Copenhagen Wheel

The Copenhagen Wheel is a self-contained rear wheel electric bicycle system which transforms a traditional bicycle into a hybrid e-bike. The app-connected Wheel is equipped with an electric motor, battery, and suite of sensors that work together to seamlessly amplify a rider's pedal power by up to ten times. The Copenhagen Wheel was developed at MIT's Senseable City Lab in 2009 in partnership with the city of Copenhagen, and unveiled at the 2009 United Nations Climate Change Conference. In December 2012, Assaf Biderman, a co-inventor of the Wheel and Associate Director of the MIT Senseable City Lab, founded Superpedestrian Inc. with an exclusive license to commercialize the Wheel. After several years of engineering, testing, and validation, the Copenhagen Wheel officially launched in the U.S. in April 2017, and in Europe in October 2017[1]

Copenhagen Wheel with red hub

Physical components

The Copenhagen Wheel contains a custom brushless motor, advanced sensors, control systems, and a lithium-ion battery, all enclosed within the rear wheel hub.[2] The control system interfaces with a range of sensors measuring actual torque, power, cadence, pedal position, and acceleration to monitor a rider's effort when pedaling. The Wheel responds to a rider's inputs by providing the appropriate level of assistance at each moment. The wheel's battery is charged via an external cord that fits a standard wall outlet. Electronic Braking Assistance while riding will partially recharge the wheel when coasting or backpedaling. With a full charge, the wheel's reported range is up to 50 km (31 mi), with variations depending on assist mode and terrain. Extensions in range are possible when using low-power modes.[3]

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gollark: Computers are fast, FFTs are O(n log n) or something, just do so.
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gollark: Aren't Fourier transforms meant to be lossless?
gollark: Unfortunately, I imploded.

References
  1. "A startup born at MIT has created a wheel that can make any bike electric — and now it's coming to Europe". Business Insider. Retrieved 2018-08-15.
  2. "Support - Get to know your Copenhagen Wheel and how it works". account.superpedestrian.com. Retrieved 2018-08-15.
  3. "Support - What affects my range?". account.superpedestrian.com. Retrieved 2018-08-15.
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