screw remaining life prediction based on quantum genetic algorithm and support vector machine
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ID: 232179
2017
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Abstract
To predict the remaining life of ball screw, a screw remaining life prediction method based on quantum genetic algorithm (QGA) and support vector machine (SVM) is proposed. A screw accelerated test bench is introduced. Accelerometers are installed to monitor the performance degradation of ball screw. Combined with wavelet packet decomposition and isometric mapping (Isomap), the sensitive feature vectors are obtained and stored in database. Meanwhile, the sensitive feature vectors are randomly chosen from the database and constitute training samples and testing samples. Then the optimal kernel function parameter and penalty factor of SVM are searched with the method of QGA. Finally, the training samples are used to train optimized SVM while testing samples are adopted to test the prediction accuracy of the trained SVM so the screw remaining life prediction model can be got. The experiment results show that the screw remaining life prediction model could effectively predict screw remaining life.
| Reference Key |
zhang2017shockscrew
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|---|---|
| Authors | ;Xiaochen Zhang;Dongxiang Jiang |
| Journal | Nano letters |
| Year | 2017 |
| DOI |
10.1155/2017/9581379
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| URL | |
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