CAJ | 학술논문

为了保证光电跟踪设备载车平台的稳定精度，选用三点支撑方式和机械式支腿来支撑载车平台，设计了机械支腿的传动系统，选择逐高法作为调平方法，根据支腿所受负载的大小和步进电机矩频特性曲线，将调平过程分为3个阶段，然后选取合理的电机运行频率，确定支腿的伸缩速度，减少调平时间。调平精度实验测得此调平系统α、β角度方向上能实现的最小角度变化量分别为3．425×10－3″、13．538×10－3″，重复定位实验测定俯仰角的最大变化值为0．2″，方位角的最大变化值为0．4″，整个载车平台的调平时间为120 s左右。
위료보증광전근종설비재차평태적은정정도，선용삼점지탱방식화궤계식지퇴래지탱재차평태，설계료궤계지퇴적전동계통，선택축고법작위조평방법，근거지퇴소수부재적대소화보진전궤구빈특성곡선，장조평과정분위3개계단，연후선취합리적전궤운행빈솔，학정지퇴적신축속도，감소조평시간。조평정도실험측득차조평계통α、β각도방향상능실현적최소각도변화량분별위3．425×10－3″、13．538×10－3″，중복정위실험측정부앙각적최대변화치위0．2″，방위각적최대변화치위0．4″，정개재차평태적조평시간위120 s좌우。
In order to provide the stability accuracy for vehicle-born photoelectric tracking equipment, the approach of three mechanical legs is employed to support the vehicle.The entire transmission system of mechanical leg is de-signed and the approach of ascending mechanical legs is chosen as the leveling method .According to load acting upon leg and the stepping motor torque frequency characteristic curve, the leveling process is divided into three sta-ges and then the reasonable frequency is selected to determine the expansion rate of leg, which can reduce the time of leveling.Through the leveling accuracy experiment, the minimum angle variation of αand βangle direction can be achieved.They are respectively 3.425 ×10 -3″and 13.538 ×10 -3″.And an experiment is designed to examine the re-orientation accuracy practically.The experimental results show that the maximum variation of pitch angle is 0.2″while the maximum variation of azimuth angle is 0.4″, and the time of leveling is about 120 s.