Model-Following Robust Adaptive Control Based on Neural Networks
-
摘要: 针对一类复杂非线性动力学系统,提出一种基于神经网络动态补偿的模型跟随非线 性鲁棒自适应控制策略.采用神经网络在线补偿控制器以克服系统的未建模动力学和非线性 耦合因素的影响,从而提高了模型跟随控制的动态性能和稳态精度;当系统存在模型不确定 性和外部扰动时,其输出仍能精确地跟踪期望参考模型的输出.同时给出了闭环误差系统鲁 棒稳定性的证明.应用示例表明,所提方法可保证闭环系统具有良好的跟踪性能和鲁棒性,且 算法简单,易于在线控制.Abstract: A novel model-following nonlinear adaptive robust control strategy with neural network dynamic compensation is presented for a class of complex nonlinear systems. A neural network is used as the compensator to eliminate unmodelled dynamics and nonlinear coupling effects. It improves dynamic performance and steady accuracy of the system; even if there exists disturbance, the output of the system can accurately track those of the reference model. Robust stability of the closed-loop system under this control law is proved by Lyapnov theory. Simulation results reveal that this method has good tracking performance and robustness. Further more, the control algorithm is very simple and efficient and easy for on-line control.
-
Key words:
- Self-adaptive control /
- neural networks /
- model-following /
- dynamic compensation /
- robust stability
计量
- 文章访问数: 2834
- HTML全文浏览量: 178
- PDF下载量: 1125
- 被引次数: 0