Control device for continuously variable tranmission and control method for continuously variable transmission
AssigneeJATCO Ltd
InventorKen OKAHARA
Life of this patent
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Abstract
A controller executes a feedback control of a transmission so that an actual speed ratio reaches a target speed ratio. The controller includes first and second phase lead compensators configured to perform phase lead compensation of a feedback primary command pressure, a lead compensation on/off determination unit configured to determine to set on or off the phase lead compensation, and an advance amount filter unit configured to smooth a change of a gain according to on/off determination of the phase lead compensation when the phase lead compensation is on/off-switched.
Claims5
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;
- determine an execution/stop of the lead compensation;
- and
- smooth a gain change of the lead compensation according to execution/stop determination of the lead compensation when the execution/stop of the lead compensation is switched.
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;
- determining an execution/stop of the lead compensation;
- and
- smoothing a gain change of the lead compensation according to execution/stop determination of the lead compensation when the execution/stop of the lead compensation is switched.
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;
- execution/stop determination means for determining an execution/stop of the lead compensation;
- and
- gain smoothing means for smoothing a gain change of the lead compensation according to execution/stop determination of the lead compensation when the execution/stop of the lead compensation is switched.
Dependencies are inferred from the claim text.