| 摘要 |
<P>PROBLEM TO BE SOLVED: To properly execute correction processing of a phase difference of an input-side rotational speed parameter and output-side rotational speed parameter of a torsional element, at least one of which is obtained by communication, in a vehicle including an internal combustion engine, serving as a power source, in which an output shaft is connected with an input shaft of a power transmission mechanism via the torsional element. <P>SOLUTION: A correlation coefficient KCOR between an engine speed OMGCRK and a transmission rotational speed OMGMAIN which are obtained is calculated. A search of a minimum correlation phase difference CAMIN at which the correlation coefficient KCOR becomes a minimum is executed when the torsional element 21 is in a resonance state, and meanwhile a search of a maximum correlation phase difference CAMAX at which the correlation coefficient KCOR becomes a maximum is executed when the torsional element 21 is in a non-resonance state. A phase correction value nCACR is calculated from results of the searches. The phase correction value nCACR is used to execute phase correction of the transmission rotational speed OMGMAIN. <P>COPYRIGHT: (C)2013,JPO&INPIT |
