基于多层前向网络的诊断模型在设备 故障诊断领域应用比较广泛。 但在多层前向网络的 设计和训练问题上, 单隐层的隐层单元数选取一直非常困难, 一般采用试凑 法, 既费时又 不一定保证收敛。-Diagnostic model based on multilayer feedforward networks in the field of equipment fault diagnosis used widely. But before multilayer design and training