发明名称 |
ADAPTIVE PRESSURE CONTROL FOR AN AUTOMATIC TRANSMISSION |
摘要 |
An improved adaptive transmission pressure control in which cumulative adaptive corrections are stored in a multi-cell memory array, the cells being associated with specified contiguous ranges of a vehicle operating parameter, such as engine throttle position. Periodically determined adaptive correction amounts are applied to a selected cell (230) which includes the engine throttle setting measured at the initiation of the shift and to two or more cells (232-238) associated with contiguous engine throttle ranges. In this way, a relatively large number of cells may be employed to minimize approximation errors, while maintaining a cell-to-cell continuum of pressure correction values. In operation, an electro-hydraulic pressure regulator is controlled as a combined function of a predefined pressure command obtained from a normal table look-up and a cumulative correction amount obtained from the memory array. <IMAGE> <IMAGE> |
申请公布号 |
CA2071403(A1) |
申请公布日期 |
1993.04.16 |
申请号 |
CA19922071403 |
申请日期 |
1992.06.17 |
申请人 |
GENERAL MOTORS CORPORATION |
发明人 |
VUKOVICH, WILLIAM J.;KOENIG, MELISSA M. |
分类号 |
B60W10/04;B60W10/08;B60W10/10;F16H61/00;F16H61/04 |
主分类号 |
B60W10/04 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|