A local fault diagnosing approach based on RBF neural networks is presented for the requirement of subsystem fault diagnosis of 3axis precision test turntable.First

the corresponding structure of the RBF neural networks is given

together with a modified learning algorithm based on recursive LSM.Then it is applied to the local fault diagnosing of turntable control subsystem.Fault diagnosing model based on RBF neural networks is built according to common faults and its characteristic information in control subsystem.Last

computer simulation results verify the effectiveness of this approach.