Parameter state estimation

Details Parameter state estimation Parameter state estimation

2006-03-22

2010-06-15

Tran, Dalena (Department: 3664)

Data processing: vehicles, navigation, and relative location

Vehicle control, guidance, operation, or indication

Transmission control

C303S112000

Reexamination Certificate

active

07739016

ABSTRACT:
The state estimator provides parametric estimates for operating states not readily measurable with production powertrain and driveline hardware, such as real-time torque values of axles and dampers. This facilitates implementation of torque oscillation damping control schemes which use multivariable feedback. A control parameter is estimated for a powertrain system having multiple torque-generative devices operably connected to a transmission device having a torque output to a driveline. This includes establishing a plurality of equations operable to estimate the control parameter and other operating parameters based upon torque inputs. The operating parameters comprise operating speeds of the powertrain system and driveline. The operating parameters that comprise operating speeds of the powertrain system and driveline are determined. Coefficients of the plurality of equations are adjusted based upon the operating speeds of the powertrain system.

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