Systems and methods for charging an electric bus having a charging interface on its roof may include determining that an approaching bus is supposed to be charged at the charging station, lowering the charging head of the charging station to land on the roof of the bus, and moving the bus with the charge head on its roof to engage the charging head with the charging interface.

Provided are a brake system, a brake device, and a method of controlling brakes for railroad cars in which control can be multiplexed with a simple configuration. In a brake system 1 for railroad cars includes brake control devices 11, 12, 13 provided in railroad cars 101, 102 103 respectively that form a unit 104. Each brake control device 10 (11, 12, 13) is capable of outputting information of the corresponding car (101, 102, 103) to the other brake control devices 10 through a transmission device 20. The brake control device 10 can calculate a total necessary braking force value BRA required for braking all of the cars 101, 102 103 using the information output from the other brake control devices 10 to the transmission device 20.

A braking control system includes a regenerative brake controller, a friction brake controller, and a master controller. The regenerative brake controller, in response to absence of expected communication between the master controller and regenerative brake controller, decreases regenerative braking. The master controller, in response to detecting the decrease in regenerative braking, commands the friction brake controller to increase friction braking.

An apparatus for braking a vehicle includes wheel brakes configured to generate a braking force on each of wheels, a first actuator for supplying a braking force to the wheel brakes by using a first motor and a first master cylinder, a second actuator for supplying a braking force to the wheel brakes by using a second motor and a second master cylinder, a first electronic control unit (ECU) for controlling the first actuator and determining normal or faulty operation of the first and second actuators, and a second electronic control unit (ECU) for controlling the second actuator and determining the normal or faulty operation of the first and second actuators. When the first ECU and the second ECU are determined to be normal, the first ECU controls to brake some of the wheel brakes, and the second ECU controls to brake a remainder of the wheel brakes.

According to at least one embodiment, the present disclosure provides an electrohydraulic brake system including main brake assemblies, electronic parking brakes (EPBs), a main control unit, and a redundancy control unit (RCU). The main brake assemblies generate a braking force in one or more front wheels and one or more rear wheels of a vehicle. The electronic parking brakes (EPBs) generate a braking force to one of the front wheels and rear wheels. The main control unit is configured to control the operation of the main brake assembly. The redundancy control unit (RCU) is configured to control the operation of the electronic parking brake. Here, the redundancy control unit performs, upon determining that a malfunction occurs in a braking function of the main control unit, a slip control on the vehicle by using the electronic parking brake based on signals from one or more wheel speed sensors.

Systems and methods for charging an electric bus having a charging interface on its roof may include determining that an approaching bus is supposed to be charged at the charging station, lowering the charging head of the charging station to land on the roof of the bus, and moving the bus with the charge head on its roof to engage the charging head with the charging interface.

An in-vehicle system includes a main battery, a sub-battery, a brake system that is connected to the main battery and also is connected to the sub-battery through one semiconductor relay, a diagnostic unit that performs diagnosis of the brake system, and a control unit that controls the sub-battery. The diagnostic unit is configured to perform notification regarding a diagnosis start of the brake system to the control unit, the control unit is configured to perform discharge control of the sub-battery, based on the diagnosis start notified from the diagnostic unit, and is configured to set voltage of a first terminal of the semiconductor relay to which the sub-battery is connected, such that the voltage of the first terminal is higher than voltage of a second terminal of the semiconductor relay to which the brake system is connected.

This power supply device is provided with: a primary power supply system for supplying power to a motor for rotary-driving a running wheel; a voltage converter unit for converting voltage by being supplied with a part of the power from the primary power supply system; a secondary power supply system for supplying electric power converted by the voltage converter unit to a steering device; and a primary backup power supply for supplying power to the voltage converter unit. The primary backup power supply makes it possible to supply the power to the voltage converter unit when the voltage of the power detected by a VD of the primary power supply system becomes smaller than a predetermined value.

A system and method for operating a transport refrigeration system including: a trailer system including a vehicle connected to a transport container; an electric generation device operably connected to a wheel axle of the trailer system, the electric generation device configured to rotate at an operating frequency, and to generate electrical power from the rotational energy of the wheel axle for charging an energy storage device when the electric generation device is activated; an energy management system for providing power to the transportation refrigeration unit of the trailer system, the energy management system including an energy controller in communication with at least one of the electric generation device and the energy storage device, wherein the energy controller is configured to modify the operation of the electric generation device when the operating frequency of the electric generation device is equal to or less than an energy controller operating limit.

An electric vehicle control method for controlling a motor based on a torque command value in an electric vehicle includes: a disturbance torque estimation process of calculating a disturbance torque estimation value including an influence of a road surface gradient; a speed parameter acquisition process of acquiring a speed parameter relating to a vehicle speed; and a vehicle state control including a stop process of calculating a stopping basis torque target value so as to converge the torque command value to the disturbance torque estimation value in accordance with a decrease in the speed parameter, and a vibration damping process of calculating a stopping correction torque target value by performing filtering on the stopping basis torque target value.