Loading patent…
AssigneeGM Global Technology Operations LLC
InventorsRobert L. Morris, R. Anthony Hansen, Michael D. Haggerty
Estimating the term…
The present invention provides an improved method and apparatus for regulating state variable estimators used in a hybrid active damping system for a vehicle powertrain. The state estimator provides variable estimates for operating states, such as real-time torque values of axles and dampers, that are not readily measurable with production powertrain and driveline hardware. This facilitates implementation of other control algorithms, such as torque oscillation damping control schemes which use multivariable feedback. The apparatus and method monitors the operating mode of the powertrain, and resets the state estimator for the hybrid active damping ring (HADR) under predetermined operating conditions. For instance, the state estimator includes an array of current state and predicted state variables that are set equal to corresponding reference values or measured values if the powertrain enters into four-wheel drive low (4WDLO).
A method for regulating a state variable estimator used by a vehicle powertrain operable to function in an array of operating modes, wherein the powertrain includes an active damping system having at least one torque-generative device selectively operable to generate a damping torque configured to attenuate vibrations in the powertrain, the method comprising:
A method for regulating a state variable estimator used in a hybrid active damping system for a hybrid powertrain having a plurality of torque-generative devices operatively connected to a power transmission, the powertrain being operable to function in an array of operating modes, the method comprising:
A control apparatus for regulating a state variable estimator used in a hybrid active damping system having at least one torque-generative device operable to generate a damping torque configured to attenuate vibrations in a hybrid powertrain operable to function in an array of operating modes, the apparatus comprising:
Dependencies are inferred from the claim text.