陀螺经纬仪自适应智能下放系统  

Adaptive Intelligent Lowering System of Gyroscope

作　　者：董桂梅[1] 林玉池[1] 冯莉[1] 齐永岳[1] 李贵永[1] 

机构地区：[1]天津大学精密测试技术及仪器国家重点实验室,天津300072

出　　处：《机械工程学报》2010年第6期77-82,共6页Journal of Mechanical Engineering

基　　金：天津大学博士点基金资助项目(20030056017)

摘　　要：自动下放系统一直是牵制陀螺经纬仪全自动化进程的关键环节。针对现有陀螺仪,提出基于旋转步进电动机驱动陀螺仪凸轮轴的自动下放方案,设计下放结构及总控制系统,分析影响陀螺下放摆幅的决定性因素,通过大量试验总结出下放摆幅在理想范围时半脱位置与光标初始位置的关系,基于此提出自适应智能运动控制系统,即根据光标初始位置与半脱位置的关系曲线建立下放速度方案数据库,对不同的光标初始位置自动查询相应的半脱位置设置电动机速度从而实现智能控制。通过对自动下放系统进行平稳性、下放摆幅及重复性对比试验,表明该系统有效可靠,实现陀螺在不同托起状态下均能下放在正常工作区域,且陀螺运行平稳,有效地解决自动下放限幅的瓶颈,显著地提高自动化程度和测量精度。Automatic lowering system is usually a significant process in the course of complete automation of gyroscope. In view of the current gyroscopes, an automatic lowering project is proposed based on camshaft under the control of rotary stepped motor, and the fixing structure is designed as well as the whole control system. By analyzing influence factors during the course of lowering, the relationship between initial condition of gyroscope and half-away position while lowering is obtained through a lot of experiments when the swing is within the ideal range. Based on this, the adaptive intelligent motion control system is proposed, i.e. a lowering speed scheme database is built on the basis of the relationship between the initial condition and half-away position. For different initial conditions, corresponding half-way positions are automatically inquired, then the motor speed is set, thereby realizing intelligent control. Through tests of stability, swing range and repeatability of the automatic lowering system, it is shown that the gyroscope is always in normal working range with different conditions and its running is stable, which proves that the control system is effective and reliable. By the project, the bottleneck of swing control in automatic lowering is solved effectively, the automation level and the measurement accuracy are improved significantly.

关 键 词：自动下放 陀螺经纬仪 自适应 半脱位置 

分 类 号：V241.5[航空宇航科学与技术—飞行器设计]