Research into the extensible expert control system based on VBA
基于VBA的可扩展专家控制系统的研究

One of the key problems of traditional expert control system is that it is not flexible enough for users to define the process implementation on-line. To solve the problem, a new extensible expert control system was presented. It integrated VBA (Visual Basic for Application) with traditional expert control system. In the system, users can define the process object as VBA object model, and then define its fire operation in the integrated development environment supplied by VBA, while the implementation of the fire operation is usually fired by the message the process sends, so the process object's behavior can be changed with the condition. Furthermore, while defining the method, numerical computation can be imported to enhance the calculating performance. At last, the results of a simulation experiment show that this kind of control system will more flexibly control the process.