High-g Bistable Micro-acceleration Switch Fuze Safety System Research And Design,

The technology of Micro Electromechanical Systems(MEMS) highly boosts themicromation's development in the security system of fuze. The dissertation mainly doesresearch on the high-g bistable micro acceleration switch in the recoil safety structure infuze. The high-g bistable micro acceleration switch is designed after analyzing theperformance of the high-g two-double- girder micro acceleration switch.First, after analyzing the performance of the two-double- girder micro accelerationswitch in hydrodynamics,micro Mechanics of friction,the rigidity of the two-double-girder and the contacted part, it is deemed that the damp from liquid is almost ignored, butmicro Mechanics of friction and the rigidity of the two-double- girder and the contactedparts are important to the performance of the switch, which are consistent with test.Second, according to the analysis above, a parallel-beam bistable cosine switch whichis not rely on residual stress is chose for designing, and is expatiated in principle andtheory. The dimension of it is validated through theoretical calculation and finite elementsimulation; to prevent the stickiness of the microsize, some resolvent on structure andtechnics is put. The dynamic performance of it is validated through dynamic simulation, it is assured that it has high resonance frequency, and has favorable anti-impulsion andanti-libration, which will assure the switch's security and reliability.Professional software MEMS Pro is used to design the marks after accomplishing thedesign of the two-double-girder switch in structure. And then, some pivotal techniques isintroduced and the corresponding technologic process is also constituted.