Hybrid electric vehicle driveline active damping and transient smoothness control
AssigneeFord Global Technologies, LLC
InventorsWei Liang, Jeffrey Allen Doering, Xiaoyong Wang, Thomas Chrostowski, Jonathan Andrew Butcher, Ming Lang Kuang, Fazal Urrahman Syed
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Abstract
A method and system for controlling a hybrid electric vehicle include controlling torque in a traction motor in response to a provisional motor torque that has been adjusted based on a difference between a measured traction motor speed and a calculated vehicle speed and filtered to attenuate a resonant driveline frequency.
Claims20
A method of controlling a hybrid electric vehicle comprising:
- controlling traction motor torque in response to a provisional motor torque, adjusted based on a difference between a measured traction motor speed and a calculated vehicle speed and filtered to attenuate a driveline resonant frequency.
A hybrid vehicle controller configured to receive a torque request and output a commanded motor torque, the controller comprising control logic that controls motor torque based on a target torque filtered to attenuate a driveline resonant frequency and adjusted based on a difference of a measured motor speed and a calculated vehicle speed.
A hybrid vehicle comprising:
- a motor drivably connected to traction wheels by a driveline having a resonant frequency;
- and
- a motor controller configured to control motor torque in response to a provisional motor torque filtered to attenuate a driveline resonant frequency and damped based on a difference of a measured motor speed and a calculated vehicle speed.
Dependencies are inferred from the claim text.