While promoting the development of the three loop roads of the tokyo megalopolis region by , for example , making a breakthrough in construction of the tokyo outer loop road that has been frozen for over 30 years , the metropolitan government is also pressing forward with the development of the arterial roads that form the city s framework , such as the ring roads of the ward area and the tama north - south road 例如，在促进东京都三环道路开发的同时，力争在已经停滞了近三十年东京外环路的建设上取得一个的突破，都政府也在加紧城市主干道路的开发工作。这些主干道路构成了城市的基本框架，诸如特别区内的环线和多摩的南北道路。
This thesis introduces the working principle , craftwork requirement , modeling process , control strategies and the realization of lf refining furnance bottom blowing argon control system . through the study and analysis of bottom blowing argon process control system , the thesis discusses the mean neural network model of controlled object and the mathematical models of the exectors , pwm adjustable pressure controller and pcm adjustable flux controller according to the relevant liquid knowledge and relevant data , including design data , test data and running data . to begin with the craftwork reguirement of bottom blowing argon and the actual instance of the control system , it presents the strategies of fuzzy parameters self - adaptive pid control used in pressure difference inner loop and fuzzy plus pi compound control used in flux outer loop which are based on the above modeling in order to carry out the accurate control of argon flux 本文介绍了lf精炼炉底吹氩过程控制系统的工作原理、工艺要求、建模过程、控制策略以及控制系统的实现。通过对精炼炉底吹氩过程控制系统进行研究与分析，并根据流体力学的有关知识以及有关数据(其中包括设计数据、试验数据和运行数据) ，建立起了被控对象的平均神经网络模型和执行机构(即pwm调压器和pcm调流器)的数学模型。在此模型的基础上，从底吹氩工艺要求和控制系统的实际情况出发，提出了压差内环模糊参数自适应pid控制策略和流量外环模糊pi复合控制策略，以实现氩气流量的精确控制。
In triangle plane filling between layers , the loop matching operator between layers was adopted , which is that the loops were matched according to their characters , geometry centers and perimeters . four kinds of regular algorithm in filling between layers were analyzed , and the shortest diagonal algorithm , which was rather fit to this dissertation , was adopted in this dissertation . the contour loops of section were grouped and each loop was split to make each loop become a single outer loop that was triangle split with delaunay algorithm 在层间三角面片填充方面,采用层间轮廓环按环的性质、几何中心和周长进行匹配的层间匹配算法;分析了层间三角面片填充的四种常用的算法,并根据本文需要选用并实现了最小对角线法;端面三角划分时,将端面的轮廓环进行分组,再对每组环进行切分处理,使得每组环变成一个单一的外环,对单一的外环按delaunay算法进行三角划分;将所生成的三角面片按规定的格式写入stl文件,生成可直接为快速原型制造所接受的stl文件格式。
The system selects switching surface according to the approach of variable structure control . based on the control rules to design the variable structure controllers , the inner loop and the outer loop form a complete vsc control loop . the control system has switching surface and the system brings sliding along fixed desired trajectories 根据滑模变结构控制方法选择切换面，根据控制律，设计变结构控制器，使内环和外环合成为一个vsc控制器，系统的控制有切换，而且在切换面上系统将会沿着固定的轨迹产生滑动运动。
Next , consulting current feedback control , the flux feedback control algorithm is designed . this algorithm has two loops , the inner loop is flux feedback loop , the outer one is air gap feedback loop ; the outer loop uses pid controller whose output is expected flux density , the inner uses the proportional or pi controller whose output is the magnet control voltage 其次,参照电流环控制的串级思想,设计出了基于磁通反馈的悬浮控制算法,该算法也采用双环控制,内环为磁通环,外环为位置环;外环采用pid控制器,输出为期望磁通密度,内环采用比例或比例积分控制器,输出为电磁铁控制电压。
