241 |
Impact load monitoring system and impact load monitoring method for wind turbine for wind power generation |
US13687679 |
2012-11-28 |
US08800354B2 |
2014-08-12 |
Katsuhiko Shoda |
An impact load monitoring system for a wind turbine for wind power generation is provided with: an acceleration sensor 28 attached to a step-up gear 18 connected to a main shaft 20; a frequency filter 30 for extracting a monitoring-object component contained in a target frequency domain from vibration data representing a temporal change of amplitude of the acceleration obtained by the acceleration sensor 28; and a determination unit 32 for determining whether or not amplitude of acceleration of the monitoring-object component exceeds a reference value which is set in advance, by comparing the amplitude of the acceleration with the reference value. |
242 |
Ultrasonically controllable grease dispensing tool |
US13088212 |
2011-04-15 |
US08746068B2 |
2014-06-10 |
Mark A. Goodman; William Bishop; Gary Mohr |
A lubrication dispensing apparatus for lubricating a device with moving parts includes a lubricant reservoir, a lubricant dispenser for dispensing lubricant from the lubricant reservoir, an ultrasonic detection module which detects the amplitude of ultrasonic energy emitted by said device when its parts are moving and produces an signal related thereto, and a control module which analyzes the amplitude of the signal from the ultrasonic detection module and, in response to a lubricate signal, causes the lubricant dispenser to automatically dispense lubricant onto the moving parts of the device until the signal from the ultrasonic detector indicates that the ultrasonic energy produced by the device has decreased to a particular level. The control module includes a programmed processor and a storage memory. The memory stores as a base value the value of the detected amplitude of ultrasonic energy when the device is operating properly. After receiving a signal to lubricate the device, the processor causes the dispenser to start the flow of lubricant to the device, compares the signal from the ultrasonic detection module when the parts are moving to the base value, and causes the dispenser to cease the flow of lubricant when the signal substantially decreases. |
243 |
METHOD OF CARRYING OUT A VIBRATORY FATIGUE TEST OF A MECHANICAL PART |
US13942304 |
2013-07-15 |
US20140130598A1 |
2014-05-15 |
Jeremy Fanelli; Alain Bassot; Michèle Marois |
A method of carrying out a vibratory fatigue test of a mechanical part having a fatigue endurance limit, the part including a repair extending partly on a first zone of the part, the method including a preliminary test phase including: selecting a loading mode of the part; determining a cutting of the part defining a truncated part, the cutting of the part being defined to obtain a loading level in the repaired zone equal to the maximum value of an abatement to be validated; selecting a measuring device for the fine control of the fatigue test by the measurement of a stress applied to a point of the part; determining a resonance frequency of the truncated part according to the selected loading mode; implementing a loading according to the selected mode at a given level of the truncated part at the resonance frequency up to rupture of the part. |
244 |
Method and device for frequency analysis of data |
US13002911 |
2009-07-06 |
US08725468B2 |
2014-05-13 |
Cecile Daudet; Patrice Michel |
The data frequency analysis method comprises: a step for inputting signals coming from a first sensor; a step for inputting signals coming from at least a second sensor, each second sensor being positioned close to the first sensor so that the signals coming from each second sensor are strongly correlated with the signals coming from the first sensor; a step of estimating, for each sensor, a transfer function or model established from the combination of the signals from the first sensor and from each second sensor; and a step of extracting the structural properties of the system from each of the estimated models. |
245 |
Floating mechanism loading vehicle provided with double shafts and eight wheels for pavement accelerated loading test |
US13389694 |
2010-05-31 |
US08714001B2 |
2014-05-06 |
Jinxiang Feng; Xingyu Guo; Ying Han; Qingzhen Wu; Xuguang Wang; Peng Zhang; Xiangzhen Kong; Zhiguang Guan; Xianggui Li; Qian Jia; Jiwei Zhang; Huijun Wang |
Disclosed is a floating mechanism loading vehicle provided with double shafts and eight wheels for pavement accelerated loading test. The floating mechanism loading vehicle comprises front and rear rotating shafts (5), on each of which two loading steel wheels (3) and two backhaul steel wheels (2) are mounted, the loading steel wheels (3) being fixed on the rotating shafts (5) and the backhaul steel wheels (2) being rotatable round the rotating shafts (5). During the loading rolling course, the loading steel wheels (3) runs on the loading rail (4), while during the unloading backhaul course, the backhaul steel wheels (2) runs on the backhaul rail (1). |
246 |
Voice Controlled Vibration Data Analyzer Systems and Methods |
US13662051 |
2012-10-26 |
US20140122085A1 |
2014-05-01 |
Kenneth Ralph Piety; K. C. Dahl |
Embodiments of the present general inventive concept provide a voice controlled vibration data analyzer system, including a vibration sensor to detect vibration data from a machine-under-test, a data acquisition unit to receive the vibration data from the vibration sensor, and a control unit having a user interface to receive manual and audio input from a user, and to communicate information relating to the machine-under-test, the control unit executing commands in response to the manual or audio input to control the data acquisition unit and/or user interface to output an audio or visual message relating to a navigation path of multiple machines to be tested, to collect and process the vibration data, and to receive manual or audio physical observations from the user to characterize collected vibration data. |
