RV reducer service life prediction method based on digital twinning

Abstract

The invention discloses an RV reducer service life prediction method based on digital twinning. The RV reducer service life prediction method comprises the following steps of: (1) establishing a dataacquisition system, namely performing data acquisition on working conditions and environmental parameters of an RV reducer during actual working by using a sensor; (2) establishing an RV speed reducerdigital twinning model, namely establishing the RV speed reducer digital twinning model by establishing each sub-model of a digital twinning model, so as to ensure comprehensive analysis of real-timedata; (3) predicting the service life of the RV speed reducer, namely acquiring the predicted service life of the RV speed reducer by means of the sub-models through analog simulation; and (4) carrying out dynamic real-time monitoring and feedback, namely monitoring the actual operation condition of the RV speed reducer through real-time acquisition of data, and ensuring the prediction reliability of the twinning model. According to the RV reducer service life prediction method, a virtual simulation technology and an agent model are combined to research the use of the RV speed reducer, so that the service life of the RV speed reducer is quickly and accurately predicted, the test of a physical prototype is not needed, the research cost and time are saved, and the research efficiency is greatly improved.

Description

technical field [0001] The invention relates to the field of mechanical life prediction and the specific application field of digital twins. Background technique [0002] RV (Rotary Vector) transmission is a new type of transmission developed on the basis of cycloidal pinwheel transmission. The RV reducer is a precision reducer with high precision. Its structure is a two-stage crank type closed differential gear train. Widely used in CNC machine tools, aerospace, especially high-tech fields such as industrial robots, it has the advantages of small size, light weight, compact structure, large transmission ratio range, large carrying capacity, high motion precision, and high transmission efficiency. [0003] The service life is an important performance parameter of the RV reducer. The service life of the RV reducer is the most obvious and the largest gap between domestic and foreign countries. Taking the 40E reducer as an example, Nabostar can guarantee 5,000 or even 10,000 T...

AI Technical Summary

Problems solved by technology

[0011] It is found that the existing RV reducer prediction technology has a problem of separation between theory and reality. For the prediction of RV reducer life, method 1 does not take into account manufacturing errors, and does not analyze its service life in combination with actual RV reducer working conditions, only using theory The prediction results are obtained by simulating the parameters, and the accuracy of the prediction results is low; method 2 and method 3 only obtain the prediction results through on-site feedback or experimental data. Faced with many varieties of RV reducers, it takes a long time and consumes a lot of money, which cannot meet the actual production need

None of the above prediction methods integrate multi-source data well to obtain more accurate prediction data. The research on the service life prediction of RV reducer can be extended to the research on the fatigue life of RV reducer parts under the condition of cooperation. Through simulation The method solves the relevant life parameters, uses the model to predict, and obtains more accurate life prediction values ​​through real-time data update

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