Methods and apparatus to power an exercise machine

摘要

Methods and apparatus to power an exercise machine are disclosed herein. An example method includes measuring a power supply current produced by a user of the exercise machine. A rotations per minute of the exercise machine is measured. A power supply reference current is determined, the power supply reference current based on a user selected wattage and the rotations per minute. A differential power supply current is calculated based on the power supply reference current and a measured current of a power supply of the exercise machine. A power supply duty cycle is calculated based on a previous power supply duty cycle, a time constant, the differential power supply current, and a previous differential power supply current, the power supply duty cycle to control power supplied to a console of the exercise machine. The power supply duty cycle is output to a power output controller.

主权项

1. A method to power an exercise machine, the method comprising:
measuring a power supply current produced by a user of the exercise machine; measuring a rotations per minute of the exercise machine; determining a power supply reference current, the power supply reference current based on a user selected wattage and the rotations per minute; calculating, with a processor, a differential power supply current based on the power supply reference current and a measured current of a power supply of the exercise machine; calculating, with the processor, a power supply duty cycle based on a previous power supply duty cycle, a time constant, the differential power supply current, and a previous differential power supply current, the power supply duty cycle to control power supplied to a console of the exercise machine; and outputting the power supply duty cycle to a power output controller.