【作者】 戴旻；

【导师】 王宪；

【作者基本信息】 江南大学 ， 控制理论与控制工程， 2008， 硕士

【摘要】 动态称量广泛存在于工业生产中,定量控制系统是用来解决动态称量的系统,它具有高精度和高速度等特点。定量控制系统广泛的应用于建筑、饲料加工、食品加工、化工、冶金等行业,起到了提高生产效率和产品质量,降低成本等作用。论文从实际工程出发,对定量控制系统进行详尽的分析,并用ARM嵌入式系统构建了定量控制系统。论文首先对定量控制系统的控制对象进行阐述,并对控制算法的进行理论性探讨。详细的描述了控制对象的组成部分及其作用;从实际控制过程的角度分析了影响定量控制系统控制性能的关键问题;对控制对象建立数学模型,针对其数学模型进行控制算法的设计。在此基础上,根据系统性能和功能要求,运用嵌入式系统的知识对整个系统的软硬件进行设计。在硬件设计时,给出了芯片选型的理由和具体的电路图,并对设计难点进行了详细的分析;将嵌入式实时操作系统μC/OS-II引入软件设计中,给出了其在本系统硬件上的移植过程、驱动程序和应用程序的编写方法,着重介绍了图形用户界面MiniGUI在系统中的应用,并对系统实时性进行了实验以证明软件设计是成功的。最后,论文描述了本定量控制系统试验的过程,对试验结果进行了分析,证明定量控制系统的设计基本成功。更多还原

【Abstract】 Dynamic weighing occurs in industry comprehensively.Weighing control system is the system solving the dynamic weighing problem,and it is high speed and precision. Weighing control system is used comprehensively in architecture,feedstuff and foodstuff machining,chemical plant and so on,which are improved in produce efficiency,product quality and cost control by weighing control system.The paper analyse the weighing control system exhaustively and practically,then construct the weighing control system with ARM embeded system.The paper expound control object of weighing control system firstly,and probe into the control arithmetic.bewrite the parts of control object and function of each part;Analyse the key affect the system performance in practical control process;Modeling the control object and design the control arithmetic.Design the whole hardware and software system using embeded system .Illustrate the reason in selecting chip and show the circuit diagram. Then analyse the difficulty in design process;Use the Realtime Operate SystemμC/OS-II to design software,illustrate the process of how to port theμC/OS-II to the hardware ,and then compile the driver and application program.Use the graphical user interface MiniGUI in this software system.Last,check the program realtime and find the software design is successful.Last of all,this paper illustrate the process of weighing control system examination,the examination result indicate the design of weighing control system is successful.更多还原