Questions tagged [system]

The tag has no usage guidance.

Filter by
Sorted by
Tagged with
3 votes
1 answer
64 views

Finding transfer function from Bode plot

While I know how to find the transfer function from the response graph, I don't know how to find it from Bode plot. What I know about the system: The system is a second order system The system has no ...
user avatar
1 vote
1 answer
66 views

Calling embedded systems vs. calling embedded electronics

I know that the name "Embedded systems" is way more adopted worldwide. However, it always intrigues me since, in engineering, the term "system" is usually used when it is intended ...
user avatar
-1 votes
1 answer
70 views

What is the phase difference between phases in 3phase system, if system becomes unbalanced

Is the phase difference between the voltage phase 120 degree in an unbalanced system if not what how can we calculate it? I will try to explain this a litte more clearly. More specifically in this ...
user avatar
  • 57
-3 votes
2 answers
110 views

Can we say that this system has a memory? [closed]

This unit step response has a memory because of (n+1) but can we say that whole system is not memoryless? If we can, why?
user avatar
  • 111
1 vote
3 answers
159 views

Signals and systems - Find the inverse Fourier transform of a RLC circuit

I was analyzing the following RLC circuit: And applying the Fourier transform on the circuit, I ended up with the following transfer function: $$ H(\omega)=\frac{V_c(\omega)}{V_i(\omega)}=\frac{1}{1+...
user avatar
  • 35
-1 votes
1 answer
70 views

Are comparators essential in a negative feedback model, cybernetic system?

Since there are no cybernetics.stackexchange, I thought it would be meaningful to ask this to people who would possibly understand systems theory and cybernetics. Can there be a system, a negative ...
user avatar
1 vote
2 answers
66 views

Signals and systems - Does y(n-1) affects when I check the system for linearity?

I have the following system: $$ y[n] = \frac{x[n]}{3}+ 2x[n-1] -y[n-1] $$ And I have to check its linearity, but I don't know if i'm supposed to evaluate y[n-1] as if it was a x[n-1], or if I have to ...
user avatar
  • 35
4 votes
2 answers
294 views

Convert three-phase to a single-phase

For a local power grid powered by a 20 kW diesel generator, I want to feed a set of single-phase loads. But I have problem with imbalance. I have equally divided consumers between each phases as much ...
user avatar
1 vote
1 answer
59 views

Derivation of zero state response for LTI system with convolution

Consider this derivation of the zero-state response \$y_{zs} \$ for an LTI system caused by an input \$x(t) \$: - $$\begin{smallmatrix}\begin{array}{r|cc} \text{Input} & \text{Output} & \text{...
user avatar
  • 2,996
0 votes
0 answers
44 views

Linearity and how it affects the response of a system

I've been reading Schaum's outlines for Signals and Systems, and stumbled across the beginning of impulse responses. However, I saw this: Which I understood as the impulse response being "what ...
user avatar
0 votes
1 answer
62 views

Laplace transform, How to calculate the output of a system to a infinitely extending signal?

I need to calculate the output of a system given as \begin{align*} H(s) = \frac{s}{(s+1)(s+2)} \end{align*} For an input \begin{align*} e^{3t} \ \ \ \ \forall \ t \end{align*} I currently ...
user avatar
0 votes
1 answer
144 views

Second order transfer functions, intrinsic time constants and responses

Say I have the following circuit: - simulate this circuit – Schematic created using CircuitLab This circuit has the following transfer function \$H(s) = \frac{V_o(s)}{V_{in}(s)} = \frac{\frac{1}...
user avatar
  • 2,996
1 vote
0 answers
142 views

Carry-select adder - Time calculation

a) Suppose a binary pick-up adder (carry-select) of 32-bits, comprising 4 sub-sections adders spreading carry of range 8 bits. Show the values ​​obtained internally in the circuit of this adder to ...
user avatar
0 votes
0 answers
46 views

Why ROC is important in Laplace transform

For example there is a function 1/s where ROC is Re(s)>0, but why is this important and what we can see from ROC? What is the practical reason we calculate ROC, when it doesn't contain poles?
user avatar
2 votes
5 answers
2k views

Does the DC component of any signal also carry information?

Every signal carries some types of information in it. Mathematically we Know from Fourier series that these signals can be represented as a sum of its DC component and all the harmonics of fundamental ...
user avatar
  • 1,124
0 votes
2 answers
43 views

Confusion in proportional controller

I was revising proportional controller from here and got confused in following figure which is common in many books also. Since output of controller is proportional(by factor K) to error function but ...
user avatar
  • 1,124
13 votes
5 answers
2k views

How do power grid systems supply power to new loads coming online?

