Dynamic braking

About: Dynamic braking is a research topic. Over the lifetime, 3472 publications have been published within this topic receiving 34897 citations. The topic is also known as: Rheostatic brake.

Method and device for controlling a braking system in open loop

Abstract: A method and a device for controlling a braking system of a motor vehicle in open loop, in which a driver's braking input is converted into setpoint wheel-brake pressures for the individual wheel brakes, and the wheel-brake pressure is adjusted to the setpoint wheel-brake pressure in view of the measured wheel-brake pressure. Various secondary braking operations are initiated as a function of the type of fault. In response to a serious fault such as failure of the electrical energy supply, of the pressure supply, or an electrical fault in the control unit of the braking system, the valve arrangements controlling the wheel-brake pressures are switched over into a currentless state, and in response to a fault in detecting the driver's braking input, only the valve arrangements allocated to the front axle are switched into a currentless state. Furthermore, in response to a fault affecting the ability to build up or reduce pressure at only one wheel, an electrical open-loop control is implemented at only three wheel brakes, and in response to a fault which affects the ability to build up or reduce pressure at only one wheel of an axle without impairing the ability to build up and reduce pressure at this wheel, a shared control of one axle is carried out within the framework of a closed pressure-control loop.

Collision-preventing apparatus for electric motor vehicle

Abstract: A collision-preventing apparatus for an electric motor vehicle in which wheels are driven by electric motors and the electric motors are subjected to braking such as regenerative braking or dynamic braking. The apparatus includes an obstacle sensor and a control unit for processing detected information supplied from the obstacle sensor and for outputting a brake actuation signal when the result of processing indicates a set of conditions predetermined to be dangerous, so as to apply brakes to the electric motors.

Automatic brake system for a vehicle

Abstract: An automatic brake system for a vehicle is disclosed. Based on a possibility that a potential collision with an obstacle preceding the vehicle can avoided by braking, and a possibility that the potential collision can be avoided by steering, the system automatically controls a braking operation for collision-avoidance. A condition of starting the automatic braking operation and a characteristics of the operation are determined based on calculation or estimation of a condition of the path where the vehicle is traveling, such as a relative speed, widths of spaces on sides of the obstacle, and steering characteristics.

Vehicle braking control apparatus

Abstract: A vehicle braking control apparatus is configured to suppress the effect on the vehicle behavior when braking torque is reassigned between the wheels. The distribution of braking torques is reassigned between the front and rear wheels so as to increase the amount of braking carried out by regenerative braking while maintaining a constant total braking torque. When the frictional braking of the one pair of wheels is reassigned to the regenerative braking of the other pair of wheels, the amount reassigned to left and right of the wheels is adjusted in accordance with the steering angle.

Dynamic brake control

Abstract: A dynamic brake control system for an alternating current motor powered by a variable voltage, variable frequency inverter which regulates the speed of the motor An AC to DC converter converts AC line power to DC power with the DC power being transferred to the inverter via a DC link During electrical dynamic braking, the inverter functions to transfer power from the motor to the DC link The torque available to the motor during braking is a function of the receptivity of the DC link Link receptivity controlled by a resistance connected to the link in which the resistance is modulated at a frequency dependent upon the incoming AC line frequency at the converter The modulation is binarily controlled so as to minimize ripple current on the DC link without the necessity of providing high frequency control of the modulating electronics