Adaptive shift learn control for automatic transmissions
AssigneeGM Global Technology Operations LLC
InventorsRandall B. Dlugoss, Xiao Dong Zhang, Tiffany N. Vicks, Xiaoping Wu
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Abstract
A control system includes first and second clutches of a transmission and a control module. Each of the first and second clutches includes an on state and an off state. The control module cycles the first clutch between the on state and the off state using a stepped command signal while the second clutch is maintained in the on state. The control module monitors an output parameter of the transmission that is based on the stepped command signal. The control module controls the transmission based on the output parameter.
Claims20
A control system, comprising:
- first and second clutches of a transmission, wherein each of said first and second clutches includes an on state and an off state;
- and
- a control module that cycles said first clutch between said on state and said off state using a stepped command signal while said second clutch is maintained in said on state, that monitors an output parameter of said transmission that is based on said stepped command signal, and that controls said transmission based on said output parameter.
A method, comprising:
- providing first and second clutches of a transmission, wherein each of said first and second clutches includes an on state and an off state;
- and
- cycling said first clutch between said on state and said off state using a stepped command signal while maintaining said second clutch in said on state;
- monitoring an output parameter of said transmission that is based on said stepped command signal;
- controlling said transmission based on said output parameter.
Dependencies are inferred from the claim text.