Siemens Aktiengesellschaft

Siemens Energy, Inc.

Siemens Energy Global Gmbh & Co. Kg

Siemens Power Generation, Inc.

Hans-Gerd Brummel

Uwe Pfeifer

Uwe Linnert

Carl Udo Maier

Volkmar Sterzing

Jochen Ostermaier

Michael Willsch

Steffen Udluft

Evangelos V Diatzikis

Jatinder P Singh

Dirk Grieshaber

Klaus Newerla

Huub De Bruyn

Michael Twerdochlib

Justinian Rosca

Heiko Claussen

Edward David Thompson

Siegmund Düll

Kai Heesche

Glenn E Sancewich

Jürgen Götz

Matthias Humer

Lutz Intichar

Detlef Frerichs

Siegmund DÜLL

A method and an assembly for controlling an internal combustion engine having multiple burners is provided. Combustion measurement data is collected in a burner-specific manner for each burner and assigned to a burner identification identifying the respective burner. Performance measurement data of the internal combustion engine is also collected and used to determine a performance value. A machine learning model is trained by means of the combustion measurement data, the associated burner identifications and the performance measurement data, to generate burner-specific control data which optimizes the performance value when the burners are actuated in a burner-specific manner using the control data. The control data generated by the trained machine learning model is output for the burner-specific actuation of the burners.

Method and assembly for controlling an internal combustion engine having multiple burners

A turbo-machine is provided having at least one turbo-machine stage, wherein overload protection of the rotating shaft is provided by the method and, to protect the rotating shaft against overload, a measurement of a torsional stress of the rotating shaft is carried out during operation of the rotating shaft. The torsional stress is measured via a measurement of the torque of the rotating shaft. The torque is preferably measured magneto-elastically. By using the measured torque of the rotating shaft, the development of the torque is forecast. On the basis of the forecast produced, the turbo-machine stage or operating parameters of the turbo-machine is/are regulated. Further a turbo-machine is provided comprising at least one turbo-machine stage which has at least one rotating shaft, wherein the turbo-machine has a device for carrying out the method.

Method for operating a turbo-machine having overload protection and turbo-machine comprising a device for carrying out said method

A method and apparatus for detecting the current damaged state of a machine is provided. The disclosed relates to an apparatus for detecting the current damaged state of a machine, wherein the data capture and editing device: comprises a Fast Fourier analysis apparatus, for performing a transformation from pressure signals that are available in the time domain to a frequency domain as discrete-time frequency spectra (), additionally includes a spatial aggregation unit and a temporal aggregation unit that combines the discrete-time frequency spectra, additionally includes a cepstrum analysis unit, for producing a cepstrum with various actual cepstrum values from the temporally and spatially aggregated discrete frequency spectra (), additionally includes a computation unit that takes the cepstra produced in this manner and produces, at a previously defined interval of time, a plurality of actual cepstrum intervals including adjacent actual cepstrum values, as a result of which an actual cepstrum value, which can be ascertained from at least three adjacent actual cepstrum intervals, can be produced (), includes a unit that computes () a target/actual comparison with the actual cepstrum value produced in this manner and a previously determined target cepstrum value.

Apparatus and method for detecting the current damaged state of a machine

The invention concerns a method for the computerized control and/or regulation of a technical system (T). Within the context of the method according to the invention, there is implemented in a preset regulating process (CO, CO) an exploration rule (EP) by means of which new, as yet unknown, states (x) of the technical system (T) are started, a simulation model (SM) of the technical system (T) checking whether the actions (a) of the exploration rule (EP) lead to sequential states (x') lying within predetermined thresholds. Only in that case is the corresponding action (a) performed according to the exploration rule (EP) on the technical system. The method according to the invention enables new states to be explored within the framework of the operation of a technical system, it being ensured through checking of appropriate thresholds that the exploration is carried out imperceptibly and does not lead to incorrect operation of the technical system. The method according to the invention is suitable in particular for controlling or regulating gas turbines or wind turbines.

Method for the computerized control and/or regulation of a technical system

A turbo-machine, which can be operated in an optimized driving range is provided. To this end, a method for operating a turbo-machine having at least one turbo-machine stage, which has at least one rotary shaft is disclosed. According to the method, the following method steps are carried out: a) determining a desired efficiency characteristic value &#x3b7;of the turbomachine stage; b) determining an actual efficiency characteristic value &#x3b7;of the turbo-machine-stage; c) determining a comparison efficiency characteristic value of the turbo-machine stage by comparing the actual efficiency characteristic value &#x3b7;and the desired efficiency characteristic value &#x3b7;to one another; and d) changing at least one operating parameter of the turbo-machine stage subject to the comparison efficiency characteristic value &#x3b7;, wherein in order to determine the actual efficiency characteristic value &#x3b7;, a measuring of a torque of the rotary shaft of the turbo-machine-stage is carried out.

Method for operating a turbomachine, wherein an efficiency characteristic value of a stage is determined, and turbomachine having a device for carrying out the method

A sensor assembly for detecting surfaces stresses and/or the microstructure state of a ferromagnetic workpiece, wherein at least one first base coil system having a first directional sensitivity is provided, at least one second base coil system having a second directional sensitivity is provided, and at least one third base coil system having a third direction and a third directional sensitivity is provided, and wherein at least the first base coil system and the second base coil system form a first differential angle and the second base coil system and the third base coil system form a second differential angle, and wherein the first base coil system, the second base coil system, and the third base coil system are arranged such that the mechanical surface stresses of the workpiece can be at least partially determined. A method for determining the mechanical surface stresses is also provided.

