改进的内模跟踪控制对随机噪声抑制的研究与仿真

对于存在随机噪声和干扰的系统,传统的内模跟踪控制是无法解决这类问题的。将自适应滤波器引入到内模控制的结构中,很好地解决了内模控制在抑制随机噪声方面的不足。针对被控对象的模型和系统性能指标,同时考虑到系统的随机噪声设计自适应滤波器,从而构建自适应控制器。通过自适应控制器和基于内模原理设计的伺服补偿器对被控对象进行跟踪控制。提出的方法综合了内模控制和自适应滤波的优点,使控制系统达到满意的跟踪控制效果,对常规谐波扰动和随机噪声都有良好的抑制作用。仿真结果表明提出的设计方法能够实现系统的无静差跟踪,并且具有良好的抗噪性和稳定性。

Improved Internal Model Tracking Control With Random Noise Suppression

The traditional model tracking control method is not suitable for the system within random noise and interference.This paper combines the adaptive filter with internal model control structure,and makes up this defect.Against the controlled object model and system performance,taking into account the random noise,design adaptive filter,and build adaptive con- troller.Through the adaptive controller and servo compensator based on internal model principle to control of the object. This method combines advantages of the internal model control and adaptive filtering, achieve a satisfactory control effect. It has a good inhibitory effect,as far as step disturbance and random noise disturbances are concerned.