CN114674551B - Gear abrasion energy monitoring method, device and system and electronic equipment - Google Patents
Gear abrasion energy monitoring method, device and system and electronic equipment Download PDFInfo
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- CN114674551B CN114674551B CN202210219928.3A CN202210219928A CN114674551B CN 114674551 B CN114674551 B CN 114674551B CN 202210219928 A CN202210219928 A CN 202210219928A CN 114674551 B CN114674551 B CN 114674551B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/02—Gearings; Transmission mechanisms
- G01M13/021—Gearings
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/02—Gearings; Transmission mechanisms
- G01M13/028—Acoustic or vibration analysis
Abstract
The embodiment of the application provides a method, a device, a system, electronic equipment and a storage medium for monitoring abrasion energy of gears, wherein the method comprises the following steps: acquiring discretization node data corresponding to discretization nodes of a gear meshing area; obtaining the relative displacement of the gear meshing area in the z-axis direction and the relative displacement of the discretization node in the x-axis direction according to the discretization node data; obtaining the abrasion energy of the discretization node in the z-axis direction according to the relative displacement in the z-axis direction; obtaining the abrasion energy of the discretization node in the x-axis direction according to the relative displacement in the x-axis direction; and obtaining the abrasion energy of the gear according to the abrasion energy in the z-axis direction and the abrasion energy in the x-axis direction. By implementing the embodiment of the application, the abrasion condition of the gear can be found in time, early prevention is realized, and the cost is reduced.
Description
Technical Field
The application relates to the technical field of gear energy monitoring, in particular to a method, a device, a system, electronic equipment and a computer readable storage medium for monitoring abrasion energy of gears.
Background
The existing gear fatigue test method is developed on a gear tester. And stopping the test when the contact fatigue failure occurs on the tooth surface or the cycle number of the stress of the tooth surface reaches a specified cycle number, and obtaining life data of the tooth surface under test stress. And (3) determining a contact fatigue characteristic curve and a contact fatigue limit stress of the test gear through statistical treatment of the test data.
However, the conventional gear fatigue test method needs to be repeatedly and circularly loaded for a long time, has very high dependence on manpower, causes low fatigue durability test efficiency, consumes large time and manpower cost, and is not standard in judgment. In addition, the existing gear fatigue test method cannot monitor the abrasion condition of the gear tooth surface in real time in the test process, can not discover and generate reports in time at the early stage of gear fatigue failure, and is not beneficial to early prevention of gear fatigue failure.
Disclosure of Invention
The embodiment of the application aims to provide a method and a device for monitoring abrasion energy of gears, electronic equipment and a computer readable storage medium, which can discover the abrasion condition of the gears in time and make early prevention.
In a first aspect, an embodiment of the present application provides a method for monitoring wear energy of a gear, the method including:
acquiring discretization node data corresponding to discretization nodes of a gear meshing area;
obtaining the relative displacement of the gear meshing area in the z-axis direction and the relative displacement of the discretization node in the x-axis direction according to the discretization node data;
obtaining the abrasion energy of the discretization node in the z-axis direction according to the relative displacement in the z-axis direction;
obtaining the abrasion energy of the discretization node in the x-axis direction according to the relative displacement in the x-axis direction;
and obtaining the abrasion energy of the gear according to the abrasion energy in the z-axis direction and the abrasion energy in the x-axis direction.
In the implementation process, the abrasion energy of the gears in the z axis and the x axis is obtained according to the discretization node data of the gear meshing area, and finally the abrasion energy of the discretization node is obtained, so that the accuracy of monitoring the abrasion energy of the gears is ensured, the early prevention of the abrasion condition of the gears is improved, and the cost loss is reduced.
Further, the step of obtaining the relative displacement of the gear engagement region in the z-axis direction and the relative displacement of the discretized node in the x-axis direction according to the discretized node data includes:
the relative displacement of the discretized node in the z-axis direction is obtained according to the following formula:
the relative displacement of the discretized node in the x-axis direction is obtained according to the following formula:
wherein Δz i For the relative displacement of the discretized nodes in the z-axis direction,for discretization node A, the mode-shape coefficient in the z-axis direction, +.>For discretizing the mode-shape coefficient of node B in the z-axis direction, deltax i For the relative displacement of the discretized nodes in the x-axis direction,/or->For discretization node A, in the x-axis direction, the mode-shape coefficient is +.>Is the mode shape coefficient of the discretized node B in the x-axis direction.
In the implementation process, the relative displacement of the discretization node in the x axis and the relative displacement of the discretization node in the z axis are obtained, so that abrasion of the discretization node in a plurality of directions can be monitored, and the abrasion energy can be monitored more accurately.
