Lesson Plans For Uruguay Ver003
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The document describes four engineering exercises involving shipping a potato chip safely, sorting coins by size, using pulleys to reduce lifting force, and designing a load-bearing structure out of cards. The exercises are intended to teach engineering concepts like package design, sorting systems, mechanical advantage, structural efficiency. Students work in groups to complete tasks like designing a protective chip packaging, sorting washers by size using a mechanical sorter, using pulleys to lift a bottle with reduced force, and building a card structure to support a load.
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![Sort It Out Critical Load Pulleys and Force Ship the Chip Christopher Lester Yvonne Pelham Moshe Kam D.G. Gorham ,[object Object]](https://image.slidesharecdn.com/lessonplansforuruguayver003-090514211147-phpapp02/85/Lesson-Plans-For-Uruguay-Ver003-1-320.jpg)
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One force is gravity, which is the attraction
between the earth and other objects.
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friction, which means that the resistance of the
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The document provides information on the design process for a water level indicator. It begins by outlining the functions and objectives of the water level indicator, which are to accurately show the current water level, be easily attachable to tanks, be water resistant, include an automated filling system and alarm, and be portable and corrosion resistant. Constraints include being sensitive, having a long life, and providing accurate readings. The document then provides a prototype sketch and describes how the system would work with a sensor and circuit to control water flow and alarms. It concludes by discussing testing the prototype over several days to check functionality and make improvements.
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10/8/2014
1
MATLAB Introduction II
Programming and Scripts
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called a script.
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commands and function calls.
• You can run a script by typing its name at the
command line.
10/8/2014
2
Sample Script
• To create a script, use the edit command,
• This opens a blank file named plotrand.m
• Enter some code that plots a vector of random
data:
edit plotrand
n = 50;
r = rand(n,1);
plot(r)
Sample Script
• Next, add code that draws a horizontal line on
the plot at the mean:
m = mean(r);
hold on
plot([0,n],[m,m])
hold off
title('Mean of Random Uniform Data')
10/8/2014
3
Sample Script
• Whenever you write code, it is a good practice to add
comments that describe the code. Comments allow others to
understand your code, and can refresh your memory when you
return to it later. Add comments using the percent (%) symbol.
% Generate random data from a uniform distribution
% and calculate the mean. Plot the data and the mean.
n = 50; % 50 data points
r = rand(n,1);
plot(r)
% Draw a line from (0,m) to (n,m)
m = mean(r);
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plot([0,n],[m,m])
hold off
title('Mean of Random Uniform Data')
Sample Script
• Save the file in the current folder. To run the
script, type its name at the command line:
• You can also run scripts from the Editor by
pressing the Run button, .
plotrand
10/8/2014
4
Sample Script
• You will have something like this.
0 5 10 15 20 25 30 35 40 45 50
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
Mean of Random Uniform Data
Loops and Conditional Statements
• Within a script, you can loop over sections of code
and conditionally execute sections using the
keywords for, while, if, and switch.
• For example, create a script named calcmean.m that
uses a for loop to calculate the mean of five random
samples and the overall mean.
edit calcmean.m
10/8/2014
5
Loops and Conditional Statements
• Now, modify the for loop so that you can view the results
at each iteration. Display text in the Command Window
that includes the current iteration number, and remove
the semicolon from the assignment to sampleMean.
nsamples = 5;
npoints = 50;
for k = 1:nsamples
currentData = rand(npoints,1);
sampleMean(k) = mean(currentData);
end
overallMean = mean(sampleMean)
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• When you run the script, it displays the
intermediate results, and then calculates the
overall mean.
for k = 1:nsamples
iterationString = ['Iteration #',int2str(k)];
disp(iterationString)
currentData = rand(npoints,1);
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window.
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sampleMean =
0.4899
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sampleMean =
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The document provides information about designing a prosthetic arm for a classmate who recently lost part of her arm below the elbow. It outlines the design challenge which is to create a low-cost prosthetic device that allows her to perform daily tasks. The device must meet criteria such as costing less than $40 and weighing less than 3kg. It also describes the performance tasks the device will be evaluated on, including tossing balls into targets at various distances and placing objects in a container. Background research activities are suggested to inform the design such as patent searches, reverse engineering, and user interviews.
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This document provides a final report for a project to design a tennis ball delivery system. It summarizes the design process undertaken by Team S over six weeks. They followed the design process of clarifying the problem, generating concepts, selecting a concept, and prototyping. Their top concept was a ballista design that could transport tennis balls to targets from a starting area while meeting competition requirements. The report details the customer needs analysis, concept development using techniques like c-sketches and a morph matrix, concept selection using a Pugh chart, embodiment design, manufacturing considerations, a bill of materials, and assembly drawings for the beta prototype. It concludes with a post-mortem discussion of lessons learned throughout the project.
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