频率辨识开环系统传递函数，传递函数为 ，试通过正弦扫频及Bode图拟合来辨识该传递函数，写出其设计思想和详细推导过程，并给出仿真程序和仿真结果-Open-loop frequency identification system transfer function, transfer function, the sine sweep test and the Bode plot by fitting to identify the transfer function, write its desi