| 英文摘要 | In recent years, with the development of networked control systems (NCS), and the NCS research has developed from pure theoretical research to both theoretical and practical application research. This is the inevitable trend of development of networked control systems. Also, with the increasing wide use and progressing of the embedded system technology based on embedded micro-processors and embedded operating systems, high-speed network technology and advanced control methods, this provides an opportunity and new methods for the research and applications of NCS. In this dissertation, the main research work focuses on the research and design of an application platform of networked control systems, which is the NetCon9 networked intelligent controllers. Main work and contributions are described as follows. 1) Designed a higher performance networked controller—the NetCon9 networked intelligent controller based on an ARM9 microprocesor. Adopted a new structure、modular design methods and industrial standard. As the final executing unit of a system control algolithm, its’ performance has a direct effect on whole NCS’s performance. With the further research of NCS, the performance of the networked controller would also be improved. During the design of the NetCon9 networked intelligent controller, according to the architecture of the ARM microprocessor, a bus standard has been proposed, which is defined as a standard module structure for industry. It makes the NetCon9 networked intelligent controller have the characteristics of scalability and configuration. 2) Designed the software structure of the NetCon9 networked intelligent controller, including the operating system transplantation, various hardware drivers, NetCon system interface, etc. 3) Evaluated the performance of the NetCon9 networked intelligent controller, by means of practical control system experiments, including stability and reliability, compatibility between hardware modules, compatibility between hardware and software, processing capability, network communication performance, etc. 4) Designed the network communication modules for the NetCon system in terms of the request of different networked control systems, and several simulink modules for network communication. According to different network communication protocols, including two types of modules: TCP and UDP, and different data types, including modules: real (double), integral, char and the module for data package, all of module designs adopt the Simulink standard and then are packaged. So, they provide the NetCon system varioous network communication modules. |
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