Input smoothing method and apparatus for an electronic throttle control system
US6157888A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 8, 1999 |
| Grant date | Dec 5, 2000 |
| Priority date | — |
| Expiry date | Feb 8, 2019 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D2041/141
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A method and apparatus for smoothing a throttle plate position command prior to being used by a closed loop throttle control unit. The method sequentially indexes through a lookup table storing a series of values of a smoothing function at routine time intervals. The difference between the current throttle plate command and the received throttle plate command is multiplied by the value of the smoothing function indexed from the lookup table. The product is then added to a reference throttle plate position command to generate a series of smoothed throttle plate position commands applied to the throttle control unit which provides smoother operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.