Questions tagged [system]

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3answers
79 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 ...
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2answers
623 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 ...
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2answers
95 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)\$...
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1answer
315 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 ...
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1answer
39 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
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1answer
48 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
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1answer
50 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 ...
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2answers
68 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.
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0answers
12 views

Real Electrical Grid Operation with OPF

So I spent some time reading Power System Analysis & Design by Duncan Glover, Overbye and Sarma and I have a question concerning real power systems operation. If we run optimal power flow once ...
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0answers
27 views

Suggest mini project for feedback and controls that can be simulated in LabView

im an electrical engineering student and Im having problems on my feedback and control subject. all of my proposals for project are being denied. can you please suggest electronics that can be ...
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0answers
68 views

Is there a tool or standard for generating C drivers from a register description

Is there any general standard for generating drivers for register-mapped devices? I believe the vast majority of devices which communicate over I2C/SPI use register access as the mode of interfacing....
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2answers
49 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 ...
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1answer
80 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 ...
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2answers
158 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 ...
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0answers
25 views

Oscillation of a system with 2 degrees of freedom

I have a question regarding a two degrees of freedom system ronsponse, when the U matrix and Q hat matrix are known. My problem is that I don't know how y1 hat and y2 hat are supposed to be calculated ...
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0answers
24 views

Discrete time linear time-invariant system Problem, thinking of the questions for days, plz help!

Sorry guys I know this maybe a easy question for you guys, but I have tried days to figure out what happen but I just don't know how to do for part b and c Here is the question: Consider a discrete ...
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0answers
57 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 ...
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0answers
36 views

FAT32 file system performace

I have a beagle bone black board and I'm using starterware to implement a fat32 file system on SD card. I used an standard sd card(2 GB) in High Speed mode(clock = 50 MHz). First i tried to read/write ...
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1answer
30 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 ...
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1answer
48 views

Hi Pot / Dielectric Pass/Fail Recording

I just graduated last year with an Electrical Engineering degree. Currently pursuing a Masters's Degree, so I am fairly new to design. We have several HiPot Testers we use on the manufacturing line. ...
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2answers
501 views

Difference between pid controller and on-off controller?

I want to know difference between pid controller and on-off controller especially in regards to the operation of both? The following link gives difference between pid controller and on-off controller ...
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1answer
77 views

Effect of three PID gains on each other? [closed]

Do the three PID gains - Kp, Ki and Kd relate to each other or are they independent?
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1answer
62 views

On-off controller open loop or close loop?

Are all On-off controllers used for close loop control systems or can also be used for open loop control systems?
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15 views

How can we simulate an AC position control system in simulink?

The final feedback loop which I got is the following How can I implement this using Simulink?
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1answer
74 views

Working of control system of an elevator? [closed]

I am interested in studying/learning how control system of an elevator works.?How its specs/parameters are controlled or adjusted? Especially rise time and steady state error.?to provide comfortable ...
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1answer
54 views

In practice, what is the difference between the “nominal plant model” and the “plant model”?

I am reading a book on nonlinear control and disturbance rejection, and in many examples, they distinguish between the "plant model" \$G_p(s)\$ and the "nominal plant model" \$G_p(s)\$. They also add ...
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1answer
134 views

Are electrical properties measured using the International system of units (SI)?

What measurement system is used to measure electrical properties such as voltage, current, etc.? I understand the units are defined by SI (at least according to this article), but is that considered ...
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2answers
120 views

Time-invariant system question

I seem to struggle with the notations and concepts used in signals & systems. The book states, given that x2(t) = x1(t-T), x2(2t-5) is equal to x1(2t-5-T). This might be a dumb question, but ...
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3answers
151 views

Can we connect Earth , Neutral and Digital Ground together in electronics system?

In our project has Digital Ground , Earth and Neutral. As per the requirement Digital Ground and Earth ground tied through Bead inductor. Is it advisable to connect Neutral with Chassis and Digital ...
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1answer
55 views

Power system fault analysis

I have been stuck in this problem for identify the fault location. Can anyone show me where to start on this? I'm not familiar with reading the curves so please just give me any hint. Thank you
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2answers
88 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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1answer
37 views

Is the following system time-invariant or time-varying?

I was wondering if the following system is time-invariant or time-varying $$ y(t)=e^{-t}\int_{0}^{t}e^{\sigma}x(\sigma+1)d\sigma$$ I know that it's not causal, and I think it's time-varying because of ...
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1answer
182 views

Why a system is causal if the impulse response is zero for \$t<0\$?