Further, the step of obtaining the abrasion energy of the discretized node in the z-axis direction according to the relative displacement in the z-axis direction includes:
the stress of the discretized node in the z-axis direction is obtained according to the following formula:
the abrasion energy of the discretization node in the z-axis direction is obtained according to the stress of the discretization node in the z-axis direction, and the formula is as follows:
wherein E is i(z) For the abrasion energy of the discretized node in the z-axis direction, F i(z) For the force applied to the discretized node in the z-axis direction, k is the contact stiffness,for discretizing the displacement of node A in the z-axis direction, -/->Is the z-axis direction instantaneous velocity of discretized node A,/->For discretizing the displacement of node B in the z-axis direction, -/->Is the z-axis instantaneous velocity of discretized node B.
In the implementation process, the abrasion energy of the discretization node in the z-axis direction is obtained, so that errors can be reduced, the abrasion energy is monitored more comprehensively, and the damage caused by breakage of gears due to excessive abrasion is avoided.
Further, the step of obtaining the abrasion energy of the discretized node in the x-axis direction according to the relative displacement in the x-axis direction includes:
the stress of the discretization node in the x-axis direction is obtained according to the following formula:
the abrasion energy of the discretization node in the z-axis direction is obtained according to the stress of the discretization node in the z-axis direction, and the formula is as follows:
wherein E is i(x) For the abrasion energy of the discretized node in the x-axis direction, F i(x) For the force applied by the discretization node in the x-axis direction, k is the contact stiffness,for discretizing the displacement of node A in the x-axis direction,/->Is the x-axis direction instantaneous velocity of discretized node A,/->For discretizing the displacement of node B in the x-axis direction,/->Is the x-axis instantaneous velocity of the discretized node B.
In the implementation process, the abrasion energy of the discretization node in the x-axis direction is obtained, so that errors can be reduced, the gear is prevented from being damaged due to overlarge stress in the x-axis direction, the abrasion energy is monitored more comprehensively, unnecessary damage is further avoided, and the service life of the gear is prolonged.
Further, the wear energy of the gear is obtained from the wear energy in the z-axis direction and the wear energy in the x-axis direction by the following formula:
wherein E is i(z) For the abrasion energy of the discretized node in the z-axis direction E i(x) And E is the abrasion energy of the gear in the x-axis direction and E is the abrasion energy of the discretization node.
In the implementation process, the change and abrasion conditions of each discretization node of the gear in the running process of the gear can be completely monitored, so that the analysis and monitoring of the abrasion conditions of the gear are facilitated, and the authenticity and effectiveness of the monitoring of the gear are ensured.
Further, the step of obtaining discretized node data corresponding to the discretized nodes of the gear meshing area includes:
acquiring node data corresponding to discretized nodes of the gear meshing area;
discretizing the node data to obtain discretized node data.
In the implementation process, the node data of the gear meshing area are discretized, so that the data obtained in the monitoring process are more referential, and errors caused by inaccurate stress of the obtained gears and error in monitoring of abrasion energy of the gears are avoided.
In a second aspect, an embodiment of the present application further provides a device for monitoring wear energy of a gear, the device including:
the data acquisition module is used for acquiring discretization node data corresponding to the discretization nodes of the gear meshing area;
the relative displacement obtaining module is used for obtaining the relative displacement of the gear meshing area in the z-axis direction and the relative displacement of the discretization node in the x-axis direction according to the discretization node data;
the z-axis abrasion energy obtaining module is used for obtaining abrasion energy of the discretization node in the z-axis direction according to the relative displacement of the z-axis direction;
the x-axis abrasion energy obtaining module is used for obtaining abrasion energy of the discretization node in the x-axis direction according to the relative displacement of the x-axis direction;
and the abrasion energy obtaining module is used for obtaining the abrasion energy of the gear according to the abrasion energy in the z-axis direction and the abrasion energy in the x-axis direction.
In the implementation process, the abrasion energy of the gears in the z axis and the x axis is obtained according to the discretization node data of the gear meshing area, and finally the abrasion energy of the discretization node is obtained, so that the accuracy of monitoring the abrasion energy of the gears is ensured, the early prevention of the abrasion condition of the gears is improved, and the cost loss is reduced.
In a third aspect, an embodiment of the present application provides a system for monitoring wear energy of a gear, including: the device comprises a driving motor, a load motor, a driving gear, a load gear, a high-precision camera, a torque and rotation speed sensor, a monitoring device of abrasion energy of the gear, a real-time monitoring and early warning device and a lighting device;
wherein, the monitoring device of the wearing and tearing energy of gear includes:
the data acquisition module is used for acquiring discretization node data corresponding to the discretization nodes of the gear meshing area;
the relative displacement obtaining module is used for obtaining the relative displacement of the gear meshing area in the z-axis direction and the relative displacement of the discretization node in the x-axis direction according to the discretization node data;
the z-axis abrasion energy obtaining module is used for obtaining abrasion energy of the discretization node in the z-axis direction according to the relative displacement of the z-axis direction;
the x-axis abrasion energy obtaining module is used for obtaining abrasion energy of the discretization node in the x-axis direction according to the relative displacement of the x-axis direction;
and the abrasion energy obtaining module is used for obtaining the abrasion energy of the gear according to the abrasion energy in the z-axis direction and the abrasion energy in the x-axis direction.
