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考虑到系统稳定性,光电经纬仪跟踪伺服系统一般设计成I型系统。I型系统存在速度、加速度动态滞后误差。动态滞后误差的大小不但与跟踪系统有关,还与目标运动特性有关。在跟踪快速运动目标时,会因速度、加速度动态误差的增大,导致目标脱离视场,丢失目标。因此提高光电经纬仪跟踪快速运动目标的能力,一直是光电跟踪伺服系统努力的方向。本文给出了一种提高光电经纬仪跟踪快速运动目标的能力的方法:动态1+I控制法,并利用SIMULINK建立了跟踪伺服系统动态1+I控制法仿真模型。仿真结果表明动态1+I控制法是一种提高光电经纬仪跟踪快速运动目标能力的有效方法。
Taking into account the system stability, photoelectric theodolite tracking servo system is generally designed as a type I system. Type I system exists speed, acceleration dynamic lag error. The size of the dynamic lag error is not only related to the tracking system, but also related to the target motion characteristics. Tracking fast moving target, due to the speed, acceleration, dynamic error increases, resulting in the target from the field of view, the target is lost. Therefore, improving the ability of the theodolite to track fast moving targets has always been the direction of the optical tracking servo system. This paper presents a method to improve the ability of the theodolite to track fast moving targets: dynamic 1 + I control method, and uses SIMULINK to establish a dynamic 1 + I control simulation model of tracking servo system. The simulation results show that the dynamic 1 + I control method is an effective method to improve the ability of theodolite to track fast moving targets.