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US 9,296,391 B2Granted
E-drive torque sensing vehicle state estimation methods for vehicle control
AssigneeFord Global Technologies, LLC
InventorsJianbo Lu, Hai Yu, Wei Liang
Life of this patent
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Abstract
Vehicle state estimation methods include measuring torque, using the measured torque to formulate a vehicle state estimation for vehicle control and applying the vehicle state estimation to control the vehicle.
Claims35
A hybrid vehicle control method, comprising:
- providing a processor executing programmed instructions stored in non-transitory memory to determine vehicle states, the determining vehicle states comprising:
- determining a measured torque at a torque actuator location on the vehicle including an electric drive motor, the torque sensed by a torque sensor at the torque actuator location;
- using the measured torque to estimate a road torque/force of at least one wheel of the vehicle, the road torque/force comprising at least one of torque and force applied to the at least one wheel from a ground surface in contact with the at least one wheel;
- using the road torque/force to determined at least one vehicle state estimation;
- and,
- using the processor or another processor to control at least regenerative brake application of the vehicle using the at least one vehicle state estimation the measured torque comprises engine torque in a hybrid mode of the hybrid vehicle.
3 more elements
A vehicle state estimation method, comprising:
- providing a processor executing programmed instructions stored in non-transitory memory by to determine vehicle states, the determining vehicle states comprising:
- determining a measured torque at a torque actuator location on the vehicle including an electric drive motor, the torque sensed by a torque sensor at the torque actuator location;
- using the measured torque to estimate an active wheel torque, the active wheel torque comprising torque transferred from the torque actuator location to at least one wheel of the vehicle;
- using the active wheel torque to estimate a road torque/force of at least one wheel of the vehicle, the road torque/force comprising at least one of torque and force applied to the at least one wheel from a ground surface in contact with the at least one wheel;
- using the road torque/force to determined at least one vehicle state estimation,
- the at least one vehicle state estimation including at least one of the following:
- longitudinal accelerometer offset compensation estimation,
- vehicle loading estimation,
- brake effort estimation,
- brake balancing estimation,
- regenerative brake redistribution estimation,
- brake lining friction coefficient estimation,
- acceleration reconstruction estimation, and
- enhanced wheel slip control estimation;
- and
- using the processor or another processor to apply the at least one vehicle state estimation to control at least regenerative brake application of the vehicle.
13 more elements
A vehicle state estimation method, comprising:
- providing a processor executing programmed instructions stored in non-transitory memory by to determine vehicle states, the determining vehicle states comprising:
- obtaining a measured torque in response to sensing a torque at a torque actuator location including an electric drive motor and determining at least one of the following:
- actuation torque, braking torque, automatic transmission torque, engine torque and wheel torque;
- using the measured torque to formulate a vehicle state estimation for vehicle control, the vehicle state estimation including at least one of the following:
- longitudinal accelerometer offset compensation estimation,
- vehicle loading estimation, brake effort estimation,
- brake balancing estimation,
- regenerative brake redistribution estimation,
- brake lining friction coefficient estimation,
- acceleration reconstruction estimation and
- enhanced wheel slip control estimation;
- and
- using the processor or another processor to apply the vehicle state estimation to control at least regenerative brake application of the vehicle.
10 more elements
Dependencies are inferred from the claim text.