In a fourth aspect, an electronic device provided by an embodiment of the present application includes: a memory, a processor and a computer program stored in the memory and executable on the processor, the processor implementing the steps of the method according to any one of the first aspects when the computer program is executed.
In a fifth aspect, an embodiment of the present application provides a computer readable storage medium, where instructions are stored, when the instructions are executed on a computer, to cause the computer to perform the method according to any one of the first aspects.
In a sixth aspect, embodiments of the present application provide a computer program product, which when run on a computer causes the computer to perform the method according to any of the first aspects.
Additional features and advantages of the disclosure will be set forth in the description which follows, or in part will be obvious from the description, or may be learned by practice of the techniques of the disclosure.
And can be implemented in accordance with the teachings of the specification, the following detailed description of the preferred embodiments of the application, taken in conjunction with the accompanying drawings.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments of the present application will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and should not be considered as limiting the scope, and other related drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic flow chart of a method for monitoring the wear energy of a gear according to an embodiment of the present application;
fig. 2 is a schematic structural view of a meshing area of a gear according to an embodiment of the present application;
FIG. 3 is a schematic structural diagram of a device for monitoring the wear energy of gears according to an embodiment of the present application;
fig. 4 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings in the embodiments of the present application.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures. Meanwhile, in the description of the present application, the terms "first", "second", and the like are used only to distinguish the description, and are not to be construed as indicating or implying relative importance.
The following describes in further detail the embodiments of the present application with reference to the drawings and examples. The following examples are illustrative of the application and are not intended to limit the scope of the application.
Example 1
Fig. 1 is a flow chart of a method for monitoring abrasion energy of a gear according to an embodiment of the present application, as shown in fig. 1, the method includes:
s1, acquiring discretization node data corresponding to discretization nodes of a gear meshing area;
s2, obtaining relative displacement of the gear meshing area in the z-axis direction and relative displacement of the discretization node in the x-axis direction according to discretization node data;
s3, obtaining abrasion energy of the discretized node in the z-axis direction according to the relative displacement in the z-axis direction;
s4, obtaining abrasion energy of the discretized node in the x-axis direction according to the relative displacement in the x-axis direction;
and S5, obtaining the abrasion energy of the gear according to the abrasion energy in the z-axis direction and the abrasion energy in the x-axis direction.
In the implementation process, the abrasion energy of the gears in the z axis and the x axis is obtained according to the discretization node data of the gear meshing area, and finally the abrasion energy of the discretization node is obtained, so that the accuracy of monitoring the abrasion energy of the gears is ensured, the early prevention of the abrasion condition of the gears is improved, and the cost loss is reduced.
Further, S1 includes:
acquiring node data corresponding to discretized nodes of a gear meshing area;
discretizing the node data to obtain discretized node data.
In the implementation process, the node data of the gear meshing area are discretized, so that the data obtained in the monitoring process are more referential, and errors caused by inaccurate stress of the obtained gears and error in monitoring of abrasion energy of the gears are avoided.
Illustratively, the gear engagement region is discretized by a node, as shown in fig. 2, a point a is located at a contact region on the driving gear at a certain moment, a point B is located at a contact region of the load gear, the point a and the point B are referred to as an i-th pair discretized node, and the entire gear contact region can be divided into n pairs of discretized nodes (the value of n is the same as the number of divided sub-regions of the digital image correlation method).
Further, S2 includes:
the relative displacement of the discretized node in the z-axis direction is obtained according to the following formula:
the relative displacement of the discretized node in the x-axis direction is obtained according to the following formula:
wherein Δz i For the relative displacement of the discretized nodes in the z-axis direction,for discretization node A, the mode-shape coefficient in the z-axis direction, +.>For discretizing the mode-shape coefficient of node B in the z-axis direction, deltax i For the relative displacement of discretized nodes in the x-axis direction,/->Is the vibration mode coefficient of the discretization node A in the x-axis direction，Is the mode shape coefficient of the discretized node B in the x-axis direction.
In the implementation process, the relative displacement of the discretization node in the x axis and the relative displacement of the discretization node in the z axis are obtained, so that abrasion of the discretization node in a plurality of directions can be monitored, and the abrasion energy can be monitored more accurately.
