Method and apparatus for executing a shift path to a target powerstrain state
AssigneeGM Global Technology Operations LLC
InventorsLawrence A. Kaminsky, Besim Demirovic, Pinaki Gupta, Anthony H. Heap
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Abstract
A method for controlling a transmission of a powertrain system includes executing a single source shortest path search to identify a preferred shift path originating with an initial powertrain state and terminating at a target powertrain state, wherein the single source shortest path search employs transition-specific costs and situational costs to identify the preferred shift path. The preferred shift path is executed to achieve the target powertrain state.
Claims19
A method for controlling a transmission of a powertrain system, the method comprising:
- executing a single source shortest path search to identify a preferred shift path originating with an initial powertrain state and terminating at a target powertrain state, said single source shortest path search employing transition-specific costs and situational costs to identify the preferred shift path;
- and
- executing the preferred shift path to achieve the target powertrain state.
A method for controlling a multi-mode transmission of a powertrain system, the method comprising:
- determining a transition-specific cost for each of a plurality of candidate transitions from an initial powertrain state to a target powertrain state;
- identifying a preferred shift path between the initial powertrain state and the target powertrain state including a plurality of sequentially executed transitions originating with the initial powertrain state and terminating at the target powertrain state by executing a single source shortest path search that employs the respective transition-specific costs and situational costs;
- and
- executing the preferred shift path between the initial powertrain state and the target powertrain state.
A method for controlling a multi-mode transmission of a powertrain system, the method comprising:
- executing a single source shortest path search to identify a preferred shift path including a plurality of sequentially executed transitions originating with an initial powertrain state and terminating at a target powertrain state employing situational costs;
- and
- executing the preferred shift path between the initial powertrain state to the target powertrain state.
Dependencies are inferred from the claim text.