CN116227125A - Planetary gear box management system based on digital twin and modeling method - Google Patents
Planetary gear box management system based on digital twin and modeling method Download PDFInfo
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Abstract
The invention discloses a digital twin-based planetary gear box management system and a modeling method, wherein the digital twin-based planetary gear box management system comprises a virtual system and a real system, the virtual system corrects a constructed digital twin model by utilizing actual running data of a planetary gear box in the real system, and a planetary gear box digital twin body is constructed by an analysis mechanism of signal response, association relation and data characteristic fusion of the virtual-real system. According to the invention, the physical information and the data information are fused to construct the high-fidelity digital twin body of the planetary gear box, so that the construction of a digital twin-driven planetary gear box health management system is completed, the real-time on-line monitoring of the running state of the planetary gear box and the dynamic prediction of the residual service life are realized, and the efficient, safe and accurate running of the planetary gear box system is ensured.
Description
Technical Field
The invention belongs to the field of pipeline fault detection and diagnosis, and particularly relates to a planetary gear box management system based on digital twinning and a modeling method.
Background
The planetary gear box is used as a key part of a mechanical transmission system and is widely applied to the fields of aviation, wind power, high-speed rail and the like. However, because of the severe service environment and complex working conditions, unpredictable failures are unavoidable in spite of regular maintenance and inspection. The failure of the planetary gear box is light, the working performance of mechanical equipment is reduced, and the integral damage of the equipment is caused by heavy failure, so that huge economic loss and casualties are caused. Although the planetary gear box has the characteristics of high transmission efficiency, compact structure, stable operation and the like, the existing health management system of the planetary gear box has the following problems:
1. most of traditional predictive maintenance models of mechanical equipment are constructed based on assumed working conditions, the models are single and poor in accuracy, and dynamic changes of actual working conditions and performances of the equipment cannot be reflected on line in real time;
2. because mechanical equipment is constrained by various aspects such as time, space, execution cost and the like, the traditional management method is difficult to diagnose the fault condition of the equipment on line in real time, and the problems of untimely updating of the equipment health state, misdiagnosis or missed diagnosis of the equipment fault and the like are easily caused, so that the operation efficiency of the equipment and the safety of personnel are affected.
In order to solve the problems, a digital twin-based planetary gearbox management system and a modeling method are provided herein.
Disclosure of Invention
In order to solve the technical problems, the invention designs a planetary gear box management system and a modeling method based on digital twinning, which are used for constructing a high-fidelity digital twinning body of a planetary gear box by fusing physical information and data information, so that the construction of the digital twinning-driven planetary gear box health management system is completed, the real-time on-line monitoring of the running state of the planetary gear box and the dynamic prediction of the residual service life are realized, and the efficient, safe and accurate running of the planetary gear box system is ensured.
In order to achieve the technical effects, the invention is realized by the following technical scheme: the planetary gear box management system based on digital twinning comprises a virtual system and a real system, wherein the virtual system corrects a constructed digital twinning model by utilizing actual running data of a planetary gear box in the real system, and a planetary gear box digital twinning body is constructed by an analysis mechanism of virtual-real system signal response, association relation and data characteristic fusion;
the reality system also comprises actual working conditions, actual running information and running process sensing data of the planetary gear box;
the virtual system also comprises a digital twin body, a state monitoring module and an operation management module;
the digital twin body is used for reflecting the running state and performance degradation trend of the planetary gear box;
the state monitoring module is used for simulating the planetary gear box, monitoring in real time and simulating;
the operation management module comprises: a new operation task unit, an operation data recording and exporting unit and a historical data inquiring unit; the method is used for newly creating an operation task, recording and exporting operation data and inquiring historical data.
Further, the physical entities of the planetary gear box include: the planetary gear box comprises a gear box shell, a planet carrier, a planet gear, a sun gear, an input shaft and an output shaft.
Further, the digital twin body comprises a geometric model, a physical model, a behavior model and a rule model, is established by acquiring the shape structure, the physical attribute, the behavior response and the knowledge rule of the planetary gear box entity, and performs dynamic coupling interaction of the models by respectively extracting the geometric characteristics, the material parameters, the operation data and the constraint data of the planetary gear box from the four models, so as to initially construct the digital twin model of the planetary gear box;
further, the state monitoring module further includes: the system comprises a virtual interface interaction unit, a real-time running state monitoring unit and a real-time motion simulation unit;
the virtual interface interaction unit can observe the planetary gear box model in real time;
the real-time running state monitoring unit is used for carrying out observation analysis and prediction simulation on the planetary gear box;
the real-time motion simulation unit utilizes the collected real-time data to realize real-time mapping between the twin model and the physical entity.