Further, S3 includes:
the force of the discretized node in the z-axis direction is obtained according to the following formula:
the abrasion energy of the discretized node in the z-axis direction is obtained according to the stress of the discretized node in the z-axis direction, and the formula is as follows:
wherein E is i(z) To discretize the wear energy of the joint in one vibration period T in the z-axis direction, F i(z) For the stress of the discretization node in the z-axis direction, k is the contact stiffness, and the value is 10 according to the different materials 7 ～10 10 A constant value of N/m,for discretizing the displacement of node A in the z-axis direction, -/->Is the z-axis direction instantaneous velocity of discretized node A,/->For discretizing the displacement of node B in the z-axis direction, -/->Is the z-axis instantaneous velocity of discretized node B.
In the implementation process, the abrasion energy of the discretization node in the z-axis direction is obtained, so that errors can be reduced, the abrasion energy is monitored more comprehensively, and the damage caused by breakage of gears due to excessive abrasion is avoided.
Wherein the displacements of the points A and B are respectively recorded asAnd->Displacement U i From the vibration mode coefficients x in two directions i And z i Is composed of the components. The motion form of each direction can be written as a simple harmonic motion equation:
wherein phi is i(z) Is the amplitude in the z-axis direction, phi i(x) Is the amplitude in the x-axis direction, ω is the vibration frequency, θ i(z) Is the phase of the z-axis, θ i(x) Is the phase of the x-axis.
Further, S4 includes:
the force of the discretized node in the x-axis direction is obtained according to the following formula:
the abrasion energy of the discretized node in the z-axis direction is obtained according to the stress of the discretized node in the z-axis direction, and the formula is as follows:
wherein E is i(x) For a period T of vibration of the discretized node in the x-axis directionInternal abrasion energy, F i(x) The force of the discretized node in the x-axis direction is that k is the contact stiffness, and the value is 10 according to the different materials 7 ～10 10 A constant value of N/m,for discretizing the displacement of node A in the x-axis direction,/->Is the x-axis direction instantaneous velocity of discretized node A,/->For discretizing the displacement of node B in the x-axis direction,/->Is the x-axis instantaneous velocity of the discretized node B.
In the implementation process, the abrasion energy of the discretization node in the x-axis direction is obtained, so that errors can be reduced, the gear is prevented from being damaged due to overlarge stress in the x-axis direction, the abrasion energy is monitored more comprehensively, unnecessary damage is further avoided, and the service life of the gear is prolonged.
Further, in S5, the wear energy of the gear is obtained from the wear energy in the z-axis direction and the wear energy in the x-axis direction by the following formula:
wherein E is i(z) For discretizing the wear energy of the joint in one vibration period T in the z-axis direction, E i(x) The abrasion energy of the discretization node in one vibration period T in the x-axis direction is the abrasion energy of the gear.
In the implementation process, the change and abrasion conditions of each discretization node of the gear in the running process of the gear can be completely monitored, so that the analysis and monitoring of the abrasion conditions of the gear are facilitated, and the authenticity and effectiveness of the monitoring of the gear are ensured.
Example two
In order to perform a corresponding method of the above embodiment to achieve the corresponding functions and technical effects, a device for monitoring the wear energy of gears is provided below, as shown in fig. 3, and includes:
the data acquisition module 1 is used for acquiring discretized node data corresponding to the discretized nodes of the gear meshing area;
the relative displacement obtaining module 2 is used for obtaining the relative displacement of the gear meshing area in the z-axis direction and the relative displacement of the discretization node in the x-axis direction according to the discretization node data;
the z-axis abrasion energy obtaining module 3 is used for obtaining abrasion energy of the discretized node in the z-axis direction according to the relative displacement in the z-axis direction;
the x-axis abrasion energy obtaining module 4 is used for obtaining abrasion energy of the discretized node in the x-axis direction according to the relative displacement in the x-axis direction;
and the abrasion energy obtaining module 5 is used for obtaining the abrasion energy of the gears according to the abrasion energy in the z-axis direction and the abrasion energy in the x-axis direction.
Further, the data acquisition module 1 is further configured to:
acquiring node data corresponding to discretized nodes of a gear meshing area;
discretizing the node data to obtain discretized node data.
Further, the relative displacement obtaining module 2 is further configured to:
the relative displacement of the discretized node in the z-axis direction is obtained according to the following formula:
the relative displacement of the discretized node in the x-axis direction is obtained according to the following formula:
wherein Δz i For the relative displacement of the discretized nodes in the z-axis direction,for discretization node A, the mode-shape coefficient in the z-axis direction, +.>For discretizing the mode-shape coefficient of node B in the z-axis direction, deltax i For the relative displacement of discretized nodes in the x-axis direction,/->For discretizing the mode shape coefficient of the node A in the x-axis direction,is the mode shape coefficient of the discretized node B in the x-axis direction.
