基于虚拟仪器的慢速烤燃系统的设计及应用

Design and Application of a Slow Cook-off System Based on Virtual Instrument

为了满足不敏感炸药的发展需求,在GJB 772A-1997及行业内标准烤燃装置的基础上,设计并开发了一套慢速烤燃系统。该系统基于LabVIEW程序的控制软件,由以控制器、数据采集卡、热电偶及数字I/O卡等为主的典型硬件构成。参照美军标MIL-STD-2105D和国内行业标准,对该系统的适用性开展了试验研究;采用RDX基与HMX基两种典型的混合炸药装药进行了慢速烤燃试验。结果表明,该慢速烤燃系统具有广泛的温度适用范围,试验数据拟合相关系数不低于0.999 8,在0.055、0.200、1.000、2.000℃/min和3.000℃/min等几种升温速率条件下,炸药均能实现较高精度的线性升温。与RDX基混合炸药相比,HMX基混合炸药响应程度有所缓和。该慢速烤燃系统满足试验需求,可为研究炸药的热不敏感性提供有效手段。

In order to meet the development demand of the insensitive explosives, a slow cook-off system was designed and fabricated based on GJB 772 A-1997 and industry standards. The system consisted of a control software developed by LabVIEW program and several typical hardware, including controller, data acquisition card, thermocouple, digital I/O card. According to US military standard MIL-STD-2105 D and the domestic industry standard, the applicability of the system was studied experimentally. RDX-based and HMX-based component explosives, two typical explosives, were tested by employing this system. Results showed that this system had a good feasibility in an extensive temperature range. Correlation coefficient of fitting test date could be up to 0.999 8. Specifically, this system presented high precision in a linear heating up process when the heating rates were 0.055, 0.200, 1.000, 2.000 ℃/min and 3.000 ℃/min respectively. Compared with RDX-based component explosive, the response of HMX-based component explosive is moderated. This slow cook-off system could satisfy the experimental requirements, which provided an effective mean for studying the thermal insensitivity of the component explosives.