Knorr-bremse Systeme Fur Schienenfahrzeuge Gmbh

Knorr-bremse Systeme Fuer Nutzfahrzeuge Gmbh

Ulf Friesen

Josef Staltmeir

Ralf Furtwängler

Thomas Wagner

Manfred Vohla

Jörg-Johannes Wach

Christoph Tomberger

Thomas Burkhart

Erich Fuderer

Marc-Oliver Herden

Reinhold Mayer

Peter Wolfsteiner

Johannes Schuhmacher

Falk Hähle

Marc-Gregory Elstorpff

Claus Müller

Thomas Rasel

Stefan Aurich

Stefan Schneider

Michael Schubert

Peter Waldmann

Rupert Lang

Frank Günther

Andrea Etzbach

Rita Krug

Werner Machane

Gerhard Stahlbauer

Fabian Hauss

Dirk Deeken

Norman Kreisel

Roland Voigtländer-Tetzner

Josef Schmucker

Marc Oliver Herden

Jörg Johannes Wach

Stefan Sedlmair

Michael Amft

Johannes Dipl-Ing Schuhmacher

Jörg-Johannnes Wach

Sebastian Schmidt-Eckert

Pier Enrico Ardemagni

Lorenzo Sternardi

Bernhard Zwilling

Miriam Gruber

Frank GÜNTHER

Sebastian Rehberger

Michael Stanko

Ralf FURTWÄNGLER

Frank Gunther

Jorg-Johannes Wach

Wolfgang Widl

Ferenc Szekely

Miklos Kremer

A method and device monitor and influence the thermal state of a friction brake system of a rail vehicle on the basis of a calculated or estimated predictive friction element temperature of at least one friction element of the friction brake system. The method detects at least one parameter which characterizes the current driving operation situation of the rail vehicle; calculates, estimates, or determines a first temperature component of the predictive friction element temperature based on the current driving operation situation of the rail vehicle; and takes into consideration a first temperature component while monitoring and influencing the thermal state of the friction brake system.

Method and device for monitoring and influencing the thermal state of a friction brake system of a rail vehicle

A brake system, brake regulating method and device for a rail vehicle use an input for a target deceleration value (ä), an input for an actual deceleration value (a), and an output for a deceleration control variable value. The deceleration control variable value (a) is set by a regulating unit to minimize a deviation between the actual deceleration value (a) and the target deceleration value (a). The brake regulating device uses a limiting device, which limits the deceleration control variable value (a) independently of the regulating unit such that the deceleration control variable value (a) deviates from the target deceleration value (a) maximally by a maximum negative control stroke to lower values or maximally by a maximum positive control stroke to higher values. The invention additionally relates to a braking method and a brake system for a rail vehicle.

Brake regulating device, braking method, and brake system for a rail vehicle

A method and equipment determine braking-relevant actual values for a train composed of a plurality of wagons, in particular a rail vehicle, for the performance of controlled-retardation braking of the train, in which at least the longitudinal retardation is taken into account as an actual value, from which, using a retardation controller, in accordance with a predefined target value of a desired break retardation, an actuating value compensating for the control deviation is determined for an actuator of the brake, in that the longitudinal retardation is measured by a plurality of retardation sensors positioned along the train in at least two different wagons to determine the respective local longitudinal retardation, the longitudinal retardation based on the entire train then being calculated as an actual value by a central measured value detection unit.

Method and equipment for determining braking-relevant actual values of a rail vehicle for the performance of controlled-retardation braking with distributed sensors

Disclosed embodiments relate to a method for calibrating a coordinate system of a multi-axis deceleration sensor in a rail vehicle, including calibrating the vertical axis of the sensor to the vertical axis of the vehicle, measuring the acceleration along the longitudinal and transverse axis of the sensor during a braking process of the rail vehicle at a low speed and at a standstill over a time curve, determining an offset vector at a standstill, the offset vector consisting partly of a component in the longitudinal direction and partly of a component in the transverse direction of the sensor and representing the influence of the gravitational acceleration on the measured acceleration of the rail vehicle, and ascertaining at least one resulting acceleration vector of the coordinate system of the sensor about the vertical axis of the sensor such that the at least one resulting acceleration vector faces the vehicle longitudinal direction.

