【摘要】 结合了相关函数法和脉冲响应法两种经典系统辨识方法原理,在随机信号干扰的情况下,设计对系统实现实时辨识的仿真软件,获得系统的非参数模型。该仿真设计中,以M序列作为输入信号,白噪声信号作为干扰信号,进行了Matlab仿真实验,讨论了M序列的幅值,采样时间和周期长度对系统辨识效果的影响,以及分析M序列的选取方法来减少系统辨识误差。更多还原

【Abstract】 Real-Time System Identification based on the fusion of Correlation Method and Impulse Response Method is a useful way in automotive control field.Under the disturbance of random signal,the non-parametric model can be obtained by designing a simulate software.M sequence signal is used as the input and white noise signal is used as interference in this design.After the MATLAB simulation experiments,the influences of system identification caused by the amplitude,sampling time and period of M sequence are discussed.The way to choose M sequence so as to decrease the error is also analysed in this design.更多还原