The subject of the application has a fuzzy controller which forms a pressure rate of change as a function of a wheel slip, a wheel acceleration, a locking pressure and a ratio between the actual pressure and the locking pressure. The rate of change is supplied, via an integrating unit, to an actuator of an electromechanical braking system. The locking pressure can thereby be adapted dynamically as a function of the wheel slip. Optimal antilock braking control for electromechanical braking system...

A piping cleaning system switches over a four-way switching valve 43 of a heat pump circuit 200 so that two transfer heat exchangers 25, 26 are operated alternately as a cooling device and a heating device, by which a cleaning refrigerant in a cleaning circuit 2 is circulated through a gas line 3 and a liquid line 5. During this cleaning operation with the cleaning refrigerant circulated, when the cleaning refrigerant runs short in amount, a solenoid valve SV3 is opened so that cleaning refriger...

The release device for multiple release compressed air brakes of railborne vehicles comprises a pressure reduction valve (12) which responds in the case of rapid brake applications and optionally of full brake applications, which in order to facilitate the brake release procedure and to accelerate the pressurization of the brake cylinder (13) feeds compressed air from the reference pressure chamber of the triple pressure control valve (2) into the brake cylinder (13). In addition, a sensor valve...

A release graduating valve for freight brake control is provided for a railcar having a pneumatic control valve, emergency and auxiliary reservoirs each normally charged with pressurized fluid from a brake pipe and a fluid pressure activated brake cylinder device for applying the brakes on the railcar. A selectively operable release graduating valve can include a graduated release valve and a changeover valve which selectively interposes the graduated release valve to exhaust brake cylinder pres...

In assistance function evaluation apparatus and method for a vehicle dynamics control system, the vehicle dynamics control system being an object to be evaluated, a simulator is provided to obtain a data base when the vehicle dynamics control system is operated, a vehicle model, a road surface environment model, and a driver model that calculates a steering angle imposed on the vehicle model to trace a target course are provided, the simulator comprises a driver intention quantity detecting sect...

A release graduating valve for freight brake control is provided for a railcar having a pneumatic control valve, emergency and auxiliary reservoirs each normally charged with pressurized fluid from a brake pipe and a fluid pressure activated brake cylinder device for applying the brakes on the railcar. A selectively operable release graduating valve can include a graduated release valve and a changeover valve which selectively interposes the graduated release valve to exhaust brake cylinder pres...

A system and method are disclosed for canceling the leakage from a speaker.

A refrigeration system includes an outdoor unit having a refrigeration compressor and a heat exchanger, and an indoor unit having a heat exchanger to be placed where air conditioning is desired. In installing the refrigeration system, the outdoor unit is first connected with the indoor unit via pipe lines, and an air absorbing device containing zeolite as an adsorbent is subsequently placed on the outdoor unit, the indoor unit, or the pipe lines to remove air. The air absorbing device is then se...

In a matrix-shaped configuration of memory transistors, word lines are disposed on a top side of a semiconductor body and are parallel to one another. Bit lines run transversely with respect thereto and are formed by polysilicon strips which are applied on the top side and are isolated from the semiconductor body by barrier layers functioning as diffusion barriers.

In a full-wave rectifying circuit comprising a differential amplifier (20) differentially amplifies an input alternating current signal (V.sub.IN) to produce first and second amplified output voltages (V.sub.O1, V.sub.O2) and a voltage reference circuit (30) for generating a reference voltage (V.sub.REF), a differential pair circuit (40) carries out half-wave rectification on the first and the second amplified output voltages on the basis of the reference voltage to obtain first and second half-...