Systems Level Design Review P15010: Arc Wheelchair Swing Maggie Bates, Sean Kennelly, Owen Breese, Elizabeth Cutolo

Agenda Project Background Project Statement Current Market Customer Needs/Engineering Specifications Highlights Updates Since Project Definition Review Systems Design House of Quality Functional Decomposition Concept Development Morphological Chart Pugh Chart Selected Concept System Architecture Feasibility Risk Assessment

BACKGROUND Problem Statement, Deliverables, Current Market, Customer Needs and Engineering Specifications

Problem Statement Our team has been tasked with developing and implementing a mechanism that allows individuals in wheelchairs to experience the sensory stimulation one gets from swinging without exiting their standard or powered wheelchairs for under $2,500 by May Primary Customer: Amanda Bement, Arc of Monroe Day Services Director

Current Market

Customer Requirements

Customer Rqmt. #Importance*CategoryDescription CR29Safety Minimizes distance of the chair off the ground during swinging for safety and size constraints. CR39Safety Supports the weight of the wheelchair and the occupant. CR159SafetySwing will remain at a safe speed throughout use. CR73Versatility Arc facilities department has the ability to transport product from indoor areas to outdoor areas using doorways that range from 32" to 36". CR169BudgetProject total cost will not exceed $2,500

Engineering Requirements

Updates Since Last Review Stakeholder Communication Arc of Monroe Outreach Opened Dialogue with Director, Physical Therapist and Facilities Project Champion Dr. Dan Phillips from Biomedical Engineering Customer Requirement and Engineering Specifications Working towards solidifying with all members of the customer team Higher level understanding of vestibular simulation Safety Regulations What Arc will Accept as Product What resources are available for our use Impact on Budget

SYSTEMS DESIGN House of Quality, Functional Decomposition

Functional Decomposition

House of Quality

CONCEPT DEVELOPMENT Morphological Analysis, Pugh Chart, Selected Concepts, System Architecture, Feasibility Analysis, Risk Assessment

Morphological Analysis/Pugh Chart

Concepts

Pugh Chart

Each Concept was used as Datum. Below are the ranking averages.

Selected Concept

System Architecture

Feasibility Analysis Propulsion System EquationMinimum ValueMaximum Value Mass (lbs)N/A Mass (Newtons)1 lb = Newtons Velocity (m/s)N/A0.51 Time (s)N/A27 Acceleration (m/s^2)a=v/t Force Required (Newtons)F=m*a Force Required (lbf)1 lb = Newtons

Feasibility Analysis Braking System

Feasibility Analysis Safety Considerations 1:16 maximum slope for ramp Objects may not protrude 60’’ wide space of an accessible route Designers must consider optimal layout for experience Turning space for wheelchair shall be located immediately adjacent to swing

Risk Analysis

Risk Analysis (Continued)

SUBSYSTEM DESIGN PREP Project Planning, Subsystem Design Focuses

Project Plan

Subsystem Design Phase Focuses Braking Disc brakes Propulsion Human powered Safety Human powered Frame Action item

Questions?