KR-20260067479-A - Method for diagnosing construction machinery

Abstract

The present invention relates to a method for determining whether there is an abnormality in a rotating machine. The present invention comprises the steps of: measuring vibration data from a sensor of the rotating machine; processing the vibration data to obtain reference data having an orbit; installing the rotating machine and receiving vibration data from the sensor in real time to obtain output data having an orbit; and comparing the output data with the reference data to monitor whether there is an abnormality in the rotating machine.

Inventors

• 최호영
• 오동진
• 조석찬
• 문현섭

Assignees

• 에이치디씨랩스 주식회사

Dates

Publication Date

20260513

Application Date

20241105

Claims (4)

1. Step of measuring vibration data from a sensor of a rotating machine; A step of processing the above vibration data to obtain reference data having an orbit; A step of installing the above-mentioned rotating machine and receiving vibration data from the above-mentioned sensor in real time to acquire output data having a trajectory; and A method for determining whether a rotating machine is abnormal, comprising the step of comparing the output data and the reference data to monitor whether the rotating machine is abnormal.
2. In Article 1, In the step of monitoring for abnormalities in the above-mentioned rotating machinery A method for determining whether a rotating machine is abnormal by comparing the size of the trajectory of the reference data with the size of the trajectory of the output data.
3. In Article 1, In the step of monitoring for abnormalities in the above-mentioned rotating machinery A method for determining whether a rotating machine is abnormal by comparing a singularity of the trajectory of the reference data with a singularity of the trajectory of the output data.
4. In Article 1, In the step of acquiring the above reference data A method for determining whether a rotating machine is abnormal, comprising obtaining first reference data obtained by driving the rotating machine in a normal state and obtaining second reference data obtained by driving the rotating machine in an abnormal state.

Description

Method for diagnosing construction machinery abnormalities The present invention relates to a diagnostic system for a rotating machine and a method for determining whether the rotating machine is abnormal. This research is a project supported by the Ministry of Trade, Industry and Energy (MOTIE) and the Korea Energy Technology Evaluation and Planning Institute (KETEP). (No. 20212020800120) Failures in mechanical and electronic equipment used in key industries of modern society, such as construction manufacturing, defense, and information and communication technology, occur frequently. Since failures occurring under unforeseen circumstances are highly critical, prognostics and health management (PHM) is applied with great importance. In particular, various mechanical equipment is used at construction sites, and devices such as electric motors with rotating shafts are essential equipment for construction sites. However, due to the unique characteristics of each site and the large size of construction mechanical equipment, it has been difficult to predict or diagnose failures of rotating machinery tailored to the specific construction site. However, fault diagnosis technology capable of preventing accidents caused by failures in rotating machinery used in construction is emerging as an important aspect alongside maintenance. Korean Published Patent Application No. 10-2005-0063441 discloses a device for diagnosing abnormal conditions in induction motors. However, for certain low-energy-level failures, such as bearing failures, the aforementioned diagnostic device has difficulty easily detecting abnormal conditions due to noise, and there are difficulties in accurately predictive maintenance. FIG. 1 is a diagram illustrating a diagnostic system for a rotating machine according to one embodiment of the present invention. Figure 2 is a cross-sectional view illustrating the rotating machine of Figure 1. Figure 3 is a drawing illustrating the diagnostic device of Figure 1. Figure 4 is a drawing illustrating the storage device of Figure 1. Figures 5 and 6 are diagrams illustrating the generation of an axial trajectory from vibration data in the diagnostic device of Figure 3. Figure 7 is a diagram explaining the determination of whether there is an abnormality in the diagnostic device of Figure 3. FIG. 8 is a flowchart illustrating a method for determining whether a rotating machine is abnormal according to another embodiment of the present invention. Figures 9 and 10 are flowcharts illustrating any one of the steps of Figure 8. The present invention is capable of various modifications and may have various embodiments; specific embodiments are illustrated in the drawings and described in detail in the detailed description. The effects and features of the present invention, and the methods for achieving them, will become clear by referring to the embodiments described below in detail together with the drawings. However, the present invention is not limited to the embodiments disclosed below but can be implemented in various forms. Hereinafter, embodiments of the present invention will be described in detail with reference to the attached drawings. When describing with reference to the drawings, identical or corresponding components are given the same reference numerals, and redundant descriptions thereof will be omitted. In the following embodiments, terms such as first, second, etc. are used not in a limiting sense, but for the purpose of distinguishing one component from another component. In the following examples, singular expressions include plural expressions unless the context clearly indicates otherwise. In the following embodiments, terms such as "include" or "have" mean that the features or components described in the specification are present, and do not preclude the possibility that one or more other features or components may be added. In the following embodiments, when a part such as a film, region, or component is described as being on or above another part, it includes not only cases where it is directly on top of another part, but also cases where another film, region, or component is interposed in between. In the drawings, the size of components may be exaggerated or reduced for convenience of explanation. For example, the size and thickness of each component shown in the drawings are depicted arbitrarily for convenience of explanation, so the present invention is not necessarily limited to what is illustrated. Where an embodiment can be implemented differently, a specific process sequence may be performed differently from the order described. For example, two processes described consecutively may be performed substantially simultaneously or proceed in the reverse order of the description. In the following embodiments, when it is stated that a membrane, region, component, etc. is connected, it includes not only cases where the membrane, region, or component is directly connected, but also cases where