Further, the virtual interface interaction unit is characterized in that: the virtual interface interaction unit can display real-time information and amplify and observe a real-time motion process by clicking a model component through a mouse, and meanwhile, the virtual interface interaction unit enters the interior of the planetary gear box model by adjusting the observation position in a scene to observe the internal structure of the planetary gear box model.
Further, the real-time running state monitoring unit includes: the system comprises a data acquisition module and a data analysis module, wherein the data acquisition module comprises a static data acquisition unit, a dynamic data acquisition unit and a data preprocessing unit, and the data analysis module comprises a state analysis unit and an optimization analysis unit; the real-time running state monitoring unit analyzes the running state of the planetary gear box according to the collected real-time data and the twin data, obtains running state data of the planetary gear box, predicts faults of the planetary gear box according to the running state data, obtains fault prediction information of the planetary gear box, and can analyze and optimize the running state process of the planetary gear box in real time according to the twin data, so that the running efficiency of the planetary gear box is improved.
Further, the real-time motion simulation unit is characterized in that: the real-time motion simulation unit drives the twin model to move according to the motion of the physical equipment, and real-time mapping between the twin model and the physical entity is realized by utilizing the acquired real-time data.
The modeling method of the planetary gear box based on digital twinning specifically comprises the following steps:
s1, carrying out dynamic coupling interaction of a model by acquiring geometrical characteristics, material parameters, operation data and constraint data of a planetary gear box entity extraction, and initially constructing a digital twin model of the planetary gear box;
s2, the digital twin model monitors the operation data of the planetary gear box in real time through a sensor and performs data preprocessing;
s3, inputting the preprocessed operation data into the digital twin model in real time, and performing simulation calculation on the output data of the planetary gear box by using the digital twin model to obtain simulation data of the digital twin model of the planetary gear box;
and S4, comparing the obtained simulation data with operation data in a corresponding time interval, and carrying out parameter adjustment and correction on the digital twin model according to a criterion function until the real-time synchronous digital twin model of the planetary gear box is obtained.
The beneficial effects of the invention are as follows:
real-time online monitoring and automatic updating of the running parameters of the planetary gear box are realized, the problems of poor accuracy and excessive singleness of the traditional model are solved, and the real-time performance and high fidelity of the model are improved;
the on-line diagnosis of the fault condition of the planetary gear box and the dynamic prediction of the residual service life are realized, the running state of the planetary gear box is analyzed on line, the health state of the planetary gear box is estimated in real time, the planetary gear box is ensured to always work in the health state, and the working efficiency of the system is improved; the visual interface of the system provides a visual and convenient man-machine interaction terminal, reflects the running state and the health state of the planetary gear box system in real time, is convenient for operators to monitor the running condition of the planetary gear box system, and ensures the safe running of the system.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a digital twinning-based planetary gearbox management system according to the present invention;
FIG. 2 is a schematic diagram of a modeling step of a digital twin model of a planetary gear box according to the present invention;
FIG. 3 is a schematic view of a digital twin model of a planetary gearbox according to the present invention;
FIG. 4 is a schematic diagram of a monitoring platform of a digital twin-based planetary gearbox management system according to the present invention;
FIG. 5 is a schematic diagram of an operation state monitoring module according to the present invention;
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
As shown in fig. 1 to 5, a digital twin-based planetary gear box health management system comprises a virtual system and a real system, wherein the virtual system corrects a constructed digital twin model by using actual running data of a planetary gear box in the real system, and a planetary gear box digital twin body is constructed by an analysis mechanism of signal response, association relation and data characteristic fusion of the virtual-real system; the reality system also comprises actual working conditions, actual running information and running process sensing data of the planetary gear box; the virtual system also comprises a digital twin body, a state monitoring module and an operation management module; the digital twin body is used for reflecting the running state and performance degradation trend of the planetary gear box; the state monitoring module is used for simulating the planetary gear box, monitoring in real time and simulating; the operation management module comprises: a new operation task unit, an operation data recording and exporting unit and a historical data inquiring unit; the method is used for newly creating an operation task, recording and exporting operation data and inquiring historical data.
