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Questions tagged [system]

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0
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1answer
32 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 ...
0
votes
2answers
62 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: ...
1
vote
3answers
71 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 ...
0
votes
1answer
42 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?
0
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0answers
24 views

If a control system T.F. has a negative gain K from routh hurwitz criterion, does root locus never cross jw-axis?

If I am considering an open-loop control system defined by: and I attempt to manually determine the root-locus, am I able to automatically assume that the system has no jw-axis crossing if the result ...
-3
votes
1answer
71 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
0
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2answers
18 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 ...
0
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0answers
26 views

Control system for matching purpose

Is there any best practice or model to design a control system aimed at verfying an input against a predefined answer?
2
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0answers
39 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 ...
1
vote
2answers
52 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 ...
0
votes
1answer
53 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 ...
1
vote
0answers
33 views

Question about time invariant systems

So, as per projectrhea Going x[n] -> System -> Delay results in what I would expect. However, going ...
2
votes
2answers
80 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 ...
3
votes
4answers
153 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 ...
1
vote
1answer
68 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 ...
0
votes
1answer
55 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 ...
0
votes
1answer
45 views

Isolating Power in Communicating 5V Sub-systems

I have been plagued by a sensor sub-system which, when connected to my base micro-controller platform, intermittently causes issues that I would categorically associate with power sequencing issues at ...
0
votes
1answer
63 views

Create repeated pole/zero in transfer function---Octave

Say I have such a transfer function with a repeated zero $$ \frac{s^2}{s+2} $$ How do I enter this in Octave as a transfer function? Perhaps this question applies to Matlab as well. If the zero was ...
0
votes
1answer
98 views

Solution for a set of non-linear equations

I am trying to solve the following equations for \$\delta\$ and \$K\$. I have tried Matlab function fsolve, but unsuccessfully. I also tried Wolfram Alpha and, ...
2
votes
1answer
63 views

What is or what “fast-ramping batteries” means at this context?

I'm trying to do a economics report of Battery Storage, but I'm from Brazil, so I have to find especific words used in portuguese to describe certain things in electrical setor. I find this term "fast-...
0
votes
1answer
58 views

Addition of step disturbance to a microgrid state space model

If we are having a microgrid model in the state space form as \$\dot{x} = Ax\$ where \$A\$ is complete system matrix.The matrix \$A\$ includes all the active power , reactive power, load currents, ...
-5
votes
1answer
185 views

Does Solar powered ventilation systems for parked cars really work? [closed]

Do anyone have experience with the efficiency of air ventilation cooling systems for idle parked cars? I know some cars in the more expensive range (Mercs, and BMW's and some Toyota's) have a built ...
0
votes
0answers
22 views

Time-invariant and Time-varying systems

Determine whether the following system is time-invariant or not: \$y(t)=x(t)sin 10\pi t\$ Solution: Given: \$y(t)=x(t)sin 10\pi t\$ \$y(t)=T[x(t)]=x(t)sin 10\pi t\$ The output due to input ...
0
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0answers
42 views

Security System RF Repeater

I have a SimpliSafe security system. The motion sensor in my detached metal garage occasionally loses its connection with the base station. A few hours later, the base station is able to receive it. ...
0
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2answers
70 views

Creating circuit diagrams from verbal descriptions. (Digital Logic)

I have these two descriptions of systems: And I want to answer them correctly (comes from a book with no solutions). For #9, isn't that just going to be an AND gate? We all know the truth table for ...
0
votes
1answer
43 views

Multicard System Grounding

I am building a system with multiple PCB cards. The whole system has a Chassis Ground; connected to a main Power Supply reference. All cards will be powered in reference to Chassis Ground. Each ...
0
votes
1answer
74 views

Looking for an AC current sensor for less than 10A measurements

We are building a voltage and current acquisition system using NI hardware. While voltage measurements are done directly using the NI IO Module, current measurements need a sensor. We have a 100A (...
0
votes
1answer
242 views

Desing Problem with Single Axis Solar Tracking System

I'm second year Electrical-Electronical Engineering student (It's Electrical Engineering basically but naming issues I guess) and my knowledge about circuits is limited to capacitors, inductors, ...
0
votes
1answer
82 views

understanding compensator's transfer function

Referring to the link http://www.analog.com/media/en/technical-documentation/data-sheets/AD2S90.pdf page no 9 states that RDC chip implements a type2 servo loop and the compensation is provided by the ...
0
votes
1answer
254 views

Can anyone please help me with this ETAP Project?

