基于等效系统的动态称重数据处理

Dynamic Weighing Data Processing Based on Equivalent System

动态称重技术是目前产品定量包装领域十分关心的问题,如何提高称重的精度和速度是动态称重的难题之一。基于定量包装的动态组合秤实验数据,采用等效系统的方法对动态称重数据进行处理,提出了基于非线性系统辨识的滤波方法,并设计适合动态称重数据的尺度函数对快速性和稳定性进行评估。结果表明,该方法较之传统的平滑数据滤波方法,有效提高了测量的快速性。

The technology of dynamic weighing is of great concern in the field of products quantitative packa- ging, but how to improve the weighing accuracy and speed is a puzzle in this field. A new filtering method based on nonlinear system identification is proposed, and the equivalent system method is applied to process dynamic weighting data, based on the experimental data of combined scales for quantitative packaging. A fitness function is also designed to evaluate the quickness and the stability for this dynamic weighing data. Comparing with the moving average filtering, the results show that the new method improves the quickness effectively.