247 |
TEST RIG |
US14034895 |
2013-09-24 |
US20140116123A1 |
2014-05-01 |
Brian Gabe Jensen |
A test rig for testing a component in a wind turbine is proposed. The test rig has an adjustable radial weight arrangement mounted on a rotatable shaft; a driving means for rotating the shaft at a shaft rotational velocity; and an adjusting means for adjusting the centre of mass of the adjustable radial weight arrangement relative to the shaft while the shaft is rotating. A wind turbine test setup for testing components of a wind turbine has a test rig mounted to a component such that centrifugal forces generated by the rotating radial weights during operation of the test rig are transferred as lateral forces to the wind turbine component under test. |
248 |
Speed sensitive dragging equipment detector |
US13659169 |
2012-10-24 |
US20140110535A1 |
2014-04-24 |
MARK JOSEPH BARTONEK |
The disclosure is directed to a method of detecting an object beneath a train. The method may include receiving a first signal indicative of a speed of the train, receiving a second signal indicative of a three generated by impact of the object with an impact element, and selecting a threshold value based on the speed of the train. The method may also include processing the second signal in accordance with a first procedure if the first signal indicates a speed of the train less than the threshold level, and processing the second signal in accordance with a second procedure different from the first procedure if the first signal is equal to or greater than the threshold level. |
249 |
Method for measuring mechanical power dissipation in a vibratory system |
US13076943 |
2011-03-31 |
US08594952B2 |
2013-11-26 |
Akira Inoue |
A method for determining mechanical power dissipation in a vibratory system, assuming the system is linear time-invariant and steady-state. The method includes the steps of identifying connection points between the vibratory system and components outside the vibratory system. The acceleration is measured at each connection point in a windowed time domain and the force at each connection point is also determined for the windowed time domain. The time domain values are converted into the frequency domain values by the fast Fourier transform, and the frequency domain acceleration values are converted to velocity values. The power dissipation of the vibratory system then equals the summation of one half of the power flow into the vibratory system. Here, each power flow is one half of the real part of the product of complex-conjugated velocity times force at the connection point in the frequency domain for each time window. |
250 |
Evaluating the health status of a system using groups of vibration data including images of the vibrations of the system |
US13136972 |
2011-08-16 |
US08572009B2 |
2013-10-29 |
Patrick Neal Harris |
A method and apparatus for determining a health of the system. Groups of vibration data are identified for the system. A group of vibration data in the groups of vibration data comprises data for vibrations of the system at different frequencies over time. The groups of vibration data for the system are stored in a number of associative memories in a computer system. The health of the system is identified based on the groups of vibration data in the number of associative memories. The groups of vibration data include images of the vibrations of the system. |
251 |
FREQUENCY-ADAPTABLE STRUCTURAL HEALTH AND USAGE MONITORING SYSTEM |
US13764617 |
2013-02-11 |
US20130211737A1 |
2013-08-15 |
Barry D. Batcheller; Johan A. Wiig |
A structural health monitoring system comprising intelligent sensors, wherein the intelligent sensors are individually programmable and can be tuned to listen to specific frequencies based on a scaling factor based on the sensor's location in the system being monitored, a set of pre-known frequencies based on the sensor's location in the system being monitored, and the output of a central frequency-based system sensor. |
252 |
METHOD FOR RECONSTRUCTING A THREE-DIMENSIONAL MODEL OF THE PHYSICAL STATE OF A MONITORING OBJECT AT A MEASUREMENT POINT |
US13821332 |
2010-09-07 |
US20130169631A1 |
2013-07-04 |
Anatoly Alekseevich Speranskiy; Alexander Igorevich Prokhorov |
The invention relates to the field of continuum mechanics and is intended for evaluating the stress-strain state of objects in mechanical systems. The method comprises measuring a spatial vibration, storing a set of vectorial strain values and reproducing a spatial hodograph of the measurement point. Furthermore, in synchronism with the measurements, analytical synthesis of 3Dsuperposition of the measurement spectrum is performed and a set of vectorial stress values is stored. Diagnostics of the stress-strain state of the object are performed on the basis of a visual model presented in the form of a spatial three-dimensional graph of the physical state of a monitoring object at a measurement point which, in associated form, represents Hooke's law and Poisson law. The invention makes it possible to represent, in real time, the current life of the structural strength of the monitoring object, and to increase the information content and reliability of the evaluation of the physical state of monitoring objects. |
253 |
ANALYSIS METHOD FOR STORAGE MEDIUM |
US13572659 |
2012-08-12 |
US20130066579A1 |
2013-03-14 |
Kun-Lin LEE |
A method is provided for analyzing a plurality of storage mediums in a server unit. A predetermined value is set according to a type of a storage medium. A first result and a second result generated by testing the storage medium in a first test and a second test are stored. A keyword is set for reading a first value and a second value from the first result and the second result. A ratio between the second value and the first value is computed to generate a third value for determining whether the third value is smaller than the predetermined value. Thereby, the third value is marked when the third value is smaller than the predetermined value. |
