Position detecting switch-combined electronic control unit for automatic transmission
US6021368A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 21, 1997 |
| Grant date | Feb 1, 2000 |
| Priority date | — |
| Expiry date | Nov 21, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K17/941
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A compact-sized position detecting switch-combined electronic control unit disposed on the main body of an automatic transmission and used for detecting range positions chosen by a driver during a shifting operation. The control unit has a base board on which a plurality of elements are arranged, including a microcomputer containing an automatic transmission control program, and a position detecting switch whose detecting portion is connected to the microcomputer. The base board and the position detecting switch are disposed in a single case. The position detecting switch has a rotor and a plurality of non-contact sensors disposed on the base board. The microcomputer contains a learning control program for calculating and correcting any positional deviation in the rotational angle of the rotor with respect to each sensor on the basis of signals from the sensors corresponding to rotation of the rotor. Some of the elements on the base board are arranged outside the range of rotation of the rotor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.