一种新的模糊前向网络的研究

针对超声脉冲法在检测结构混凝土浇筑质量的应用中存在的一些问题，给出了一种具有６层结构的模糊前向网络，并探讨了与之相应的学习算法．实现了多参量综合评判；较好地引入了领域专家的经验知识来主动地指导网络的训练．实验结果证明了该网络的有效性

Study on Frequency Converter for Single Phase Induction Motors

The possibility of single phase condenser motor operating on frequency converter was discussed theoretically. The equation of voltage frequency of single phase condenser motor operating at symmetrical condition was introduced. Theoretical diagram of corresponding voltage type frequency converter was given. Output wave form of the frequency converter was analysed with vector method, and a new type PWM wave producing was method was introduced accordingly. The experiment shows that, in the given frequency range, the speed of the single phase motor is controllable, and the state of operation is fine.