Research On Hardware-in-the-loop Simulation System Of Space Vehicle

The future war is mainly about the air war,Space guided weapons become the preferred weapons for air warfare because of their advantages such as long range,high hit accuracy and good operational effectiveness.However,it has technical complexity,long development cycle,difficult to maintain,which leads to the high development cost.Therefore,the more efficient and economize hardware-in-the-loop simulation technology is widely used in the research of the aviation weapon system.This paper has developed s set of hardware-in-the-loop simulation system with high reliability and good efficiency in space attack and defense on the basis of the hardware-in-the-loop simulation technology.The main work of this paper includes:The first chapter introduces the research background and significance of this paper,research and analysis the research status of digital simulation technology and semi physical simulation technology at home and abroad,and introduces the principle of guided missile,lists the advantages and innovation of the comprehensive test and control platform.The second chapter combines the hardware-in-the-loop simulation technology with the actual needs of the project,start with the requirement analysis,and design the overall architecture of the system on the basis of the design principles which was proposed at the very beginning.In order to improve the fault-tolerant ability of the system and realize the fault isolation,this paper improved the traditional loop network networking mode on the basis of the bypass design idea.The hardware in the loop simulation system has high timing matching requirements for all the tested devices.This paper designed a soft interrupt synchronization mode on the basis of reflective memory network to ensure that the system clock synchronization accuracy meets the requirements.And lastly,the functional modules of each subsystem are decomposed and converted.The third chapter,this paper designs a LVDS video acquisition card with large capacity and caching ability to improve the speed of image acquisition in the process of simulation on the basis of high-speed image acquisition technology.The signal transfer unit is designed to realize multi-mode switching in the hardware-in-the-loop simulation test,and provide multiple reserved interfaces to facilitate the extension of the subsequent model function.In order to ensure the safety of the system,this paper also designs a special power supply and distribution unit to supply power to each simulation node and the tested products,and real-time monitoring.The fourth chapter designs the software architecture of the simulation system according to the layered thought,and the software function module is designed according to the principle of modular design.In this paper,the UML is used to draw the software data interaction sequence diagram,and the software UI is designed,and complete the related code.The fifth chapter introduces the prototype and environment of hardware-in-the-loop simulation system,and designs four models test combined with the needs and functions of the subjects.The system reliability evaluation method based on TOPSIS method is constructed,and the application verification of the system is applied.Through the analyzing the test results and verification of system reliability,the system can meet the demand in control accuracy and dynamic response performance,and has considerable superiority in the guidance weapon attack defense confrontation test,and the test result has high credibility.In this paper,the hardware-in-the-loop simulation system has high confidence,good combat effectiveness and multi-mode switching.Using the five axis turntable to combine the seeker and target simulator to control the attack and defense of guided weapons,and reproducing the attack and defense scenes with off-site data,which provides a verification method for the guidance system fault location,fault recovery and technical research.Through the semi-physical simulation test,the development cost and cycle of the guided weapon system are greatly reduced on the premise of meeting the demand of the military.