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Test Webinar Session

by: Darren Smith

Test Webinar Session Test Webinar

Darren Smith
GPA 4.0

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Lab #2 for FSE 100
Test Webinar
Michaela Humby
Study Guide
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This 11 page Study Guide was uploaded by Darren Smith on Thursday August 25, 2016. The Study Guide belongs to Test Webinar at Arizona State University taught by Michaela Humby in Fall 2016. Since its upload, it has received 4 views.


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Date Created: 08/25/16
Lab 2 Engineering Design Process Name: Darren Smith Team number: 5 Objectives  Apply the Engineering Design Process to create a conceptual design  Create a problem definition statement, design requirements and criteria for judgment.  Use brainstorming techniques and concept combination table to generate design alternatives  Use decision matrix to select a design solution based on design criteria. Lab Procedure In this lab, your team will work through all steps of the design process to create a conceptual design for a self-parking vehicle. You will not be building your vehicle today; it will be built in the future labs. 1. Individually develop a problem statement and criteria/requirements for the problem. Generate some initial ideas. 2. Record progress on the worksheet-1 provided. 3. Now, work as a team to create combined and complete problem statement, requirements, and criteria. Go through all the necessary stages of the design process to come up with a final conceptual design. Even though it’s teamwork, each person should still individually complete the worksheet-2. 4. IF TIME PERMITS Present your final team ideas to the class/or at least the instructor (sketch of the final design, criteria, trade-offs, etc). Other teams/ instructor will critique your design (well- reasoned arguments for improvements) and see if your design meet the requirements. Take the feedback to improve your design. Problem Description Using the material list provided, your team needs to make a Garage self-parking vehicle for a home owner in Scottsdale, AZ. The objective is that she should be able to leave the vehicle 6 inch directly in front of an open garage, and go to her home. And 10inch after she leaves, the vehicle should automatically be able to go inside the garage straight ahead, stop at the right place 7 inch without hitting the walls, and turn off! The dimensions of the garage (scaled down) are 7in x 6in x 10in as shown. The garage is closed, with only the front side open. You’ll be provided with the garage on the final day! But Your vehicle in the driveway the vehicle has to be constructed by the team. You can use as many or as few of the materials provided, but for automation you’ll definitely need a battery, a motor, a distance/obstacle sensor, and an Arduino board, wheels, axles, besides other objects. You will not be building your design today, but it will be built in future labs. The final design must be able to be stored in your assigned locker. The dimensions of the locker are 14’’x22”x28”. The owner is very trendy, she will like the vehicle to look good and be innovative. She is also a conservationist and prefers minimal use of resources without sacrificing the style. Worksheet-1: Design Process (Individually) Problem Definition Statement Design a vehicle that fits within the given storage/garage dimensions, and will be able to move autonomously until it reaches a point fully contained in the target area, where it will stop and turn off by itself. Design requirements Criteria to judge the designs Must be able to navigate/fit into a Weight space with dimensions of 7in x 6in x Speed 10in Appearance Must be able to shut off in its final Power usage position Time/distance from powering off to Stops 2” from the back wall using a stopping distance sensing mechanism in the Fits four people front of the car Simplicity Brainstorming (list of ideas and/or draw sketches) Do the functional decomposition of your vehicle. What parts/functional elements, does the vehicle need to have? Battery, motor, distance sensor, wheels, body, axles, powers off near the back wall of the garage, aerodynamic, goes straight, local intelligence List ideas and/or draw sketches for each/functional element. Battery: AAA, AA, 9V (depends on how much power we want