ENERGY ANALYSIS PLOTS
Figure 1: Power vs. Time Plot
- When the graph displays a fairly linear and increasing slope, the power is increasing causing the vehicle to accelerate.
- When the graph displays a horizontal slope of zero, the vehicle is maintaining constant velocity and the power supply is constant.
- At the peak of the graph, the motor direction is reversed which requires an large amount of current.
Figure 2: Power vs. Distance Plot
- When the graph displays a horizontal slope of zero, the vehicle is moving along the track with a constant power supply.
- The first interval, ~0.15 m to ~0.65 m, the motors are running at 25% power.
- When the power is decreased from 25% to 20% the graph falls and resumes again with a slope of zero
- At the peak displayed in the graph, the motors are reversing direction.
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With the team’s AEV implementing a push-pull motor configuration, the group decided to have the propeller blades spin in opposite directions whilst still moving the air in the same direction.
Code:
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reverse(1);
celerate(4, 0, 25, 3);
goFor(1);
motorSpeed(4,20);
goFor(2);
brake(4);
reverse(4);
motorSpeed(4, 25);
goFor(2);
brake(4);
celerate(4, 0, 25, 3);
goFor(1);
motorSpeed(4,20);
goFor(2);
brake(4);
reverse(4);
motorSpeed(4, 25);
goFor(2);
brake(4);
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