit analysis using mesh

I have attempted multiple tries into this circuit problem and I am getting no where. For this question I have to use mesh analysis to find \$V_x\$. \$V_x\$ is across the right branch containing the 3 ...
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2answers
259 views

How does a negative feedback amplifier reach steady state?

I tried to simulate a negative feedback non-inverting op-amp, and got incorrect results. I ran the following time-stepping code in python: ...
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1answer
128 views

Periodic Steady State voltage Buck Converter

What does Periodic Steady state mean with regard to a Buck Converter ? Does it mean the normal operation ? Also, From what I read, the net change in the capacitor voltage in the buck converter is 0....
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1answer
96 views

instantaneous travel

Problem 9.7 of Basic Engineering Circuit Analysis asks one to "Find the instantaneous travel supplied by the source [...]" The word "travel" does not appear anywhere else in chapter 9. I suspect it ...
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1answer
615 views

Steady State Error of controlled loop system

I am trying to calculate the steady state error of the following system but unable to do it. I have used MATLAB and calculated the steady state error to be 0.1128 but don't understand the steps that I ...
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2answers
646 views

Is there a way to find the transfer function from only your input and the steady state response?

I know that a transfer function has the general form of $$ G(S) = Y(S)/U(S) $$ where \$Y(S)\$ is the output and \$U(S)\$ is the input. However, if given the output \$u(t)\$ and the steady state ...
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2answers
317 views

Trying to find steady state

I'm taking my first course in electronic circuits and I'm a little lost when it comes to combining NMOS transistors with capacitors. In particular I am having trouble with finding the steady state for ...
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2answers
1k views

Determine the Steady State current on iR(0+) and voltage vR(0+)

I am currently reviewing some past quizzes for a Circuits problem, and I am a bit confused by the calculations done at part D of the problem: Could someone explain ...
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1answer
638 views

Finding the steady state value of v using nodal analysis

I am currently working on a problem of determing the steady-state value of v using nodal analysis. I understand all the steps up until the step of converting my ...
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1answer
842 views

Determine steady state response

Problem description: The following is what I've worked out: Now, to find the steady state response vo(t), which I assume is just vout(t), I would just have to multiply the transfer function by the ...
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1answer
3k views

What is the general form of a first and second order dynamic system, in laplace and time space?

I have some of the information, but a lot of it is missing and I cant find a clear answer on the web. The general form of a second order dynamic system is: $$\frac{d^2x(t)}{dt^2}+2\zeta\omega_n\frac{...
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1answer
420 views

Op-Amp transient modeling

Imagine I have an op-amp in a standard non-inverting configuration with the gain formula \$G=V_{in}(1+R2/R1)\$. I would like to dynamically adjust this gain by using an FPGA controlled switch to ...