Presents a new sensor fault diagnoses method, the twice predictive diagnose method of control system sensor failure based on the radial basis functions networks, and makes an overall performance analysis based on a complex nonlinear system model. 文中提出了一种传感器故障诊断的新方法&基于径向基函数网络的两次预测诊断方法,在一复杂非线性系统模型的基础上对该方法进行了全面的性能分析。