Simulation system model of independent power-supply based on reusable object-oriented technology

The research of Prognostic and Health Management (PHM) for Independent Power-supply System (IPSS) is an important step to ensure the safety for the complex system of moving devices. The simulation platform for IPSS is a powerful tool for these study works. In this paper, the structure and function of IPSS were analyzed first, and the weakness of existing simulation system were pointed out, then a development method based on the reusable object-oriented technology for IPSS simulation platform was presented. The simulation software model for IPSS was described by Use case Diagram, Class Diagram and Activity diagram of UML (Unified Modeling Language). And failure mode description was designed in class library of simulation model, which made it easy to develop simulation program integrating with modeling and fault simulating for different IPSS. With the proposed method, a simulation program for an aircraft power system was developed, which steady-state simulating and fault transient simulating had been realized. The validity of the developed system model is verified by the experimental results.

I. INTRODUCTION

Independent Power-supply System^[1]–[2] (IPSS) is a kind of completely independent power system which owns itself network and is separated from the industrial power network. The complex moving devices system such as airplanes, automobiles, warships, armored vehicles and so on, which cannot be connected with the industrial power network, must be equipped with IPSS. The supply quality, reliability, maintainability, testability and overall life-cycle cost of power system have now aroused much concern along with the growing increase in electrical devices, electronic control units and electric equipment. Further more, since Prognostics and Health Management^[3] (PHM) technology has gradually become an important part in the development of complex system, the study of PHM technology for complex moving devices system including its all subsystems are being carried out, while researches on PHM for IPSS are still at the fledgling stage. Hardware-in-the-Loop simulation (HILS) system of IPSS is a method of theoretical studies and verification, which requires a large amount of money and a longer construction time. Therefore, it is possible to develop simulation platform as an important means and a necessary supplement along with HILS system.