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在基于ＰＮＮ滤波故障检测与诊断方法的基础上，针对参数缓变这一故障类型，采用预置扰动方法，将滤波器的预期跟踪状况与实际跟踪状况相对照，对非线性系统的参数缓变故障进行检测
Based on the PNN filtering fault detection and diagnosis methods, aiming at the fault type of parameter slowdown, a pre-set disturbance method is adopted to compare the expected tracking condition of the filter with the actual tracking condition. The parameters of the nonlinear system are changed slowly Fault detection