摘要
为实现飞机阻力伞锁寿命试验的自动化检测与控制,针对产品的结构特点和寿命试验要求,设计了电液伺服加载装置模拟开伞载荷,利用特殊设计的作动机构实现锁的自动锁闭,采用基于OTSU全局阈值选取算法的图像分割及特征识别技术,进行产品锁闭状态的非接触式检测,以检测结果为驱动信号,实现了"挂载-锁闭-加载-卸载-开锁"的自动循环控制,多批次试验应用表明,系统工作稳定、可靠,显著提升了长周期寿命试验项目的工作效率和质量控制水平。
In order to realize the automatic test and control of the landing deceleration parachute lock life test for the aircraft.According to the structural characteristics and test requirements,an electro- hydraulic servo loading device is designed to simulate the opening loads of the landing deceleration parachute,The lock is automatically locked by the specially-designed actuator.By applying image visual technology based on OTSU global threshold selection arithmetic,a non-contact detection is carried out far the locking status of the lock,and with the checking result serving as driving signal,an auto circle control of ＂preloading-locking-loading-offloading-unlocking＂ is realized.The system is proved to be stable and reliable by batches of testing applications,which significantly improves the operation efficiency and QC level of the long period life test item.
出处
《计算机测量与控制》
2015年第7期2434-2437,共4页
Computer Measurement &Control
关键词
寿命试验
图像视觉
作动控制
阻力伞锁
life test
image visual
motion control
landing deceleration parachute lock
