
浏览全部资源
扫码关注微信
1. 山东大学 控制科学与工程学院 电子束研究所,山东 济南,250061
2. 泰山学院 物理系,山东 泰安,271021
收稿日期:2005-09-02,
修回日期:2005-10-16,
网络出版日期:2006-06-30,
纸质出版日期:2006-06-30
移动端阅览
魏 强, 张玉林, 于欣蕾, 等. 扫描隧道显微镜微位移工作台的 神经网络PID控制方法研究[J]. 光学精密工程, 2006,14(3):422-425.
WEI Qiang, ZHANG Yu-lin, YU Xin-lei, et al. Study on neural network PID control for micro-displacement stage of Scanning Tunneling Microscope[J]. Optics and precision engineering, 2006, 14(3): 422-425.
提出了一种基于神经网络理论的微位移工作台控制方案。该工作台以压电陶瓷作为微位移驱动元件
对伺服电机大位移进行位移补偿。分析了压电陶瓷微位移驱动器的原理
建立了工作台的数学模型。神经网络PID控制器对工作台进行闭环控制
利用BP网络的自学习和自适应能力
实时调整网络加权值
改变PID控制器的控制系数
减小工作台的位移误差。采用专用的压电陶瓷驱动电源对工作台的位移进行了实验
相对于常规PID控制器
微位移为11.41 μm时的响应时间从1.5 s缩短到1 s
稳态位移误差从3.13%减小到1.05%
工作台的稳定性和定位精度得以提高
改善了扫描隧道显微镜的工作性能。
A control scheme for micro-displacement stage of Scanning Tunneling Microscope(STM) based on the neural network was proposed
in which piezoelectric ceramics is used as the micro-displacement actuator of stage to compensate the rough displacement of the servo mechanism. The principle of the actuator was analyzed and the mathematical model was set up. With the stage controlled by the neural-network PID controller in close loop
the weights of BP network and the parameters of PID controller could be adjusted to reduce the displacement error of stage by the function of self-learning and adaptability in real time. Experiments of stage displacement using the special electronic ceramics power were conducted. The results show that the response time for a micro displacement of 11.41 μm is shortened from 1.5 s to 1 s
and the stable error is reduced from 3.13% to 1.05%. The stability and positioning precision are improved and the performance of Scanning Tunneling Microscope is enhanced compared with the traditional PID controller.
. 邹鹏程.量子力学[M]. 北京:高等教育出版社,2003. ZOU P CH. Quantum mechanics[M]. Beijing: Higher Education Press, 2003. (in Chinese)
. TERSOFF J,HAMANN D R. Theory of scanning tunneling microscopy[J]. Phys Rev B, 1985, 31(1): 805-813.
. 刘建芳,杨志刚,范尊强,等. 压电直线精密驱动器研究[J]. 光学 精密工程, 2005,13(1): 65-72. LIU J F , YANG ZH G , FAN Z Q ,et al. Precise PZT linear step actuator[J]. Optics and Precision Engineering, 2005, 13(1): 65-72. (in Chinese)
. 孟兆新,胡乃文. 三维精密定位工作台的控制系统研究[J]. 电机与控制学报, 2005, 9(2):148-150. MENG ZH X, HU N W. The study on control system of 3D precision positioning stage[J]. Electric Machines and Control, 2005, 9(2):148-150. (in Chinese)
. 孙宝玉,梁淑卿,韩连英,等. 压电式微定位工作台及其控制系统[J]. 微细加工技术,2003(4):65-68. SUN B Y ,LIANG SH Q ,HAN L Y, et al. Micro-positioning stage based on piezoelectric actuator and its controlling system[J]. Microfabrication Technology, 2003(4):65-68. (in Chinese)
. 白春礼.扫描隧道显微术及其应用[M]. 上海:上海科学技术出版社, 1992. BAI CH L. Scanning tunneling microscopy and its application[M]. Shanghai: Shanghai Scientific & Technical Publisher, 1992. (in Chinese)
. COMINOS P,MUNRO N. PID controllers: recent tuning methods and design to specification[J]. IEE Pro Control Theory Appl, 2002, 149 (1): 46-53.
. 陶永华.新型PID控制及其应用(第二版)[M]. 北京:机械工业出版社,2002. TAO Y H. New-style PID control and application(2nd Edition) [M]. Beijing: Mechanism Industry Press, 2002. (in Chinese)
. HUANG ZY,FEI R,HU ZH Q. A Smith online identification prediction control and its application in STM . Proceedings of 4th World Congress on Intelligent Control and Automation, Shanghai, Jun.10-14, 2002: 2254-2257.
. CHEN K S,RUMPER D L,SMITH S T. Design and control for an electromagnetically driven X-Y-θ stage[J]. Precision Engineering, 2002 (26): 355-369.
. 焦李成.神经网络系统理论[M]. 西安:西安电子科技大学出版社,1995. JIAO L CH. Theory of neural net systems[M]. Xi'an: Publishing House of Xidian University , 1995. (in Chinese)
. 胡寿松.自动控制原理[M]. 北京:国防工业出版社, 1994. HU SH S. Theory of automation control [M]. Beijing: National Defense Industry Press, 1994. (in Chinese)
. 孙立宁, 孙绍云, 曲东升,等. 基于PZT 的微驱动定位系统及控制方法的研究[J]. 光学 精密工程,2004,12(1): 55-59. SUN L N , SUN SH Y , QU D SH, et al. Micro-drive positioning system based on PZT and its control[J]. Optics and Precision Engineering, 2004,12(1): 55-59. (in Chinese)
. 方崇智, 萧德云. 过程辨识[M]. 北京:清华大学出版社,1988. FANG CH ZH, XIAO D Y. Process Identification[M]. Beijing: Tsinghua University Press ,1998. (in Chinese)
0
浏览量
337
下载量
7
CSCD
关联资源
相关文章
相关作者
相关机构
京公网安备11010802024621