Patent classifications
B60L15/2027
DISTURBANCE OBSERVER-BASED ELECTRIC VEHICLE CONTROL METHOD DURING DOWNHILL MOTION
Systems and methods for automatically applying braking during downhill motion and performing regenerative braking are provided. The method may comprise determining a state of an acceleration pedal and a braking pedal of a vehicle, when the state of the acceleration and braking pedals is off, setting a set velocity of the vehicle to be equal to a current velocity of the vehicle, determining whether a value of the current velocity minus the set velocity is greater than a threshold velocity of the vehicle, when the value of the current velocity minus the set velocity is greater than the threshold velocity, setting a target velocity of the vehicle equal to a sum of the set velocity and the threshold velocity, and performing, using a brake controller, regenerative braking on the vehicle using a disturbance observer (DOB) structure and a feedback controller to maintain the target velocity.
SMART REGENERATIVE BRAKING CONTROL
A smart braking system for a vehicle is provided. The smart braking system selectively activates a braking system of the vehicle when the smart braking system detects a scenario in which it is likely that a constant vehicle speed, rather than an increasing vehicle speed, would be desired by a driver. In one example, a driver releases an accelerator while the vehicle is on a decline but the vehicle accelerates anyway. In this instance, the smart braking system records the speed of the vehicle when the accelerator is released and applies the braking system to maintain the speed of the vehicle at the recorded speed while the vehicle is on the decline. The smart braking system stops activating the braking system upon detecting that braking is no longer needed to slow down the vehicle.
METHOD FOR OPERATING A VEHICLE
A method for operating a vehicle when stopping the vehicle and/or when holding the vehicle at a standstill, in particular after a failure in a brake system, for example, a brake-by-wire system of the vehicle. The vehicle can have an electric motor. The method has the steps of: carrying out a deceleration, in particular a regenerative deceleration of the vehicle, the deceleration preferably being initiated automatically, and switching the electric motor to an active short-circuit, preferably after a regenerative deceleration of the vehicle in order to prevent the vehicle from rolling.
Electric Vehicle
An electric vehicle includes an electric motor; a travel device driven by power transmitted from the electric motor; a vehicle speed sensor configured to detect a vehicle speed; and a motor controller configured to control the electric motor. The motor controller is configured to perform a stop control in such a manner as to maintain a rotation speed of the electric motor at a predetermined reference rotation speed larger than zero, when the vehicle speed detected by the vehicle speed sensor reaches a predetermined reference vehicle speed or less.
METHOD AND VEHICLE FOR DRIVING CONTROL USING ADAPTIVE REGENERATIVE BRAKING
An embodiment driving control method of a vehicle using adaptive regenerative braking includes receiving a request of a function for adaptive downhill driving for implementing maintenance of a constant speed during downhill driving of the vehicle by the adaptive regenerative braking and a set speed accompanying the request, in response to a vehicle speed during the downhill driving being equal to or higher than an upper limit above the set speed, controlling driving of the vehicle by tuning regenerative braking according to a constant speed mode belonging to a type of the adaptive generative braking to make the vehicle speed converge to the set speed, and in response to the vehicle speed during the downhill driving being equal to or lower than a lower limit below the set speed, controlling the driving of the vehicle by reducing the regenerative braking through release of the constant speed mode.
MOTOR VEHICLE WITH HILL DESCENT CONTROL FUNCTION WHICH CAN BE ENABLED BY A DEDICATED COMMAND AND ENABLEMENT PROCESS OF THE HILL DESCENT CONTROL FUNCTION
A motor vehicle including a steering wheel comprising a touch-sensitive portion, a user interface comprising a control device for triggering an enablement of a hill descent control function, and a control unit coupled to the steering wheel and to the user interface is disclosed. The control unit is configured to detect the enablement of the hill descent control function by the control device and to start the hill descent control function in response to a touch on the touch-sensitive portion by a driver of the motor vehicle, provided that the hill descent control function is enabled.
Method and control arrangement for controlling a speed of a vehicle in a downhill road section followed by an uphill road section
Disclosed is a method for controlling a speed of a vehicle in a downhill road section followed by an uphill road section. The vehicle comprising an electrical machine system for applying braking to the vehicle to maintain a first vehicle speed in the downhill road section and to apply a propelling power in the uphill road section. The method comprising determining whether a temperature of the electrical machine system will exceed a temperature limit in the uphill road section, if maintaining the first vehicle speed in the downhill road section, and if so, reducing the first vehicle speed to a second vehicle speed in the downhill road section such that, in comparison to when the first vehicle speed would have been maintained, the temperature of the electrical machine system is decreased when the vehicle reaches the uphill road section and a travelling time in the downhill road section is increased.
CONTROL STRATEGY TO ENSURE ELECTRICAL ENERGY PULSE USAGE ABILITY DURING DEMANDING ASCENTS AND DESCENTS
A computer system has processing circuitry to acquire terrain data of an upcoming power event for a host vehicle, calculate a total power required for traveling through the upcoming power event provided a target speed for the host vehicle, calculate, by adjusting a speed parameter for the host vehicle at the upcoming power event, a pulse power and pulse time available in the electrical energy storage system of the host vehicle to assist a speed adjusting device of the host vehicle during the upcoming power event to reach the total power, calculate a recovery time window prior to the upcoming power event that allows the electrical energy storage system to provide the pulse power and pulse time at the upcoming power event with the constraint that a thermal limit of the electrical energy storage system at the end of the upcoming power event is not exceeded, provide an output including the recovery time window, the pulse power, and the pulse time.