دورية
Identification on Nonlinear Friction Model and Tracking Control for a Ball-Screw Actuated Stage Using Modified Charge System Search
| العنوان: | Identification on Nonlinear Friction Model and Tracking Control for a Ball-Screw Actuated Stage Using Modified Charge System Search |
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| المؤلفون: | Lin, Chih Jer, Yu, Shen Kai, Ho, Bo Yen, Chen, Chin Sheng |
| المصدر: | Key Engineering Materials; August 2014, Vol. 625 Issue: 1 p423-429, 7p |
| مستخلص: | High precise positioning and high-speed performance are demanded for servo mechanical systems in recent industry. However, the nonlinear friction is a main factor to make the positioning mechanism imprecision. To improve the positioning the positioning precision of stages driven by ball-screws, there are two types of compensations including model and non-model based methods. In this study, the LuGre friction Model is applied to model the nonlinear friction behavior for a ball-screw driven stage. A Modified Charge Search System (MCSS) was proposed to identify the system’s parameter. After the system’s parameters are obtained, a feed-forward control integrated with a disturbance observer is proposed to eliminate the external disturbance and improve its tracking performance. |
| قاعدة البيانات: | Supplemental Index |
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