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Team Bi-Directional. Keith Beland Christian Brinegar Justin Marsha. Problem Statement.
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Team Bi-Directional Keith Beland Christian Brinegar Justin Marsha
Problem Statement Our problem statement is to create a device that can be used to test the linearity, centering, and dead band of an NRG systems #200P Wind Direction Vane that samples at most every .9 degrees within 2 minutes.
Our Solution • For our final design we chose a solution using a parallel stepper motor while incorporating LabView for displaying and handling of the data.
Background • Dead band • Linearity • Centering
Electrical System DAQ .9 Degree/ 400 step Stepper Motor PC 5V Position Sensor Wind vane
Drive System Belt Driven Design 1:1 Ratio Low torque Needle Cage Thrust Bearing
Windvane Bucket ½” Post “Bucket” Fixed in place to ½” post to hold windvane in place on final product
Belt/Bearing Drive Assembly Stepper Motor Pulley O.D. = 3.75” I.D. = .200” Wind Vane Pulley Bearing is seated with .05” Tolerance. O.D. = 3.75” I.D. = 2.000”
Stepper motor (from Anaheim Automation) The inputs are capable of running from either open collector or TTL level logic outputs. The micro stepping driver features resolutions from 200 - 1600 steps/revolution, providing smooth rotary operation. Input voltage from 8-35 VDC. Step angle of 1.8° with an accuracy of +/- 5%