中文说明：
卡尔曼滤波器的滤波性能。被控对象是二阶传递函数，采用M语言。该滤波器对控制干扰和测量噪声具有良好的滤波作用。
English Description：
Filtering performance of Kalman filter. The controlled object is a second-order transfer function, using M language. The filter has a good filtering effect on controlling interference and measuring noise