This paper focuses on the used of software design patterns to assist in the design and development of distributed control software. In particular, the Model-View-Controller (MVC) framework is used to develop IEC 61499 function block applications. In order to test this approach, a simple example of a distributed control application is implemented on a Java-based embedded control platform.
Nowadays, object-oriented design is the trend of software design patterns, and the database connection pool is one of the important research topics. The paper firstly describes the basic principle of connection pool under traditional, tomcat and hibernate modes. Based on that, a new connection pool method is proposed, and these four methods are experimentally simulated in java language at last. The comparative analysis has verified that the presented connection pool owns the optimum access time and it can greatly improve the access efficiency of database.
A PATTERN-BASED APPROACH TO DISTRIBUTED CONTROL SYSTEM DESIGN
