摘要
应用反推技术研究了一类带有未知滞后的随机非线性系统的自适应模糊控制问题。通过引入Nussbaum函数和辅助虚拟控制函数,解决了未知滞后问题;利用模糊逻辑系统来逼近未知的非线性函数;应用反推技术,提出了一种新的自适应控制方案。该方案保证了闭环系统的所有信号一致有界,并且跟踪误差收敛到原点的小邻域。
Adaptive fuzzy control problem for a class of stochastic nonlinear systems with unknown hysteresis is studied by using the backstepping technique.The unknown hysteresis problem is solved by introducing the Nussbaum function and the auxiliary virtual control function.The fuzzy logic system is used to approximate the unknown nonlinear function.A new adaptive control scheme is proposed by using the backstepping technique.The scheme ensures that all signals of the closed-loop system are uniformly bounded and the tracking error converges to any small neighborhood of the origin.
作者
缑延强
GOU Yanqiang(Department of Mechanical and Electronic Engineering, Shandong University of Science and Technology, Qingdao 266590, Chin)
出处
《济宁学院学报》
2018年第2期13-21,共9页
Journal of Jining University
基金
中国煤炭工业协会科技指导性计划项目(MTKJ 2012-344)
关键词
未知滞后
随机非线性系统
自适应模糊控制
unknown hysteresis
stochastic nonlinear system
adaptive fuzzy control
