基于SOPC的定量称重控制系统的设计与实现  

The Design and Implementation of a Weighting Control System Based on SOPC

作　　者：李兰英[1] 李丰旺[1] 

机构地区：[1]哈尔滨理工大学,黑龙江省哈尔滨150080

出　　处：《微计算机信息》2007年第35期142-144,共3页Control & Automation

摘　　要：针对全自动定量称重控制系统所要求的高精度、高可靠性、多功能等特性,给出了基于多Nios II嵌入式软核处理器的全自动定量称重控制系统的可编程片上系统(SOPC)软硬件设计方法。采用称重传感器、模数转换器AD7730、去极值平均滤波算法和预测控制算法,实现了颗粒、粉末状等物料的高精度测量及自动包装控制。该系统具有开发周期短、成本低、可靠性高、易于扩充等特点,现场测试结果表明,系统测量称重误差小于0.2%。For the needs of high accuracy, high reliability and muhifunction of a weighting control system, the software and hardware design methods of a SOPC based on multiple Nios II Embedded softcore CPUs are given. Weighing senor,A/D converter AD7730, the mean filter algorithm which can remove extreme values and the predictive control algorithm are used to implement the high pre- cision measurement and the automatic pack control of the pulverized material. The system has the advantages of low cost, high stabil- ity, short development period and good extensibility and so on. The field test result indicates that the weighting error of the system is less than 0.2%.

关 键 词：SOPC NiosⅡ软核处理器 FPGA AD7730 动态称重 

分 类 号：TM274.5[一般工业技术—材料科学与工程]