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摘要: 介绍了一种单矢量六自由度风洞天平校准系统的设计。采用砝码匀速运动过程中碰撞卸载的方法,实现对压电天平的瞬时加载;通过控制天平姿态以及砝码在加载头上的挂点位置实现单矢量加载;并采用多元校准方法对天平信号进行处理,满足超高速风洞测力试验对六分量压电天平校准的需求。校准系统主要由天平姿态调整机构、砝码加载机构、碰撞卸载机构以及控制系统、测量系统等部分组成。系统构造简单、系统误差源少,具有校准效率高,校准精度高等优点。Abstract: In this paper the design of a single vector six-component wind tunnel balance cali-bration system is introduced,which can calibrate piezoelectric balances by multi component cali-bration method adopting “unload”weight to accomplish instantaneous loading.The weight hits some rigidity object in movement by invariableness speed to accomplish unloading.And the weight can become a single vector load by adj usting the posture of the balance and hanging posi-tion in loading device.It can meet the need of super high-speed wind tunnel experiments.The structure of the system consists of balance posture adjustment equipment,weight loading equip-ment and unloading equipment by collision,and so on.The measurement system and control sys-tem are also expounded in the paper.Because of the simple structure and less error resources,the equipment has advantages of high efficiency and high calibration precision.
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