Sensor arrangement and method for determining the mechanical surface stresses and/or the microstructure state

A magneto-elastic force sensor includes a sensor head () that has an emitting coil () which generates a magnetic field and at least one magnetic field sensor () for measuring a magnetic flux caused by the magnetic field of the emitting coil () in a measured object (). The sensor head () also includes a recorder () for recording an electrical value that reflects the inductivity of the emitting coil () or that is clearly connected to the latter. The magneto-elastic force sensor allows for compensation of a distance dependency in the measurement signal by ascertaining the distance between the emitting coil () or the sensor head () and the measured object () based on the recorded electrical value and by compensating the distance dependency in the measurement signal based on the ascertained distance.

Magneto-elastic force sensor and method for compensating distance dependency in a measurement signal of such a sensor

Systems and methods to monitor a signal from an apparatus are disclosed. A feature extracted from the signal is automatically defined. Signals are received over a period of time wherein the apparatus is in a normal operational mode. Features are classified in a learning mode and are applied to create a reference model that defines a within-normal operational mode. In a testing mode a signal generated by the apparatus is received, a feature is extracted and classified. Instantaneous data generated in operational mode by the apparatus is classified by the system as abnormal if it does not lie within boundaries of the reference model or contains information/structure in an orthogonal subspace. A learned reference model is augmented by a user or automatically. In one illustrative example the apparatus is a power generation equipment and the signal is an acoustic signal.

Systems and methods for learning of normal sensor signatures, condition monitoring and diagnosis

A magnetoelastic torque sensor () has an emission coil () for generating a magnetic field in an object (), the torque of which is to be determined. The emission coil is axially oriented (A) and has an axial emission coil end surface () which can be guided towards the object (). At least two reception coils () at a distance from the emission coil and having, respectively, a receiving coil end surface () which can be guided towards the object () to capture a response signal induced in the object () by the magnetic field of the emission coil (). At least the receiver coil end surface () of one of the receiver coils protrudes beyond the emission coil end surface () to a selected distance from the object ().

Magnetoelastic torque sensor

A torque sensor arrangement including a contactless torque sensor, in which the torque sensor is arranged on an electrically operating linear carriage is provided. A distance sensor is also arranged on the linear carriage such that it allows the distance to the object of which the torque is to be determined to be measured.

Torque sensor arrangement and shaft comprising a torque sensor arrangement

A method for computer-aided closed and/or open-loop control of a technical system is provided. A first value of an output quantity is predicted on a data-based model at a current point in time. A second value of the output quantity is determined from an analytical model. The state of the technical system at the current point is assigned a confidence score in the correctness of prediction of the data-based model. A third value of the output quantity is determined from the first and second value as a function of the confidence score for controlling the technical system. A suitable value for the output quantity can be derived from the analytical model even for regions of the technical system in which the quality of prediction of the data-based model is low because of a small set of training data. The technical systems can be turbines, such as gas turbines.

Method for computer-aided closed-loop and/or open-loop control of a technical system

A method and system for monitoring the operating conditions of an electric generator. The system includes a triad sensor array formed within a predetermined section of a fiber optic conductor. The triad sensor array is formed of a group of sensors including a first sensor including a Bragg grating for producing a first signal representative of strain in a stator bar of the generator, a second sensor including a Bragg grating for producing a second signal representative of temperature in the stator bar, and a third sensor including a Bragg grating for producing a third signal representative of vibration amplitude in the stator bar.

Method and system for monitoring the condition of generator end windings

At least one transceiver sends ultrasonic pulses through an object, which at least partially transmits ultrasonic pulses, into an element which reflects the ultrasonic pulses. The ultrasonic pulse(s) can be reflected in a temperature-correlated manner from the reflective element to the transceiver.

Measuring device and method for determining temperature and/or pressure using measuring device

A method for determining the temperature of an away-facing surface of an object, wherein at least one ultrasonic pulse is transmitted through a surface of the object facing a transmitter/receiver unit into said object; the at least one ultrasonic pulse is reflected at least partially in the direction of the transmitter/receiver unit on the surface of the object facing away from the transmitter/receiver unit; and the reflected part of the at least one transmitted ultrasonic pulse is received by the transmitter/receiver unit. At least one temperature value for the object surface facing the transmitter/receiver unit is also determined; at least one value is determined for the propagation time of the at least one ultrasonic pulse through the object, and at least one temperature value for the object surface facing away from the transmitter/receiver unit is determined by the at least one temperature value for the object surface facing the transmitter/receiver unit and the at least one propagation time value.

Temperature determination of an away-facing surface of an object

A system is provided to monitor a structure within an outer casing of a gas turbine engine. The system may comprise an optical fiber bundle, a fiber bundle palette and a camera palette assembly. The optical fiber bundle may have first and second ends. The first end is adapted to pass through a bore in the outer casing of the gas turbine engine so as to be positioned adjacent the structure within the gas turbine engine casing to be monitored. The fiber bundle palette is adapted to be located outside of the engine casing to receive the second end of the optical fiber bundle. The camera palette assembly comprises a fixture movable relative to the fiber bundle palette and a first camera mounted to the fixture. The first camera is adapted to be positioned adjacent to the second end of the optical fiber bundle so as to receive electromagnetic radiation received by the first end of and transmitted through the optical fiber bundle.

Growing community of inventors

Berlin, Germany

Hans-Gerd Brummel