I know that in a power system there are no energy storage elements. Due to this, as soon as power is generated by the generators it is transmitted to the end user where the power is utilized. Say a ...
user avatar
  • 143
0 votes
0 answers
32 views

Charaterization of waveguide to coaxial adapter

I'm trying a method to characterize a high frequency waveguide to coaxial adapter( 2-port network). For this, I use 3 adapters A1, A2, A3. After a TRM calibration, I measure A1 connected with A2 with ...
user avatar
  • 1
0 votes
1 answer
60 views

Improve system response by looking at transfer functions

This question is quite long - I apologize for that. I am working on a car in a course project. In order for the car to drive efficiently, it has to have a \$\lambda \$-value of \$\lambda=1.3 \$ for ...
user avatar
  • 2,996
0 votes
1 answer
50 views

What does hₖ[n] mean here?

Is the impulse response different from the output y[n]? Is the input x[n] all the delta function at different values of n? From Signals and Systems by Robert Oppenheim, Linear Time Invariant systems
user avatar
1 vote
2 answers
138 views

How to derive transfer function for DC feedback coupled transistors?

I am not sure where to start deriving the transfer function of this circuit. If I do a control diagram then I need to know the initial values to convert the system into the Laplace domain, so I guess ...
user avatar
0 votes
1 answer
78 views

Amplifier gain in budget links

How does an engineer calculate the required power/low-noise amplifier gain after she/he is provided with the link budget of the system?
user avatar
0 votes
1 answer
89 views

Confusion regarding finding closed loop transfer function and damping constant from open-loop transfer function

I have second order transfer function $$ G(s) = \frac{1.247}{s^2+9.76s+23.8}$$ G(s) is in the forward path of a unity feedback system. How do I find the closed loop transfer function and damping ...
user avatar
0 votes
0 answers
100 views

Is the system linear, time-invariant and causal? Does the decomposition property hold? Sallen Key bandpass filter

I have this ordinary Sallen Key bandpass filter: - simulate this circuit – Schematic created using CircuitLab I'm being asked, if the system is linear and/or time-invariant and/or causal. ...
user avatar
  • 2,996
1 vote
0 answers
75 views

What is wrong with my Simulink model of a first order Delta Sigma Modulator?

I'm trying to design a Delta-Sigma Modulator for frequency synthesizer applications and am (just right now) figuring out how to properly configure a first order DSM in Simulink. I've made a few small ...
user avatar
  • 21
2 votes
2 answers
370 views

How do causality and stability affect the response of a linear time-invariant system?

Suppose that there's a linear time-invariant system with the following transfer function: $$H(s) = \frac{1}{3(s-2)}-\frac{1}{3(s+1)}$$ If the system is causal and stable, I can determine \$h(t)\$ by ...
user avatar
  • 123
0 votes
2 answers
46 views

Memory Selection and NOT Gate in Embedded System

I'm currently studying Embedded Systems and in the topic of drawing a schematic for the address of a microprocessor (16bits address x 8 bit data (64Kbytes)) with 1 ROM 32Kx8 and 1 RAM 32Kx8, I simply ...
user avatar
1 vote
1 answer
63 views

What is the controlled variable in this particular case?

I have a question, maybe you can help me because I am not sure of the correct definition. As an example I have a plant with a measured output y in a closed loop system. But as the feedback variable I ...
user avatar
  • 21
1 vote
0 answers
43 views

Linear system question

I have been struggling with this linear system's question. [] I have arrived at a solution, but i do not think my solution makes sense.
user avatar
0 votes
1 answer
108 views

Early Deadline First (EDF) scheduling in real-time systems feasibility test proof

I am trying to prove Theorem 6.2 on page 127 of the book Real-Time Systems by Jane W. S. Liu: http://www.cse.hcmut.edu.vn/~thai/books/2000%20_%20Liu-%20Real%20Time%20Systems.pdf It is based on Early ...
user avatar
  • 99
0 votes
0 answers
82 views

What is the black two-leg sensor?

