p12022: lvad power transmission test rig
DESCRIPTION
P12022: LVAD Power Transmission Test Rig. Erin McNally Pedro Baez Paul Parthemore Kris Stichter. Table of Contents. Background Information Customer Needs Engineering Specifications Preliminary Design Proposed Design GUI Design DAQ Specifications Feasibility Analysis BOM - PowerPoint PPT PresentationTRANSCRIPT
TABLE OF CONTENTS Background Information Customer Needs Engineering Specifications Preliminary Design Proposed Design GUI Design DAQ Specifications Feasibility Analysis BOM Edgewound Resistor Specifications Interface Diagram Interface Ranges Calibration Test Plan Device Test Plan Risk Assessment Project Plan
BACKGROUND INFORMATION
About 5 million Americans are currently living with congestive heart failure (CHF)
Heart failure contributes to about 287,000 deaths per year
Current left ventricular assist devices (LVAD) require a cable connecting to the control unit through a hole in the abdomen
A permanent opening through the epidermis is highly vulnerable to infection
Current wireless power transmission utilizes induction which tends to cause tissue damage due to excessive heat generation
SOLUTION: Transmit power wirelessly through the use of a magnetic coupler
Test Rig Scope: Design and build functional test rig to analyze performance of current and future wireless power transmission devices
CUSTOMER NEEDS
Customer Need #
Importance Description
CN1 9 Ability to quantify input powerCN2 9 Ability to quantify output powerCN3 1 Ability to meet size constraintsCN4 1 Ability to meet weight constraintsCN5 1 Ability to easily change transmission materialsCN6 1 Ability to change thickness of transmission materialCN7 3 Ability to measure contact stress on transmission materialCN8 3 Ability to measure external temperature of motorCN9 3 Ability to measure internal temperature of generatorCN10 3 Ability to measure external temperature of generatorCN11 1 Ability to measure Motor RPMCN12 1 Ability to measure Generator RPMCN13 9 Ability to quantify torque on the housing of device
TEST RIG ASSEMBLY
MICROMETER LINEAR STAGE
LOAD CELL
LOAD CELL
MOTOR CLAMP ASSEMBLY
GENERATOR CLAMP ASSEMBLY
MOTORGENERATOR
TURNTABLE
USB-2416 FEATURES
Measure thermocouples or voltage 32 analog inputs, expandable to 64 24 bit resolution 1kS/s sampling 8 digital I/O Two counters Up to 4 analog outputs
USB-2416 The USB-2416 series is a multifunction DAQ module
designed for highly accurate voltage and/or temperature measurements (configurable from ±0.078V to ±20V).
Analog inputs are user-configurable for voltage or temperature input on a per-channel basis
When measuring temperature, analog inputs must be configured in differential (DE) mode. All modules also include open thermocouple detection to identify improperly working thermocouples.
Two 32 bit counters are included The TTL Level inputs are capable of read/write rates
of up to 500Hz with an input frequency of up to 1MHz.
Compatible with Labview.
FEASIBILITY ANALYSIS
No large forces/temperatures: No finite element analysis required
Calculation for generator torque load cell: Want to use 10 lb load cell available 12026 determined 0-1 N-m (0-8.85 in-lb) was
acceptable measurement range
All other measurement ranges approved by 12026 and require no analysis
BILL OF MATERIALS
Level Description Quantity List Price Our Cost Supplier Owner Lead Time Status1 Test Rig Assembly 12 Base Assembly 1 Erin3 Base 1 $49.01 $49.01 McMaster Erin 3 days3 Load Cell 1 $450 $0 Interface, Dr. Day Erin in house2 Measurement Assembly 1 Paul3 DAQ unit 1 $1,099 $35.50 Measurement Computing Corp Paul in house3 Thermocouples 5 - $0 Dr. Day Paul in house3 Wire ? $3.54 $3.54 Newark Paul 3 days3 9 V Battery 1 - $0 Ultralife Batteries Paul in house2 Generator Mount Assembly 1 Pedro3 Edgewound Resistor 1 $16.17 $16.17 McMaster Pedro 3 days3 Generator Turn Table 1 $23.06 $23.06 McMaster Pedro 3 days3 Generator Housing Clamp 1 Pedro4 Housing Clamp 1 - - Pedro5 Al Bar Stock $23.37 $23.37 McMaster Pedro 3 days4 Air Pistons 4 $59.84 $59.84 McMaster Pedro 3 days4 Air Lines 4 $4.50 $4.50 McMaster Pedro 3 days4 Pneumatic Fittings 4 $14.52 $14.52 McMaster Pedro 3 days4 4 Outlet Manifold 1 $12.62 $12.62 McMaster Pedro 3 days5 Female NPT Hose Coupling 1 $1.21 $1.21 McMaster Pedro 3 days4 Moment Arm 1 - - Pedro5 Al Bar Stock - - McMaster
BILL OF MATERIALSLevel Description Quantity List Price Our Cost Supplier Owner Lead Time Status
