# Tag Info

### From an engineering point of view what are the downsides of a too accurate model?

Beware of overfitting. A more accurate model of gathered data from a system may not be a better predictor of future behavior of a system. The above image shows two models of some data. The linear ...
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### From an engineering point of view what are the downsides of a too accurate model?

The most obvious downside is cost, all engineering projects have a finite budget and spending more money than you need to is clearly a bad thing not to mention wasting time. There can also be more ...
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### From an engineering point of view what are the downsides of a too accurate model?

There are a few reasons. From a purely pragmatic perspective, it's due to time constraints. The requisite time to solve a model increases far, far faster than the level of precision, and whichever ...
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### Is systems engineer an IT profession or an interdisciplinary field of engineering?

Yes, you are correct that there are different definitions of Systems Engineer that vary by company. In fact, different business units of the same company may even use the term differently. A job ...
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### Is there a term for a circular dependency in system design and engineering

If for some reason "circular dependency" doesn't work—it seems clear enough to me—you could also say that subsystems A and B are "interdependent" in their design. These are essentially synonyms and ...
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### Is systems engineer an IT profession or an interdisciplinary field of engineering?

I don't believe there is any conflict but variation in how Human Resource choose to define system engineer positions within specific organizations. It is my opinion that System Engineer has a broad ...
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### Is systems engineer an IT profession or an interdisciplinary field of engineering?

Systems Engineering pre-dates IT. The classical Systems Engineering has roots in aerospace industry (for better, or for worse). Projects were were getting multidisciplinary, and complex, and ...
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### From an engineering point of view what are the downsides of a too accurate model?

An extremely accurate model may require a prohibitive amount of input data. It might be possible to generate an excellent model of weather systems, for example, by taking as input the position and ...

### From an engineering point of view what are the downsides of a too accurate model?

"Too accurate" is not monotonic. It can actually create an illusion of fidelity which makes you think it's worth pumping more money into the simulation. This becomes very important when you're ...
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### Square wave transfer function?

I thought I would expand a little on the answer offered by Karlo. Long story short, I would not try to calculate the analytical time response of a system to a square wave. That would be a serious ...

### Is there a term for a circular dependency in system design and engineering

Another term that would be applicable is mutually reliant.
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### What is micro-electromechanical systems (MEMS)?

One way to think of MEMS is regular mechanical systems, but at a very small scale. Often these tiny systems are fabricated using technology developed for making silicon electronic chips, like ...
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### Mechanical System Transfer Function - Systems Modelling

First off, the equations you have are not correct. For example, if equations 1 and 5 are added it results in $V_1+V_5=0$. The l.h.s of the first four equations should be $V_1-V_5$, $V_2-V_6$, $V_3-V_7$...
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### MIMO (multi input - multi output) system decoupling method

I cannot give you the solution by using transfer functions. However I can give you a general form by using the state space representation. I will do it for a square system, i.e. the number of inputs ...
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### How do I convert this mechanical system into a mechanical network?

I think what you have is correct, provided the friction and spring constants are inverses. I am more comfortable with the force-voltage analogy and would create the equivalent one as follows.
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### Square wave transfer function?

You want to look for the Laplace transform of a square wave. Note: The transfer function $H(s)$ is the ratio of the Laplace transforms of output $Y(s)$ and input $U(s)$: $Y(s)=H(s)\cdot U(s)$ If ...
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### Control System Question - spectra and their degrees of excitation

An impulse has a flat/constant power density for all frequencies. The impulse response of a system can also be used to characterize a system, namely convolution of the input with impulse response, ...
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