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Systems Design

Table of Contents 1 Team Vision for System-Level Design 1.1 Plan 1.2 Accomplishments 1.3 Three Week Plan 2 Functional Decomposition 3 Benchmarking 3.1 Microcontrollers 3.2 Motors 3.3 Eye Trackers 3.4 Robotic Joints 3.5 Gimbal Materials 4 Concept Development 4.1 Rack and Pinion with Torsional Movement and Eyelid Concepts 4.2 Linear Actuators 4.3 Rotational Motors 4.4 Ball-In-Socket 4.5 Tensioners for Adjustable Eyelid 5 Morphological Chart 6 Concept Selection 6.1 Pugh Chart 7 Systems Architecture 8 Feasibility: Prototyping, Analysis, Simulation 8.1 Feasibility Analysis - Calibration Technique 8.2 Feasibility Analysis - Inertia, Torque, Force Calculations 8.3 Feasibility Analysis - Speed of Eye Movements 9 Designs and Flowcharts 10 Risk Assessment 11 Preliminary Bill of Materials 12 Design Review 13 Plans for next phase

The goal of the Systems Design phase is to research the Phase I team's designs and propose changes which would further improve performance in order to meet the customer and engineering requirements.

Team Vision for System-Level Design

Plan

Our goal was to come up with a preliminary concept design that satisfied the needs of the functional decomposition derived from the customer requirements. Several alternative concepts were to be made in order to determine the most practical approach to the solution. In addition to benchmarking aspects of the Phase I team's design, feasibility analyses were to be performed on various components of the design.

Accomplishments

The team came up with multiple concepts and selection criteria in which to evaluate them with. Several different hardware concepts were explored and benchmark testing was performed on the OEMI-7 model eye for hands on experience. Further research and benchmarks for our hardware design included linear actuators and methods of getting the device to blink and move successfully.

Three Week Plan

Functional Decomposition

Benchmarking

Microcontrollers

Motors

Eye Trackers

Robotic Joints

Gimbal Materials

Concept Development

Rack and Pinion with Torsional Movement and Eyelid Concepts

Linear Actuators

Rotational Motors

Ball-In-Socket

Tensioners for Adjustable Eyelid

Morphological Chart

Concept Selection

Selection Criteria:

Pugh Chart

Systems Architecture

Feasibility: Prototyping, Analysis, Simulation

Feasibility Analysis - Calibration Technique

Feasibility Analysis - Inertia, Torque, Force Calculations

Feasibility Analysis - Speed of Eye Movements

Designs and Flowcharts

Top Concept

Risk Assessment

Preliminary Bill of Materials

Design Review

Links for:

• System Level Design Review Presentation here

• System Level Design Review Handout here

Plans for next phase

• 3 Week Plan here!

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Home | Planning & Execution

Problem Definition | Systems Design | Subsystem Design | Preliminary Detailed Design | Detailed Design

Build & Test Prep | Subsystem Build & Test | Integrated System Build & Test | Integrated System Build & Test with Customer Demo | Verification & Validation | Final Gate Review