Abstract: The method provides determining at least one speed of a machine, wherein, on the basis of the measurement of a vibration variable carried out on the machine over time, the complex spectrum of this variable is determined, wherein a frequency interpolation is carried out; boundary conditions are established for the evaluation of the spectrum, which include the permissible frequency range of an expected main speed, a set of relative frequencies with respect to the main speed in the form of frequency multipliers, and a weighting factor for the particular relative frequency; a spectral probability density is calculated with consideration for the boundary conditions, which results for each frequency of the permissible frequency range as a sum of the amplitude of the spectrum, which has been weighted with the particular weighting factor and the main speed is determined on the basis of the frequency having the maximum probability density.

Abstract: A probe device for a rotating head of a rotary system comprises at least one support arm that is mounted so as to be rotatable about an axis of rotation, at least one probe that is connected to the support arm, and at least one cable guide for guiding a probe cable. The cable guide comprises a first end portion that extends along the support arm, from the probe to the axis of rotation, and a second end portion that originates essentially at the axis of rotation.

Abstract: A sensor arrangement (10) includes a sensor (11) for a mechanical quantity or a thermal quantity, a processing circuit (12), which is connected at the input end to the sensor (11) and provides an output signal (SRF), which is processed for wireless transmission, and a cable (13), which is coupled to the processing circuit (12), to which the output signal (SRF) or a signal derived from the output signal (SRF) is supplied and which delivers a power supply to the processing circuit.

Abstract: The invention relates to a coupling device for connecting a first shaft (10) to a second shaft (12) by means of two flanges (16, 18, 22, 24) that are meshed with one another, wherein the flanges are provided or designed with means (30, 32, 111, 211, 311, 317, 319, 321) of enabling the axial and/or radial relative misadjustment thereof due to a misalignment of the shafts to be visually observed. According to one variant, at least one of the flanges or an element (20, 26) meshed with the two flanges is provided with at least one transducer (50, 60, 70, 80, 90, 94) for generating an electrical signal and/or acoustic signal from a mechanical movement, wherein said transducer is designed to generate the signal on the basis of a periodic movement of the flanges relative to one another, at least if the relative movement of the two shafts to one another, which occurs as the shafts rotate due to misalignment of said shafts, exceeds a certain value.

Abstract: The invention relates to a method and an apparatus (30) for determining the distance between a light beam (10) and a point (12) on an object surface (14) using a light sensor (16) with a planar measuring field (18), the method comprising Steps A to E, and the apparatus (30) being configured so as to perform the method.

Abstract: The invention relates to a system and to a method for determining the displacement of two bodies relative to each other, wherein the system comprises a first camera, a second camera, a first lamp, and a second lamp, wherein both the first camera and the second camera comprise an objective and an image sensor having a sensor surface.

Abstract: A method for bringing two bodies (1, 2, 6, 7) into predetermined positions with respect to one another, which is carried out by an alignment system having data spectacles (smart glasses) (12). The dimensions of the bodies (1, 2 , 6, 7) and/or respective positions of the bodies (1, 2, 6, 7) are determined relative to each other by a data processing means (17) of the data spectacles (12) on the basis of images which are detected by an image detection means (16) of the data spectacles (12). Furthermore, an adjustment value is displayed in a display device 18 of the data spectacles (12).

Abstract: Method and device for precision adjustment of the beam direction of the light source of a device for aligning two objects relative to one another, the beam direction being moved by a motor via input elements of the computer of the alignment device.

Abstract: A method for measuring vibrations in which gravity forces and acceleration forces resulting from machine vibrations are measured using an accelerometer/inclinometer sensor coupled to a non-rotating part of a rotating machine, the orientation of the sensor with regard to the direction of action of the gravity forces is determined from a stationary component of sensor output, and non-stationary components of sensor output are evaluated based upon the determined sensor orientation. Both the result of the alignment process and also the result of the vibration measurement are communicated to the user as an easily understandable characteristic on a display of an evaluation unit.

Abstract: The invention relates to an apparatus (8) for detecting a target position deviation of two bodies (10, 12), with a first measuring unit (14) for placement on the first body (10), a second measuring unit (18) for placement on the second body (12), and an evaluation unit (22). The first measuring unit (14) has means (24) to generate at least one bundle of light beams (28) and a scattering area (34) to scatter light (WV, PV) striking the scattering area, and the second measuring unit (18) has a reflector arrangement (38) to reflect the bundle of light beams (28) onto the scattering area (34). The second measuring unit (18) has a camera (36) to record images of the scattering area (34). The evaluation unit (22) is configured so as to detect from the images a deviation in target position of the bodies (10, 12). The invention additionally relates to a method to detect the deviation in target position.

Abstract: The invention relates to a method for determining the alignment of a laser light beam referred to an axis of rotation of a device that is rotatable around the axis of rotation, wherein the alignment is determined by means of a laser light detector device, and wherein the method comprises the steps A to D. Moreover, the invention relates to a laser light detection device.

