| 摘要 |
<P>PROBLEM TO BE SOLVED: To suppress interference of each feedback control which is performed independently in an electric type differential section and a gear change section, in performing simultaneous gear change in the electric type differential section and the gear change section, in a power transmission device for vehicle equipped with the electric type differential section and the gear change section. <P>SOLUTION: When performing simultaneous gear change in the differential section 11 and an automatic gear change section 20, the feedback control gain in connection with torque control of a first electric motor M1 during gear change is made smaller compared with a case when the gear change does not overlap. Thereby, since fluctuation of first electric motor torque T<SB>M1</SB>is further suppressed in feedback control in the differential section 11 and fluctuation of actual gear change section input torque T<SB>IN</SB>is further suppressed, deviation of a change gradient of an actual gear change section input rotation speed N<SB>AT</SB>from a target gradient is further suppressed in feedback control in the automatic gear change section 20. That is to say, the change of the actual gear change section input rotation speed N<SB>AT</SB>is stabilized, and feedback control of the automatic gear change section 20 is stably carried out. <P>COPYRIGHT: (C)2011,JPO&INPIT |
