Patent classifications
B60L15/20
SYSTEM AND METHOD IN DATA-DRIVEN VEHICLE DYNAMIC MODELING FOR PATH-PLANNING AND CONTROL
Operation and motion control, by a vehicle's ADAS or AD features, is improved in ways suitable to EVs having higher driving and handling performance. The vehicle dynamic model for high rates of lateral acceleration (e.g., sharp cornering or taking curves having a small radius of curvature as faster speeds) is improved by one or more of optimizing time cornering stiffness with a sigmoid function and/or altering front/rear steering angle to account for roll steer and compliance steer, based on vehicle testing. Indicators for lane departure warning or collision warning, evasive steering, or emergency braking are therefore reliably extended to allow higher performance maneuvers.
METHOD FOR DETERMINING COASTING TORQUE, STORAGE MEDIUM AND ELECTRONIC DEVICE
A method for determining a coasting torque, a storage medium, and a computer program are provided, this method includes: obtaining operating parameters of an electric vehicle when a fuel cell system of the electric vehicle is out of operation and the electric vehicle enters a coasting state; determining a theoretical recovery torque and a correction torque of the electric vehicle according to the operating parameters, where the correction torque includes an additional torque of the fuel cell system; and correcting the theoretical recovery torque according to the correction torque to obtain the coasting torque of the electric vehicle. The coasting torque is used for energy recovery of the electric vehicle during a coasting process of the electric vehicle.
METHOD FOR OPERATING AN ELECTRIC DRIVETRAIN FOR A WORKING MACHINE, ELECTRIC DRIVETRAIN FOR A WORKING MACHINE, AND WORKING MACHINE.
A method for operating an electric drivetrain of a working machine is provided wherein, the drivetrain includes a work drive with a hydraulic work device and an electric work motor, and a travel drive with an electric travel motor. The method includes operating the work drive independently of the travel drive, and supplying a power demanded by the work drive taking into account an efficiency of the work motor and an efficiency of the work device.
METHOD FOR OPERATING AN ELECTRIC DRIVETRAIN FOR A WORKING MACHINE, ELECTRIC DRIVETRAIN FOR A WORKING MACHINE, AND WORKING MACHINE.
A method for operating an electric drivetrain of a working machine is provided wherein, the drivetrain includes a work drive with a hydraulic work device and an electric work motor, and a travel drive with an electric travel motor. The method includes operating the work drive independently of the travel drive, and supplying a power demanded by the work drive taking into account an efficiency of the work motor and an efficiency of the work device.
VEHICLE OPERATION MANAGEMENT METHOD, VEHICLE OPERATION MANAGEMENT DEVICE AND NON-TRANSITORY COMPUTER READABLE RECORDING MEDIUM STORING VEHICLE OPERATION MANAGEMENT PROGRAM
A maintenance time acquisition unit acquires a periodic inspection and maintenance time determined in advance for each of a plurality of electric vehicles, a battery remaining life prediction unit predicts a remaining life of each of storage batteries from a state of the storage battery of each of the plurality of electric vehicles, and an operation plan creation unit creates an operation plan of the plurality of electric vehicles based on the periodic inspection and maintenance time of each of the plurality of electric vehicles and the remaining life of the storage battery of each of the plurality of electric vehicles.
Electric vehicle control device and electric vehicle
This electric vehicle control device is provided with: an efficiency control unit which, during travel of the electric vehicle, in a state in which the battery is prone to deteriorate, increases the rate of consumption of the power charged in the battery by performing control for reducing the efficiency of the motor; a travelable distance calculation unit which calculates the travelable distance of the electric vehicle using the SOC of the battery and a travel coefficient; and a travel coefficient correction unit which, before and after the efficiency control unit performs control for reducing the efficiency of the motor, corrects the travel coefficient such that change in the travelable distance calculated by the travelable distance calculation unit is reduced.
BACKLASH VIBRATION REDUCTION APPARATUS AND METHOD
Disclosed are a backlash vibration reduction apparatus and method capable of sufficiently performing gear alignment even when torque is increased while a vehicle is driven within a low torque range, thereby minimizing rough vibration due to backlash. The backlash vibration reduction apparatus includes a correction determination unit configured to determine whether it is necessary to correct a torque gradient to be applied for an increase to target torque in the state in which the current torque of a vehicle is retained within a predetermined low torque range and a torque gradient correction unit configured to determine a corrected torque gradient in which a torque increase rate per hour is reduced and a torque increase time period is extended by multiplying a correction factor by a first torque gradient as a torque gradient that increases the current torque upon determining that it is necessary to correct the torque gradient.
BACKLASH VIBRATION REDUCTION APPARATUS AND METHOD
Disclosed are a backlash vibration reduction apparatus and method capable of sufficiently performing gear alignment even when torque is increased while a vehicle is driven within a low torque range, thereby minimizing rough vibration due to backlash. The backlash vibration reduction apparatus includes a correction determination unit configured to determine whether it is necessary to correct a torque gradient to be applied for an increase to target torque in the state in which the current torque of a vehicle is retained within a predetermined low torque range and a torque gradient correction unit configured to determine a corrected torque gradient in which a torque increase rate per hour is reduced and a torque increase time period is extended by multiplying a correction factor by a first torque gradient as a torque gradient that increases the current torque upon determining that it is necessary to correct the torque gradient.
LOADING ESTIMATION FOR ELECTRIC VEHICLE
A vehicle control system includes a power inverter circuit configured to power an electric motor; an inertial measurement sensor; and a load determination circuit communicably coupled to the power inverter circuit and the inertial measurement sensor. The load determination circuit is configured to (i) receive an indication of vehicle torque from the power inverter circuit, (ii) receive an indication of acceleration from the inertial measurement sensor, and (iii) determine a mass of a vehicle based on the indication of vehicle torque and the indication of acceleration.
DYNAMIC TORQUE ALLOCATION AND STABILITY CONTROL FOR ELECTRIC VEHICLE
A vehicle control system includes a vehicle sensor, a first power inverter circuit, a second power inverter circuit, and a torque control unit communicably coupled to each of the vehicle sensor, the first power inverter circuit, and the second power inverter circuit. The vehicle sensor is configured to monitor a steering input to the electric vehicle. The torque control unit is configured to (i) determine a stability factor based on the steering input, and (ii) reallocate power exchanged with the first power inverter circuit and the second power inverter circuit based on the stability factor.