Questions tagged [system]
194 questions
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Gain margin and Phase Margin Physical Meaning
I have been trying to understand the physical concept of Gain and Phase Margin.
What I understand about this is that a relative comparison around the critical point \$(-1,0)\$, which when converted to magnitude and phase form turns out Magnitude =…
Fawaz
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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 power system is stable at the moment (energy…
Sandaru Akalanka
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12
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What are the .NET Micro Framework ready systems available?
Once I heard of Netduino I began to wonder which other systems would provide the same features:
Processor and Memory Micro .NET Framework ready
USB interface
Cheap
Portable
Jader Dias
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12
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How to determine a system is stable using pole zero analysis?
To my knowledge, as long as the poles of the transfer function are in the left half plane, then the system is stable. It is because the time response can be written as "a*exp(-b*t)" where 'a' and 'b' are positive. Therefore, the system is…
Superhero
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What is the significance of the standard form of 1st and 2nd order transfer functions?
A standard form of a first order differential equation is:
(1) $$\tau \frac{dy}{dt} + y = k * x(t)$$
The laplace transform of this:
(2) $$G(s) = \frac{Y(s)}{X(s)} = \frac{k}{\tau s+1}$$
but sometimes it is given as
(3) $$H(s) = \frac{1}{\tau s +1} =…
Blue7
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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 malin and it means different things in English, for…
Bill
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Control theory: is there any actual application for D in ABCD matrix?
Recall that a LTI state space of a dynamical system is given as:
Is there any actual purpose for D in the output equation?
If D was not zero, it would mean that the output is "directly" dependent upon the input. Does anyone know any system that…
Fraïssé
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How does a zero in transfer function affect the bandwidth of a system
Suppose we have a system with the closed-loop gain:
\$\displaystyle G(s) = \frac{\omega_n^2}{s^2 + 2\zeta\omega_n+\omega_n^2}\$
Which is the default two-pole system closed-loop gain. Let's also assume that bandwith \$\omega_0\$ is defined with…
Vidak
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Failures in electronics systems
Why do electronics systems stop working? What kind of parts are almost certain to fail after a certain amount of use? Can some keep going for centuries? In data sheets I don't think I've ever seen an estimated lifespan with the exception of LEDs,…
Jodes
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Meaning of causal signal
What exactly does causal signal mean?
Causality,as I see it is a property of a system wherein the output at PRESENT is dependent ONLY on PAST and PRESENT values of input.Here we have a reference of Output signal Time to define PAST & PRESENT for an…
kryptoknight
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How to mass-produce a electronic system assembled by me?
"Practically speaking", given I developed a electronic system (in my case with the Arduino board), what are next steps to make in order to produce and market that system (in my case, regardless of licenses since those seems to be OK for my Arduino…
Backo
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5
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How to measure three resistors in a triangle
I have three unknown resistors arranged in a triangle (a delta) and need to determine one of them, which is on the order of 100x larger than the other two, in a measurement circuit. I'm wondering if there is a known best way to go about this…
usethe4ce
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5
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Wiring a Arduino to a 12v TTY
I have a DSC-1555 Alarm system that I am trying to wire up to an Arduino-Mega the problem I've run into is that the DSC uses 12v TTL to the Console and the Arduino uses 5v TTL.
I was just guessing to use some resistors but I want to double check…
Aaron
4
votes
3 answers
Book on memory from hardware perspective?
Is there a good book that talks about memory (SDRAM, DDR, NVRAM, flash etc) from a hardware/system perspective? Most of what I've been able to find deal with memory at the transistor level. I am looking for overview of the different types of…
Vineeth
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Definition of a System
A mathematical operator is generaly a mapping between a domain set of functions and a range set of functions.One example is the derivative operator L ( L[f] = f' ) for example.
Can i say every representation of a electronic/electrical system (…
nerdy
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