Throttle valve control system obtaining continuous sensor output and throttle valve control method thereof
US5746178A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Nov 8, 1996 |
| Grant date | May 5, 1998 |
| Priority date | — |
| Expiry date | Nov 8, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01D18/008
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A throttle valve control system and a control method thereof prevents an output of throttle sensors from becoming discontinuous at a point of switching the throttle sensors, and obtains a continuous output over the whole range of the sensor output, and accordingly can perform highly accurate throttle control. The system includes a first A/D converter for converting an output signal of a throttle sensor into a digital signal, an amplifier for amplifying the output signal of the throttle sensor, a second A/D converter for converting the amplified output signal into a digital signal and an amplification factor adjuster for receiving outputs from one or the other of the A/D converters and scaling the received output signal. A correction is provided for the amplification factor of the adjuster whereby a continuous actual opening degree signal without any step is obtainable over the entire range of the throttle sensor output.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.