Further, the z-axis wear energy obtaining module 3 is also configured to:
the force of the discretized node in the z-axis direction is obtained according to the following formula:
the abrasion energy of the discretized node in the z-axis direction is obtained according to the stress of the discretized node in the z-axis direction, and the formula is as follows:
wherein E is i(z) To discretize the wear energy of the joint in the z-axis direction, F i(z) Is the stress of the discretization node in the z-axis direction, k is the contact stiffness,for discretizing node A in the z-axis directionDisplacement (I)>Is the z-axis direction instantaneous velocity of discretized node A,/->For discretizing the displacement of node B in the z-axis direction, -/->Is the z-axis instantaneous velocity of discretized node B.
Further, the x-axis wear energy obtaining module 4 is also configured to:
the force of the discretized node in the x-axis direction is obtained according to the following formula:
the abrasion energy of the discretized node in the z-axis direction is obtained according to the stress of the discretized node in the z-axis direction, and the formula is as follows:
wherein E is i(x) To discretize the wear energy of the node in the x-axis direction, F i(x) Is the stress of the discretization node in the x-axis direction, k is the contact stiffness,for discretizing the displacement of node A in the x-axis direction,/->Is the x-axis direction instantaneous velocity of discretized node A,/->For discretizing the displacement of node B in the x-axis direction,/->Is the x-axis instantaneous velocity of the discretized node B.
Further, the wear energy obtaining module 5 is further configured to obtain the wear energy of the gear according to the wear energy in the z-axis direction and the wear energy in the x-axis direction by the following formula:
wherein E is i(z) For discretizing the wear energy of the joint in the z-axis direction E i(x) The abrasion energy of the discretization node in the x-axis direction is E, and the abrasion energy of the gear is E.
The above-described device for monitoring the wear energy of gears can implement the method of the first embodiment. The options in the first embodiment described above also apply to this embodiment, and are not described in detail here.
The rest of the embodiments of the present application may refer to the content of the first embodiment, and in this embodiment, no further description is given.
Example III
The embodiment of the application provides a system for monitoring abrasion energy of gears, which comprises the following components: the device comprises a driving motor, a load motor, a driving gear, a load gear, a high-precision camera, a torque and rotation speed sensor, a monitoring device of abrasion energy of the gear, a real-time monitoring and early warning device and a lighting device;
wherein, the monitoring device of the wearing and tearing energy of gear includes:
the data acquisition module is used for acquiring discretization node data corresponding to the discretization nodes of the gear meshing area;
the relative displacement obtaining module is used for obtaining the relative displacement of the gear meshing area in the z-axis direction and the relative displacement of the discretization node in the x-axis direction according to the discretization node data;
the z-axis abrasion energy obtaining module is used for obtaining abrasion energy of the discretized node in the z-axis direction according to the relative displacement in the z-axis direction;
the x-axis abrasion energy obtaining module is used for obtaining abrasion energy of the discretized node in the x-axis direction according to the relative displacement in the x-axis direction;
and the abrasion energy obtaining module is used for obtaining abrasion energy of the gears according to the abrasion energy in the z-axis direction and the abrasion energy in the x-axis direction.
The system for monitoring the abrasion energy of the gears provided by the embodiment of the application monitors the energy loss condition of the gears in the process of engagement abrasion in real time, and gives out early warning in time after the gears reach the fatigue threshold value, so that a reference is provided for predicting the residual fatigue life of the subsequent gears.
And, the test data may be used to: abnormal abrasion energy conditions are found in time, and the matching degree between gears and the consistency of the production process are ensured; the fatigue damage accumulation model of the metal mechanical part is perfected, the design of the related performance of the gear is guided by deducing an empirical formula, and excessive abrasion of the gear during operation is avoided; and building a convolutional neural network algorithm for predicting the fatigue residual life of the gear by accumulating a fatigue endurance test failure characteristic parameter database.
The driving motor and the load motor are respectively arranged on the driving gear and the load gear, the torque rotation speed sensor is connected with the driving motor and the load motor, the high-precision camera is arranged in the middle of the driving gear and the load gear, the meshing area of the two gears is shot, the light source of the lighting device irradiates the meshing area of the two gears, the image signal of the high-precision camera and the sensor signal of the torque rotation speed sensor are output to the data acquisition module of the abrasion energy monitoring device of the gears, and the processed data output calculation result is output to the real-time monitoring and early warning device.
Before testing, spraying a speckle pattern on the surface of the gear pair to be tested, wherein the size of the speckle pattern is generally required to be 3-10 pixels, and the size of the speckle pattern is required to be consistent, so that the speckle pattern has good spatial resolution. During testing, the driving gear is driven by the driving motor and works in a rotating speed control state; the load gear is driven by the load motor and operates in a torque control state. In the gear meshing transmission process, torque and rotation speed of the driving gear and the load gear are respectively monitored in real time by using a torque and rotation speed sensor. The test procedure ensures that there is sufficient illumination at the gear wheel with the intensity provided by the illumination means in order to capture a clear displacement image. The high-precision camera is used for collecting the speckle images of the gears, the speckle images are input into a data acquisition module of a wear energy monitoring device of the gears together with torque rotation speed information collected by a torque rotation speed sensor, then the wear energy of the gear pair at each moment is calculated through operation processing and is input into a real-time monitoring and early warning device, and if the wear energy reaches a set gear fatigue threshold value, an alarm is immediately sent out, so that abnormal wear energy conditions can be found in early stages.