Abstract: Method for determining a characteristic for the quality of alignment of a rotating machine, by obtaining vibration data with at least one vibration sensor, and using the vibration data obtained with the vibration sensor to determine a characteristic for the quality of alignment. Furthermore, alignment data obtained from first and second optoelectronic units is used in addition to the vibration data obtained with the at least one vibration sensor to produce a combination value from which both an instantaneous vibration state and success of the alignment can be determined.

Abstract: An alignment device with one or two optoelectronic transmitting and/or receiving units and an evaluation unit. At least one optoelectronic transmitting and/or receiving unit contains an inclinometer. Furthermore, the transmitting and/or receiving unit is connected to a vibration sensor which can be the inclinometer. Both the result of the alignment process and also the result of the vibration measurement are communicated to the user as an easily understandable characteristic on a display of the evaluation unit. For vibration measurement at a non-rotating part of a machine, an accelerometer/inclinometer sensor may be used for measuring acceleration forces resulting from machine vibrations to be measured and for measuring gravity and an electronic evaluation unit determining the orientation of the sensor with regard to gravity from a stationary component of the sensor output and determining sensor orientation from evaluation of non-stationary components of sensor output.

Abstract: A device for determining the position of a first mechanical element relative to a second mechanical element, having a first measurement unit for attachment to the first mechanical element, a second measurement unit for attachment to the second mechanical element, and an evaluation unit. The first measurement unit emits spectrally differing first and second light beams in essentially the same direction and a position-sensitive optical detector. The second measurement unit has a reflector arrangement facing the first measurement unit, in order to reflect the first and second light beams onto the detector. Surfaces facing the first measurement unit being color splitters having different reflectivity/transmissibility for the first light beam and the second light beam. The evaluation unit determines the location of the first and second mechanical elements relative to one another from the incidence positions of the reflected first and second light beams on the detector.

Abstract: Method for monitoring of a wind power plant operated in variable operating states. Start sensor data is obtained in at least one basic operating state of the machine; based on the start sensor data, a starting model with a rule set for conducting the monitoring is set up, the rule set determining which parameters are to be monitored, in which manner and with which weighting and which sensor data are to be obtained and used for this purpose; a reference SOM is prepared using the rule set with sensor data selected using the rule set and obtained in a reference operating phase of the machine; during a monitoring operating phase, time characteristics of a quantization error of the sensor data selected using the rule set being tracked with respect to the reference SOM, troubleshooting being started if the quantization error meets a criterion which is dictated by the rule set.

Abstract: Computer-based detection of damage on machine components, such as misalignments and mechanical damage on bearings and clutches, is achieved using mathematical linkage of the temperatures of selected regions of thermography pictures. Photographs from the visible spectral range can be consulted in the computed-based detection.

Abstract: A method for nondestructive and noncontact detection of faults in a test piece, with a transmitter coil arrangement with at least one transmitter coil, a receiver coil arrangement with at least one receiver coil for detecting a periodic signal which has a carrier oscillation whose amplitude and/or phase is modulated by a fault in the test piece. A signal processing unit producing a useful signal receiver coil signal, and an evaluation unit evaluating the useful signal for detection of a fault in the test piece. A self-test unit automatically or upon an external request undertakes systematic quantitative checking of signal processing functions of the signal processing unit and/or systematic quantitative checking of the transmitter coil arrangement and/or of the receiver coil arrangement and/or upon external request undertakes calibration of the signal processing unit using a calibration standard which replaces the transmitter coil arrangement and/or of the receiver coil arrangement.

Abstract: A method and device for nondestructive and noncontact detection of faults in a test piece, or electrically conductive particles in a liquid flow, moving passed the device, using eddy currents. The test piece or flow is exposed to periodic alternating electromagnetic fields. A periodic electrical signal is detected. The receiver coil signal is digitized with an A/D converter stage. A useful signal is produced from the digitized receiver coil signal with a signal processing unit, and the useful signal is evaluated with an evaluation unit for detecting a fault in the test piece or electrically conductive particles. When overdriving of the A/D converter stage by the receiver coil signal is ascertained by monitoring the curve shape of the digitized receiver coil signal, a part of the receiver coil signal truncated by the A/D converter stage is reconstructed using a mathematical approximation in the digitized receiver coil signal.

Abstract: A test set-up (10) for non-destructive detection of a flaw in a device being tested by means of an eddy current has an excitation coil (14), to which an excitation signal (SE) can be sent to act on the device being tested (16) with an electromagnetic alternating field, a receiving coil (17) to generate a coil signal (SP), which is a function of the flaw in the device being tested (16), an analog-digital converter (21), which is coupled to the receiving coil (17) on the input side, a filter arrangement (22), which is coupled to the analog-digital converter (21) on the input side and is designed for band-pass filtering and scan rate reduction, and a demodulator (27), which is coupled to an output of the filter arrangement (22) on the input side.

Abstract: Method for spectral evaluation of oscillation signals which have been obtained on a rotor blade of a wind power installation with an accelerations sensor. In doing so, instead of the otherwise conventional Fourier transform calculation, the spectral power density is computed. In the evaluation, also signal portions are considered which are not detected in the Fourier transform because they do not go back to oscillations which have been excited in the rotor blade.