Patent classifications
B60T2270/406
Braking system for test vehicle
An overrunable test vehicle including an electronically-controlled anti-slip braking system for reducing wheel slip during rapid deceleration comprising: a chassis, at least one electric motor connected to a first axle, a hydraulic braking system connected with the chassis and at least a second axle, a rotational speed sensor for determining a rotational speed of a connected axle, a ground speed sensor, and a controller connected with the electric motor, the hydraulic braking system, the rotational speed sensor, and the ground speed sensor. The controller is configured to calculate a difference between the rotational speed of the axle and the ground speed of the chassis to determine a slip threshold of the wheels, actuate the hydraulic brake system to apply a first stopping force, control at least one motor parameter of the electric motor to apply a second stopping force. The first and second stopping forces combined are less than the slip threshold of the wheels such that the chassis rapidly decelerates free of a wheel slip condition.
System and method for sensing brake judder in vehicle
A system and method for detecting brake judder in a vehicle may include storing information related to determining whether judder was generated when a vehicle was braked, and facilitating easy recognition of a vehicle in which judder was generated, on the basis of stored information without performing methods such as a separate driving reproduction test and a disc thickness measurement test when maintaining later.
Automated positive train control event data extraction and analysis engine and method therefor
A system and method for automating workflow and performing root cause analysis for enforcement events is presented. The system can enable accurate detection of an enforcement event and identifies the root cause of such events. The system can provide a user with an interface to monitor the enforcement event by collecting a list of data characterizing the enforcement event, as well as analyze the data to evaluate what is the root cause of the enforcement event. The system can extract critical information from train system logs of the train using an extraction model to generate a window of activity providing an analysis model with a comprehensive scope to analyze the enforcement event. The system can give the user robust and accurate information of the root cause of the enforcement event.
VEHICLE BRAKE CONTROL METHOD, DEVICE, AND STORAGE MEDIUM
A vehicle braking control method. The method portion includes: when a vehicle is in a preset parking state, monitoring state signal of a vehicle system in real time, the vehicle system comprises a service brake system, a reversing assistance system, and a plurality of electronic parking brake systems; determining whether the vehicle meets a preset fault condition according to the state signals of the service brake system, the electric parking brake system and reversing assistance system; activating a non-faulty electronic parking brake system to control the vehicle to park if it is determined that the vehicle meets the preset fault condition. The present disclosure ensures the safety of a vehicle during low-speed remote parking when the vehicle is in a preset parking state, and solves the problem of potential safety hazards caused by having no matching control solution. Also provided are a corresponding device and a storage medium.
Method for monitoring an electromagnetically actuable brake, and vehicle having an electromagnetically actuable brake
In a method for monitoring an electromagnetically actuable brake, which has an energizable coil that interacts with a tractive electromagnet situated so as to be linearly movable, and a vehicle having an electromagnetically actuable brake, the current flowing through the coil is acquired, the acquired current value in particular being conveyed to an evaluation unit, the voltage applied at the coil is intermittently increased, and a relative position of the tractive electromagnet with respect to the coil is determined from the thereby induced current characteristic, in particular the characteristic of the current rise, it is particularly determined from the ascertained position whether the brake is in the applied state or in the released state, the tractive electromagnet in particular is arranged as a permanent magnet or has a permanent magnet.
Method to check for disturbances in an electronically slip-controllable brake system for a motor vehicle
A method is provided to check for presence of gas bubbles in an electronically slip-controllable motor vehicle brake system that includes brake circuits to which wheel brakes are connected, a pressure generator to charge the brake circuits with a brake pressure, and sensors to detect an actuating signal of the pressure generator and measure the brake pressures in the brake circuits. Disturbances are recognized by ascertaining from the signal a setpoint value for a brake pressure to be obtained and comparing it to an actual value of the brake pressure or by determining that an actual volume of the pressurizing medium displaced into the brake circuits, ascertainable from the signal, is greater than a limiting value that is determined for a setpoint value for the pressurizing-medium volume to be displaced into the brake circuits in order to generate the actual value of the brake pressure.
Travel controller adaptive to road inclination or braking performance
A travel controller including an information acquisition part configured to acquire brake state information of a braking device of a host vehicle and an ACC-ECU configured to perform travel control, wherein the travel control includes constant speed travel control and headway travel control. The constant speed travel control is configured to control the host vehicle to travel at constant speed in accordance with a preset target vehicle speed. The headway travel control is configured to control the host vehicle to travel by following another vehicle travelling ahead so that a predetermined inter-vehicle distance in maintained with the other vehicle and the host vehicle travels in accordance with the target vehicle speed. In the ACC-ECU, when a braking performance index of the host vehicle has a “declined value”, a target acceleration of Example 1 takes a reduced value compared to the target acceleration of Comparative Example for a common distance difference.
SYSTEM AND METHOD FOR AUTOMATICALLY STOPPING AN AUTONOMOUS VEHICLE
A system for automatically stopping an autonomous vehicle, in which the autonomous vehicle includes a primary brake and a secondary brake controlled by least one control module or different control modules. The system includes: an error detection module configured to detect an error in the control of the primary brake or the secondary brake by the one control module or the different control modules; and a supplemental control module configured, upon a detected error by the error module, to cause a stop of the autonomous vehicle using the primary brake or the secondary brake.
METHOD AND SYSTEM FOR MODIFYING CHASSIS CONTROL PARAMETERS BASED ON TIRE INFORMATION
Method for updating at least one vehicle model parameter and at least one tire parameter in at least one chassis control unit of a vehicle, based on tire sensor information collected by a tire sensor placed on a tire. The method includes the steps of: collecting tire sensor information; updating the at least one vehicle model parameter based on updating at least one tire parameter, updating one tire parameter being based on the tire sensor information.
ELECTRONIC PARKING BRAKE CONTROL APPARATUS AND METHOD
An EPB (Electronic Parking Brake) control apparatus may include: a first EPB switch of an EPB; a first controller connected to two terminals among the plurality of terminals of the first EPB switch, and configured to calculate a first signal value by combining signals received from the two terminals, and diagnose the state of the first EPB switch according to the first signal value, and a second controller connected to the other two terminals among the plurality of terminals of the first EPB switch, and configured to calculate a second signal value by combining signals received from the two terminals, and diagnose the state of the first EPB switch according to the second signal value.