Patent classifications
B60T8/17
AIRCRAFT BRAKING METHOD COMPRISING A DYNAMIC CORRECTION OF THE BRAKING COMMAND
Method for braking at least one wheel of an aircraft, the wheel being provided with a brake having at least one braking actuator, comprising the steps of: generating a braking command (C.sub.om) on the basis of a braking setpoint (C.sub.f); estimating a wheel speed; applying a dynamic correction to the braking command, the dynamic correction being a function of the braking command and of the wheel speed (V(t)), the dynamic correction comprising the step of producing a corrected braking command (C.sub.corr) which is greater than the braking command when the wheel speed is greater than or equal to a predetermined speed threshold, and then the step of reducing the correct braking command when the wheel speed becomes less than the predetermined speed threshold, with the result that the corrected braking command becomes less than the braking command.
Method for actuating a parking brake system and parking brake system
A method for actuating a parking brake system of a vehicle with at least three brake calipers associated with one or more axles of the vehicle is described. The method may include the following steps: providing at least one detection device for detecting the vehicle status, acquiring a value of the vehicle status with the detection device, comparing the detected value with a reference value of the vehicle status, and actuating two brake calipers of the at least three brake calipers if the detected value is lower than the reference value or actuating all the at least three brake calipers if the detected value is equal to or greater than the reference value.
Method for actuating a parking brake system and parking brake system
A method for actuating a parking brake system of a vehicle with at least three brake calipers associated with one or more axles of the vehicle is described. The method may include the following steps: providing at least one detection device for detecting the vehicle status, acquiring a value of the vehicle status with the detection device, comparing the detected value with a reference value of the vehicle status, and actuating two brake calipers of the at least three brake calipers if the detected value is lower than the reference value or actuating all the at least three brake calipers if the detected value is equal to or greater than the reference value.
Braking control device for vehicle
This braking control device pumps a brake fluid from a reservoir to each wheel cylinder by one fluid pump and includes an electric motor which drives the fluid pump; and a controller which controls the electric motor. The controller calculates a target fluid pressure on the basis of at least one among the vehicle wheel speed, the vehicle deceleration state, and the turning state of the vehicle, calculates a target discharge amount for the fluid pump on the basis of the target fluid pressure, and controls the electric motor on the basis of the target discharge amount. The controller has a front wheel calculation map of the relationship between the fluid pressure and the inflow volume of the brake fluid corresponding to a front wheel cylinder, and a rear wheel calculation map corresponding to a rear wheel cylinder, and calculates the target discharge amount on the basis of the maps.
Braking control device for vehicle
This braking control device pumps a brake fluid from a reservoir to each wheel cylinder by one fluid pump and includes an electric motor which drives the fluid pump; and a controller which controls the electric motor. The controller calculates a target fluid pressure on the basis of at least one among the vehicle wheel speed, the vehicle deceleration state, and the turning state of the vehicle, calculates a target discharge amount for the fluid pump on the basis of the target fluid pressure, and controls the electric motor on the basis of the target discharge amount. The controller has a front wheel calculation map of the relationship between the fluid pressure and the inflow volume of the brake fluid corresponding to a front wheel cylinder, and a rear wheel calculation map corresponding to a rear wheel cylinder, and calculates the target discharge amount on the basis of the maps.
Driving assistance apparatus
A driving assistance apparatus is configured to provide deceleration assistance of decelerating a host vehicle, and is configured to end the deceleration assistance on condition that a pedal operation is performed by a driver while the deceleration assistance is provided. The driving assistance apparatus is provided with: an estimator configured to estimate an operation intention of the driver associated with an operation of a brake pedal, on condition that the brake pedal is operated by the driver while the deceleration assistance is provided; and a controller programmed to delay timing in which a deceleration assistance amount associated with the deceleration assistance becomes zero at the end of the deceleration assistance, if the estimated operation intention is caused by the target, in comparison with that if the estimated operation intention is not caused by the target.
Weight profile determination system
A weight profile determination system includes a sensor and a controller. The sensor is disposed along a route and configured to generate a plurality of force measurements of a vehicle system moving on the route relative to the sensor. The force measurements are obtained at different times and correspond to different locations along a length of the vehicle system. The controller is configured to determine a weight profile for the vehicle system based on the force measurements generated by the sensor. The weight profile represents a distribution of weight along the length of the vehicle system. The controller is configured to communicate the weight profile to one or more of the vehicle system or an offboard device for controlling movement of the vehicle system based on the weight profile.
Systems and method for determining running clearance brake command for a brake system
The present disclosure provides a brake system including (a) a brake stack, (b) a force member moveable between a retracted position and an extended position in response to a brake command, wherein the force member contacts the brake stack in the extended position, and wherein the brake system includes a running clearance defined by a distance between the brake stack and the force member in the retracted position, (c) a sensor in communication with the brake stack to measure a force between the force member and the brake stack in response to the brake command, and (d) a brake control unit configured to determine a running clearance brake command defined as a percentage of a maximum braking force that causes the force member to contact the brake stack, wherein the running clearance brake command is determined based on the force measured by the sensor for a plurality of brake commands.
TRAILER BRAKE CONTROLLER AND ITRM BOO INTERFACE
A trailer brake system may include a trailer brake controller comprising a manual braking control, and a trailer light controller; where the trailer brake controller comprises a brake on/off relay, which responds to the manual braking control.
VEHICLE-BASED ALGORITHM FOR FINDING THE TRAILER BRAKE OPTIMUM GAIN
A method for finding an optimum trailer gain, comprising: applying trailer brake pulses to a trailer while a vehicle is coasting using a trailer brake of a trailer, wherein the trailer is coupled to the vehicle; monitoring an average deceleration of the vehicle and the trailer brake gain of the trailer brake pulses applied to the trailer while the vehicle is coasting; generating a graph of the average deceleration of the vehicle versus the trailer brake gain, wherein the graph includes a curve that illustrates a relationship between the average deceleration of the vehicle and the trailer brake gain of the trailer brake pulses applied to the trailer while the vehicle is coasting; and finding a bend point of the curve in the graph to determine an optimum trailer brake gain.