Example III
An embodiment of the present application provides an electronic device, including a memory and a processor, where the memory is configured to store a computer program, and the processor is configured to execute the computer program to cause the electronic device to execute the method for monitoring wear energy of a gear according to the first embodiment.
Alternatively, the electronic device may be a server.
Referring to fig. 4, fig. 4 is a schematic structural diagram of an electronic device according to an embodiment of the present application. The electronic device may include a processor 41, a communication interface 42, a memory 43, and at least one communication bus 44. Wherein the communication bus 44 is used to enable direct connection communication of these components. The communication interface 42 of the device in the embodiment of the present application is used for performing signaling or data communication with other node devices. The processor 41 may be an integrated circuit chip with signal processing capabilities.
The processor 41 may be a general-purpose processor including a central processing unit (Central Processing Unit, CPU), a network processor (Network Processor, NP), etc.; but may also be a Digital Signal Processor (DSP), application Specific Integrated Circuit (ASIC), an off-the-shelf programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware components. The disclosed methods, steps, and logic blocks in the embodiments of the present application may be implemented or performed. The general purpose processor may be a microprocessor or the processor 41 may be any conventional processor or the like.
The Memory 43 may be, but is not limited to, random access Memory (Random Access Memory, RAM), read Only Memory (ROM), programmable Read Only Memory (Programmable Read-Only Memory, PROM), erasable Read Only Memory (Erasable Programmable Read-Only Memory, EPROM), electrically erasable Read Only Memory (Electric Erasable Programmable Read-Only Memory, EEPROM), etc. The memory 43 has stored therein computer readable instructions which, when executed by the processor 41, enable the apparatus to perform the steps described above in relation to the embodiment of the method of fig. 1.
Optionally, the electronic device may further include a storage controller, an input-output unit. The memory 43, the memory controller, the processor 41, the peripheral interface, and the input/output unit are electrically connected directly or indirectly to each other to realize data transmission or interaction. For example, the components may be electrically coupled to each other via one or more communication buses 44. The processor 41 is arranged to execute executable modules stored in the memory 43, such as software functional modules or computer programs comprised by the device.
The input-output unit is used for providing the user with the creation task and creating the starting selectable period or the preset execution time for the task so as to realize the interaction between the user and the server. The input/output unit may be, but is not limited to, a mouse, a keyboard, and the like.
It will be appreciated that the configuration shown in fig. 4 is merely illustrative, and that the electronic device may also include more or fewer components than shown in fig. 4, or have a different configuration than shown in fig. 4. The components shown in fig. 4 may be implemented in hardware, software, or a combination thereof.
In addition, an embodiment of the present application further provides a computer readable storage medium storing a computer program, where the computer program when executed by a processor implements the method for monitoring the wear energy of the gear of the first embodiment.
The present application also provides a computer program product which, when run on a computer, causes the computer to perform the method described in the method embodiments.
In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other manners. The apparatus embodiments described above are merely illustrative, for example, of the flowcharts and block diagrams in the figures that illustrate the architecture, functionality, and operation of possible implementations of apparatus, methods and computer program products according to various embodiments of the present application. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based devices which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
In addition, functional modules in the embodiments of the present application may be integrated together to form a single part, or each module may exist alone, or two or more modules may be integrated to form a single part.
The functions, if implemented in the form of software functional modules and sold or used as a stand-alone product, may be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server, a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a usb disk, a removable hard disk, a ROM, a RAM, a magnetic disk, or an optical disk, etc.
