引信并联定时器系统时间精度分析

Accuracy Analysis for Parallel Timer System of Fuze

对引信中n个定时器并联系统的定时精度进行了建模分析,推导出并联系统定时精度的表达式,并用蒙特卡罗法对具有一定失效概率的定时器并联系统进行了数值仿真及分布类型假设检验。引信定时器并联系统可以大幅度提高系统作用可靠性,但提高精度的程度却有限,2个定时器并联系统的精度只比单个定时器提高17.42%,而3个以上的定时器并联,却是并联的定时器越多,精度越低。3～6个定时器并联系统的精度比单个定时器分别提高了17.38%、14.32%、10.84%和7.52%。

The time accuracy of parallel system with n timers was analyzed by establishing mathematical model and its expression was deduced. The time accuracy of parallel system with certain invalidation probability was simulated and supposing tested on distributing type. The reliability of parallel timer system of fuze can be increased in a great extent, but the system＇s time accuracy was improved limitedly. The time accuracy of parallel system with two timers is 17.42% more than which with a single timer. Mention to the parallel system with more than three timers, the time accuracy become lower and lower with the increasing of number of timer. The time accuracy of parallel system with three to six timers has been increased 17.38%, 14.32%, 10.84% and 7.52%