error law meaning in English

误差律

Aiming at the study actuality of fan performance monitoring system and analysis of fan performance curve changes affected by inlet - box and the different fixed - angles of guide blades in the course of installation , a fan flow monitoring model based on rbfnn in whole flow zone was established in this thesis . in the model , the method of no throttle and fan performance curve were used as basis . and on the basis of that model , fan performance curves of 4 - 73no . 8d were approached with experimental data of different speed , different opening - angles of guide blade and different resistance of pipeline , the precision and the error law of model were studied
本文针对电站风机性能监测系统研究较少的现状，在实验的基础上分析了现场加装进气箱和由于安装造成的导流器叶片开度不一致对风机性能曲线的影响，并在此基础上采用无节流方法测量流量，以风机调节性能曲线为依据，建立了基于径向基函数( rbf )神经网络的风机流量全程监测模型；以实验室4 - 73no . 8d离心风机为研究对象，探讨了rbf神经网络差压模型在变转速、变导流器开度和变管网阻力等工况下的应用精度和误差分布规律；最后用visualc + +语言开发了风机性能在线监测系统。