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中文摘要：
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。
英文摘要：
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.
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