A braking capacity decrease determining device including a brake ECU is applied to a vehicle including wheel speed sensors and a brake device. The brake ECU performs a first determination process of determining whether a temporary braking decrease determination condition is satisfied for each of a plurality of wheels provided on the vehicle. The brake ECU additionally performs a second determination process of determining whether there are both a wheel for which the temporary braking decrease determination condition is satisfied and a wheel for which the temporary braking decrease determination condition is not satisfied out of the plurality of wheels and determining that a braking capacity of the brake device has decreased when it is determined that there are both a wheel for which the temporary braking decrease determination condition is satisfied and a wheel for which the temporary braking decrease determination condition is not satisfied.

Provided is an electric vehicle control system capable of securing good response and slip stopping property with respect to changes in a road surface condition. The system includes a vehicle controller configured to calculate a driver's demand torque command value according to a driver's accelerating or braking operation, a first communication device capable of communicating between a hydraulic controller and a motor controller, and a second communication device capable of communicating between the vehicle controller and the motor controller. The system includes a control system in which the hydraulic controller transmits a motor torque command value to the motor controller through the first communication device; the vehicle controller transmits the driver's demand torque command value to the motor controller through the second communication device; and the motor controller selects either one of the received motor torque command value and the received driver's demand torque command value as the command value.

The system (1) for piloting an electric motor in electric motorcycles or the like is operatively connectable to a control inverter (I) of an electric motor (E) of an electric motorcycle (M) and to a control device (C) of the acceleration of the electric motorcycle (M) and comprises dynamic generation means (10) of a piloting signal (T.sub.OUT) of the inverter (I) according to a control signal (G) coming from the control device (C) and to at least a maximum deliverable/absorbable current value (I.sub.MAX, RI.sub.MAX) by an electric battery (B) of the electric motorcycle (M).

A method controls regenerative braking of a vehicle equipped with regenerative brakes and with a separate braking apparatus. The method is designed to generate a regenerative braking setpoint as a function of a braking request signal coming from a driver pedal of the vehicle, according to a first setpoint generation mode. The method includes receiving a flag signal coming from an active safety system of the vehicle, detecting value changes of the received flag signal, when the received flag signal changes value to take a value corresponding to activation of regulation by the active safety system, incrementing a counter value, and comparing the counter with a threshold. When the counter reaches the threshold, a control signal is formed to end the generation of the regenerative braking setpoint according to the first calculation mode and to impose generation of the regenerative braking setpoint according to a second calculation mode.

A traveling control apparatus includes an operation amount calculating unit for calculating the amount of operations for controlling at least one of a driving mechanism and a braking mechanism of a vehicle to make the difference between a target position and the actual position of the vehicle small; a determining unit for determining whether the actual position follows the target position; and a target position setting unit for setting the target position that changes with time passage, when it is determined by the determining unit that the actual position follows the target position. The target position setting unit sets the target position so a change in the target position with the time passage becomes smaller than that in the case where it is determined that the actual position follows the target position, when it is determined by the determining unit that the actual position does not follow the target position.

An electric vehicle controller includes an inverter that drives a motor by receiving power supplied from an overhead line, a brake chopper circuit that includes a switching device and a braking resistor and is connected in parallel with the inverter, a voltage detector that detects a bus voltage applied to DC buses, and a control unit that performs power consumption control of causing the braking resistor to consume regenerative power supplied from the motor and overvoltage suppression control of suppressing the bus voltage from being excessive. The control unit controls the switching device such that a second duty ratio used at the time of performing the overvoltage suppression control is lower than a first duty ratio used at the time of performing the power consumption control.

A vehicle and a method for controlling the vehicle are provided. The vehicle may include a battery; and a motor configured to generate a driving force by using the electric power charged in the battery, perform a regenerative braking, and charge the battery through the regenerative braking. The vehicle identifies destination information entered in the input during the preparation of charging at the charging station, searches for a route from the charging station to the destination based on the position information of the charging station and the position information of the destination, acquires the charging amount by regenerative braking based on the road information in the searched route and the table, and stops controlling the charging of the battery when the charging amount charged in the battery is charged by the regenerative braking during charging of the battery at the charging station.

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.

A motor driving device includes an abnormality detecting portion arranged to detect an abnormality of one of a plurality of position detection signals based on outputs from a plurality of Hall sensors arranged to detect a rotor position of a brushless DC motor, a measuring portion arranged to measure time between neighboring edges of a normal position detection signal when the abnormality detecting portion detects an abnormality, and a drive control portion arranged to control a drive signal for driving the brushless DC motor based on a latest time measurement result of the measuring portion.

A device is described for receiving and dispensing hydraulic fluid, in particular for a hybrid or electric vehicle, having a cylinder, a piston, which is movable in the cylinder for receiving and dispensing hydraulic fluid, and a drive unit; a ramp mechanism being provided, having at least one ramp on which at least one rolling element rolls for moving the piston, the ramp mechanism being situated between a face of the piston and a face of a gearwheel driven by the drive unit.