초록 ▼

A brake system includes a controllable a pneumatic brake booster, whose control valve can be actuated independently of the driver's will by a solenoid. A control structure consisting of a brake pressure controller and a control valve positioning controller generate signals which represent the electr

A brake system includes a controllable a pneumatic brake booster, whose control valve can be actuated independently of the driver's will by a solenoid. A control structure consisting of a brake pressure controller and a control valve positioning controller generate signals which represent the electrical current to be applied to the solenoid. To be able to use the brake system for the purpose of a control of a deceleration proportionally to the actuation force it is proposed, according to the invention, to use an installation for the generation of a signal, which represents an actuation force applied at the actuation pedal and which is applied, as input variable, to a prefilter, which contains a dynamic model of the actuation unit and whose output variable corresponds to the desired brake pressure and to use a pressure monitor which receives, as input variable, a signal representing the vehicle speed, which contains a dynamic model of the parts of the brake system connected to the actuation unit and of the vehicle behavior and whose output variable represents an estimated actual brake pressure value which is subtracted from the desired brake pressure for the formation of a control difference to be applied to the brake pressure controller.

대표청구항 ▼

[ I claim:] [1.] A brake system for motor vehicles using an actuation unit actuable by an actuation pedal and comprising a pneumatic brake booster and a master brake cylinder, to which wheel brakes are connected, where a control valve of the brake booster can be controlled independently of the actua

[ I claim:] [1.] A brake system for motor vehicles using an actuation unit actuable by an actuation pedal and comprising a pneumatic brake booster and a master brake cylinder, to which wheel brakes are connected, where a control valve of the brake booster can be controlled independently of the actuation pedal by means a solenoid comprising an armature, by means of which a sealing seat of a control valve can be actuated, with a brake pressure controller, which is supplied with a first control difference from a desired brake pressure and an actual brake pressure and which provides an output variable from which, corresponding to a desired armature travel, a signal is subtracted, which corresponds to an actual travel of the armature, and where a second control difference thus generated is applied to a positioning controller which influences the position of the sealing seat, wherein by the positioning controller an output variable is provided which corresponds to an electrical current which is to be applied to the solenoid, wherein an installation for the generation of a signal is provided, which represents an actuation force exerted on the actuation pedal, and which is applied, as input variable, to a prefilter, which contains a dynamic model of the actuation unit and which provides an output variable corresponding to a desired brake pressure, and wherein a pressure monitor is provided, which receives, as input variable, a signal representing a vehicle speed, and which contains a dynamic model of the parts of the brake system connected to the actuation unit and of the vehicle behavior, and wherein the pressure monitor generates an output variable representing an estimated desired brake pressure value, which is subtracted from the desired brake pressure for the formation of the first control difference.