Research On One Distributed Automatic Weighing And Batching System

This dissertation studies one distributed dynamic weighing and batching system. Firstly, the flowing of powdered material is studied. According to the results of theoretical analysis and the batching experiment, anti-arching material bin is designed. Then, mathematical model for dynamic weighing is established to analyze the error in dynamic weighing process. In order to improve the speed and accuracy of dynamic weighing, one three-grade weighing control method is proposed. Finally, according to the characteristics of the brake production, one distributed control system is established, including hardware structure and software designing. The main content of this dissertation is as below:The first chapter discusses the source and significance of this subject, summarizes the relevant technology and current research status, and finally gives the structure of this dissertation.The second chapter derives the stress equations of any point in the material bin, analyses the reason of arching, gives the free flowing condition for powder, and designs the structure of anti-arching material bin.The third chapter establishes the mathematical model for the dynamic weighing process, analyses the error in this process, and proposes one three-grade weighing control method to improve the speed and accuracy of dynamic weighing.The fourth chapter introduces the structure and production process of one brake weighing and batching system, proposes one distributed control system based on CAN bus, and gives the realization of hardware structure and designing of the software.The fifth chapter reviews the work of this dissertation, and gives the prospect of the future work.