磨矿溢流浓度制策略研究.docVIP

磨矿溢流浓度控制策略研究 摘　要 随着自动控制技术的发展，控制领域的日益扩大，过程控制系统已从最初的单变量定长线性系统控制发展到对多变量时变系统的控制。对于象磨矿分级系统这种对象，因为本身具有的非线性，大惯性，纯滞后等许多不确定因素，我们采用PID控制器来进行控制。同时随着自动控制理论的发展，新的控制技术的出现，尤其是计算机工业的兴起和发展，使得包括磨矿分级作业自动控制系统在内的过程控制进入了计算机控制的时代。针对本课题设计的酒钢磨矿分级控制，该文以酒钢选矿厂改造项目为背景,延续前期的研究结果,采用智能控制策略,对磨矿分级作业过程控制进行深入地研究整体控制采用DCS集散控制方案论文中首先解决给矿系统中存在的非线性、时变和难于建模的问题;控制中,有效地克服磨矿分级作业系统中存在的大惯性、纯滞后难以控制的难点.该文还对用以上策略建立的控制器进行了全面的仿真PID控制  Intelligent Controlfor Overflow Density of milling Classification Operation System Abstract With rapid developing of automatic control technology, the control field is getting wider and wilder. Automatic control has made a lot of changes from single variety , linear , uncertainty system. Especially in industrial process, to control the process like milling classification operation System with no-liner, large inertial, time- delay, uncertainty and so on, we use PID control .Using this technology good controlling performance of non-liner and uncertainty system can be achieved. In the same time with the development of automatic control system and technology ,especially with the computer wide use. As a tool commuter has been used in milling classification operation system. On the ground of reformation project of Jiu Gang iron and steel mining factory and the earlier results,PID control strategy was adopted to study further for grinding and classification. And DCS(distributed control system) was applied. It can distribute the dangerous and functions, improve system and safety. In the paper, adaptive control strategy combining with PID control was produced to solve problem of nonlinear, time –variable and difficult modeling in ore supply system. The parameters of PID controller change correspondingly with system output. The simulation of PID controller, using above strategy, was also carried out fully, and the design bound and optimism value of the controller’s parameters were given. Keywords: Milling Classification Operation System, PID control, time-delay 目录 1 绪 论 1 2 球磨工