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.

Filter by
Sorted by
Tagged with
6
votes
1answer
200 views

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 ...
4
votes
1answer
109 views

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? $$\...
0
votes
0answers
23 views

Best way to go about “HiPot” testing setup

What is the best way to set up a dielectric strength test? I am planning on using two threaded copper rods for adjustable movement that will receive the voltage. In between the two rods will be the ...
1
vote
0answers
30 views

Reference book for hydraulic systems design

I'm looking for a good reference book on the topic of fluid dynamics/hydraulics systems engineering. I'd like a reference for simlpe/estimate calculations on things like major losses (pipes), minor ...
0
votes
1answer
58 views

What are the drawbacks of inceasing the bandwidth of the system?

I have a doubt concerning the closed loop frequency responce of a control system. Suppose I have the following situation: in which is plotted the frequency response of a system with different ...
1
vote
0answers
24 views

Calculating reliability of a parallel redundant system

I'm trying to calculate the reliability of a system that has proven to be a bit more complicated than I thought. Here is the block diagram for the system: Every single component in this diagram is a ...
0
votes
1answer
45 views

Problem finding value of the gain such that the closed loop is stable

I have the following transfer function: $G(s)=\frac{-s^3 +s}{s^4+3s^3+2s^2}$ and this is a transfer function of a plant with two poles in the origin. So I want to desing a controller with two poles ...
1
vote
1answer
26 views

Problem with RHP zero in transfer function

I have a transfer function with a RHP zero in $s=+1$, and I am trying to show in Matlab thath this limitation is present. In particular, initially I had a MIMO system, which I decoupled and then I ...
-1
votes
1answer
42 views

Doubt on bandwidth of a control system

Consider this image of a loop shaping design: here which is the bandwidth of the system? I have a doubt because until now I have considered as bandwidth to the system the one of the complementary ...
-1
votes
1answer
28 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 ...
1
vote
1answer
37 views

Doubt on zero pole cancellation

I am looking at a control system which has an unstable pole in the process. The transfer functions of process and controller are the following: ...
1
vote
0answers
45 views

Why a zero too close to the imaginary axis gives bad berformances?

I am studying control systems, and I have found that if I consider I control scheme where I filter the reference , if the zero of the pre-filter is too close to the imaginary axis, we have a ...
0
votes
0answers
47 views

effect of coupling in MIMO systems

I have a MIMO system with a 2x2 transfer matrix, for example consider: $\begin{pmatrix} \frac{2}{s+1} & \frac{1}{(s+1)(s+2)}\\ \frac{1}{(s+1)(s+2)}&\frac{2}{s+2} \end{pmatrix}$ I would ...
0
votes
0answers
68 views

Help with Engineering Mathematics, Struggling to determine coefficients using methods detailed in this research paper

I am struggling with a curve fitting calculation below. the part I am stuck with is arguably the simplest part, which is determining the coefficients $\\K_3$ and $\\K_4$. It seems like it should be ...
0
votes
1answer
142 views

How to model projectile motion using dynamical system matrices

I'm trying to figure out how to model projectile motion which can be defined using a simple [quadratic] equation which defines projectile parabola: $$y = y_0 + v_{0y}t - \dfrac{1}{2} gt^2$$ I came ...
-1
votes
2answers
43 views

What is the engineering way to describe a factory / manufacturing plant system in a formel and mathematical way

I am interested in mathematically describing as well as formalising a manufacturing plant so that other people in the engineering field understand how the system works. I am not from the engineering ...
-2
votes
1answer
46 views

In what way the object-oriented methodology model an information system? [closed]

Answer briefly how the object-oriented methodology transforms an information system. I really do not know how to answer that question. I know what is an information system ("System capable of ...
2
votes
1answer
23 views

What are the necessary qualitative criteria for the existence of limit cycles

The literature on the existence of limit cycles is replete with complex and abstract mathematical analysis. Or for specific systems of specific structure, specific mathematical criteria that determine ...
3
votes
2answers
100 views

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/...
3
votes
1answer
2k views

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 ...
2
votes
0answers
111 views

How do I calculate the velocity of the piston?

I have a system with a motor connected to the trapezoidal lead screw. The lead screw is connected to the tube which is connected to the piston. The piston has to pump 1000cc oil against a pressure of ...
2
votes
3answers
97 views

Harmonic systems, system linearity

I have a bucket full of water with a hole in bottom, lying on a spring like in the picture I have attached. Is this system considered to be linear or not?
3
votes
0answers
113 views

How many Technical Rescue: Collapse Units are there in the US? [closed]

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 ...
2
votes
0answers
31 views

How do I perform RM scheduling?

The question says, "Perform RM scheduling for the following task set: T1=(2, 0.5, 4), T2=(3, 1, 10), T3=(5, 1, 10) and T4=(7, 0.45, 15)". Here the standard notation (Period, execution time, relative ...
24
votes
11answers
8k views

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, ...
2
votes
1answer
88 views

How do I hook these components together to get my desired functionality?

I have a big button http://store.2xlnetworks.com/thebigbutton/ and a display counter Microframe Model 265 https://www.microframecorp.com/d0265-6-digit-rugged-computer-controlled-display . I want the ...
10
votes
1answer
2k views

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 ...
3
votes
2answers
2k views

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 ...
1
vote
0answers
228 views

How many controllers of output or state are available? [closed]

Im in daily basis see a lot of controller. Sliding mode PID. Fuzzy, adapttive. Controller based on lyapunov etc. But how many are they that are actually in use in industry and when do we use them? ...
1
vote
1answer
90 views

Control System Question - spectra and their degrees of excitation

What is the difference between impulse, step and sum of sinusoids signals in terms of their spectra and their degrees of excitation ?
1
vote
1answer
45 views

What is the name of my feedback procedure in control system that I am using?

I have created a self balancing robot. It uses PID control to control its pitch angle and gets the feedback from gyroscope and accelerometer. But I have not used any sensor to feedback the ...
2
votes
1answer
216 views

How do I convert this mechanical system into a mechanical network?

How do I convert this into a mechanical network? like a circuit network. my attempted work is this: is this schematic correct?
8
votes
0answers
163 views

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 ...
2
votes
1answer
815 views

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 ...
1
vote
2answers
676 views

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 ...
2
votes
1answer
2k views

What kind of signal is the signum function? A power signal or an energy signal?

I'm studying "signals and systems". We can indentify two kinds of signals: power signal and energy signal. The definitions are: Energy of a time-continous signal $$ E_x = \int_{-\infty}^{+\infty}{|x(...
9
votes
5answers
3k views

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 ...
4
votes
1answer
1k views

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 ...
5
votes
2answers
704 views

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 ...
2
votes
1answer
572 views

Simulation of First Order System (Matlab & Simulink)

Yesterday, I tried to find constants $k_1$ and $k_2$ for the following system: $$\frac{\mathrm d RH}{\mathrm dt}=k_1+k_2(RH_{ext}-RH).$$ Now, I have some first computations for $k_1$ and $k_2$ and ...
1
vote
1answer
220 views

Parameter Estimation for First Order System

I would like to get a simple estimation of the parameters for a humidity chamber system. The humidity chamber has one constant inflow ($k_1$) and and outflow which depends on the humidity of a ...