| GMA再生型颤振系统的稳定性及其控制简 |
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| 引用本文： | 李东,李莹. GMA再生型颤振系统的稳定性及其控制简[J]. 中国科技论文在线, 2014, 0(2): 192-195,206 |
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| 作者姓名： | 李东 李莹 |
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| 作者单位： | [1]东北大学理学院,沈阳110004 [2]安徽理工大学电气与信息工程学院,安徽淮南232001 |
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| 基金项目： | 国家自然科学基金资助项目（11304033）;高等学校博士学科点专项科研基金资助项目（20120042120031）;中央高校基本科研业务费资助项目（N120305001） |
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| 摘 要： | 综合考虑再生型颤振对工件及超磁致伸缩微致动器的影响，建立了超磁致伸缩微致动器车削颤振系统非线性动力学模型。根据Lyapunov第一次近似稳定性定理及霍尔维茨判据对其进行了稳定性分析及控制研究，讨论了系统参数对GMA颤振系统稳定性的影响。同时采用简单自适应控制方法对颤振系统进行了控制研究。结果表明：车削的极限宽度、工件的质量及其等效刚度对系统的稳定性有明显的影响；简单自适应控制方法可有效抑制再生型颤振对系统稳定性的影响。
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| 关 键 词： | 超磁致伸缩微致动器 加工颤振 稳定性 自适应控制系统 |
Stability and control of GMA regenerative chatter system |
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| Li Dong,Li Ying. Stability and control of GMA regenerative chatter system[J]. Sciencepaper Online, 2014, 0(2): 192-195,206 |
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| Authors: | Li Dong Li Ying |
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| Affiliation: | 1. School of Sciences, Northeastern University, Shenyang 110004, China;2. School of Electrical and Information Engineering, Anhui University of Science and Technology, Huainan, Anhui 232001, China) |
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| Abstract: | Considering the effects of regenerative cutting chatter on both workpiece and GMA,the nonlinear system dynamics model composed by GMA,turning tools and workpiece was built.According to the Lyapunov first theory and Hurwitz criterion, the effects of system parameters on stability of GMA chatter system were explored.Then,the effects of chatter were controlled by using the simple adaptive control method.The results show that turning width,equivalent rigidity and quality of workpiece have obvious effects on the stability of the system,and the simple adaptive control method can effectively suppress the effects of regenerative chatter on the system stability. |
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| Keywords: | giant magnetostrictive actuators （GMA） machining chatter stability adaptive control system |
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