The above description is only an example of the present application and is not intended to limit the scope of the present application, and various modifications and variations will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
The foregoing is merely illustrative of the present application, and the present application is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
Claims (7)
1. A method of monitoring wear energy of a gear, the method comprising:
acquiring discretization node data corresponding to discretization nodes of a gear meshing area;
obtaining the relative displacement of the discretization node of the gear meshing area in the z-axis direction and the relative displacement of the discretization node in the x-axis direction according to the discretization node data;
obtaining the abrasion energy of the discretization node in the z-axis direction according to the relative displacement in the z-axis direction;
obtaining the abrasion energy of the discretization node in the x-axis direction according to the relative displacement in the x-axis direction;
obtaining the abrasion energy of the gear according to the abrasion energy in the z-axis direction and the abrasion energy in the x-axis direction;
the step of obtaining the relative displacement of the discretization node of the gear meshing area in the z-axis direction and the relative displacement of the discretization node in the x-axis direction according to the discretization node data comprises the following steps:
the relative displacement of the discretized node in the z-axis direction is obtained according to the following formula:
the relative displacement of the discretized node in the x-axis direction is obtained according to the following formula:
wherein Δz i For the relative displacement of the discretized nodes in the z-axis direction,for discretization node A, the mode-shape coefficient in the z-axis direction, +.>For discretizing the mode-shape coefficient of node B in the z-axis direction, deltax i For the relative displacement of the discretized nodes in the x-axis direction,/or->For discretizing the mode shape coefficient of the node A in the x-axis direction,the vibration mode coefficient of the discretized node B in the x-axis direction;
a point A is arranged at a contact area on the driving gear at a certain moment, a point B is arranged at a position, opposite to the point A, of the contact area of the load gear, the point A and the point B are called an ith pair of discretized nodes, and the whole gear contact area can be divided into n pairs of discretized nodes;
the step of obtaining the abrasion energy of the discretized node in the z-axis direction according to the relative displacement in the z-axis direction comprises the following steps:
the stress of the discretized node in the z-axis direction is obtained according to the following formula:
the abrasion energy of the discretization node in the z-axis direction is obtained according to the stress of the discretization node in the z-axis direction, and the formula is as follows:
wherein E is i(z) For the abrasion energy of the discretized node in the z-axis direction, F i(z) For the force applied to the discretized node in the z-axis direction, k is the contact stiffness,for discretizing the displacement of node A in the z-axis direction, -/->Is the z-axis direction instantaneous velocity of discretized node A,/->For discretizing the displacement of node B in the z-axis direction, -/->The z-axis direction instantaneous speed of the discretized node B is a vibration period T;
the step of obtaining the abrasion energy of the discretized node in the x-axis direction according to the relative displacement in the x-axis direction comprises the following steps:
the stress of the discretization node in the x-axis direction is obtained according to the following formula:
the abrasion energy of the discretization node in the x-axis direction is obtained according to the stress of the discretization node in the x-axis direction, and the formula is as follows:
wherein E is i(x) For the abrasion energy of the discretized node in the x-axis direction, F i(x) For the force applied by the discretization node in the x-axis direction, k is the contact stiffness,for discretizing the displacement of node A in the x-axis direction,/->Is the x-axis direction instantaneous velocity of discretized node A,/->For discretizing the displacement of node B in the x-axis direction,/->Is the x-axis instantaneous velocity of the discretized node B.
2. The method of monitoring the wear energy of a gear according to claim 1, wherein the wear energy of the gear is obtained from the wear energy in the z-axis direction and the wear energy in the x-axis direction by the following formula:
wherein E is i(z) For the abrasion energy of the discretized node in the z-axis direction E i(x) For the abrasion energy of the discretization node in the x-axis direction, E is the abrasion energy of the gear, and the whole gear contact area can be divided into n pairs of discretization nodes.
3. The method for monitoring the wear energy of the gear according to claim 1, wherein the step of acquiring discretized node data corresponding to the discretized nodes of the gear meshing area includes:
acquiring node data corresponding to discretized nodes of the gear meshing area;
discretizing the node data to obtain discretized node data.
4. A device for monitoring the wear energy of a gear, the device comprising:
the data acquisition module is used for acquiring discretization node data corresponding to the discretization nodes of the gear meshing area;
the relative displacement obtaining module is used for obtaining the relative displacement of the discretization node of the gear meshing area in the z-axis direction and the relative displacement of the discretization node in the x-axis direction according to the discretization node data;
the abrasion energy obtaining module is used for obtaining abrasion energy of the discretization node in the z-axis direction according to the relative displacement in the z-axis direction; obtaining the abrasion energy of the discretization node in the x-axis direction according to the relative displacement in the x-axis direction; obtaining the abrasion energy of the gear according to the abrasion energy in the z-axis direction and the abrasion energy in the x-axis direction;
the relative displacement obtaining module is further configured to:
the relative displacement of the discretized node in the z-axis direction is obtained according to the following formula:
the relative displacement of the discretized node in the x-axis direction is obtained according to the following formula:
wherein Δz i For the relative displacement of the discretized nodes in the z-axis direction,for discretization node A, the mode-shape coefficient in the z-axis direction, +.>For discretizing the mode-shape coefficient of node B in the z-axis direction, deltax i For the relative displacement of the discretized nodes in the x-axis direction,/or->For discretizing the mode shape coefficient of the node A in the x-axis direction,the vibration mode coefficient of the discretized node B in the x-axis direction;
a point A is arranged at a contact area on the driving gear at a certain moment, a point B is arranged at a position, opposite to the point A, of the contact area of the load gear, the point A and the point B are called an ith pair of discretized nodes, and the whole gear contact area can be divided into n pairs of discretized nodes;
the wear energy harvesting module is further configured to:
the stress of the discretized node in the z-axis direction is obtained according to the following formula:
the abrasion energy of the discretization node in the z-axis direction is obtained according to the stress of the discretization node in the z-axis direction, and the formula is as follows:
wherein E is i(z) For the abrasion energy of the discretized node in the z-axis direction, F i(z) For the force applied to the discretized node in the z-axis direction, k is the contact stiffness,for discretizing the displacement of node A in the z-axis direction, -/->Is the z-axis direction instantaneous velocity of discretized node A,/->For discretizing the displacement of node B in the z-axis direction, -/->Is the z-axis direction of the discretized node BInstantaneous speed, one vibration period T;
the stress of the discretization node in the x-axis direction is obtained according to the following formula:
the abrasion energy of the discretization node in the x-axis direction is obtained according to the stress of the discretization node in the x-axis direction, and the formula is as follows:
wherein E is i(x) For the abrasion energy of the discretized node in the x-axis direction, F i(x) For the force applied by the discretization node in the x-axis direction, k is the contact stiffness,for discretizing the displacement of node A in the x-axis direction,/->Is the x-axis direction instantaneous velocity of discretized node A,/->For discretizing the displacement of node B in the x-axis direction,/->Is the x-axis instantaneous velocity of the discretized node B.
