It is indicated that the result , based on the gb50017 code , is appropriate during the elastic integral stability range and is conservative excessively during the inelastic integral stability range , for homemade rolled h - section steel beam Gb50017计算轧制h型钢梁的整体稳定系数在弹性稳定范围是合适的，弹塑性稳定范围过于保守。
Integral stability capacity of rolled beam is more 10 % ~ 20 % than welded beam . at the same time , the inelastic integral stability capacity of wild rolled h - section ( hw ) steel beam is more superior observably than hn steel beam 弹塑性稳定范围，轧制梁比焊接梁大约多10 20的安全储备，且宽翼缘轧制h型钢的整体稳定性能高于窄翼缘轧制h型钢。
The integral stability capacity for homemade rolled h - section steel beam and the applicability of the design code ( gb50017 ) are analyzed entirely in the paper . it gives a chance to master and popularize homemade rolled h - section steel 本文对国产轧制h型钢的性能进行了大量的分析，评估了gb50017对国产轧制h型钢的适用性，为推广应用国产轧制h型钢创造条件。
But at present , the study on homemade h - section steel members are far from perfect . based on this status , the in - plane stability capacity for homemade rolled h - section steel columns under eccentric load is analyzed in this paper 然而国产热轧h型钢是进几年才出现的，对其力学性能的研究比较少，基于这样一个情况，本文着重就轧制h型钢偏心受压构件在弯矩作用平面内的稳定性能进行研究。
Taking account of the simplified torsion moment of inertia , integral stability coefficient increase relatively 5 % or 0 . 01 ~ 0 . 03 absolutely , only for narrow rolled h - section ( hn ) behind hn350 175 , whose calculation length goes beyond the limit of 8 meters Gb50017中扭转惯性矩的简化使规格大于hn350 175的hn型钢，在计算长度大于8米时，整体稳定系数偏高5 ，绝对偏大量在0 . 01 0 . 03范围。
Based on compensation control thought , through using neural network pid controller as compensation tache of traditional pid controller , a kind of hybrid pid controller is designed . combined with neural network , self - tuning control can realized better control over non - linear system . utilizing the advantages of fuzzy control and neural network control , a kind of neural network adaptive fuzzy controller based on fast bp algorithm is presented and it may control the plant on line . at last , the hybrid pid controller is applied in tension system of h - section continuous rolling mills and tension - free control is realized . the simulation results show that it has better performance than traditional pid controller . at the same time , it provides some reference for the control of other similar systems 在此基础上，基于补偿控制思想，利用神经pid对传统pid进行补偿，设计了一种混合pid控制器；神经网络与自校正控制的结合，使得自校正方法能对非线性系统实现比较理想的控制效果；利用模糊控制与神经网络控制各自的优点，提出了一种基于快速bp算法的神经网络自适应模糊控制器，能够对系统进行在线控制。最后将混合pid控制应用于h型钢连轧机张力系统中，实现微张力控制，仿真结果说明其较传统pid具有更好的性能，同时也为其它类似系统的控制提供一些参考。
