Back to results
US 10,308,233 B2Granted
Methods and system for estimating driveline torque of a hybrid vehicle
AssigneeFord Global Technologies, LLC
InventorsRajit Johri, Jeffrey Allen Doering, Ming Lang Kuang, Xiaoyong Wang, Mark Steven Yamazaki, Jason Meyer
Life of this patent
Estimating the term…
Abstract
Systems and methods for operating a hybrid powertrain that includes an engine and a motor/generator are described. The systems and methods align in time an estimated motor torque and an actual motor torque to provide an estimated driveline torque. The alignment compensates for communications delays between different controllers over a controller area network.
Claims17
A powertrain operating method, comprising:
- estimating a motor torque via a controller based on a requested motor torque and a motor model;
- correcting the estimated motor torque via adding a low pass filtered error value to the estimated motor torque, where the low pass filtered error value is equal to a digital domain operator multiplied by the estimated motor torque minus an actual motor torque, and where the low pass filtered error value includes a communications delay, and where the communications delay is an amount of time between a starting time a control variable value is sent over a controller area network and an ending time a control variable value is received over the controller area network;
- adding the corrected estimated motor torque to an estimated engine torque to estimate driveline torque via the controller;
- and
- adjusting a driveline actuator responsive to the estimated driveline torque via the controller.
2 more elements
A powertrain operating method, comprising:
- via a controller, estimating a motor torque based on a requested motor torque and a motor model;
- correcting the estimated motor torque via adding an error value that has been low pass filtered to the estimated motor torque, the error value being equal to a digital domain operator multiplied by the estimated motor torque minus an actual motor torque;
- adding the corrected estimated motor torque to an estimated engine torque to estimate driveline torque via the controller;
- and
- adjusting a driveline actuator responsive to the estimated driveline torque via the controller.
2 more elements
A system, comprising:
- an engine;
- a motor/generator;
- a motor/generator controller in electrical communication with the motor/generator;
- a disconnect clutch positioned in a powertrain between the engine and the motor/generator;
- a transmission coupled to the motor/generator;
- and
- a vehicle system controller including executable instructions stored in non-transitory memory to align in time an estimated motor torque value and an actual motor torque value output via the motor/generator controller, the estimated motor torque value based on a motor model and a requested motor torque, and additional executable instructions to correct the estimated motor torque value via adding an error value that has been low pass filtered to the estimated motor torque value, the error value being equal to a digital domain operator multiplied by the estimated motor torque value minus the actual motor torque value.
4 more elements
Dependencies are inferred from the claim text.