5. A system for monitoring wear energy of a gear, the system comprising:
the device comprises a driving motor, a load motor, a driving gear, a load gear, a high-precision camera, a torque and rotation speed sensor, a monitoring device of abrasion energy of the gear, a real-time monitoring and early warning device and a lighting device;
wherein, the monitoring device of the wearing and tearing energy of gear includes:
the data acquisition module is used for acquiring discretization node data corresponding to the discretization nodes of the gear meshing area;
the relative displacement obtaining module is used for obtaining the relative displacement of the discretization node of the gear meshing area in the z-axis direction and the relative displacement of the discretization node in the x-axis direction according to the discretization node data;
the z-axis abrasion energy obtaining module is used for obtaining abrasion energy of the discretization node in the z-axis direction according to the relative displacement of the z-axis direction;
the x-axis abrasion energy obtaining module is used for obtaining abrasion energy of the discretization node in the x-axis direction according to the relative displacement of the x-axis direction;
a wear energy obtaining module for obtaining wear energy of the gear according to the wear energy in the z-axis direction and the wear energy in the x-axis direction;
the relative displacement obtaining module is further configured to:
the relative displacement of the discretized node in the z-axis direction is obtained according to the following formula:
the relative displacement of the discretized node in the x-axis direction is obtained according to the following formula:
wherein Δz i For the relative displacement of the discretized nodes in the z-axis direction,for discretization node A, the mode-shape coefficient in the z-axis direction, +.>For discretizing the mode-shape coefficient of node B in the z-axis direction, deltax i For the relative displacement of the discretized nodes in the x-axis direction,/or->For discretizing the mode shape coefficient of the node A in the x-axis direction,the vibration mode coefficient of the discretized node B in the x-axis direction;
a point A is arranged at a contact area on the driving gear at a certain moment, a point B is arranged at a position, opposite to the point A, of the contact area of the load gear, the point A and the point B are called an ith pair of discretized nodes, and the whole gear contact area can be divided into n pairs of discretized nodes;
the z-axis wear energy harvesting module is further configured to:
the stress of the discretized node in the z-axis direction is obtained according to the following formula:
the abrasion energy of the discretization node in the z-axis direction is obtained according to the stress of the discretization node in the z-axis direction, and the formula is as follows:
wherein E is i(z) For the abrasion energy of the discretized node in the z-axis direction, F i(z) For the force applied to the discretized node in the z-axis direction, k is the contact stiffness,for discretizing the displacement of node A in the z-axis direction, -/->Is the z-axis direction instantaneous velocity of discretized node A,/->For discretizing the displacement of node B in the z-axis direction, -/->The z-axis direction instantaneous speed of the discretized node B is a vibration period T;
the x-axis wear energy acquisition module is further configured to:
the stress of the discretization node in the x-axis direction is obtained according to the following formula:
the abrasion energy of the discretization node in the x-axis direction is obtained according to the stress of the discretization node in the x-axis direction, and the formula is as follows:
wherein E is i(x) For the abrasion energy of the discretized node in the x-axis direction, F i(x) For the force applied by the discretization node in the x-axis direction, k is the contact stiffness,for discretizing the displacement of node A in the x-axis direction,/->Is the x-axis direction instantaneous velocity of discretized node A,/->For discretizing the displacement of node B in the x-axis direction,/->Is the x-axis instantaneous velocity of the discretized node B.
6. An electronic device comprising a memory for storing a computer program and a processor that runs the computer program to cause the electronic device to perform a method of monitoring the wear energy of a gear according to any one of claims 1 to 3.
7. A computer-readable storage medium, characterized in that it stores a computer program which, when executed by a processor, implements a method of monitoring the wear energy of a gear as claimed in any one of claims 1 to 3.
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