P12022: LVAD POWER TRANSMISSION TEST RIGErin 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 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

ENGINEERING SPECIFICATIONS

TEST RIG PRELIMINARY DESIGN

TEST RIG PRELIMINARY DESIGN

TEST RIG PROPOSED DESIGN

TEST RIG ASSEMBLY

MICROMETER LINEAR STAGE

LOAD CELL

LOAD CELL

MOTOR CLAMP ASSEMBLY

GENERATOR CLAMP ASSEMBLY

MOTORGENERATOR

TURNTABLE

GENERATOR CLAMP ASSEMBLY

AIR FITTINGS

TORQUE BAR

CLAMP PADS

SINGLE-ACTION AIR PISTONS

LINEAR STAGE

CRANK & LEAD SCREW

1” MICROMETER HEAD

SLIDE ASSEMBLY

GUI DESIGNContact Force (lb)

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

FEASIBILITY ANALYSIS

Calculations for piston force and vertical load cell capacity:

4

4

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

RISK ASSESSMENT

PROJECT PLAN

QUESTIONS?