Control device for continuously variable tranmission and control method for continuously variable transmission
AssigneeJATCO Ltd
InventorsKen OKAHARA, Kazutaka ADACHI, Yutaka KANEKO, Kenichi MORI
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Abstract
A controller constitutes a control device for continuously variable transmission for executing a feedback control of a transmission so that an actual speed ratio reaches a target speed ratio. The controller includes a first phase lead compensator and a second phase lead compensator configured to perform phase lead compensation of a feedback primary command pressure, and a peak value frequency determination unit configured to change a peak value frequency according to a speed ratio.
Claims7
A control device for continuously variable transmission for executing a feedback control on the basis of an actual value representing a state of a continuously variable transmission, comprising:
- a controller configured to:
- perform lead compensation of the feedback control if a state where front-rear vibration occurs is determined by determining the presence or absence of the state where the front-rear vibration occurs;
- and
- change a peak value frequency-of the lead compensation according to a speed ratio of the continuously variable transmission.
A control method for continuously variable transmission for executing a feedback control on the basis of an actual value representing a state of a continuously variable transmission, comprising:
- performing lead compensation of the feedback control if a state where front-rear vibration occurs is determined by determining the presence or absence of the state where the front-rear vibration occurs;
- and
- changing a peak value frequency of the lead compensation according to a speed ratio of the continuously variable transmission.
A control device for continuously variable transmission for executing a feedback control on the basis of an actual value representing a state of a continuously variable transmission, comprising:
- lead compensation means for performing lead compensation of the feedback control if a state where front-rear vibration occurs is determined by determining the presence or absence of the state where the front-rear vibration occurs;
- and
- peak value frequency determination means for changing a peak value frequency of the lead compensation according to a speed ratio of the continuously variable transmission.
Dependencies are inferred from the claim text.