EAST ICRF天线驱动结构改进设计

Improvement Design of Drive Structure for EAST ICRF Antenna

针对ICRF天线原有的驱动结构由于无自锁而导致天线移动过程中无法精确定位的缺点,给出了两种新的驱动结构设计方案,两种方案主要由步进电机和涡轮蜗杆减速器组成,均具有启动速度慢,推、拉力大,能精确定位的特点。在设计过程中,对两种驱动结构的启动转矩、丝杠的强度和稳定性进行了校核,通过理论计算分析,两种驱动结构设计均满足设计要求。整个驱动结构改进设计方案和方法可为其他同类装置提供有益的借鉴。

According to the original drive structure of ICRF antenna without accurate positioning during ICRF antenna moving for it has no function of self-lock,two types of new drive structure,which are mainly composed of stepper motor and reducer consisting of turbine and worm gear,were designed for ICRF antenna.They have the advantages of slow starting,big propulsive force and accurate positioning.The calculation together with theory analysis was carried out for the starting torque,the strength and the stability of the screw rods of two drive structures,and the results satisfy the design requirements.The new drive structures and analysis methods applied for this ICRF antenna will be good reference for the other same device.