Methods and apparatus to power an exercise machine
US9579534B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 13, 2013 |
| Grant date | Feb 28, 2017 |
| Priority date | — |
| Expiry date | May 14, 2035 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63B2220/54
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.