相关辨识原理及其在转台中的应用

The Theory of Relevant Identification and its Application to the Turntable

－相关辨识法是利用相关函数的某些推导结果，从被测信号中提取某个指定周期信号幅值和相位信息的辨识方法。它类似于电子电路中的跟踪滤波器。在转台装配及使用过程中需要调节（减小）转动休的不平衡量，利用相关辨识原理可以准确地辨识转体不平衡量的大小及方向。这种方法可以应用在自动平衡系统中。

The relevant identification is an identification method that uses some deduced results from the relevant function to draw out the information of a certain peri-odic signals amplitude and phase from the measured signal. It is similar to a tracking fil-ter in electronic circuit.In the installment and operation of turntable , it is essential to obtainthe non-balanced value so as to adjust it, with the method of relevant identification,the amplitude and direction of the non-balanced value can be identified accurately. This method can also be applied to the auto-balanced systems.