I was reading a definition that Suppose \$h(t)\$ is the impulse response of any system \$Y\$, then the system is causal if and only if \$h(t)=0\$ for \$\forall t<0\$ I know what a causal ...
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1answer
39 views

Contradiction while using the convolution sum for a non-LTI system

In a recent quiz, we were given the following problem: The cascaded LTI systems \$\mathcal{T}_1\$ and \$\mathcal{T}_2\$ respectively have impulse responses \$h_1 \lbrack n \rbrack = \delta\lbrack n ...
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1answer
1k views

Lithium Titanate Battery Pack(LTO)

I saw arguably new and interesting lithium battery which is Lithium Titanate Battery(LTO). It has high discharge and charge current characteristic. Also, it has lower degradation graph when comparing ...
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1answer
79 views

Can a finite state machine represent every possible discrete deterministic system?

Consider the two following definitions: Discrete Deterministic System: a system where inputs and outputs can have only a finite number of values, and is deterministic; Finite State Machine: an ...
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1answer
81 views

How do I convert 1/3 to signed float 8 bit?

The formula is as follows: (-1)^[signed bit] * (1.[significant bit]) * (2^[excess bit -3]) or (-1)^[s] * (1.[f]) * (2^[x-3]) It is a question posed by my signals and systems instructor, hence the ...
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2answers
62 views

total transfer function of a LTI System with feedback

I have calculated the transfer function of such systems many times, but now i feel like I`m going around in circles. I have drawn a few help-signals to help me solve it, but they are dependent of one ...
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2answers
101 views

Nyquist Stability Criteria

Find the stability where: Find the stability: \$ G(s)= \frac{(s+3)(s+5)}{(s-2)(s-4)}; \$ \$ H(s)= 1; \$ I run this code in matlab: ...
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3answers
505 views

z-Transform Methods: Definition vs. Rectangular Rule or Tustin's Rule

The definition of the z-transform is defined as \$z = e^{sT}\$ where "s" is complex frequency for continuous-time systems and "T" is the sample period. Why are rules such as the forward rectangular ...
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1answer
150 views

How to determine u(t+1) - u(t-1) as even, odd or neither?

x(t) = u(t+1) - u(t-1) is given. How do we determine if it is an even or odd signal or neither? Do we plot it out or do we use the condition and convert it. and also, is it even or odd?
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1answer
228 views

PIC 10F200 MCLR PIN as Output

I need To use MCLR pin to make led blinking using this configuration but I conn't write the code for that
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2answers
176 views

Define LTI system from a single input output pair

I am currently studying signals and systems, and am learning about LTI systems right now. I know any LTI system whose impulse response is known can be completely defined through the use of the ...
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1answer
56 views

Hamiltonian-inspired energy function for power grid stability

I'm looking at this paper which proposes an energy function for a 3-bus power system example. I'm trying to replicate the results in the paper but am uncertain about the ...
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2answers
59 views

What is image and video signal ?

Signal is something that carries information. Usually, something is a pattern of variations of physical quantity that can be manipulated, stored, or transmitted by a physical processes. I am wondering ...
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1answer
59 views

Why the distribution network have 4 wires ( not neutral)?

In a real network the distribution lines were 3 lines (ABC). At one pole the lines became 4 lines which are ( ABBC) the phase B split to two lines . Could you please illustrate why they split them to ...
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2answers
128 views

Temperature Controlled System using LM 35

The fan should start to rotate when the temperature is above the threshold temperature and stop when the surrounding becomes cool. But the fan starts rotating as soon as the power supply is connected ...
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4answers
196 views

Can this example prove that bode plot is not correct?

Bode plot implies that for a linear system, if the input is a sinusoidal signal, output of the system will also be a sinusoidal signal with same frequency but different amplitude and phase. Knowing ...
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1answer
162 views

How are op-amp gain vs frequency response curves generated?

I have been wondering this for a while. When we look at the electrical characteristics of a device such as an opamp there is a gain versus frequency plot. I have couple of questions regarding ...
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1answer
72 views

Should I add Capacitance on Switched High Side

Following from this question, which remains open... if I've got a microcontroller switching the high-side power to a sub-system, using a circuit like this: ... should I add bulk and/or decoupling ...