Artificial-neural-network adaptive control of compound actuator
-
摘要: 针对复合舵机的时变和非线性特性,提出了神经网络自校正控制方法.用改进的非线性自回归滑动平均模型(NARMA)对复合舵机进行动态建模,采用多层感知器神经网络辨识舵机非线性模型,由广义逆思想设计出控制器,并根据被控对象与辨识模型间误差在线调整网络权值,进而修正控制律,实现了复合舵机的自校正控制.仿真结果表明,在模型有时变及非线性因素的情况下,此方法仍能得到较好的控制效果.Abstract: To solve time-varying and nonlinear problem of the compound actuator ,the neural-network adaptive control principle was proposed. Establish the dynamic model of compound actuator using nonlinear auto-regressive moving average model, multi-layer perception neural network was used to identify the nonlinear model. The controller was based on the theory of generalized inverse and the network weights were deduced with respect to the error between the object and the identified model. The self-turning control was realized in combination with control-algorithm modify online. The simulation results show that this control scheme has good effect on the control of compound actuator under the model having time-varying and nonlinear character.
-
Key words:
- actuator /
- nonlinear /
- neural networks /
- system identification /
- self-turning control
-
[1] Krstic M, Kanellakopoulos I, Kokotovic P V. Nonlinear adaptive control design [M]. New York: Wiley, 1995 [2] Terry L.Aerodynamic shape optimization using a real-number-encoded genetic algorithm . AIAA 2001-2743, 2001 [3] 王占林.液压伺服控制[M].北京:北京航空航天大学出版社,1987:224-231 Wang Zhanlin. Hydraulic servo control[M]. Beijing: Beijing University of Aeronautics and Astronautics Press, 1987:224-231(in Chinese) [4] Narendra K S,Parthasarathy K. Identification and control of dynamical systems using neural networks[J]. IEEE Transactions on Neural Networks, 1997,8(3):475-485 [5] 李国勇.智能控制及其MATLAB实现[M].北京:电子工业出版社, 2005:79-82 Li Guoyong. Intelligent control and MATLAB realization[M]. Beijing:Publishing House of Electronics Industry ,2005:79-82 (in Chinese) [6] 威德罗 B,挖莱斯 E.著.自适应逆控制[M].刘树棠,韩崇昭译.西安:西安交通大学出版社,2000:48-146 Widrow B, Walach E. Adaptive inverse control[M]. Translated by Liu Shutang, Han Chongzhao. Xi’an: Xi’an Jiaotong University Press, 2000:48-146 (in Chinese)
点击查看大图
计量
- 文章访问数: 2762
- HTML全文浏览量: 121
- PDF下载量: 930
- 被引次数: 0