Table of Contents
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Team Vision for Problem Definition Phase
The project objectives were elaborated in detail to come up with a problem definition which satisfies all parties. Customer interviews were held, and engineering requirements were drafted. House of quality analysis was performed and use case scenarios were drafted.Project Definition
An Inflatable Robotic Hand is a portable, mountable device that can inflate, pick up and move a tennis ball, and deflate remotely. The device will presumably be house in a container mounted on a RC car. This device will utilize some of the same principles, specifically the air muscles, used in senior design projects P14253, P09023, P08023, and P08024. This project will add the ability of inflating out of a small container.The goals of this project are to analyze previous air muscle designs, and other inflatable robot technologies, to identify an opportunity to combine these ideas into one product. The expected results is a functional prototype that can be applied to the task. The prototype must use air for generating actuation forces while resembling a hand with a minimum of three fingers.
Use Cases
Use Case Scenario Flow Chart
.Project Goals and Key Deliverables
- The arm, hand, and vehicle can be remotely controlled by user
- Pick up a tennis ball
- Mounted on an RC vehicle
- Inflate out from a compartment
- Actuation force is produced by air muscles
Customer Requirements (Needs)
Purpose
To decompose the Problem Statement into functions of elements needed to satisfy the customer.Customer Requirements
Authors : Travis Emery, Tim Kremers, Andres
Ulloa, Gebalanage Jayasekera, Lucas Prilenski, Dr.
Kathleen Lamkin-Kennard
Last Edit: 9/3/15
Requirements
Requirement Number | Importance | Description |
---|---|---|
C001 | 9 | Must use air for inflation and actuation forces |
C002 | 9 | Must be able to pick up a tennis ball up to 2 in off the ground |
C003 | 9 | Must resemble a hand or fingers |
C004 | 9 | Must inflate from a container housed on an RC vehicle |
C005 | 3 | Must deflate fully back into the container |
C006 | 9 | Must be remote controlled |
C007 | 9 | Material selection must withstand inflation/deflation cycles without popping or tearing |
C008 | 3 | Use a single controller to control both the robotic arm and the RC vehicle |
C009 | 3 | Prototype and final model must be built with a $750 budget |
C010 | 3 | Move object (tennis ball) from one location to another |
C011 | 1 | Mounted camera for targeting and navigation |
Inputs
- PRP
- Problem Statement
- Customer Interviews
- Art North & Dr. Lamkin-Kennard.
Outputs
Customer RequirementsEngineering Requirements (Metrics & Specifications)
Purpose
Create a contract between the engineer and the customer where indisputable satisfaction of the engineering requirements equates to customer satisfactionRequirements:
rqmt # | Importance | Engineering Requirement | Unit | Target Value | Marginal Value |
---|---|---|---|---|---|
001 | 1 | Air compressor power | psi | > 120 | 100 |
002 | 9 | Air compressor flow rate | scfm | > 0.88 | 0.3 |
003 | 9 | Inflation time | sec | < 2 | 5 |
004 | 3 | Deflation time | sec | < 10 | 15 |
005 | 3 | Inflation arm reach | in | > 6 | 4 |
006 | 1 | Object lift distance | in | > 6 | 4 |
007 | 9 | Hand grip strength | psi | > 20 | 15 |
008 | 3 | Stored air volume | ml | > 1200 | 200 |
009 | 3 | Stored air pressure | psi | < 100 | 80 |
010 | 9 | Number of fingers on robotic hand | units | = 3 | 3 |
011 | 9 | Battery life | min | > 90 | 30 |
012 | 3 | Chassis load weight capacity | lb | < 40 | 120 |
013 | 9 | Chassis surface mount area | in^2 | < 24x24 | 30x30 |
014 | 3 | Arm container cross-sectional area | in^2 | < 6x6 | 8x8 |
015 | 1 | Arm container height | in | < 8 | 10 |
Inputs and Source
- PRP
- Dr. Lamkin-Kennard
- Art North
Outputs and Destination
- HoQ.
Constraints
From Customer Requirements
- Inflation mechanism must use air only
- Robotic arm and hand must fit inside a small container
From Engineering Requirements
- Weight of robotic arm, air compressor, tank, and control systems must not exceed chassis weight capacity
- Must have large enough power source to supply power to the motors, compressors, and control systems
House of Quality
Inputs and Source
- PRP
- Customer Requirements
- Engineering Requirements
- Benchmarking Data
Outputs and Destination
Design phaseDesign Review Materials
Plans for next phase
Home | Planning & Execution | Imagine RIT
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Build & Test Prep | Subsystem Build & Test | Integrated System Build & Test | Integrated System Build & Test with Customer Demo | Customer Handoff & Final Project Documentation