Research on data communication method in periscope semi-physical training simulation system

Abstract

ABSTRACT Data communication plays a very important role in the hardware in the loop simulation system. The system architecture of periscope semi-physical simulation system is proposed at first. Then the data communication method based on FINS between PLC and PC is introduced, the user’s interaction of scene is achieved by PLC. The communication based on TCP between 2D chart console and scene simulation system is also introduced. The 6-DOF motion model and the scene simulation system is connected by TCP, and a DR method is introduced in solving the data amount problem. The test shows that the simulation system has no error package and no missing in a simulation circle. And can meet the requirements of training, also shows good performance in reliability and real-time. Keywords: Hardware in the Loop Simula tion, PLC, FINS, Communication 1. INTRODUCTION The submarine voyage training requires high cooperation between trainees and the traditional way of training on board has the disadvantages of high cost, high risk and has a long training period. Especially the training task such as tactical countermine and emergency hand ling which may cause dangerous situations cannot take place in the traditional training. With the development of system simulation and virtual reality, simulation training on shore and in the harbor becomes the main trend of su bmarine training mode. [1-3] Semi-physical simulation [4] is also called Hardware in the Loop Simulation (HILS for short), is a simulation method used part practicality in the simulation loop to replace the corresponding mathematical model. It connect the simulation computers together by communi cation to ensure the data synchronization of each node, and the simulation proceeding is a real-time process. The semi-physical cannot only provide the same handling feeling as the real equipments for the trainee and can also simulate the emergency situation to exercise the trainee’s reaction in such emergency situation. In the process of HILS, the system should incept dynamic import in the presented time cycle and bring out the dynamic output in real-time. Which means that the physical part must take over the info from the model calculation part in the given time cycle, and then send back the results to the model calculation module. If there is any delay in data communication, the simulation system may cause an error result. Furthermore, there is always a large amount of data communication in the simulation system, so the reliability is the other factor affects the system performance. This article firstly introduces the system architecture of periscope semi-physical simulation system. Then the data communication method based on FINS between PLC and PC is introduced, the user’s interaction of scene is achieved by PLC. The communication based on TCP between 2D chart console and scene simulation system is also introduced. The 6-DOF motion model and the scene simulation system is connected by TCP, and a DR method is introduced in solving the data amount problem. The test shows that the simulation system has no error package and no missing in a simulation circle. And can meet the requirements of training, also shows good performance in reliability and real-time.