Treadmill motor control
US6443875B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 30, 2000 |
| Grant date | Sep 3, 2002 |
| Priority date | — |
| Expiry date | Jan 24, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B70/10
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A motor control for exercise treadmill having an AC motor is disclosed which includes various features to enhance operation of the treadmill. These features include a motor control that can vary by shifting or staggering the phases of drive signals applied to the motor in order to reduce treadmill frame vibration. The features also include having the motor controller increase the slip of the motor to improve low speed operation of the motor and to increase the amperage of the drive signals when the motor is operating at a given speed in order to maintain that speed. In addition, a power factor control circuit can be used to increase the efficiency of the motor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.