This paper discusses the technology of reasoning based on case of coupling neural network,the typical implemetation framework of reasoning based on case,the cases indexing modelbased on obligatory object and the three levels organization of example.

So,a new approach for the knowledge representation of product family model based on constrained object is proposed.

The paper gives a knowledge representation model of switch operation on high-level concept, and then proposes a simulation technique of switch operation based on satisfaction of constrained object state mapping and equipment restraint rules.

Based on the application characteristics, the definition, conception, set, and the restraints of the objects on UCard are presented, and the object restriction chart is given.

In order to guarantee the validity of organization,object constraint language(OCL) is used to formally describe the three classes of organizational constraints include basic constraints,team.

According to it, the organization structure is modeling based on object-oriented technology, and the constraints within the team structure and team-to-task are formally expressed by object constraint language (OCL).

Object Constraint Language (OCL) is the sub-standard of UML, which can be used not only in constraint and query on models, but also in defining transformation rules and modeling language.