The physical entities of the planetary gear box include: the planetary gear box comprises a gear box shell, a planet carrier, a planet gear, a sun gear, an input shaft and an output shaft.
The digital twin body comprises a geometric model, a physical model, a behavior model and a rule model, is established by acquiring the shape structure, the physical attribute, the behavior response and the knowledge rule of the planetary gear box entity, and performs dynamic coupling interaction of the model by respectively extracting geometric characteristics, material parameters, operation data and constraint data of the planetary gear box from the four models to initially construct the digital twin model of the planetary gear box;
the foregoing state monitoring module further includes: the system comprises a virtual interface interaction unit, a real-time running state monitoring unit and a real-time motion simulation unit; the virtual interface interaction unit can observe the planetary gear box model in real time; the real-time running state monitoring unit is used for carrying out observation analysis and prediction simulation on the planetary gear box; the real-time motion simulation unit utilizes the collected real-time data to realize real-time mapping between the twin model and the physical entity.
The virtual interface interaction unit is characterized in that: the virtual interface interaction unit can display real-time information and amplify and observe a real-time motion process by clicking a model component through a mouse, and meanwhile, the virtual interface interaction unit enters the interior of the planetary gear box model by adjusting the observation position in a scene to observe the internal structure of the planetary gear box model.
The foregoing real-time running state monitoring unit includes: the system comprises a data acquisition module and a data analysis module, wherein the data acquisition module comprises a static data acquisition unit, a dynamic data acquisition unit and a data preprocessing unit, and the data analysis module comprises a state analysis unit and an optimization analysis unit; the real-time running state monitoring unit analyzes the running state of the planetary gear box according to the acquired real-time data and the twin data to obtain running state data of the planetary gear box, predicts faults of the planetary gear box according to the running state data to obtain fault prediction information of the planetary gear box, and can analyze and optimize the running state process of the planetary gear box in real time according to the twin data to improve the running efficiency of the planetary gear box;
the real-time motion simulation unit is characterized in that: the real-time motion simulation unit drives the twin model to move according to the motion of the physical equipment, and real-time mapping between the twin model and the physical entity is realized by utilizing the acquired real-time data.
The on-line diagnosis of the fault condition of the planetary gear box and the dynamic prediction of the residual service life are realized, the running state of the planetary gear box is analyzed on line, the health state of the planetary gear box is estimated in real time, the planetary gear box is ensured to always work in the health state, and the working efficiency of the system is improved; the visual interface of the system provides a visual and convenient man-machine interaction terminal, reflects the running state and the health state of the planetary gear box system in real time, is convenient for operators to monitor the running condition of the planetary gear box system, and ensures the safe running of the system.
Example 2
As shown in fig. 1 to 5, the invention discloses a modeling method of a planetary gear box based on digital twinning, which specifically comprises the following steps:
s1, carrying out dynamic coupling interaction of a model by acquiring geometrical characteristics, material parameters, operation data and constraint data of a planetary gear box entity extraction, and initially constructing a digital twin model of the planetary gear box;
s2, the digital twin model monitors the operation data of the planetary gear box in real time through a sensor and performs data preprocessing;
s3, inputting the preprocessed operation data into the digital twin model in real time, and performing simulation calculation on the output data of the planetary gear box by using the digital twin model to obtain simulation data of the digital twin model of the planetary gear box;
and S4, comparing the obtained simulation data with operation data in a corresponding time interval, and carrying out parameter adjustment and correction on the digital twin model according to a criterion function until the real-time synchronous digital twin model of the planetary gear box is obtained.
The real-time online monitoring and automatic updating of the running parameters of the planetary gear box are realized, the problems of poor accuracy and excessive singleness of the traditional model are solved, and the real-time performance and high fidelity of the model are improved.
In the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended only to assist in the explanation of the invention. The preferred embodiments are not exhaustive or to limit the invention to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best understand and utilize the invention. The invention is limited only by the claims and the full scope and equivalents thereof.
