A Ballistic Vertex Recognition Method Based on Triaxial Accelerometer

Abstract

The invention belongs to the field of fuze control, and in particular relates to a ballistic vertex identification method based on a triaxial accelerometer. The scheme includes a projectile and a fuze, the fuze is fixedly installed inside the projectile; the axis of the fuze coincides with the axis of the projectile; a PCB board is fixedly arranged on the fuze, and a power module, a three-axis accelerometer, CPLD and Peripheral circuits. This program uses two triaxial accelerometers installed inside the fuze of a certain type of mortar shell to measure the xy plane and z-axis acceleration values ​​of the projectile during ballistic flight, and judges the projectile through the "threshold + sequence + time window" algorithm Whether it is in the launch state and reaches the ballistic apex, thereby providing an environmental stimulus signal for the remote arming of the fuze. The invention adopts the accelerometer installed inside the fuze to judge the ballistic apex signal, thereby controlling the state of the safety switch, and has the advantages of not destroying the aerodynamic shape of the projectile body, requiring no additional force-to-electricity conversion structure, easy engineering, and high reliability.

Description

technical field [0001] The invention belongs to the field of fuze control, and in particular relates to a ballistic vertex identification method based on a triaxial accelerometer. Background technique [0002] According to the requirements of the national military standard GJB373A-97 and GJB6456-2008 for fuze design, the electronic safety and disarming device of the fuze requires two static switches and one dynamic switch as the detonation energy partition, and the environmental excitation signals for starting the safety switch must be independent of each other and obtained from different environments. Fuze electronic safety and arming devices are currently only used in high-value weapon systems such as missiles and torpedoes, and conventional ammunition such as mortar shells have yet to be popularized. [0003] Since the projectile fired by the mortar is a micro-rotating bomb, the environmental force of its fuze release is not only the recoil force, but the current design ...

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Problems solved by technology

[0003] Since the projectile fired by the mortar is a micro-rotating bomb, the environmental force of its fuze release is not only the recoil force, but the current design usually uses aerodynamic force, electric fuse, etc. Insufficient distance

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