Determining shaft angle from 3 single turn angle sensor signals involves computing virtual intermediate parameters, determining number of revolutions, adding to first sensor signal plus 360 degrees

摘要

The method involves computing a first virtual intermediate parameter from the angle signals of first and second angle sensors and a constant, computing a second virtual intermediate parameter from the first virtual intermediate parameter and the angle signal of a first pinion sensor, determining the number of revolutions and adding to the first angle sensor signal plus 360 degrees. The method involves computing a first virtual intermediate parameter phioS as (n + 1*deltaVA1 + n*deltaVA2 + 25*k*360 degrees)/312, where deltaVA1 and deltaVA2 are angle signals of first and second angle sensors (41,43) and k is a constant, computing a second virtual intermediate parameter as (M*phioS + m + n*deltaRi1 + 9*k*360 degrees)/40, where deltaRi1 is the angle signal of a first pinion sensor, determining the number of revolutions and adding to the first angle sensor signal plus 360 degrees.