实验流体力学
實驗流體力學
실험류체역학
JOURNAL OF EXPERIMENTS IN FLUID MECHANICS
2014年
1期
70-74
,共5页
湛华海%张旭%吕治国%于炜%王设希%褚卫华
湛華海%張旭%呂治國%于煒%王設希%褚衛華
담화해%장욱%려치국%우위%왕설희%저위화
天平校准%单矢量%六自由度%压电天平
天平校準%單矢量%六自由度%壓電天平
천평교준%단시량%륙자유도%압전천평
balance calibration%single vector%six-component%piezoelectric balance
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。
介紹瞭一種單矢量六自由度風洞天平校準繫統的設計。採用砝碼勻速運動過程中踫撞卸載的方法,實現對壓電天平的瞬時加載;通過控製天平姿態以及砝碼在加載頭上的掛點位置實現單矢量加載;併採用多元校準方法對天平信號進行處理,滿足超高速風洞測力試驗對六分量壓電天平校準的需求。校準繫統主要由天平姿態調整機構、砝碼加載機構、踫撞卸載機構以及控製繫統、測量繫統等部分組成。繫統構造簡單、繫統誤差源少,具有校準效率高,校準精度高等優點。
개소료일충단시량륙자유도풍동천평교준계통적설계。채용겁마균속운동과정중팽당사재적방법,실현대압전천평적순시가재;통과공제천평자태이급겁마재가재두상적괘점위치실현단시량가재;병채용다원교준방법대천평신호진행처리,만족초고속풍동측력시험대륙분량압전천평교준적수구。교준계통주요유천평자태조정궤구、겁마가재궤구、팽당사재궤구이급공제계통、측량계통등부분조성。계통구조간단、계통오차원소,구유교준효솔고,교준정도고등우점。
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.