Design And Testing Of Fuze Safety System In The High Value Of G Micro-acceleration Switch

The miniaturization of the security system of fuze is the key technique and a handcap for the development of the small caliber ammunition, the adoption of MEMS technology can resolve this problem easily, which will bring significant influence on the development of fuze. Based on the MEMS security system, the dissertation does some reseaches of the high-g micro acceleration switch in the application of recoil safety structure mainly.One kind of micro acceleration swith is choosed to feel the circumstance-identify of the fuze launch firstly, which is applicable to the high shock and high heavy-loading environment. The key technology problem is analysed according to the requirements of micro acceleration switch. The structural dimension of three-level micro acceleration switch is desighed and validated through the theoretical calculation and finite element simulation, and ones which have significant effects on the device's performance are found.Professional sofeware MEMS Pro4.0 is used to design the marks after the structure is designed and optimized. To prevent the stickiness of the microsize, the reasonable height of anchor is deduced. Then the corresponding prcuction process is constituted. For the fabricated micro acceleration switch, we validate its close at the sechduled acceleration threshold, to imitate the relief safety circumstance of the recoil safety structure. The experiment shows that the micro acceleration switch reaches the anticipant requirements.