2 Motor Mount Assembly 1 Kris3 Vertical Framework Assembly 1 Kris4 Vertical Support 2 - - Kris in house4 Crossbar 1 - - Kris in house5 Extruded Al $6.76 $0 Prof. Hanzlik Kris4 Vertical Motion Assembly 1 - - Kris 3 days5 Micrometer 1 $180 $0 Dr. Day Kris in house5 Dowel Pins 5 $6.87 $6.87 McMaster Kris 3 days5 Bushings 2 $6.45 $6.45 McMaster Kris 3 days5 Threaded Rod 1 $2.50 $2.50 McMaster Kris 3 days5 Crank Handle 1 $28.67 $28.67 McMaster Kris 3 days5 Al Bar Stock - -3 Suspended Assembly 1 Kris4 Load Cell 1 $540 $0 Dr. Day Kris in house4 Motor Housing Clamp Supports 4 - - Kris5 Al Bar Stock - -4 Motor Housing Clamp 1 Kris5 Housing Clamp 1 - - Kris6 Al Bar Stock - - Kris5 Air Pistons 4 $59.84 $59.84 McMaster Kris 3 days5 Air Lines 4 $4.50 $4.50 McMaster Kris 3 days5 4 Outlet Manifold 1 $12.62 $12.62 McMaster Kris 3 days5 Female NPT Hose Coupling 1 $1.21 $1.21 McMaster Kris 3 days5 Pneumatic Fittings 4 $14.52 $14.52 McMaster Kris 3 days
Mounting Alignment Plate $4.66 $4.66 KrisMiscellaneous Hardware $50.00 $50.00 Kris
Totals 70 2675.44 435.18
EDGEWOUND RESISTOR - LOAD
•ASE – Adjustable resistor•Capable of handling high amount of power and high amount of current•Choosing capabilities of 240 W with a resistor that varies from 0-8Ω with a 5% tolerance.
Interface Diagram
•All measurements are going to USB-2416 DAQ unit•Voltage and current readings will produce power result•NI Labveiw will be used to view all the readings
INTERFACE RANGES
Measurement Unit of Measure 12022 Measurement Range 12026 Operating RangeInput Power to Motor W 0-200 0-50Output Power from Generator W 0-200 0-35Thickness of Transmission Material m 0-0.05 0-.025Contact Force N 0-178 0-112External Motor Temperature C 0-100 35-100Internal Generator Temperature C 0-100 35-100External Generator Temperature C 0-100 35-100Generator Housing Torque N-m 0-1 0-1Motor RPM RPM 0-30000 0-15000Generator RPM RPM 0-50000 0-32000
CALIBRATION TEST PLAN
Measurement Device Means of testing All parts in Tested byTemperature Thermocouples and DAQ verify with freezing and boiling water 14-Mar 23-MarVoltage DAQ verify with power supply and multimeter have 23-MarCurrent DAQ verify with power supply and multimeter have 23-MarCounter (RPM's) DAQ verify with motor, hall effect sensor, and dyno have all 12022 parts dependent on 12026Contact Force Load cell and DAQ verify with calibrated weights 14-Mar 23-MarTorque Load cell and DAQ verify with calibrated weights have 23-Mar
CALIBRATION TEST PLAN Voltage Verification:
Use a DC power supply. Set it at a nominal voltage (5V) and connect leads to DAQ. DAQ should record the applied voltage of power supply (5V).
Verify actual voltage with multimeter Current Verification:
Use a DC power supply. Set it at a nominal voltage (5V) and connect leads to the DAQ with a resistor in order to create voltage drop. DAQ should record voltage that is different from the applied voltage. Use Ohm’s law to calculate current in Labview
Verify actual current with multimeter No calibration necessary for DAQ counters Temperature Verification:
Submerge thermocouple in ice water and measure voltage Submerge thermocouple in boiling water and measure voltage Voltage and temperature have a linear relationship and temperature will be
proportional to measured voltage Contact Force Verification:
Attach calibrated weights to load cell and measure voltage Voltage and force have a linear relationship and force will be proportional to
measured voltage Housing Torque Verification:
Attach calibrated weights to load cell and measure voltage Voltage and force have a linear relationship and force will be proportional to
measured voltage
DEVICE TEST PLAN All results will be viewed in Labview Leads for current and voltage will be directly inserted into
DAQ For current acquistion a resistor may be needed Voltage and current at the motor and generator will be used to
calculate power Efficiency will be calculated in Labview by:
Leads for thermocouples will be directly inserted into DAQ Temperatures are read as voltages, which will be calibrated
before testing Leads from force gauges will be directly inserted into DAQ
Forces are read as voltages, which will be calibrated before testing
Forces will be converted to pressure by multiplying the measured force by the known area of the device
Leads for the Hall Effect sensors will be inserted directly into the counter inputs of DAQ Counts will be converted into RPM’s