This is part of the Auto Sun Tracking Pump. It is attached to the agriculture solar system but damaged and I want to replace it. I don't know the black two-leg sensor.
user avatar
  • 9
0 votes
1 answer
36 views

4*4 reverse matrix code in matlab wich has variables

Here is the system of which I have found the state space equation. I need to get the transfer function. [SI-A] is a 4x4 matrix and it's so hard to get the reverse ...
user avatar
2 votes
1 answer
133 views

Problem in selection of state variables of inverted pendulum

I was reading about controller design from the book Control System Design, An Introduction by Bernard Friedland. In one of the examples of controller design for an inverted pendulum, the author ...
user avatar
  • 1,124
0 votes
1 answer
396 views

Corelation between P0.1dB and IIP3

There is a corelation between IIP3 (third-order intercept point) and P1dB (1dB compression point) as shown below. $$P1dB = IIP_3 - 9.6dB$$ Is there a corelation between P0.1dB (0.1dB compression point)...
user avatar
0 votes
1 answer
91 views

Why are state variables sufficient to describe the exact future temporal dynamics of a system

I'm confused about state-space state variables. How come knowing the initial conditions with the input 'determine completely the future behavior of the system'? From such knowledge, I can only ...
user avatar
0 votes
2 answers
64 views

System identification

I started learning control systems and I have a question about system identification. Let's say I want to identify DC motor. I want to control speed using a PID controller. I can model my system based ...
user avatar
  • 45
0 votes
0 answers
86 views

Emulation of a custom system based around an SAMD51

I am designing a system based around the samd51 chip. It will have an SPI screen and the buttons will be read through a shift register. Also, there will be an SD card for IO. I need a way to emulate ...
user avatar
0 votes
3 answers
224 views

Generation of triangular wave from passive networks

I wanted to generate a triangular wave from a pure sine wave using only passive networks (RLC circuit only.) I wanted to realize such a network and at first I thought maybe the Fourier transform (of ...
user avatar
  • 1,124
8 votes
2 answers
676 views

Is there an English word for the output response of a non-minimum phase system?

I've noticed in some French language control courses they have a word for the initial part of the response of a non-minimum phase system. They say it has "un départ malin". I looked up ...
user avatar
  • 213
0 votes
2 answers
118 views

Derivation of y(t)=H(s)x(t)

\$x(t)=e^{st}\$ is the input to the system. \$x(t)\$ is not going to present in this question anything else than the exponential \$e^{st}\$ where t is time and s is a complex valued parameter. \$H(s)\$...
user avatar
  • 151
0 votes
1 answer
325 views

How do I make this electronics system of circuits and batteries work?

I have this: where Battery #2 will connect with pins (like wireless earbuds) to Battery #1 so Battery #2 can get charged (from Battery #1). So Battery #2 can be easily disconnected and connected to ...
user avatar
1 vote
1 answer
106 views

zero-sequence circuit of the three phase transformer question

Although I have tried a lot, I cannot draw the zero sequence circuit. Can you help me? this is my try.I could only come to some
user avatar
  • 21
0 votes
1 answer
52 views

I need help with Fourier Series

I am having problems analyzing this sketch of a continuous Fourier series as it can't find a single known function
user avatar
1 vote
1 answer
53 views

Software for system architecture capture

I work as an electronics engineer and I'm starting to create a new device. This device will be significantly more complex than any project i've undertaken so far and will require close interaction ...
user avatar
  • 11
2 votes
2 answers
168 views

A safety relay systems circuit

Can someone help explain the operation of a safety relay system. I know that they can be connected to e-stops for emergency stops but I don't understand the relays and how they operate.
user avatar
0 votes
2 answers
97 views

soc clock domain questions

Those days there have so many different protocols in the soc which basically means different clock rate. In a Soc system, there have CPU which run at some clock speed, then there have memory(dram) to ...
user avatar
0 votes
1 answer
137 views

How do I get the transfer functions of each channel for a control system?

Consider acontrol system with the following transfer matrix: \$G(s)=\begin{pmatrix} G_{11}(s) & G_{12}(s)\\ 0&G_{22}(s) \end{pmatrix}\$ and suppose I want to get the transfer functions ...
user avatar
  • 103
2 votes
2 answers
480 views

Nyquist stability criterion for positive feedback

it is known that the stability of a system with negative feedback may be analized through the Nyquist stability criterion, which is based on observing the number of turns around the point (-1;0) in ...
user avatar
  • 3,276
1 vote
0 answers
64 views

Simple Stability and Feedback

I have a question, my book says that for the system in this picture: If the system has G(s)*H(s) with a module of 1 (0dB) and a phase of -180°, the system is in Simple Stability, so it is like in ...
user avatar
  • 187
0 votes
1 answer
54 views

How can an IAR ODE system be dynamic and LTI at the same time?

I'm currently studying a course of systems and signals. we talked about IAR ODE systems and their properties, and I have a question about something I don't quite get - how can an Initially at rest ODE ...
user avatar