CAJ | 학술논문

针对某型装备润滑系统、燃油系统、助推器等气密性检测要求，分析了常用气密性检测方法的特点，介绍了一种基于精密压力传感器的直压气密性检测技术方案，采用DPS8000精密压力传感器作为系统压力检测单元，内嵌了无油干式压力泵作为压力源，采用了STM32 F103 VE微控制器，提出了基于最小二乘法的气压泄漏率计算模型和温度补偿模型，扩展了设备温度适应范围，提高了检测准确度，实现了气密性自动检测，检测压力和保压时间数字设定，具有操作方便、显示直观、灵敏度高、便携性好的特点。
침대모형장비윤활계통、연유계통、조추기등기밀성검측요구，분석료상용기밀성검측방법적특점，개소료일충기우정밀압력전감기적직압기밀성검측기술방안，채용DPS8000정밀압력전감기작위계통압력검측단원，내감료무유간식압력빙작위압력원，채용료STM32 F103 VE미공제기，제출료기우최소이승법적기압설루솔계산모형화온도보상모형，확전료설비온도괄응범위，제고료검측준학도，실현료기밀성자동검측，검측압력화보압시간수자설정，구유조작방편、현시직관、령민도고、편휴성호적특점。
According to the demand of the equipment air-leakage test in lubricating system, fuel system and launch vehicle, the characteris-tic of leakage test methods is analyzed. The design of a direct-pressure test device based on the precision pressure transducer is introduced. It in-cludes a Model DPS8000 pressure sensor, an embedded oil-free compressor, four temperature sensors and an ARM micro-processor STM32F103VE. The air-leakage calculating model based on Least-Square-Line-Fit is adopted. The temperature compensating algorithm is provid-ed to improve the test performance. This test instrument can test a container’s air leakage automatically and is easy to use.