Self-adaptive control method and system for lock-up capacity of lock-up clutch under sliding working condition

The invention discloses a self-adaptive control method and system for the locking capacity of a lock-up clutch under the sliding working condition, and the method comprises an activation stage and a self-adaptive control strategy. According to the self-adaptive control strategy, the lock-up capacity value of the lock-up clutch can be corrected according to the first rotating speed information output by the engine and the second rotating speed information of the hydraulic torque converter, the target lock-up capacity value can be determined, and then the lock-up clutch is controlled according to the target lock-up capacity value. By the adoption of the method, the target locking capacity of the locking clutch under the working condition can be dynamically adjusted, and the actual locking capacity of the locking clutch can reach the control target of just keeping locking of the clutch. Therefore, the accuracy of control over the locking capacity of the locking clutch under the sliding working condition can be i