Transcript Document
Design Process Help! I don’t know where to begin on my robot project! Design Process: Ideal Identify the Problem Define the Requirements Generate Concepts Evaluate and Select Concept Detail the Design Prototype and Evaluate Design Process: Real Identify the Problem Define the Requirements Generate Concepts Evaluate and Select Concept Detail the Design Prototype and Evaluate Robot Project Design Process Define the Problem Generate Concepts Select Concepts Build and Test How do I come up with ideas? Concept Generation • Internal search • Brainstorming (group) • Brainstorming (individual) • External search • Previous ME2011 robots (YouTube) • Web search • Ideas search outside ME2011 • • • • • • Patents Trade magazines Application notes Existing products (reverse engineering) Customers Key opinion leaders GOAL: Find all of the ideas! Exercise Pair up and brainstorm for 60 seconds on the following topic Record each idea in 6 words or less Goal: Twice as many ideas as the pair next to you “Robot concepts that use this 6 ft length of string” How do I choose among my ideas? Concept Selection • Narrow the choices (not necessarily down to one) • Iterative • Decide on selection criteria • Hard (size, weight, cost….) • “Soft” (know how to do it, finish on time…) • Evaluate against the criteria • Document process….to defend later ****************** ***** ********** ** Selection Methods • Multi-voting (green dot/red dot) #1 #2 #3 #4 #5 Criter 1 ++ + 0 -- -- Criter 2 0 0 0 - -- Criter 3 - 0 0 0 0 Criter 4 ++ - 0 - - • Selection matrix • Un-weighted • Weighted Exercise In the next 2 minutes, write down six ideas for an ME2011 robot Record each idea in 6 words or less on your selection chart Challenge: Record another 4 ideas on the back of the chart Exercise: Fill in the chart for your concepts. Work with a partner. Concept selection for robot project CAN OBTAIN PARTS CAN BUILD 1. 2. 3. 4. Scoring: 1 = weak, 2 = average, 3 = good LOW COST I’m overwhelmed; how can turn the Robot project into manageable chunks? Functional Decomposition • Break design problem into smaller parts • By function, by task, by technology Robot Mechanical Electronics Software Technology breakdown Drink Mix Machine Functional breakdown Meter Liquids Direct Flow Mix Take-Home Messages 1. 2. 3. 4. 5. Know the design requirements Generate many ideas Avoid running with first idea Have a selection process Break the project down into chunks