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Team Windchasers - Project progress video #026

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Uploaded on Aug 7, 2011

Wind Energy Event 2011 - Team Windchasers - Project progress video #026.

The vehicle is running under its own power. There is a lot of torque in the hub engine and the vehicle moves very smoothly. There is a small tendency to nose wheel shimmying, but a gas piston should help relieve that.

We also have some other problems that need to be fixed. The EMC of the circuits have to be boosted. When the engine is running at high power the electrical noise becomes so loud that the FPGA resets. We are thinking of different solutions; one could be shielded boxes, another could be putting a "sock" around the control wires and grounding one end.

The vehicle reached speeds of up to 45.9 km/h when running on 4 batteries providing the motor controller with 48V. The vehicle is estimated to weigh roughly 150 kg with the 4 batteries and without the driver, but it could be more.

We don't have a wheel to steer the vehicle - we have a stick instead. Pushing the stick forward turns the vehicle to the left. Pulling the stick back turns the vehicle to the right. There were no problems what so ever getting used to that way of steering the vehicle.

Instead of a speeder pedal we have a throttle stick. This works very well especially with drivers of different length.

Instead of a brake pedal we have a brake handle on the steering stick. That handle controls the hydraulic calipers on the two rear wheels. We haven't connected and bled those brakes yet, so we used the electric brake inside the hub wheel to brake the vehicle. The cool thing about that brake is that it puts energy back into the batteries. This brake is however not as good at braking the vehicle so a combination may be the best solution.

But either way it was a major mile stone in this build and we are very happy with the result so far.

Team Windchasers
Aarhus University - Herning (Denmark)
Wind Energy Event 2011

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