مشروع تخرج بعنوان An Analysis of Early Stage Prototypes Using Implementation, Look and Feel, and Role

مشروع تخرج بعنوان An Analysis of Early Stage Prototypes Using Implementation, Look and Feel, and Role
اسم المؤلف
Lauren R. Hernley
التاريخ
20 نوفمبر 2022
المشاهدات
333
التقييم
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مشروع تخرج بعنوان
An Analysis of Early Stage Prototypes Using Implementation, Look and Feel, and Role
by
Lauren R. Hernley
Submitted to the Department of Mechanical Engineering
In Partial Fulfillment of the Requirements for the Degree of
Bachelor of Science
at the
Massachusetts Institute of Technology
The author hereby grants to MIT permission to reproduce and to
distribute publicly paper and electronic copies of this thesis document in whole or in part
in any medium now known or hereafter created.
Table of Contents

  1. Introduction .7
  2. Background 7
    2.1 Prototype classification 7
    2.2 Additional prototype characterization .9
  3. Methods .9
    3.1 The context .9
    3.2 Evaluating the prototypes 10
  4. Results and discussion .11
  5. Conclusions and future work .24
    References .25
    Appendix A – Prototype questionnaire
    List of Figures
    Figure 2-1: What Prototypes Prototype (Houde and Hill, 1997) triangle prototype classification model . 8
    Figure 4-1: Sketch model prototype of the biodiesel conversion process .12
    Figure 4-2: Sketch model prototype of the biodiesel liquid density separator – an LED sensor and
    receiver mounted in a foamcore channel with two vials of distinct liquids (one of water and one of
    biodiesel) passing through the sensor field 12
    Figure 4-3: Tourné-Do Blade sketch model prototype – a single thin blade on a track profiling a tourné
    cut. It is hand-powered and uses a single pin to skewer and hold the pre-stamped stock vegetable .13
    Figure 4-4: Tourné-Do Iris sketch model prototype – a seven blade iris diaphragm tourné cutting
    mechanism 14
    Figure 4-5: Wilbur Wake Up sketch model prototype – demonstrates the activation of toaster heating
    elements using digital signal triggering .14
    Figure 4-6: CoasterBot sketch model prototype – a remote controlled coaster shaped robot for delivering
    drinks to patrons at a bar. It is laser cut out of acrylic .15
    Figure 4-7: Tourné-Do Longitudinal mock-up prototype – uses a wire cutting mechanism with handpowered rotary motion and two pins to secure the pre-stamped stocked vegetable at both ends .16
    Figure 4-8: CoasterBot mock-up prototype – autonomously controlled by an Arduino microcontroller
    and IR sensors through wall following navigation. The chassis is 3D printed instead of laser cut .17
    Figure 4-9: SushiBot technical review prototype – autonomously controlled by an Arduino
    microcontroller and IR sensors through line following navigation. SushiBot has a 3D printed chassis, a
    custom PCB, and plate detection capability with several response dances .18
    Figure 4-10: Noribo final presentation prototype – the next generation of SushiBot from the technical
    review. Noribo was manufactured in the same way and with the same components as its predecessor,
    but hardware and aesthetic improvements were made 19
    Figure 4-11: The Houde and Hill (1997) triangle model showing the classification of all ten prototypes .19
    Figure 4-12: Houde and Hill (1997) triangle model showing the product cycle progression of CoasterBot
    to Noribo .20
    Figure 4-13: Notional relationship between the number of design questions answered and time. .21
    Figure 4-14: graphs (a) and (b) show the relationship between level of fidelity and time, the relationship
    between level of resolution and time, respectively .22
    Appendix A – Prototype questionnaire .26
    An Analysis of Early Stage Prototypes Using Implementation, Look
    and Feel, and Role
    by
    Lauren R. Hernley
    Submitted to the Department of Mechanical Engineering
    On May 6, 2011 in partial fulfillment of the requirement for the degree of
    Bachelor of Science in Mechanical Engineering
    Abstract
    Identifying the purpose of a prototype is central to making informed decisions about the kind of
    prototype to build. Houde and Hill (1997) propose a model for classifying prototypes according to
    their purpose and the design questions they answer. Since this model was created for user
    interaction design, it has never been applied to physical prototypes on a large scale or to a
    progression of prototypes through the product development cycle. Ten physical prototypes from an
    MIT mechanical engineering senior capstone design course are evaluated according to the Houde
    and Hill (1997) model. With only a few challenges, the model is found to be applicable to physical
    prototypes, providing insight into the nature of physical prototyping, the product development
    cycle, and MIT’s senior design course. In the process, a notional relationship between the
    progression of the product development cycle and the number of design questions answered is
    proposed.
    Thesis Supervisor: Maria C. Yang
    Associate Professor of Mechanical Engineering and Engineering Systems

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