Lab 05: AEV System Analysis 1 Advanced Energy Vehicle (AEV)

AEV Project Objective (Problem Definition) INITIAL CONCEPTS (Brainstorming) EXPERIMENTAL RESEARCH ANALYZE DESIGN DECISION RESEARCH COMPARE FINAL DESIGN Present AEV Design PT 1 PT 2 PT 3 PT 4 (System Analysis)(Programming)

Learning Objectives  Download data from the automatic control system  Convert EEProm Arduino data readouts to physical engineering parameters  Calculate the supplied power to the AEV  Calculate the supplied incremental and total energy to the AEV

AEV Data Recorder  MATLAB Program developed at OSU  Zip file is found in AEV Documents  Takes the EEProm data and puts it in an Excel spreadsheet

AEV Data Recorder Verify that the Arduino is plugged into the computer and TURNED ON Type in a name for the Excel File Click on Run Let MATLAB establish a connection to the Arduino Once complete, open the Excel file

AEV Data Conversion  Convert the EEProm into physical parameters of: Time (seconds) Current (amps) Voltage (volts)  Analyze the data by calculating: Power (watts) Incremental Energy (joules) Total Energy (joules)

Time, Current, Voltage, & Power  Time:  Current:  Voltage:  Power: t = time (seconds) t E = EEProm time (milliseconds) I = current (amps) I E = EEProm equivalent current V R = Arduino reference voltage V = Voltage (volts) V E = EEProm equivalent voltage P in = Power in (watts) V = Voltage (volts) I = Current (amps)

Energy  Remember that Energy is the area under the power versus time curve.  A rectangle approximation of the power and time will be used to calculate the incremental and total energy.  There are 3 approximation methods:

Energy  The midpoint method will be used to calculate the energy.  The midpoint method uses the averaged power of 2 neighboring points and multiplied by the time increment:  Sum up the incremental energy for the total value used throughout the operation

Questions?