PrototypingChapter 13
Prototyping Chapter 13
Product Development ProcessConceptDetailProductionSystem-LevelTestingandPlanningDevelopmentDesignDesignRefinementRamp-Up★★★★★★★★Prototyping is done throughout the development process
Planning Product Development Process Concept Development System-Level Design Detail Design Testing and Refinement Production Ramp-Up Prototyping is done throughout the development process
What Are the Uses of Prototypes?: Learning-answering questions about performance orfeasibility-e.g., proof-of-concept model. Communication-demonstration of product forfeedback-e.g., 3D physical models of style or functionIntegration-combination of sub-systems into system model-e.g., alpha or beta test modelsMilestones- goal for development team's schedule-e.g.,firsttestablehardware
What Are the Uses of Prototypes? • Learning – answering questions about performance or feasibility – e.g., proof-of-concept model • Communication – demonstration of product for feedback – e.g., 3D physical models of style or function • Integration – combination of sub-systems into system model – e.g., alpha or beta test models • Milestones – goal for development team’s schedule – e.g., first testable hardware
What kind of prototypes can be built?Physical PrototypesAnalytical PrototypesTangibleapproximation ofMathematicalmodelofthethe product.product.May exhibit unmodeledCan only exhibit behaviorbehavior.arising from explicitlymodeled phenomena.Oftenbestfor(However, behavioris notcommunication.always anticipated.Often allow moreexperimentalfreedomthanphysicalmodels
What kind of prototypes can be built? Physical Prototypes • Tangible approximation of the product. • May exhibit unmodeled behavior. • Often best for communication. Analytical Prototypes • Mathematical model of the product. • Can only exhibit behavior arising from explicitly modeled phenomena. (However, behavior is not always anticipated. • Often allow more experimental freedom than physical models
Focused vs.Comprehensive PrototypesFocused PrototypesComprehensive PrototypesImplement many or allImplementoneorafewattributes of theattributes of the product.product.: Offer opportunities forAnswerspecificrigorous testingquestions about the: Often best for milestonesproduct design.and integration
Focused vs. Comprehensive Prototypes Focused Prototypes • Implement one or a few attributes of the product. • Answer specific questions about the product design. Comprehensive Prototypes • Implement many or all attributes of the product. • Offer opportunities for rigorous testing. • Often best for milestones and integration