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556 results about "Predictive maintenance" patented technology

Predictive maintenance techniques are designed to help determine the condition of in-service equipment in order to estimate when maintenance should be performed. This approach promises cost savings over routine or time-based preventive maintenance, because tasks are performed only when warranted. Thus, it is regarded as condition-based maintenance carried out as suggested by estimations of the degradation state of an item.

Cluster industrial robot failure diagnosis method based on outlier excavation

The invention relates to a fault diagnosis method for trunked industrial robots based on outliers mining, belonging to the filed of fault diagnosis of electromechanical equipment. The method comprises the following steps of: firstly collecting data of original operating state of the trunked industrial robots and carrying out preprocessing operation of classifying and the like; then using a cluster analysis method to carry out analysis by taking a plurality of robots as a group, so as to lead a plurality of equipment to carry out classification according to operational state; based on clustering, utilizing an outliers mining method to calculate outlier factors of each industrial robot and then obtaining outlier degree thereof; separating outliers according to outlier degree and further determining that whether individual industrial robot represented by the outlier occurs fault or not; and judging the specific parts of faults of the robots according to the types of abnormal operation parameters and obtaining fault diagnosis results. By utilizing the fault diagnosis results, the method can implement targeted and predictive maintenance, thus avoiding the occurrence of faults of equipment, improving the reliability of equipment and guaranteeing reliable operation of trunked operational robots.
Owner:SHANGHAI JIAO TONG UNIV

Composite machine tool digital twinning monitoring system

The invention discloses a composite machine tool digital twinning monitoring system, which relates to the technical field of digital twinning. The composite machine tool digital twinning monitoring system creates a digital twinning monitoring system through using a machine tool information module, realizes multi-platform, multi-data and multi-interface communication based on an OPCUA transmissioninterface, and constructs a man-machine interaction module; a multi-field data acquisition module acquires multi-source heterogeneous data in real time by adopting different types of sensors, processes the acquired data based on an information fusion technology to form twin data, and forwards the twin data to a modeling calculation module; the modeling calculation module is used for forming a digital twinning body of a compound machine tool through driving of the twin data in combination with rules such as constraint, prediction and decision; and a personalized decision module monitors and manages entity machine tool equipment in real time by reconstructing and optimizing a machine tool monitoring twinning model in real time. According to the composite machine tool digital twinning monitoring system, the monitoring process of the operation of the compound machine tool is simplified, the monitoring precision of the machine tool system is improved, and the active predictive maintenance of the operation of the compound machine tool is realized.
Owner:GUILIN UNIV OF ELECTRONIC TECH

Adaptive high frequency energy detection

A data collector having a digital signal processing circuit that receives a digitized vibration signal, and performs processing steps to isolate high frequency pulses in the digitized vibration signal and quantify energy content of those pulses by detecting a peak negative value of the digitized peak-to-peak amplitude of the received vibration signal, and then using this peak negative value to compute a maximum peak-to-peak value of the received vibration signal. Periodically, the maximum peak-to-peak value and peak negative value are reduced in magnitude by a decay factor, such that the peak negative value and maximum peak-to-peak value decay over time. The decay factors used in computing the maximum peak-to-peak value and peak negative value are determined by the digital signal processing circuit and may be readily changed. As a consequence, high frequency processing performed by the digital signal processing circuit may be readily adapted to the particular frequency characteristics of the machine being analyzed for predictive maintenance, without modification of the analog circuitry of the data collector. The resulting maximum peak-to-peak value comprises a peak-detected digital output signal that may be stored and / or displayed to a user as a reflection of the high frequency content of the vibration signal, or frequency transformed for storage and / or display to a user.
Owner:ROCKWELL AUTOMATION
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