基于VBA的可扩展专家控制系统的研究

针对传统专家控制系统存在的灵活性不够，不能允许用户自定义过程操作的不足，提出了一种新型的可扩展专家控制系统。该系统是在传统的专家控制系统的基础上，引入VBA技术，通过将过程对象定义为VBA对象模型，由用户对其进行触发操作的自定义，并可在操作中引入数值计算，以增强系统的数值计算能力，然后由主应用程序中的消息来触发执行这些方法。仿真实验表明，该专家控制系统的应用使得操作人员对过程的控制更加地灵活多变。

Research into the extensible expert control system based on VBA

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.