Intelligent commutation pulse detection system to control electric D.C. motors used with automobile accessories
US5497326A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 3, 1994 |
| Grant date | Mar 5, 1996 |
| Priority date | — |
| Expiry date | Aug 3, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05B2219/45022
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A control system for use with a bidirectional motor connected to a motorized vehicle accessory to move the accessory a distance from a first position to a second position. The control system includes a detector responsive to control signals emitted from the motor during rotation, where the control signals indicate the amount of motor rotation. The control system also includes a memory that stores information used to represent the position of the accessory. Additionally, this control system includes a controller responsive to the memory and the detector. The controller provides an output signal to operate the motor based on the distance between a first position and a second position of the accessory as well as control signals that indicate the amount of motor rotation. The controller includes an adjustment routine that determines a correction factor that is applied to the output signal to compensate for inaccuracies in control signal detection.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.