基于两级下料和动态修正的配料称量控制模型  

Automatic Batch Weighing Control Model Based on Two Levels Dosing and Dynamic Correcting

作　　者：廖雪超[1] 刘振兴[2] 廖生伟 

机构地区：[1]武汉科技大学计算机科学与技术学院,湖北武汉430081 [2]武汉科技大学信息科学与工程学院,湖北武汉430081 [3]武钢热轧总厂中厚板分厂,湖北武汉430065

出　　处：《电气传动》2014年第6期58-62,共5页Electric Drive

基　　金：国家自然科学基金项目(61100055)

摘　　要：介绍了自动配料称量系统的工艺流程和系统结构,为了提高系统的生产速度和配料精度,设计了高/低速下料+点动下料的两级下料控制方式,并采用点动下料方式对低速下料进行误差精确补偿。针对物料在空中的"落差"不易控制,容易产生超差的问题,每次下料结束后,对两级下料模型和提前量采用迭代方式进行动态修正,并采用二阶预估器对目标值进行预估。既提高了下料速度,又保证了称量的精度。The process flow and system structure of automatic batch weighting system were presented. In order to increase production speed and dosing accuracy,designed the two-level dosing control mode（high/low speed dosing＋inching dosing）. Besides,the inching dosing mode was adopted to accurately compensate the weight deviation. In order to solve the problem that the fall of materials in-air cannot be easily controlled and out of tolerance. The two-level dosing control model and preact will correct after each dosing dynamically with iteration method,moreover,the target value is predicted with second-order prediction,so as to increase the dosing speed with high weighting accuracy.

关 键 词：自动配料称量 点动下料 动态修正 提前量 

分 类 号：TM921.5[电气工程—电力电子与电力传动]