1. BATTERY PERFORMANCE METER FOR ELECTRIC PROPULSION SYSTEMS
Team Members:
Ryan Bickham, Dennis Blosser
Cody Dinkins, Todd Dutton, Rachel Shively
Project Sponsor:
Patrick Taylor, Ph.D., AMRDEC
February 26, 2008

2. Received: Tektronix CPS250 Power Supply
Voltage outputs:
One 5.0 VDC
- Two 0 to 20 VDC
Line regulation:
- 0.01% +/- 3 mV

3. Motor-Dynamometer Tolerance Analysis
Dynamometer accuracy is between
+/-0.3% and +/-0.5%
Dyno max power output is 3000 W
Dyno accuracy within 15 W
Estimated motor power is W or hp
For a 12 min run time
If power accuracy is within 15 W then the motor power accuracy will be +/-12.3%

4. Motor Mount Sample Drawing

5. NI Virtual Instrumentation Block Diagram

6. NI Virtual Instrumentation GUI

7. Sample Filtering
- Each signal coming into the SCXI-1102B must be filtered by a simple RC lowpass filter. - From provided documentation: - Choose fs = 512 samples/sec - fc = 165 Hz Simple Resistor/Capacitor calculation: RC = → Choose R = 1 kΩ C = 1 µF

8. Procurement List - SCXI-1000 Filler Panels
- SCXI-1360 Front Filler Panel, Quantity: 2 - SCXI-1361 Rear Filler Panel, Quantity: Available in orders of 5-10, $15/order - EC3 Battery Connector Extension, Quantity: 4 – 5, Price: $6 each

13. 12 VDC