Design and realize the electromotor choice expert system of sewing machine based on UML

The unified modeling language (UML), which is introduced in this paper, is an important technology about the developing method of object-oriented software. UML can make each component of the large complicated system visualize, then indicate and construct the system model, and build up various documents. This paper, which takes the electromotor choice expert system of sewing machine as an instance, describes how to design and realize the fact base and rule base in this expert system and how to carry out and spread this expert system with the Java program.