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Questions tagged [systems-design]

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MySQL: How sharding of databases effect ACID property or transactions? [closed]

MySQL (and other Relational Databases) are known to be ACID compliant with respect to transactions. However, when databases are sharded, does the ACID property of transactions break since now ...
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62 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 ...
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1answer
37 views

Designing Block Diagrams For Control Systems

I'm looking for good software to design control systems, and more specifically to neatly design "block diagrams" for control systems. Is there something like that?
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1answer
64 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 ...
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29 views

Method of Hydraulic Resistances (Crane TP 410), how accurate is it really?

A bit vague but a question for you working engineers out there. For a couple of years now I've been designing fluid systems, mostly using Crane's TP 410 as the guiding resource for pressure drop ...
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1answer
178 views

How to design a 4 bit comparator using logic gates?

I'm currently working on a project but I cannot figure out how to make a 4 bit comparator (compare 2 4 bit numbers) If cascading 1 bit comparators makes it easier then that works too
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1answer
43 views

Zeros of a Trransfer Function

I would be grateful if someone could explain me what does the value of zeros of a transfer function tell about the dynamics of the system.
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1answer
61 views

Solar panel actuator control

I'm looking to design a system that can control a solar panel through an electrical actuator for a range of motion of -45 to +45 degrees for maximum solar exposure. The panel will be mounted on a 10 ...
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3answers
72 views

Mapping of vehicle to its horn sound

From the "meep meep" of the smallest scooter to the "BLLLAAAAAGGGGGHHH" of the largest seagoing container vessel, vehicles seem to have horn sounds that, in an auditory way, seem to indicate their ...
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1answer
275 views

How to prevent an object doing a full rotation on a shaft

I basically need a block on a shaft to rotate between 90 degrees (vertical) and approximately 180 degrees (horizontal) counterclockwise on a shaft. I don't want the part to fall below 180 degrees. At ...
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1answer
59 views

Supporting a Chain While Its Size is Varied

I am trying to model a machine that uses eyelets to support a piece of fabric, and this design uses a chain to hold the eyelets in a loop; the links are pictured below. As this machine runs more and ...
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2answers
86 views

Air flowrate required for testing a pneumatic cylinder?

First time designing with pneumatics here. I want to build a continuous use device (with ~30 back and forth actuation per minute) but do not currently have access to a large compressor. Is there a ...
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0answers
71 views

Contact pressure - screw pretension

I'd like to calculate the max contact pressure in the below assembly, just before contact loss between the beam and the wall. The beam is clamped to the wall with a pretensioned screw, and sustaining ...
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0answers
131 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 ...
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0answers
108 views

Thin film sheet-resistance (van der Pauw method)

A well-known method to measure sheet resistance is the van der Pauw method. Looking at Wikipedia they state that the cloverleaf configuration is the most advised. Two questions naturally arise: Why ...
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1answer
322 views

Approximating a Gimbal using Springs and Dampers

I recently asked a question about odd results from a transfer function, and while looking over my work, I conjectured that maybe I'm having a more fundamental problem. Since this is a design problem I ...
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1answer
70 views

Thrust consideration in sprinkler and irrigation systems

In commercial fire sprinkler systems or large farm irrigation systems, is the thrust produced by the water a major design consideration? At what stage in the design process is this taken into account?
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2answers
697 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 ...
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5answers
1k views

How is a mechanical system designed and tested without building a physical model?

I am new to mechanical engineering, although I have a scientific background (postgrad in Mathematics), and I (mostly) code for a living. I have an idea about creating a mechanical device; I envisage ...
9
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1answer
161 views

What is the significance of a diagonal input in a control diagram?

I have seen several block diagrams with diagonal inputs, drawn with an arrow through the block. and others like that (via Google image search) What is difference between this and a typical signal ...
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2answers
207 views

Cutting mechanism for a robot in confined spaces

I'd like to build an exploratory robot that can fit within confined spaces1. As the robot moves along the inside of a 4" pipe, it's likely to encounter some obstacles that need to be removed. ...
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2answers
108 views

Traction mechanisms for a robot in confined spaces

I'd like to build an exploratory robot that can fit within confined spaces1. What traction mechanisms should I consider to propel a robot along the inside of a 4" pipe? The pipe to be traversed will ...