Method for calibrating the orientation of an acceleration sensor provided in a vehicle

A method for improving the adhesion of a rail vehicle by conditioning selected axle(s), detects whether a higher total brake force can be achieved by changing the manipulated variable of the wheel slip at at least one unit from a current starting wheel slip to a forced wheel slip, and, if so, changes the wheel slip at at least one unit from the current starting wheel slip to the forced wheel slip by regulating the manipulated variable of the brake application force at the unit, whereby the friction ratios between the wheel and the rail changes at the subsequent units, and regulates the manipulated variable of the brake application force at the subsequent units to regulate the wheel slip, which is likewise changed by the changed friction ratios, at the units back to the unchanged manipulated variable of the starting wheel slip, optimized brake forces being produced at the units.

Method for improving the adhesion of a rail vehicle by conditioning selected axle(s)

A method and a device for determining braking-related actual values of a train assembly including multiple carriages for carrying out a deceleration-controlled braking of the train assembly, in which the longitudinal deceleration and the longitudinal slope are considered to be actual values, from which an adjustment value balancing the control deviation is determined for a control element of the brake by a deceleration controller/deceleration force controller according to a predefined setpoint value of a desired braking deceleration.

Method and device for determining braking-related actual values of a rail vehicle for carrying out a deceleration-controlled braking with a central sensor system

The invention relates to a method for determining a critical driving situation of at least one wheel of a rail vehicle, wherein a characteristic value of a fluctuation strength of a raw speed signal of at least one wheel is determined, and wherein, for the purpose of evaluating the driving situation, said characteristic value is compared with criteria which describe a critical driving situation. Upon detection of a critical driving situation, the method provides that an action is triggered in the rail vehicle, wherein the method is designed in such a way that it can be combined with or make use of a sensor system and processing devices as found in a modern rail vehicle.

Method and control unit for detection of derailment on the basis of wheel speed signals

A braking system for a rail vehicle includes a target value generator for the target value of the overall braking power, a controller for determining at least one manipulated variable value on the basis of the target value and at least one actuator which transmits the manipulated variable value to the at least one braking device. The system at least approximately determines acceleration components of the rail vehicle and determines the actual value of the total braking power from the acceleration components while taking the vehicle speed and the vehicle mass into consideration. The controller is designed to control the manipulated variable value such as to reduce the control deviation between the target value and the determined actual value.

Braking system for a rail vehicle

A method for estimating the temperature (T) of a wheel bearing of a wheelset of a rail vehicle by means of a calculation model (Testimator). The calculation model (T,estimator) estimates the temperature of the axle bearing, according to the speed (v) and the ambient temperature (T) of the rail vehicle as input variables of the calculation model (Testimator), and the temperature of a component of the wheelset, different from the axle bearing but directly or indirectly connected to the axle bearing in a heat-conducting manner, is measured as the measuring temperature (T) during operation. The temperature of the component different from the axle bearing is estimated by means of the calculation model (Testimator) as the estimated temperature (T). In order to improve the accuracy of the calculation model (Testimator) in terms of the estimation of the temperature (T) of the axle bearing, the calculation model (Testimator) has a corrective element (K) that is used to continuously, temporarily or cyclically calibrate or adjust it on the basis of a comparison of the measuring temperature (T) with the estimated temperature (T).

