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Advanced Energy Vehicle (AEV)

Advanced Energy Vehicle (AEV). Lab 06: AEV System Analysis 2. FINAL DESIGN. AEV Project Objective (Problem Definition). Initial Concepts (Brainstorming). experimental Research. (Programming). (System Analysis). PT 1 PT 2 PT 3 PT 4. Present AEV Design. Learning Objectives.

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Advanced Energy Vehicle (AEV)

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  1. Advanced Energy Vehicle (AEV) Lab 06: AEV System Analysis 2

  2. FINAL DESIGN AEV Project Objective (Problem Definition) Initial Concepts (Brainstorming) experimental Research (Programming) (System Analysis) PT 1 PT 2 PT 3 PT 4 Present AEV Design

  3. Learning Objectives • Download data from the automatic control system. • Convert EEProm Arduino data readouts to physical engineering parameters such as distance traveled and velocity. • Calculate the performance characteristics of the AEV.

  4. Distance and Velocity • Using the wheel count sensor, we can calculate the following: • Distance • Velocity • Kinetic Energy s= distance (meters) v = velocity (meters/seconds) s = distance (meters) t = time (seconds) KE= Kinetic Energy (joules) m = Mass (kilograms) v = velocity(meters/second)

  5. AEV Performance Characteristics • The efficiency of the system is composed of both the propeller and the electric motor: • The efficiency is defined as the ratio of the power available (output) and the power supplied (input):

  6. AEV Performance Characteristics • The efficiency of the propulsion system is a function of the AEV’s velocity and the propeller RPM: • We can use non-dimensional analysis to create a parameter to be able to combine the independent variables. • These independent variables are different for each AEV and Arduino control program.

  7. Advance Ratio • Using Buckingham Pi Theorem, we are able to reduce the number of dependent variables for the efficiency from two to one: • “J’ above is known as the Propeller Advance Ratio which is given by RPM= Revolutions per Minute v = velocity(meters/second) D = Propeller Diameter (meters)

  8. Advance Ratio Limits • The propeller testing and sample characteristics are generated for a range of propeller advance ratios and expressed as: • This needs to be applied to your data for both System Analysis 2 and later with System Analysis 3

  9. Propeller RPM • The propeller RPM is a function of the current being supplied to the motor by the command inputs. • The following are sample supplied characteristics** of the two various size propellers: **We will revisit the RPM curves in System Analysis 3 and update the trendline above.

  10. Propeller Efficiency • You are provided with sample propeller advance ratio** characteristics: ** We will revisit the propeller efficiency in System Analysis 3and update the trendline above.

  11. Questions?

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