Method of controlling damper clutch through learning
AssigneeHyundai Motor Company
InventorJun Sung Park
Life of this patent
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Abstract
Disclosed is a method of controlling a damper clutch through learning. A controller determines whether a driving condition of a vehicle is a condition where a predetermined selected fluid pressure value is desired. When necessary learning conditions are satisfied, the controller applies a control current for realizing a relevant fluid pressure to the solenoid valve. The controller updates the control current of the solenoid valve to an appropriate value based on response of the damper clutch. Thereafter, the controller controls the solenoid valve based on the updated control current.
Claims7
A method of controlling a damper clutch through learning, the method comprising:
- selecting, by a controller at a learning target selecting step, a selected fluid pressure value from a plurality of predetermined selected fluid pressure values as a learning target fluid pressure value when a driving condition of a vehicle where the selected fluid pressure value is required occurs;
- obtaining, by the controller at a current obtaining step, a control current of a solenoid valve from a control map, the control current being required to apply a fluid pressure related to the learning target fluid pressure value to the damper clutch;
- comparing, by the controller at a comparing step, at least one of a maximum slip level among slip levels of the damper clutch during controlling the solenoid valve with the control current obtained at the current obtaining step and a target reach time for the damper clutch to reach a target slip level with at least one of a reference slip level and a reference target reach time that are predetermined for the driving condition while controlling the solenoid valve with the control current obtained at the current obtaining step;
- correcting, by the controller at a learning step, the control current for the learning target fluid pressure value in the control map based on a difference that is a result of performing the comparing step, and
- updating control currents for fluid pressure values between a fluid pressure value for which the control current is corrected and another selected fluid pressure value adjacent thereto through interpolation;
- and
- controlling, by the controller at a learning applying step after the learning step, the solenoid valve by selecting a control current of the solenoid valve for a new fluid pressure value that is required according to the driving condition of the vehicle, from an updated control map,
- supplying a new fluid pressure corresponding to the new fluid pressure value by the solenoid valve to the damper clutch.
Dependencies are inferred from the claim text.