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研究自抗扰控制方法中的扩张状态观测器(ESO).通过频域分析可得出该观测器性能随频率升高而逐渐衰减的结论,衰减程度取决于观测器的参数和系统的采样频率,并指出对现有的参数配置方法加以改进可以获得补偿性能更好的观测器.提出了一种非线性扩张状态观测器,在同等采样率条件下能够提高观测器的跟踪性能.仿真结果表明,所提出的状态观测器与现有的观测器相比,在主动控制中效果更好.
In this paper, we study the extended state observer (ESO) in the anti-jamming control method.From the frequency domain analysis, we can conclude that the performance of this observer decays gradually with increasing frequency. The degree of attenuation depends on the parameters of the observer and the sampling frequency of the system , And points out that the existing methods of parameter configuration can be improved to obtain better observer performance.A nonlinear extended state observer is proposed to improve the tracking performance under the same sampling rate.The simulation results show that , The proposed state observer is better than the existing observer in active control.