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用块脉冲函数法作辨识,必须保证零初始条件和零均值噪声。本文对这种方法作出了改进。这种改进的方法,能辨识任意初态下的辨识问题,适用于非零均值干扰噪声的场合,且在辨识过程中无须测量初始条件和噪声均值。它能被方便地用于在线辨识。仿真实验表明,这种方法具有很高的辨识精度。
Using the block pulse function method for identification, zero initial conditions and zero-mean noise must be guaranteed. This article made some improvements to this method. This improved method can identify any initial state identification problem and is suitable for non-zero mean interference noise. It is unnecessary to measure initial conditions and noise mean during the identification process. It can be conveniently used for online identification. Simulation results show that this method has a high recognition accuracy.