Provided is an electric brake including: a brake mechanism configured to transmit, based on a braking request, a thrust force generated through drive of an electric motor to a piston configured to move brake pads to be pressed against a disc rotor; and an ECU for rear electric brake configured to control the drive of the electric motor, and to move, in a non-braking state, the piston to a predetermined clearance position at which a clearance between each of the brake pads and the disc rotor is a predetermined amount. The ECU for rear electric brake is configured to drive the electric motor so that a period from generation of the braking request to a start of the pressing of the disc rotor by the brake pads is a predetermined period regardless of a position of the piston at a time when the braking request is generated.

Provided is an electric brake including: a brake mechanism configured to transmit, based on a braking request, a thrust force generated through drive of an electric motor to a piston configured to move brake pads to be pressed against a disc rotor; and an ECU for rear electric brake configured to control the drive of the electric motor, and to move, in a non-braking state, the piston to a predetermined clearance position at which a clearance between each of the brake pads and the disc rotor is a predetermined amount. The ECU for rear electric brake is configured to drive the electric motor so that a period from generation of the braking request to a start of the pressing of the disc rotor by the brake pads is a predetermined period regardless of a position of the piston at a time when the braking request is generated.

A system for vehicle management includes a control signal interface subsystem and a vehicle-mounted subsystem. Each of these subsystems includes an ultra-wideband (UWB) communications component. The subsystems communicate with each other through the UWB components. The vehicle mounted subsystem interfaces with a braking system of the vehicle. The vehicle mounted subsystem determines the distance between it and the control signal interface subsystem based on the time-of-flight of at least one communication between the subsystems. The vehicle-mounted subsystem can cause the braking system of the vehicle to activate if the distance between the vehicle-mounted subsystem and the control signal interface subsystem is less than a threshold.

A control unit for controlling an upstream braking actuator for generating upstream pressure and a downstream braking actuator for controlling braking pressures of four wheels using the upstream pressure is configured to, when a braking pressure of any wheel cannot be reduced, perform backup control so that the target upstream pressure becomes the target braking pressure of the relevant wheel, and is configured to, when performing anti-skid control in a situation where automatic braking and backup control are being performed, control the target upstream pressure such that the target upstream pressure becomes a target upstream pressure for the automatic braking when the target upstream pressure is the target braking pressure for the relevant wheel, and such that the target upstream pressure becomes the target braking pressure for the anti-skid of the relevant wheel when the target upstream pressure is not the target braking pressure of the relevant wheel.

Various examples of a controller, method and system for determining positions of a tractor-trailer vehicle train are disclosed. In one example a tractor controller is manually-initiated or a user-initiated tractor controller and includes an electrical control port for receiving an electrical start signal, and a communications port for receiving data. A processing unit of the tractor controller includes control logic and is in communication with the electrical control port. The control logic is capable of receiving, in response to the electrical start signal, a data signal at the communications port which includes a GPS signal and a unique identification which corresponds to the towed vehicle. At a predetermined response time, the tractor controller determines the position of the towed vehicle in the tractor-trailer vehicle train based on the data received from the towed vehicles.

Techniques for braking an autonomous vehicle include providing a pressurized fluid stream from a plurality of pressurized fluid sources to a plurality of pressure-controlled electronic braking assemblies; providing the pressurized fluid stream from a pressurized fluid control output of a first pressure-controlled electronic braking assembly directly to a pressurized fluid control input of a second pressure-controlled electronic braking assembly; providing the pressurized fluid stream from the second pressure-controlled electronic braking assembly to at least one vehicle brake set; providing sensor output data from one or more vehicle sensors to a plurality of electronic control units; and based at least in part on the sensor output data, controlling at least one of the first or second pressure-controlled electronic braking assemblies to adjust a pressure of the pressurized fluid stream from at least one of the first or second pressure-controlled electronic braking assemblies to the vehicle brake set.

The present invention pertains to a brake system for a vehicle, in particular a wheeled vehicle, comprising a control unit configured to operate the brake system in an automatic retarding control mode and in a brake assist mode, a brake pedal valve, and at least one brake valve unit for actuating a brake actuator. The break valve unit comprises a brake valve for applying pressurized fluid to the brake actuator in response to a control pressure applied to a hydraulic actuator of the brake valve, a blocking valve for controlling application of pressurized fluid from the brake pedal valve to the hydraulic actuator of the brake valve, and a brake pressure control valve for controlling application of pressurized fluid to the hydraulic actuator of the brake valve.

Disclosed is an electronic brake system for a vehicle, the electronic brake system including one or more electronic components, with at least one electronic control unit. The electronic brake system also includes one or more devices for establishing wireless communications. In the electronic brake system, at least one of the devices for establishing wireless communications is integrated within one of the electronic components or in a unit that contains one of the electronic components.

A parking brake controller comprises at least one input for receiving a signal indicative of at least one vehicle factor, a control input for receiving a request to unpark the vehicle, an output for transmitting a control signal to a parking brake valve and control logic. The control logic determines the at least one vehicle factor indicates the vehicle can be unparked, determines an unpark request has been received, and transmits a control signal to the parking brake valve only in response to the unpark request being received while the at least one vehicle factor is being met.

A means for wiring a heavy load vehicle module to connect and disconnect a multiplicity of data cables to conduct and transmit brake signal data to an electronic braking system of the heavy load vehicle module, wherein the electronic braking system comprises a data input to receive the brake signal data and a data output to transmit the brake signal data, and connects among the multiplicity of data cables one data cable to the data input of the electronic braking system and another data cable to the data output of the electronic braking system, and disconnects the remaining data cables, wherein the multiplicity of data cables is greater than or equal to four. Furthermore, an electronic braking system for a heavy load vehicle module, and one such for a heavy load vehicle, with a means for wiring, is described.