Patent classifications
B60T2250/04
Single side wheel anti-lock braking method and system based on dual- microcontroller unit (MCU) electronic parking brake (EPB) system
The provided is a single side wheel anti-lock braking method and system based on a dual-microcontroller unit (MCU) electronic parking brake (EPB) system. The method includes the following steps: S1: calculating a real-time single side slip ratio, including a real-time left side slip ratio and a real-time right side slip ratio; S2: comparing the real-time single side slip ratio with a preset locking slip ratio, and adjusting a clamping force and a clamping time step of a rear wheel; S3: comparing a number of single side release commands within a set time with a threshold, and determining a road condition; and S4: executing a braking strategy based on the road condition. With the single side wheel anti-lock braking method and system based on a dual-MCU EPB system, the provided can perform anti-lock control on single side wheels based on real-time wheel speed information and identify road conditions.
Vehicle control device
A vehicle control device includes an information acquirer that acquires information on driving conditions of a vehicle at least containing a steering angle and a vehicle speed; a brake force setter that sets a brake force to each of a plurality of wheels provided in the vehicle based on the driving conditions of the vehicle; and a brake controller that performs brake control for each of the plurality of wheels using the brake force set by the brake force setter, wherein the brake force setter remains the first brake force for the first specific wheel during a turn-over operation while the turn-over operation is performed from the one side steering position through a neutral position to other side steering position.
Brake control apparatus
A brake control apparatus includes a deceleration control part that decelerates a vehicle either in a first brake control mode using a main brake and an auxiliary brake that uses discrete deceleration values, or in a second brake control mode using the main brake without the auxiliary brake, a determination part that determines whether or not occupants in the vehicle are seated in seats of the vehicle, and a selection part that selects the first brake control mode if the determination part determines that the occupants are seated in the seats, and selects the second brake control mode if the determination part determines that the occupant is not seated in the seat.
DRIVING ASSIST APPARATUS, DRIVING ASSIST METHOD AND PROGRAM THEREFOR
A driving assist apparatus includes an acquiring unit that acquires information obtained by sensors and information related to an own vehicle; and an assist unit that performs a driving assist operation of the own vehicle, based on a sensor that detects an intersecting object and a yaw rate of the intersecting object, in which the assist unit executes a first braking control that brakes the own vehicle in the case where the yaw rate of the intersecting object is within a predetermined range and the sensor that detects the intersecting object is at least a front sensor; and executes a second braking control that brakes the own vehicle with a braking force smaller than that of the first braking control in the case where the yaw rate of the intersecting object is within a predetermined range and the sensor that detects the intersecting object is only a lateral sensor.
BRAKE TRACTION CONTROL SYSTEM USING REDUNDANCY BRAKING SYSTEM
A brake traction control system (BTCS) using a redundancy braking system includes a main braking force adjusting device configured to control a hydraulic brake of a vehicle, a sensor unit configured to detect a driving state of the vehicle, an electronic brake electrically operating and configured to generate braking force for at least one driving wheel, and an auxiliary braking force adjusting device configured to control the hydraulic brake and the electronic brake when a failure occurs in the main braking force adjusting device, wherein the auxiliary braking force adjusting device is configured to adjust the braking force of the electronic brake provided on at least one wheel on left and right sides of the vehicle based on a detected value of the sensor unit, wherein the auxiliary braking force adjusting device apply the longer pre-operation time of the electronic brake as a risk level increases, and wherein the risk level is determined based on a gradient ratio of a road on which the vehicle is travelling.
METHOD FOR CONTROLLING A BRAKE SYSTEM, BRAKE CONTROLLER, AND VEHICLE
A method is for controlling a brake system having at least two modulators. A pressure can be modulated via the respective modulator and provided at a connection. The method includes: determining if there is a leak; localizing a detected leak by controlling a modulator with a test signal to change the pressure, and determining a deviation between a target value specified as a function of the signal and an actual value assigned to the connection; if a threshold is exceeded, the line has a leak; controlling a modulator so a flow connection is interrupted between the leaky line and the pressure supply from which the pressure for the connection is modulated; and at a connection to which no line with a located leak is connected, an adjusted pressure is provided, dependent on the braking demand and a deceleration loss from the interruption of the flow connection to the leaky line.
Dynamic braking torque split for optimal thermal management
Typically, mobile equipment with axles has a mechanically fixed or constant split ratio for the braking torque that is applied to each axle. Disclosed embodiments dynamically adjust the braking torque ratio between axles based on real-time parameter values, such as requested braking power and a real-time brake state parameter (e.g., brake temperatures), to more evenly distribute wear or other health imbalances across the brake systems of mobile equipment. Accordingly, disclosed embodiments may extend the longevity of brake systems, reduce the costs of maintenance of mobile equipment, facilitate a more cost-effective brake system that balances health or durability with performance under different operating scenarios, and/or the like.
Electro-mechanical brake system and control method thereof
The disclosure relates to an electro-mechanical brake system including: an electro-mechanical brake configured to generate a braking force in each wheel according to a pedal effect applied to a brake pedal; a brake control unit configured to determine whether a wheel slip has occurred based on a wheel speed sensor values received from wheel speed sensors installed in wheels of a vehicle to set activation or deactivation of Anti-lock Braking System (ABS) control, and activate the ABS control on the electro-mechanical brake according to occurrence of a wheel slip, wherein the brake control unit is configured to obtain a first target wheel torque based on a wheel slip value and a road surface condition upon activation of the ABS control, and obtain a second target wheel torque by recalculating the first target wheel torque based on a communication delay and a mechanical response of the electro-mechanical brake.
EMERGENCY BRAKING FOR AUTONOMOUS VEHICLES
Aspects of the disclosure provide for generation of trajectories for a vehicle driving in an autonomous driving mode. For instance, information identifying a plurality of objects in the vehicle's environment and a confidence value for each of the objects is received. A set of constraints may be generated. That one or more processors are unable to solve for a trajectory given the set of constraints and an acceptable braking limit may be determined. A first constraint is identified as a constraint for which could not be solved and a first confidence value. That the vehicle should apply a maximum braking level is determined based on the identified first confidence value, a threshold, and the determination that the one or more processors are unable to solve for a trajectory. Based on the determination that the vehicle should apply the maximum braking level, the maximum braking level is applied.
Braking system and braking method using the same
A braking system includes a hydraulic brake including a first hydraulic brake provided on one of a front wheel and a rear wheel of a vehicle and a second hydraulic brake provided on the other of the front wheel and the rear wheel of the vehicle, a main braking force adjusting device configured to control braking hydraulic pressure supplied to the first hydraulic brake and the second hydraulic brake, and an auxiliary braking force adjusting device configured to directly control braking hydraulic pressure of the first hydraulic brake when a failure occurs in the main braking force adjusting device, wherein the first hydraulic brake is connected to the main braking force adjusting device via the auxiliary braking force adjusting device.