水轮发电机组低频振动信号的测量  

Measurement of low frequency vibration signals of hydroelectric generating set

作　　者：陈战平[1] 

机构地区：[1]南京师范大学计算机科学与技术学院,江苏南京210098

出　　处：《传感器与微系统》2010年第12期118-120,共3页Transducer and Microsystem Technologies

摘　　要：通过系统辨识的方法建立振动速度传感器的幅频特性补偿器,用于实现水轮发电机组的低频振动速度测量。该方法以参考模型的幅频特性作为补偿后传感器的希望特性,以振动速度传感器的动态实验数据为输入基础,采用线性动态神经元(LDN)和误差白化的系统辨识方法得到补偿器的参数,以消除补偿器参数估计中的测量噪声影响。通过实验验证了该方法的有效性。The system identification method is used to establish the amplitude-frequency characteristic compensator of vibration velocity transducer for realizing low frequency vibration velocity measurement of a hydroelectric generating set. The amplitude-frequency characteristics of the reference model is used in this method as the ideal characteristics, according to measurement data of dynamic response of vibration velocity transducer, the parameter of the compensator is optimized by linear dynamic neuron（LDN） and error whitening criterion （EWC） for eliminating noise effect in the parameters estimation of compensator. Experimental results show that the approach is effective.

关 键 词：低频振动 振动速度传感器 幅频特性 补偿 

分 类 号：TP212.6[自动化与计算机技术—检测技术与自动化装置]