Claims (8)
1. A planetary gear box management system based on digital twinning, which is characterized in that: the system comprises a virtual system and a real system, wherein the virtual system corrects the constructed digital twin model by utilizing actual running data of a planetary gear box in the real system, and a planetary gear box digital twin body is constructed by an analysis mechanism of virtual-real system signal response, association relation and data characteristic fusion;
the reality system also comprises actual working conditions, actual running information and running process sensing data of the planetary gear box;
the virtual system also comprises a digital twin body, a state monitoring module and an operation management module;
the digital twin body is used for reflecting the running state and performance degradation trend of the planetary gear box;
the state monitoring module is used for simulating the planetary gear box, monitoring in real time and simulating;
the operation management module comprises: a new operation task unit, an operation data recording and exporting unit and a historical data inquiring unit; the method is used for newly creating an operation task, recording and exporting operation data and inquiring historical data.
2. A digital twinning-based planetary gearbox management system according to claim 1, wherein: the physical entities of the planetary gear box comprise: the planetary gear box comprises a gear box shell, a planet carrier, a planet gear, a sun gear, an input shaft and an output shaft.
3. A digital twinning-based planetary gearbox management system according to claim 1, wherein: the digital twin body comprises a geometric model, a physical model, a behavior model and a rule model, is established by acquiring the shape structure, the physical attribute, the behavior response and the knowledge rule of the planetary gear box entity, and performs dynamic coupling interaction of the models by respectively extracting the geometric characteristics, the material parameters, the operation data and the constraint data of the planetary gear box from the four models, so as to initially construct the digital twin model of the planetary gear box.
4. A digital twinning-based planetary gearbox management system according to claim 1, wherein: the state monitoring module further comprises: the system comprises a virtual interface interaction unit, a real-time running state monitoring unit and a real-time motion simulation unit;
the virtual interface interaction unit can observe the planetary gear box model in real time;
the real-time running state monitoring unit is used for carrying out observation analysis and prediction simulation on the planetary gear box;
the real-time motion simulation unit utilizes the collected real-time data to realize real-time mapping between the twin model and the physical entity.
5. A digital twinning-based planetary gearbox management system according to claim 4, wherein: the virtual interface interaction unit is characterized in that: the virtual interface interaction unit can display real-time information and amplify and observe a real-time motion process by clicking a model component through a mouse, and meanwhile, the virtual interface interaction unit enters the interior of the planetary gear box model by adjusting the observation position in a scene to observe the internal structure of the planetary gear box model.
6. A digital twinning-based planetary gearbox management system according to claim 4, wherein: the real-time running state monitoring unit comprises: the system comprises a data acquisition module and a data analysis module, wherein the data acquisition module comprises a static data acquisition unit, a dynamic data acquisition unit and a data preprocessing unit, and the data analysis module comprises a state analysis unit and an optimization analysis unit; the real-time running state monitoring unit analyzes the running state of the planetary gear box according to the collected real-time data and the twin data to obtain running state data of the planetary gear box, predicts faults of the planetary gear box according to the running state data to obtain fault prediction information of the planetary gear box, and can analyze and optimize the running state process of the planetary gear box in real time according to the twin data.
7. A digital twinning-based planetary gearbox management system according to claim 4, wherein: the real-time motion simulation unit is characterized in that: the real-time motion simulation unit drives the twin model to move according to the motion of the physical equipment, and real-time mapping between the twin model and the physical entity is realized by utilizing the acquired real-time data.
8. Modeling method of a planetary gearbox based on digital twinning according to any of the claims 1 to 7, characterized in that it comprises in particular the following steps:
s1, carrying out dynamic coupling interaction of a model by acquiring geometrical characteristics, material parameters, operation data and constraint data of a planetary gear box entity extraction, and initially constructing a digital twin model of the planetary gear box;
s2, the digital twin model monitors the operation data of the planetary gear box in real time through a sensor and performs data preprocessing;
s3, inputting the preprocessed operation data into the digital twin model in real time, and performing simulation calculation on the output data of the planetary gear box by using the digital twin model to obtain simulation data of the digital twin model of the planetary gear box;
and S4, comparing the obtained simulation data with operation data in a corresponding time interval, and carrying out parameter adjustment and correction on the digital twin model according to a criterion function until the real-time synchronous digital twin model of the planetary gear box is obtained.
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| CN117850539A (en) * | 2023-12-26 | 2024-04-09 | 杭州铬络科技有限公司 | Digital twinning-based time synchronization method, rail transit management method and system |
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