POSITION DIAGNOSTIC TEST FOR A SHIFT-BY-WIRE SYSTEM, AND A METHOD THEREOF

摘要

A position diagnostic test for a shift-by-wire system is provided. The shift-by-wire system includes a shift lever configured to move along a shift path, a first and a second position sensor configured to generate a first and a second position signal, respectively, of the shift lever along the shift path, and a controller configured to receive the first and second position signals. The first position sensor includes a first x-coordinate value and a first y-coordinate value, and the second position sensor includes a second x-coordinate value and a second y-coordinate value. The position diagnostic test includes performing a rationality test on each of the coordinate values. If at least one predetermined condition exists for a particular coordinate value, then it fails the rationality test, and the position signal containing the coordinate value may be disregarded.

主权项

1. A shift-by-wire system for a vehicle comprising:
a shift lever movable along a shift path between a plurality of range positions arranged in a shift pattern; a first position sensor configured to sense a position of the shift lever along the shift path, and to generate a corresponding first position signal having a first x-coordinate value and a first y-coordinate value; a second position sensor configured to sense the position of the shift lever along the shift path, and to generate a corresponding second position signal having a second x-coordinate value and a second y-coordinate value; and a controller configured to receive the first position signal from the first position sensor and the second position signal from the second position sensor, and to determine if at least one of the first position signal and the second position signal accurately communicates the position of the shift lever.