I'm trying to run the load flow study, but instead I'm getting this error. Error 101-01: [Bus 2] Bus base kV is out of 40% range from bus nominal kV. Error 722: [XFMR 1] 2W transformer secondary kV ...
0
votes
1answer
48 views

DC current injected into DR (Distributed Resources)

I was reading the IEEE 1547 standard, and under power quality topic there was Limitation of DC injection which stated "The DR and its interconnection system shall not inject dc current greater than 0....
-5
votes
1answer
362 views

Are transient response, natural response, impulse response same thing? [closed]

According to wikipedia, they are equivalent. Is this correct?
0
votes
1answer
49 views

Form differential equation pair from discrete time system block diagram

I have a discrete time system block diagram. And my question is what is the output y(k) I managed to get what is V(k) $$V(k)=\frac{1}{2}*V(k-1) +U(k) $$ But now i can't form y(k) because ...
4
votes
2answers
272 views

Calculating total torque of stepper motor to lift and rotate some weight

I am going to design a system that would be control remotely. The system consist of stepper motor and solid cylinder rod of about 30 inches long and needs to lift about 0.5 lb/0.223 kg mean up to 90\$^...
0
votes
1answer
173 views

A question on the response of an RC circuit and pole of its transfer function

Below is an excerpt from an introductory level book about poles and zeros: The transfer function of the RC circuit system above for the output voltage is: H(s) = s/(s+10) The book claims that this ...
0
votes
1answer
55 views

How to determine a system is stable without knowing the input?

I was doing some exercises for an upcoming exam and ran into this. I am not sure how to find if the system is stable without knowing the actual input (since Routh array is the only method I'm familiar ...
-4
votes
1answer
171 views

Is sinking mode and open drain the same concept in electronics?

I'm reading a few manuals about I2C , SPI where it says I2C ports are open drain,which I don't know what it is. I know about sinking mode and sourcing mode of ports in electronic circuits.
-1
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2answers
220 views

Oscilloscope sensors (as a system) [closed]

Today in Introduction to Engineering class my teacher picked me to name what components are in the Oscilloscope, in terms of: Input Components, Display Components, Actuators, Sensors, and Controllers. ...
0
votes
1answer
112 views

IEEE 4 machine system: Need help in computing the bus admittance matrix

I need help in computing the bus admittance matrix for the following Kundur's 4 machine 2 area system: ...
0
votes
1answer
126 views

Basic Memory Sytem for ARM-based system

I am studying ARM Architecture and there is a slide which I didn't understand and can't find anywhere on the internet (Google, YouTube) - I've also looked for ARM homepage but they don't display any ...
1
vote
1answer
236 views

Selecting correct current limiting device [closed]

Requirement: During an external test 20W of power will be drawn from my supply circuitry for 1 minute. My mission is to implement a solution that limits the power draw to a level below 20W in under ...
1
vote
1answer
44 views

Impulse response of a LTI TD system

Why the impulse response of this system: \$y(n)=\sum_{|k|\leq3}^{}x(n-k)\$ is: \$h(n)=\sum_{|k|\leq3}^{}\delta(n-k)\$ and the impulse response of this one: \$y(n)=\sum_{k=0}^{+\infty}x(n-k)\$ is:...
2
votes
2answers
210 views

How to roughly know if a electronic scheme will fail soon and protect from it?

I am thinking of a farming project that includes using some board like Arduino, Raspberry Pi or Onion Mega (the list is not exclusive). As the system will work with sensors and support life of its ...
1
vote
4answers
330 views

why does high speed current follows the path of least inductance? and how are the shape of lines are different at low and high speed?

Does anybody know why the lines of electromagnetic field at high speed are bent and exactly following the shape of line, while in the low speed device the electromagnetic lines are in the usual ...
2
votes
2answers
662 views

Unbalanced three phase system with unbalanced phase to phase voltages

I've got quite a problem here trying to solve this 3 phase system (2nd U12 should be U31) and hope you can help me: I'm trying to calculate the single phase voltages and currents for the drawn case ...
-1
votes
3answers
94 views

I need a cheap solution for wireless connection in a parking [closed]

I want to build a parking system "besides some busy streets" that when a car parks in the specified locations, the system charges something like a card that it's exist on the car or something like an ...
0
votes
1answer
4k views

Speaker systems: When is 25 volt used vs 70 volt?

I am doing research on installing a small constant-voltage speaker system using a ten year old TOA BG-115 Integrated Amplifier, and I am trying to determine what the reason is for the existence of 25 ...
-1
votes
1answer
64 views

off-grid data center [closed]

My final project is to design an off-grid solar system for a data center at our university,it's a small one with a 9000 btu air condition for cooling. My question is about cooling !! Most important ...
0
votes
0answers
1k views

addition of ramp functions

Can anyone please provide me any link where I can get a basic idea of standard signal functions( ramp,impulse,step signals).I just want to know the step by step method of plotting of graph of ...
0
votes
1answer
222 views

Stability of impulse response

I'm doing a past paper exam question and I've gotten stuck. The system can be seen in the picture below. Using initial conditions given in the paper, I've calculated the zero input response Yb(t) to ...