Electronic Safety And Initiation Control System Design Research

In order to meet the needs of modern and future wars,new principles and new technologies for ammunition emerge one after another.They prompt the fuze to further enhance the safety and reliability of use and develop rapidly toward smart,intelligent and miniaturized.Based on the trajectory correction grenade,the dissertation focuses on the research of trajectory correction fuze electronic safety and initiation control system.The main contents of the dissertation are as follows.According to the application background and functional requirements,the implementation of safing and fuzing were determined.Safety and initiation implementation of the integrated design method guides the design of specific hardware circuit.The electronic safety and initiation control logic have been designed.It has the advantage of whole trajectory safety.According to the launch condition of the trajectory correction projectile,the starting condition of the target-based arming has been determined.Finally,the overall design scheme of the system was proposed.Based on satellite positioning technology,target-based arming control was studied.The navigation positioning protocol of satellite positioning receiver was analyzed and a mathematical solution model of trajectory positioning was established to provide theoretical guidance for obtaining arming environment information.Aiming at the problem that the signal of navigation and navigation was prone to signal loss under the conditions of high overload and high-speed rotation of navigation fuze,the positioning information breakpoint replacement algorithm is designed.The hardware circuit in the fuze electronic safety and fuzing control system has been designed.The safety of the safety initiation actuator was improved by using the resistance capacity filter network and the combined instruction control.The mathematical model of the action process of the safety initiation actuator was set up,which provides the theoretical basis for the selection of the circuit parameters.To improve the reliability of the actuator,device and parameter selection were proposed.The designed circuit's size is 36mm in diameter and 4mm in thickness,and it meets the design requirements.In order to apply satellite positioning information to fuze safety and initiation control,the information needs to be processed quickly and complicatedly.Based on the software hierarchical design model,a software development platform of embedded real-time operating system ?C/OS-? is set up in STM32.Each function module was designed by C language.A series of tests were taken to evaluate the performances of the system hardware circuit and software algorithms.The hardware circuit tests show that arming operation is reliably.The planar microdetonator can be reliably ignited by initiation circuit.Initiation control circuit can achieve a variety of initiation control.The trajectory localization algorithm and the location information breakpoint supplement algorithm are validated in dynamic experiments.