A weight profile determination system may be provided that includes a sensor and a controller. The sensor may be 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 may be obtained at different times and correspond to different locations along a length of the vehicle system. The controller may determine a weight profile for the vehicle system based on the force measurements generated by the sensor. The weight profile can represent a distribution of weight along the length of the vehicle system. The controller may 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.

Disclosed is a railway braking system including a control device having a valve with a body having a cavity and a slide having an internal chamber, supply notches and drainage notches each having an overall passage cross-section for a pressure medium having a shape exhibiting an apex, and being movably mounted in the cavity, between a supply position where the supply notch is opposite a supply groove of the body, and a drainage position where the drainage notch is opposite a drainage groove of the body; the device being configured to allow a substantially stable control configuration, wherein the pressure value of the medium is limited, and wherein the slide is positioned in the cavity such that a control notch of the slide is opposite a control groove of the body while the supply and drainage notches are respectively at a distance from the supply and drainage grooves.

A brake control valve arrangement includes an electro-pneumatic brake control valve block having a hold valve and a vent valve, a main regulator valve and an emergency and a tare pressure regulator. The valve block has an inlet for a brake supply pressure and an outlet for a brake cylinder, wherein an inlet and a vent pneumatic opening is provided for the hold valve and vent valve. The arrangement also includes a configuration module in pneumatic connection with the brake supply pressure and providing a pneumatic path to the inlet, and a pneumatic path to the vent valve from the brake cylinder, the arrangement also including at least one choke configured to control air flow in pneumatic paths to the inlet opening and vent opening.

A method and a device for determining braking-related actual values of a train assembly including multiple carriages for carrying out a deceleration-controlled braking of the train assembly, in which the longitudinal deceleration and the longitudinal slope are considered to be actual values, from which an adjustment value balancing the control deviation is determined for a control element of the brake by a deceleration controller/deceleration force controller according to a predefined setpoint value of a desired braking deceleration.

The embodiments of the present application disclose an anti-collision method and apparatus for trains in a cooperative formation. The anti-collision method includes: determining whether it is necessary to control the current train to brake; determining whether a real-time distance between the current train and a previous adjacent train in the same formation as the current train is greater than a preset minimum safety distance; controlling, under a condition that the real-time distance is less than the preset minimum safety distance, the current train to perform electromagnetic braking; and calculating, under a condition that the real-time distance is greater than the preset minimum safety distance, a real-time safety distance between the current train and the previous adjacent train, and controlling, under a condition that the real-time distance is less than the real-time safety distance, the current train to brake.

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.

A train compartment brake control method includes: acquiring the number of train compartments of a current train; acquiring the number and type of a current train compartment; and on the basis of a train brake instruction and the number of train compartments of the current train, calculating a braking force of the current train compartment, and performing brake control on the current train compartment. The technical solution described in the present application is applicable to a train having any number of train compartments. The above method acquires the number of train compartments of a train in real time, calculates the braking force required by each train compartment according to the number and type of a current train compartment, and performs brake control on the train.

A control system for wheel-slip prevention in a railway vehicle with a pneumatic brake is provided. The control system comprises an input interface configured to accept a deceleration reference for controlling the pneumatic brake, and a memory configured to store a reference governor providing executable instructions for modifying the deceleration reference upon its violation of a wheel-slip constraint, and configured to store a controller providing executable instructions for mapping the modified deceleration reference to a sequence of control commands for controlling pressure applied by the pneumatic brake. The control system further comprises a processor configured to execute the reference governor to modify the deceleration reference and configured to execute the controller to map the modified deceleration reference to the sequence of control commands. Further, an output interface of the control system is configured to output the sequence of control commands to control the pneumatic brake.

A braking system for a vehicle may include a regulating device disposed between a braking device and a pressure agent source that causes the braking device to move. The regulating device may include a slide having an internal chamber with a supply port, a venting port, and a regulating port opening into the internal chamber and through which a pressure agent from the pressure agent source may flow. The regulating port can be located between the supply port and the venting port. Each of the supply port and the venting port may have a general cross-section for passage of the pressure agent substantially having a shape with at least one apex.

A braking method includes: obtaining a first state information of the vehicle, which includes a vehicle mass and a deceleration required by braking; calculating a braking torque according to the first state information, and controlling the vehicle to output an electric braking torque according to the braking torque; obtaining a current vehicle speed and a mechanical braking application delay time; calculating an electric braking exit speed according to the braking torque required by the vehicle and the deceleration required by braking; calculating a mechanical braking application speed according to the mechanical braking application delay time, the deceleration required by braking, and the electric braking exit speed; and determining whether to control the vehicle to unload the electric braking torque, and whether to control the vehicle to apply a mechanical braking torque according to the current vehicle speed, the electric braking exit speed, and the mechanical braking application speed.