Method and device for estimating the temperature of an axle bearing of a wheelset of a rail vehicle

A method for predicting the temperature (T) of a wheel bearing of a vehicle wheel for a future moment (t+&#x394;t) in relation to a present moment (t) or for a future time interval (t, t+&#x394;t) in relation to a present moment (t), on the basis of a course of the temperature (T) of the wheel bearing in a past time interval (t&#x2212;&#x394;t, t) in relation to the present moment (t), the predicted temperature (T) of the wheel bearing being determined from the sum of the temperature (T) of the wheel bearing at the present moment (t) and a corrective value (&#x394;T) which is determined according to a change in at least one driving condition, such as the speed (&#x394;v), and a change in the temperature (&#x394;T) of the wheel bearing within the past time interval (t&#x2212;&#x394;t, t).

Method for predicting the temperature of a wheel bearing of a wheel of a vehicle

A method for monitoring the state of a bogie of a railway vehicle having at least one wheel set, wherein the wheels of the wheel set are rigidly connected by an axle and have an approximately conical wheel profile, and signals corresponding to a sinusoidal run of the wheel set of the bogie based on the conical wheel profile of the wheels are filtered out of signals provided by sensors disposed on the bogie. The frequency of the sinusoidal run is determined relative to boundary conditions, such as the prevailing vehicle speed, and compared to a save value or range of values for the frequency of the sinusoidal run typical for the prevailing boundary conditions, wherein the deviation of the measured frequency from the saved value or range of values for the frequency is monitored.

Method for monitoring the state of a bogie of a railway vehicle comprising at least one wheel set

A method for monitoring the state of components of a railway vehicle, wherein sensors for capturing loads acting on the components are operated, the measurement values thereof are fed as input values to an analysis unit for analyzing the wear state, wherein the current position of the railway vehicle is processed as a signal to this end, wherein the current velocity of the railway vehicle is recorded over time, from which a v-t profile is generated and compared to a stored v-t profile in order to determine the current position as a further input value for monitoring the state by stochastically comparing both profiles.

Method and electronic device for monitoring the state of components of railway vehicles

A method for monitoring the driving behavior of a railway vehicle, wherein at least one measurement variable characterizing the vibrational behavior of at least one wheel set of the railway vehicle, is captured by at least one sensor providing a corresponding measurement signal. The method includes the steps of identifying at least one significant event or a combination of multiple significant events within the time trace of the measurement signal and identifying the event time at which the significant event took place, deriving the frequency from the time trace of the measurement signal starting from the event time, comparing the derived frequency to at least one stored reference frequency, evaluating the vibrational behavior of the wheel set as a function of the deviation of the derived frequency from the at least one stored reference frequency.

Method and device for monitoring the driving behavior of a railway vehicle

A control unit for a rail vehicle, comprising a braking control unit that contains an electronic braking control device for emitting control commands to brake actuators and/or comprising an anti-skid device, which controls the wheel slip of the wheels of at least one axle in accordance with at least one rotational speed signal from an anti-skid sensor. The control unit also comprises a roll monitoring unit with an electronic roll monitoring control device and at least one roll monitoring sensor for detecting the rotational speed of at least some wheels in the form of a rotational speed signal, and comprises a rolling gear monitoring unit for monitoring and/or diagnosing critical conditions of and damage to the rolling gear. The monitoring unit comprises an electronic control device for monitoring the rolling gear. The electronic control device for monitoring the rolling gear and/or the electronic anti-skid control device and/or the electronic braking control device and/or the electronic roll monitoring control device are combined to form a structural unit.

Control device for a rail vehicle

The invention relates to a device for the error monitoring of chassis components of rail vehicles, including at least one vibration sensor. According to one embodiment of the invention, at least one vibration sensor is arranged on a bogie frame or on a wheel set bearing of an axis of a bogie of the rail vehicle such that the detection direction thereof has a component in the moving direction (x-direction) or a component perpendicular to the moving direction (y-direction) and at the same time a component parallel to the vertical axis (z-direction) of the rail vehicle.

Device for error monitoring of chassis components of rail vehicles

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Neubiberg, Germany

Ulf Friesen