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عدد المساهمات : 18324 التقييم : 33698 تاريخ التسجيل : 01/07/2009 الدولة : مصر العمل : مدير منتدى هندسة الإنتاج والتصميم الميكانيكى
 | موضوع: مشروع تخرج بعنوان An Analysis of Early Stage Prototypes Using Implementation, Look and Feel, and Role الأحد 20 نوفمبر 2022, 9:27 pm | |
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أخواني في الله أحضرت لكم 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.
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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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