宏观量与分布量结合的环轧过程控制系统设计  

An Optimal Control System Design for Ring Rolling Processes with the Combination of Macro and Distributive Parameters

作　　者：解春雷[1] 李尚健[1] 郭正华[1] 黄树槐[1] 

机构地区：[1]华中理工大学

出　　处：《中国机械工程》1999年第6期611-613,共3页China Mechanical Engineering

基　　金：国家自然科学基金;塑性成形模拟及模具技术国家重点实验室开放课题

摘　　要：提出基于宏观量与分布量结合的最优环轧过程控制策略。采用刚粘塑性动力有限元模拟环轧动态过程，获得轧制过程中的分布量计算结果。结合环轧的运动关系和动力学方程等宏观量模型，确定最合理的轧制规程。提出环轧过程最优控制器的设计方法。该控制器可以使压力辊按要求的进给速率曲线运动，确保在最大环件直径增长率下获得无缺陷的成品。The important objective of this paper is to propose an optimal control strategy, based on macro-parameters in combination with the distribution parameters. First, the paper presents the simulation of ring rolling processes by rigid-viscoplastic dynamic finite element method and the H-RING code. The simulation can obtain the distribution parameters, including displacement, strain, stress, rolling force, torque and interface pressure. Second, the kinetics′ equations of ring rolling are given by kinematics. The macro-parameters can be calculated by the equations. At last, an optimum controller for ring rolling,which keeps the mandrel feed in desired rate, is designed. The ring-rolling plan to achieve a defect free ring on a mill can be offered by the strategy.

关 键 词：环轧 控制系统 宏观量 分布量 环件轧制 

分 类 号：TG334.9[金属学及工艺—金属压力加工] TP273.02[自动化与计算机技术—检测技术与自动化装置]