摘要
针对传统的跨声速风洞捕获轨迹系统机构堵塞度大、位置精度低的问题,提出一种新型的CTS机构。介绍CTS系统的组成及工作原理,然后对其机械系统进行了设计与分析。为了验证机构的合理性,分析机构的堵塞度和刚度,建立六自由度机构的运动学方程,并在此基础上建立机构的位置误差模型,最后基于蒙特卡洛法对其位置精度进行了分析。结果表明:该新型CTS机构的阻塞度、刚度和位置精度都满足设计要求,且优于原机构。
A new type of trajectory capture system ( CTS) mechanism was proposed for the traditional CTS with high blockage and low position accuracy in transonic wind tunnel. The composition and working principle of the CTS system were introduced, then its mechanical system was designed and analyzed. In order to verify the rationality of the mechanism, the blockage and stiffness of the mechanism were analyzed, and based on the 6-DOF kinematic equations, the position error model of the mechanism was established. Finally, the position error of the system was analyzed based on Monte-Carlo method. The analysis results show that the blockage, stiff-ness and position error of the new CTS mechanism meet the design requirements and are superior to the original mechanism.
作者
刘哲
尹猛
徐志刚
王军义
LIU Zhe;YIN Meng;XU Zhigang;WANG Junyi(Shenyang Institute of Automation, Chinese Academy of Sciences, Shenyang Liaoning 110179, China;College of Mechanical Engineering and Automation, Northeastern University, Shenyang Liaoning 110819, China;University of Chinese Academy of Sciences, Beijing 100049, China)
出处
《机床与液压》
北大核心
2019年第1期82-86,共5页
Machine Tool & Hydraulics
关键词
跨声速风洞
捕获轨迹系统
六自由度机构
运动学方程
位置误差分析
蒙特卡洛法
Transonic wind tunnel
Captive trajectory system
6-DOF mechanism
Kinematics equation
Position error analy-sis
Monte-carlo method
