Robert Boschgmbh

Jan Scheuing

Florian Hartwich

Siegbert Steinlechner

Jo Pletinckx

Arthur Mutter

Franz Bailer

Christoph Schroeder

Marcus Wagner

Thomas Grauer

Uwe Martin

Jens Berg

Alexander Emperle

Vishwanath Malipatil

Anna Hoenig

A method for determining a rotational frequency of a wheel, in particular of a motor vehicle, uses a rate of rotation sensor that has a rotary sensor assigned to the wheel and a sensor element assigned to the rotary sensor. The rotary sensor has pulse generators that are arranged in a manner distributed over its circumference and spaced evenly from one another and whose edges are recorded by the sensor element so as to determine the rotational frequency of the rotary sensor. There is provision to use an optimal filter in order to compensate a modulation caused by an eccentricity, and to adapt modulation parameters of the optimal filter through a sequential least-squares method. A time-equidistant frequency signal is subjected to short-term averaging, for example using a PT1 filter, and the modulation is modelled as sinusoidal interference and compensated.

Method and device for determining a rotational frequency of a wheel

A method for detecting a loosened bolted wheel joint on a wheel of a vehicle. The angular velocity of a hub of the wheel is evaluated. A periodic wheel modulation of the angular velocity is ascertained. An oscillation of the wheel generated due to the loosened bolted wheel joint is detected, using a step-change in a phase angle of the modulation by an expected angular increment, which is a function of the number of bolts.

Method and device for detecting a loosened bolted wheel joint on a wheel

A processor system comprises at least a program counter structure, an interrupt control device, a memory, and an apparatus. The interrupt control device is configured to respond to an interrupt request by providing the program counter structure with an address associated with the interrupt request. The program counter structure is configured to output the address to the memory via a memory interface. The apparatus is configured to protect the program counter structure in case of an interrupt request, the apparatus includes an interface, a comparing device, and an outputting device.

Method and apparatus for protecting a program counter structure of a processor system and for monitoring the handling of an interrupt request

In a method for detecting wheel imbalances in a vehicle, the profile of the driving state variable is ascertained by sensor over a speed range of the vehicle; a frequency analysis is performed; and a resonance step-up is indicative of a wheel imbalance.

Method for detecting wheel imbalances in a vehicle

The disclosure relates to a method for serially transmitting frames from a transmitter to at least one receiver via a bus line and to a participant station for a bus system. In the method, stuff bits are integrated into the frame by the transmitter dependent on the values of multiple previous bits in order to generate additional signals edges. The transmitter of the frame counts the stuff bits which are integrated depending on the value of multiple previous bits, and information on the number of counted stuff bits is transmitted in the transmitted frames.

Method for serially transmitting a frame from a transmitter to at least one receiver and participants of a bus system via a bus system

A sensor system for furnishing a D-dimensional measured signal encompasses at least N sensors (where D&#x3c;N) sensors that have measurement directions linearly independent of one another; a stimulus source for furnishing a periodic stimulus signal for each of the sensors, the stimulus signals having mutually orthogonal frequencies; and a processing device for removing the stimulus signals from the sensor signals and for furnishing the D-dimensional measured signal.

Redundant signal capture

The disclosure relates to a sensor arrangement for a vehicle having at least one rotation-speed detection apparatus, which continuously detects a state variable and outputs said state variable to an evaluation and control unit which receives and evaluates signals which are output by a rotation-speed detection apparatus, wherein the evaluation and control unit carries out a first evaluation process with the detected state variable and ascertains a rotation speed of at least one vehicle wheel, the rim of said vehicle wheel being fastened to a corresponding wheel hub by means of wheel fastening means. According to the disclosure, the evaluation and control unit carries out a second evaluation process and identifies and monitors, on the basis of the continuously detected state variable, mechanical play between the vehicle wheel and the corresponding wheel hub in order to detect detached wheel fastening means.

Sensor unit for a vehicle

A method is provided for serial data transmission in a bus system having at least two bus subscribers, which exchange messages via the bus, the send access to the bus for each message being assigned to a bus subscriber by the arbitration method according to CAN Standard ISO 11898-1; it being decided as a function of a suitable identification (EDL) which result from one of the CRC calculations started in parallel is used for checking the correct data transmission; for at least one value of the identification an additional condition being checked, and in response to its presence, fixed stuff bit sequences from one or more bits are inserted into the message by the sender, at least into parts of the message.

Growing community of inventors

Brackenheim, Germany

Jan Scheuing