to use/weight we decide on) Motor: 2 gears (a small one connected to a larger one, would be most efficient when looking at speed), 1 gear, 3 gears Sensor: Laser, tiny antennae, echo location, gps Local intelligence: Arduino board, MATLAB programming, Java Script Wheels: rubber, plastic, wood (depends on how much friction is needed vs weight wanted) Body: Balsa, Ply, or other kinds of boards(depends on weight) Axles: Ball bearings, cylindrical metal piece to be clamped on to. Power: MATLAB code to tell when the power needs to shut off, could be at a specified distance Aerodynamic:(see the body shape above) Goes straight: Whisker sensors on the sides with code to correct any misalignment Worksheet-2: Design Process (As a Team) What’s the name of team facilitator for this team today: McKenna Jones Facilitator’s Job: Make sure everyone’s involved and their ideas are heard and considered respectfully. Team’s problem Definition Statement Design a vehicle that autonomously is able to drive into and park itself in a target area. Team’s requirements Team’s criteria to judge the design Park inside a space of 7in x 6in x 10in Does not hit the walls. Drives straight Less than $50 Weight Minimal materials Small Appearance Time taken to park Concept combination table/tree of ideas. List the functional parts of the vehicle and the ideas for each such functional part. Idea 1 Idea 2 Idea 3 Idea 4 Drive Motor Motor Motor Motor System outside in outside in inside inside Front back front back Sensor Laser Antennae Echo location Power AA AAA 9V Chargeabl e Body Style Short and Boxy Windows long/sleek look Material Balsa Ply wood Foam Plastic wood Make a table! Combine the ideas above to generate top three choices for your design. Top 3 Design Ideas (brief description or sketches) Design 1 (“Lambo”) Design 2 (“C-Thru”) Design 3 (“The Cube”) Inside back Laser Chargeable Short and long/sleek look Plastic Crite Weigh Appea Parkin Simpli Total Weig ria t rance g city ht Time Weight 1 1/4 1 1/4 2.5 .091 Appear 4 1 6 1 12 .44 ance Parking 1 1/6 1 1/5 2.4 .087 time Simplici 4 1 5 1 11 .40 ty Total 27.5 Inside front Laser Chargeable Windows Foam Inside back Laser Chargeable Boxy Balsa Wood Interaction and Decision Matrix Interaction Matrix (a.k.a Analytic Hierarchy Process, AHP): Interaction matrix ratings: 1 – equal importance 3 – Moderate importance 5 – Strong Importance 7- Very Strong Importance 9- Extreme Importance 2,4,6,8 – intermediate values. Decision Matrix: Reasons for your rating factors for each design: Criteria Weigh Design 1 Design 2 Design 3 ts (%) Ratin Score Ratin Score Ratin Score g g g Facto Facto Facto r r r (1-10 (1-10 (1-10 scale scale scale ) ) ) Weight 0.091 2 .182 5 .455 3 .273 Appearance 0.44 9 3.96 3 1.32 7 3.08 Parking Time 0.087 5 .435 5 5 Simplicity 0.40 6 3.5 9 Total Score Final Design Drawing and Description 1. Draw a well labeled diagram. Show dimensions and units in the diagram. (FORM) 2. Mention briefly the function of each part. (FUNCTION) 3. Drawing should visually make it clear how the parts fit together (FIT) Table of materials used Material/item name Dimensions (if needed) Quantity Post-lab Questions Team facilitators. You all can discuss the answers to these questions briefly and IF some team work is needed outside the class, please fix a meeting time (online meetings are OK too), and distribute the tasks to the people to do before and during the meeting. 1. What are the qualities of a good ‘problem statement’? (Go through the lecture slides if needed) 2. What is the difference between a ‘requirement’ and a ‘criterion’? 3. What are the qualities of a good ‘criterion’? (Go through the lecture slides if needed) 4. In the first part of the lab, you were supposed to produce your own design ideas. How did that go? Comment on your abilities as an individual contributing to the team? How can you improve if needed? 5. How might your design have changed if your least important design criteria now became your most important criteria? 6. What did you learn about the engineering design process today? Any new, interesting or surprising observations/information? What was the most difficult part of the design process? 7. What skills did you learn/practice today that will benefit you in future classes or an internship? 8. What did you learn about your team, or working in a team today?


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