254 |
METHOD AND DEVICE FOR TESTING THE TIGHTNESS OF AN ELECTRIC MACHINE STATOR CORE |
US13662265 |
2012-10-26 |
US20130047748A1 |
2013-02-28 |
Massimiliano Visintin |
A method is provided for testing the tightness of an electric machine stator core includes: introducing a test instrument that is connected to a movable support into an air gap between a stator core and a rotor, locally placing the test instrument and locally testing defined zones of the generator stator core. A device for carrying out the method is also provided. |
255 |
Trending of vibration data taking into account torque effect |
US12655720 |
2010-01-06 |
US08355879B2 |
2013-01-15 |
Eric Robert Bechhoefer |
In vibration based mechanical diagnostics, algorithms may extract some feature of a component which may be used as a statistic of the components' health. A measured condition indicator corresponding to the analysis of the components' health may be a function of transmission error (TE). Because there exists a relationship between TE and the CI for a component that is faulted, the CI is correlated with power transmitted. In drive train components, power may be proportional to measured torque. In terms of diagnostics or trending of a component, it is desirable to reduce the scatter in the measured CI and account for this torque. The relationship between measured CI and torque may be captured over time. An increase in the correlation of torque with the CI would indicate an increase of TE which indicates the propagation of a fault. |
256 |
Apparatus for monitoring rotating components |
US12460789 |
2009-07-24 |
US08290723B2 |
2012-10-16 |
Jörg Kortstock; Heiner Kösters |
The apparatus for monitoring appliances and machines having rotating components, particularly for monitoring compressors, vacuum pumps and other pumps, has a sensor, an evaluation electronics unit and an interface for the output of signals. The evaluation electronics unit has a microprocessor having three inputs for performing measurements in three different frequency ranges at different frequency resolutions, with the respective vibration intensities being averaged at a plurality of frequencies in line with the third-octave spectrum. The interface is a two-wire interface which is used to report different operating states using different DC values. |
257 |
PRESSED WORKPIECE INSPECTION APPARATUS |
US13424711 |
2012-03-20 |
US20120247208A1 |
2012-10-04 |
Kuniaki Takahashi |
Provided is a pressed workpiece inspection apparatus. A main body of a finger mounted on a palletizer robot that transports a finished workpiece W to a palette includes the following components: two vacuum cups configured to attract the finished workpiece W, a vibrating mechanism configured to vibrate the finished workpiece W, a vibration detection sensor configured to detect a vibrational state of the finished workpiece W caused by the vibrating mechanism, a data logger configured to store and retain a detected signal from the vibration detection sensor, a transmitter configured to wirelessly transmit the detected signal stored and retained in the data logger to an analyzer, and a rechargeable battery configured to drive the vibration detection sensor, the data logger, and the transmitter. The analyzer determines whether or not the finished workpiece W is non-defective, based on the detected signal from the transmitter. |
258 |
METHOD FOR MEASURING MECHANICAL POWER DISSIPATION IN A VIBRATORY SYSTEM |
US13076943 |
2011-03-31 |
US20120247177A1 |
2012-10-04 |
Akira Inoue |
A method for determining mechanical power dissipation in a vibratory system, assuming the system is linear time-invariant and steady-state. The method includes the steps of identifying connection points between the vibratory system and components outside the vibratory system. The acceleration is measured at each connection point in a windowed time domain and the force at each connection point is also determined for the windowed time domain. The time domain values are converted into the frequency domain values by the fast Fourier transform, and the frequency domain acceleration values are converted to velocity values. The power dissipation of the vibratory system then equals the summation of one half of the power flow into the vibratory system. Here, each power flow is one half of the real part of the product of complex-conjugated velocity times force at the connection point in the frequency domain for each time window. |
259 |
STRESSES INDUCED BY RANDOM LOADING |
US13414823 |
2012-03-08 |
US20120239358A1 |
2012-09-20 |
Hoi YIU |
A computer-implemented method of modelling a root-mean-square stress in a structure induced by a random load. The method comprises determining a modal correction factor based on data representing the eigensolution for the structure in free vibration. The modal correction factor characterises the proportion of the random load, which is attributable to the root-mean-square response of the structure. Once the modal correction factor has been calculated, it is applied to data representing a stress in the structure due to a forced vibration to thereby determine the root-mean-square stress induced by the random load. |
260 |
RIG FOR MEASURING BLADED COMPONENT MISTUNING |
US13022651 |
2011-02-08 |
US20120198938A1 |
2012-08-09 |
Richard A. Lomenzo |
A rig for studying a component has a component support for mounting the component. A speaker applies sound energy to airfoils in the component. A vibrometer studies the effect of the applied sound on the airfoils. At least two of the vibrometer, the component support, and the speaker are rotatable relative to each other. In a separate feature, a vibrometer for studying the effect of sound energy on airfoils in a component is provided with a vision system. The vision system is operable to identify the exact location at which the laser is studying the effect on the airfoil. Methods are also disclosed. |