Steer-by-Wire System Gear Box Design
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Elizabeth Dick, Vijay Patel, Trish Pham, Elizabeth Dick, Vijay Patel, Trish Pham, Breanne Walters, Josh Collins Breanne Walters, Josh Collins Dr. Sohel Anwar-Project Sponsor Dr. Sohel Anwar-Project Sponsor FALL 2007 FALL 2007 Steer-by-Wire System Steer-by-Wire System Gear Box Design Gear Box Design
description
Steer-by-Wire System Gear Box Design. Elizabeth Dick, Vijay Patel, Trish Pham, Breanne Walters, Josh Collins Dr. Sohel Anwar-Project Sponsor FALL 2007. Presentation Outline. Project Goal Background Customer required criteria Motor Selection Final Model Model Analysis (Static and Dynamic) - PowerPoint PPT Presentation
Transcript of Steer-by-Wire System Gear Box Design
Elizabeth Dick, Vijay Patel, Trish Pham,Elizabeth Dick, Vijay Patel, Trish Pham,Breanne Walters, Josh CollinsBreanne Walters, Josh Collins
Dr. Sohel Anwar-Project SponsorDr. Sohel Anwar-Project SponsorFALL 2007FALL 2007
Steer-by-Wire System Steer-by-Wire System Gear Box DesignGear Box Design
Presentation OutlinePresentation Outline
Project GoalProject Goal BackgroundBackground Customer required criteriaCustomer required criteria Motor SelectionMotor Selection Final ModelFinal Model Model Analysis (Static and Dynamic)Model Analysis (Static and Dynamic) ConclusionConclusion Recommendations for the futureRecommendations for the future AcknowledgementsAcknowledgements QuestionsQuestions
Project GoalProject Goal
•Convert rack and pinion system to operate two motors for steer-by-wire steering system
Current Motor Interface
BackgroundBackground
Steer-by-WireSteer-by-Wire Power SteeringPower Steering
CustomerCustomer Design Design CriteriaCriteria
Force to move to rack [N]Force to move to rack [N] 5000/40005000/4000
Functionality [%]Functionality [%] 100/75100/75
RedundanciesRedundancies 2/12/1
Motor response time [ms]Motor response time [ms] 85/10085/100
Deflection during actuation [degrees]Deflection during actuation [degrees] 0.5/0.60.5/0.6
Clearance [in]Clearance [in] 0.5/00.5/0
Functionality during single point failure Functionality during single point failure [%][%]
100/90100/90
Backlash [in]Backlash [in] 0.25/10.25/1
Noise level [db]Noise level [db] <50/>65<50/>65
Suitable for laboratory Suitable for laboratory 100/85100/85
Distance from bottom of fixture [in]Distance from bottom of fixture [in] >3/<2>3/<2
Weight [lb]Weight [lb] <40/>50<40/>50
Volt [V]Volt [V] <80/>80<80/>80
Motor SelectionMotor Selection
Motor Motor RequirementRequirement
Selected MotorSelected Motor
Torque2 Nm Continuous3 Nm Max.
Input Signal PWMSpeed 2500 rpm Max.Current 20 A Max.Voltage 80 V Max.Power 1 hp
Motor Performance Requirements
2.5 Nm Continuous, 8Nm Max.,
2500 rpm, 10.3 A, 80 V, 1.7 hp
Final Model DesignFinal Model Design
Static AnalysisStatic Analysis
Dynamic AnalysisDynamic Analysis0.098425 [m], shaft length
Ø.03 [m], shaft dia.
1:1 Gear Ratio
2 plcs
Servo Motor1.5 [N m]Torque2 plcs
Shaft connectingGearbox w/Rack and Pinion
Product Evaluation Product Evaluation SummarySummary
Note
Backlash and Noise
Level Pending
Prototype Build
ConclusionConclusion
Recommendations for Recommendations for the Futurethe Future Project turn-overProject turn-over Design goals and customer Design goals and customer
design criteria need to be defined design criteria need to be defined clearclear
CommunicationCommunication
AcknowledgementsAcknowledgements
Dr. Sohel Anwar – Project SponsorDr. Sohel Anwar – Project Sponsor Dr. Jie Chen – Project AdvisorDr. Jie Chen – Project Advisor Wei Nu – Graduate StudentWei Nu – Graduate Student Daniel Aw – Graduate StudentDaniel Aw – Graduate Student Brian Neel – Mechanical Electrical Brian Neel – Mechanical Electrical
SystemsSystems
Questions?Questions?
