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Engineering Stack Exchange

Questions tagged [systems-engineering]

Systems Engineering is a multidisciplinary field that combines lifecycle planning and risk analysis with core features of other engineering disciplines. It includes understanding physical systems, organizational planning, computer modeling, and information management. It is also commonly used to describe a position in information technology which involves managing multiple technology stacks and overseeing computer networks.

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

I was wondering, from an engineering point of view, for what reasons can too much accuracy in modeling be detrimental? From a scientific point of view it seems like it's almost always a benefit, apart from when you need to take less computation…
TheGuest
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MIMO (multi input - multi output) system decoupling method

A MIMO system with 2 input and 2 output decoupling method to a SISO system is described in many articles and books. How about m*n size transfer functions systems? How can we generalize the method for example to 3*3 or 3*7 MIMO systems? Here is a 2*2…
lahidj
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Is systems engineer an IT profession or an interdisciplinary field of engineering?

The term Systems Engineer has always interested me as it generally involves many different fields of engineering. Systems Engineer - Interdisciplinary The definition I'm familiar with is usually defined as an interdisciplinary profession of…
Ben Winding
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Sketching an engineering system in healthcare

I am about to do a project about engineering systems in a Systems Engineering course. I need to sketch an engineering system in which clinical decision support systems are being used to diagnose patients by a medical doctor/physician. It doesn't…
Benchase
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System Dynamics Modeling

I am trying to model this system but am having difficulties in setting up the equations of motion. This is a simplified model of a motorcycle suspension system, where P is the ground in the image below. In addition, the variable $u$ is the input to…
Josh Pilipovsky
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Is there a term for a circular dependency in system design and engineering

Is there a term used in systems engineering that describes a situation in which the design of one subsystem (call it "A") affects the the requirements for another subsystem (call it "B") while at the same time the design of B affects the…
Mark
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Fan Sensors (Tachometer vs Locked Rotor)

With regard to Fan Sensors, there are two very common methods for detecting whether the fan is doing what it's supposed to or not. Locked Rotor- Detects when the fan is working, or when it has stopped. (on or off voltage signal) Tachometer- Detects…
Erathsmus
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How to design the right input to obtain a desired output for a linear system?

If I have a state-space model, so that matrices $A$, $B$, $C$ and $D$ are known, how can I design the right input $u$, so that $y$ is a desired signal, say, a sine wave with constant amplitude? $$\begin{aligned} \dot{x} &= A x + B u \\ y &= C x + D…
Alessandro
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Frequency Response of a Discrete System

Let's say that I have the following continuous system: $$G(s)= \frac{2}{1+s}$$ I could convert it to a discrete system using for example the Tustin approximation https://en.wikipedia.org/wiki/Bilinear_transform So I replace s with: $$s…
james
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How many Technical Rescue: Collapse Units are there in the US?

In a story about today's Miami bridge collapse, I saw this photo: In the upper left, there is a white box truck which seems to say "MIAMI DADE FIRE RESCUE / TECHNICAL RESCUE / COLLAPSE UNIT," even though the start of each line is obscured by a…
WBT
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What are the Singular Values of a dynamic system and how are they calculated in the *sigma* function in Matlab?

According to Matlab documentation: sigma plots the singular values of the frequency response of a dynamic system. bode creates a Bode plot of the frequency response of a dynamic system. I am reasonably familiar with Bode plots and dynamic systems…
Joe
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Square wave transfer function?

I made a mathematical model (transfer function) of a rlc circuit. I simulated it in matlab simulink with step input and square wave input and observed the result. I can also calculate this system with step input since its transfer function is simple…
Taha
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Mechanical System Transfer Function - Systems Modelling

First of all my english writing is not so good, but I can read it without problems. I've got this mechanical system and I need to get some transfer functions. We made all the force diagrams and got the respective equations, they're eight. Now we…
Erick Navarro
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What is micro-electromechanical systems (MEMS)?

I know definition but how would you explain to complete layik ( as me ) what is MEMS and how it is used. Examples: Silicon nanopore membranes (SNM) have been prototyped from silicon substrates by an innovative process based on MEMS…
SSimon
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Guides on developing procedures and checklists with human factors in mind

I work at a science facility where the software and physical configuration of a huge collection of instruments is modified to conduct some experimental research, and then must be returned to precisely the previous state and functionality. There are…
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