Study on an Assembly Prediction Method of RV Reducer Based on IGWO Algorithm and SVR Model

被引:7
作者
Jin, Shousong [1 ]
Cao, Mengyi [1 ]
Qian, Qiancheng [1 ]
Zhang, Guo [1 ]
Wang, Yaliang [1 ]
机构
[1] Zhejiang Univ Technol, Coll Mech Engn, Hangzhou 310023, Peoples R China
关键词
RV reducer; support vector regression; grey wolf optimization; OPTIMIZATION;
D O I
10.3390/s23010366
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
This paper proposes a new method for predicting rotation error based on improved grey wolf-optimized support vector regression (IGWO-SVR), because the existing rotation error research methods cannot meet the production beat and product quality requirements of enterprises, because of the disadvantages of its being time-consuming and having poor calculation accuracy. First, the grey wolf algorithm is improved based on the optimal Latin hypercube sampling initialization, nonlinear convergence factor, and dynamic weights to improve its accuracy in optimizing the parameters of the support vector regression (SVR) model. Then, the IGWO-SVR prediction model between the manufacturing error of critical parts and the rotation error is established with the RV-40E reducer as a case. The results show that the improved grey wolf algorithm shows better parameter optimization performance, and the IGWO-SVR method shows better prediction performance than the existing back propagation (BP) neural network and BP neural network optimized by the sparrow search algorithm rotation error prediction methods, as well as the SVR models optimized by particle swarm algorithm and grey wolf algorithm. The mean squared error of IGWO-SVR model is 0.026, the running time is 7.843 s, and the maximum relative error is 13.5%, which can meet the requirements of production beat and product quality. Therefore, the IGWO-SVR method can be well applied to the rotate vector (RV) reducer parts-matching model to improve product quality and reduce rework rate and cost.
引用
收藏
页数:22
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