How to improve 4-speed 3-speed learning control of automatic transmission

摘要

The present invention relates to a method for improving three-speed learning control at four speeds of an automatic transmission, the method comprising: calculating a correction value? I by performing independent learning routines when shifting is synchronized from four speeds to three speeds; Calculating a new correction value △ 'i by calculating the gain K _ij set by experiment to the reinforcement value Δi calculated above, and multiplying the output of a routine that is currently independently learned by the appropriate gain to another routine. The calculated values are applied to the next 4 speeds for 3 speed learning control, and interlocked with each other to prevent mis-learning and improve convergence.