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A method and system for dynamic evaluation of gearbox life based on digital twin model

A dynamic evaluation and gearbox technology, applied in electrical digital data processing, special data processing applications, instruments, etc., can solve problems such as fatigue life research, achieve a wide range of applications, avoid prediction deviation, and improve efficiency.

Active Publication Date: 2021-04-23
浙江中自庆安新能源技术有限公司
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Problems solved by technology

Considering the economy of the test and the feasibility of the test cycle, we cannot directly study the fatigue life of the equipment from the original vibration

Method used

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  • A method and system for dynamic evaluation of gearbox life based on digital twin model
  • A method and system for dynamic evaluation of gearbox life based on digital twin model
  • A method and system for dynamic evaluation of gearbox life based on digital twin model

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Embodiment Construction

[0049] The present invention will be described in detail below in conjunction with the specific embodiments shown in the accompanying drawings, but these embodiments do not limit the present invention, those of ordinary skill in the art make structural, method, or functional changes based on these embodiments All are included in the scope of protection of the present invention.

[0050] Such as figure 1 In one embodiment of the present invention shown, the present invention provides a method for dynamically evaluating the life of a gearbox based on a digital twin model, the method comprising:

[0051] S1. Based on the number of teeth of each gear in the gearbox and the elastic coefficient and clearance of each gear pair, set the boundary conditions of the gearbox, construct the transmission model of each gear pair, and obtain each gear with Time-varying translational trajectory and rotational trajectory, the boundary conditions include the input speed and output load of the g...

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Abstract

The invention discloses a gear box life dynamic evaluation method based on a digital twin model. By constructing a transmission model of each gear pair in the gear box, the translation track and rotation track of each gear changing with time are obtained; the measured The motion amplitude and phase of the gearbox correct the elastic coefficient of each gear pair in the transmission model to obtain the corrected transmission model of each gear pair; input the obtained current input speed and output load of the gearbox to correct Based on the final transmission model, combined with finite element simulation analysis, the law of the stress of each position on each gear shaft changing with time in the first detection period is obtained; the residual stress of each position on each gear shaft is obtained according to the fatigue analysis formula. The number of breakages, the percentage of the remaining life of each position on each gear shaft after each test is obtained. The invention can dynamically evaluate the remaining life of the gearbox based on the computer aided technology.

Description

technical field [0001] The invention relates to the technical field of computer-aided optimization, in particular to a method and system for dynamically evaluating the life of a gearbox based on a digital twin model. Background technique [0002] Prognostics and health management (PHM) has been proved to be a feasible path in the fields of aerospace, civil aircraft, nuclear reactors, and automobiles. Through early warning of system failure for long-life and high-reliability components, it is convenient Perform condition-based maintenance on the system. The performance degradation process of a device depends on the running state of the device. For example, the running time of the device in different states and the switching times of the running state will have a great impact on the degradation trajectory of the device. And due to the randomness of the device's running tasks and running time, the stay time of the device in each running state is also random. In addition, even...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/23G06F119/04G06F119/14
CPCG06F30/23G06F2119/04G06F2119/14
Inventor 水沛尹旭晔马飞
Owner 浙江中自庆安新能源技术有限公司
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