Abstract: The invention relates to a method and system for calibrating a control device, in particular an inverter control device, of an electric motor, comprising operating the electric motor as part of a force flow; performing a force measurement by means of piezo elements which are arranged in the force flow in such a way that the force flow is applied, in particular exclusively, to the piezo elements; and adapting a control characteristic the control device on the basis of at least one force component derived from the force measurement, in particular a change in the at least one force component and/or at least one torque component derived from the force measurement, in particular a change in the torque component.

Abstract: The invention relates to a method for assessing the state of an internal combustion engine with multiple cylinders with a first pressure sensor and a second pressure sensor connected to an evaluation unit, wherein in each case one cylinder pressure is measured using the pressure sensors. The first pressure sensor measures a reference measurement signal of a cylinder, assumed as a reference cylinder, of the internal combustion engine, and the second pressure sensor measures a first measurement signal of a first cylinder which differs from the reference cylinder, and in that the reference measurement signal of the reference cylinder and the first measurement signal are transmitted to the evaluation unit.

Abstract: The invention relates to a method for monitoring at least one exhaust gas turbocharger (ATL) of a large internal combustion engine (BKM), comprising at least one compressor (1a) and one exhaust gas turbine (1b) arranged on the same shaft as the compressor, wherein the current pressures (p1, p2) upstream and downstream of the compressor (1a) and the current temperatures (T1, T4) upstream of the compressor (1a) and upstream of the exhaust gas turbine (1b) are measured.

Abstract: The invention relates to a method for monitoring at least one exhaust gas turbocharger (ATL) of a large internal combustion engine (BKM), comprising at least one compressor (1a) and one exhaust gas turbine (1b) arranged on the same shaft as the compressor, wherein the current pressures (p1, p2) upstream and downstream of the compressor (1a) and the current temperatures (T1, T4) upstream of the compressor (1a) and upstream of the exhaust gas turbine (1b) are measured.

Abstract: A method for testing a vehicle or a sub-system thereof on a test stand or in a road trial, wherein the method provides force and torque transmitting interfaces which are at least partially present in reality. To be able to further increase the flexibility of test runs or test drives, at least one further sub-system or one component which is not present in reality is reproduced independently of the interfaces via a simulation program which is supplied with real, actual measured values and/or signals of the real part, wherein the output signals of the simulation model are fed to a control device of the real part for further processing.

Abstract: For operating an electromechanical transducer system with at least one piezoelectric transducer element, if necessary at least one identification element and an electronic control unit, on the one hand, the wanted signals of a certain utility operating range defined by the frequency band and time window thereof, assigned to at least one piezoelectric transducer element, as well as, on the other hand, inquiry signals and response signals for the functional testing of the transducer system are transmitted via a line system with only one electrical signal line.

Abstract: In order to make error recognition, for example, in cabling, in the stored data or in the data allocation, in the allocation of a sensor unit to sensor-relevant data for calibration of an analysis unit that is connected with a sensor unit possible, a sensor identification (6) is located in or on the sensor unit that can be polled by the analysis unit (4) and to which sensor-specific data are allocated in a storage unit (5), and a data carrier (7) is located in or on the sensor unit in which a second set of sensor-specific data are stored that can be read by the analysis unit (4) and can be compared with the first set of sensor-specific data of storage unit (5). Upon agreement of the first and second set of sensor-specific data, the measuring signals are transformed into measurement data by considering the sensor-specific data.

Abstract: To reduce the complexity of an indicating system 6 on an internal combustion engine for determining a parameter, the invention provides that on the basis of the measured variable a computing unit 8 for the indicating system 6 computes crank angle information, and on the basis of the crank angle information thus computed and the measured variable determines an engine parameter.

Abstract: A method for testing a vehicle or a sub-system thereof on a test stand or in a road trial is described, wherein the method provides force and torque transmitting interfaces which are at least partially present in reality. To be able to further increase the flexibility of test runs or test drives, at least one further sub-system or one component which is not present in reality is reproduced independently of said interfaces via a simulation program which is supplied with real, actual measured values and/or signals of the real part, wherein the output signals of the simulation model are fed to a control device of the real part for further processing.

Abstract: The life of a sensor unit is very strongly dependent on the loading of the sensor unit during use. The life of a sensor unit is generally specified in a number of loading cycles, however, which does not take into consideration the loading of the sensor unit. The invention therefore specifies a method and apparatus for assessing the residual life of a sensor unit which takes into consideration the actual loading of the sensor unit and therefore the residual life of the sensor unit can be estimated more precisely by virtue of a damage factor (S) being determined for the loading of a loading cycle (B) and the loading cycle (B) being weighted therewith.

Abstract: To reduce the complexity of an indicating system 6 on an internal combustion engine for determining a parameter, the invention provides that on the basis of the measured variable a computing unit 8 for the indicating system 6 computes crank angle information, and on the basis of the crank angle information thus computed and the measured variable determines an engine parameter.

Abstract: In order to make error recognition, for example, in cabling, in the stored data or in the data allocation, in the allocation of a sensor unit to sensor-relevant data for calibration of an analysis unit that is connected with a sensor unit possible, it is proposed to locate, in or on the sensor unit (1) a sensor identification (6) that can be polled by the analysis unit (4) and to which sensor-specific data are allocated in a storage unit (5), and in or on the sensor unit (1) a data carrier (7) is located on which a second set of sensor-specific data are stored that can be read by the analysis unit (4) and can be compared with the first set of sensor-specific data of storage unit (5). Upon agreement of the first and second set of sensor-specific data, the measuring signals are transformed into measurement data by considering the sensor-specific data.