随着科技的进步,GPS在近几年来有了不错的发展,运用GPS三维动态的方式测量载体的姿态信息.GPS的姿态测量速度快而且精准度高,所以受到人们的广泛运用.在人们的不断的改良,寻找到一种合适的光纤来替代电缆,降低电缆的功耗,而且还能减少电磁的干扰,研制了一种光载GPS一机多天线的系统.在GPS三维姿态测量基本原理,载波相位差分测姿态等方面分析,进行研究.

为提高搭载于运动平台之光电跟踪系统控制回路的设计效率,以运动平台角扰动、目标运动特征以及系统跟踪误差指标为边界条件,基于系统建模和参数辨识,提出一种控制回路一体化设计方法,给出各环路控制器的解析表达及一组经验公式,并以某半实物仿真系统进行验证.在等效正弦125πsin(0.4πt) (mrad)角扰动环境下,对正弦输入200πsin(t)/3 (mrad)的跟踪误差峰值不大于0.5 mrad,满足均方误差小于0.5 mrad的指标要求,表明该控制回路一体化设计方法的有效性.

Active Disturbance Rejection Controller (ADRC) is used in the current loop of a miniaturized electro-optical stabilized system. In addition to current loop, the method uses an improved auto disturbances rejection. The method uses classical adjust elements series connected with non-linear feedback adjustment to design control system. The frequency response data of a miniaturized electro-optical stabilized system show that the method can be applied in engineering field and the method is more adaptive than classical ADRC.

在推导出光电跟踪仪扰动隔离度计算公式的基础上,给出了2种测试扰动隔离度的方法:基于模拟环境测试方案和载体平台测试方案。通过分析2种测试方案的试验数据,分别阐述了它们的优缺点和适用的场合,并指出速度环的带宽是影响双环路控制模式下系统隔离扰动能力的关键因素,最后提出了增加扰动隔离度的控制模式优化建议。

When transmitted through long cable,the output of PWM power amplifier may be distorted.The distorted wave may damage torque motor.By analyzing system at work,the factors caused distortion are found,and three solutions are presented.Experiment result shows that these solutions are valid.

Electro-optical tracking systems are widely used to make the real-time measurement of flying targets in test field due to their capabilities of tracking high speed targets precisely,as well as providing flight path data and flight attitude image in real time.A novel vehicle-borne electro-optical trajectory measurement system is presented.Rigid bearings were used to improve the stability of angular position output.Regenerative feedback technology was applied to suppress lagging error when a high-speed target was tracked.Measurement data with 20 ms update rate were normalized to rectangular coordinates to make data analysis conveniently.Besides,a simulated trajectory detection method to test system in the field is put forward.The system is flexible to be deployed and is able to measure trajectory of flying target promptly and precisely.The steady-state tracking accuracy can reach 0.21 mrad.

及时、迅速地对装备排除故障是提高其使用效率,延长使用寿命的主要手段.针对当今的抢修式维修方法不利于设备使用这一现状,本文提出了对装备实施预维修计划和建立维修数据库的方案,为延长设备使用寿命、提高装备性能打好基础.

Because of friction disturbance,jitter often happens when the table is working at low speed,which terribly influences the tracking precision.Taking the electro-optical rotation table as a plant,based on Lyapunov's law and adaptive control theory,an adaptive friction compensation method is designed to reduce the disturbances of the friction and improve the tracking performance.The simulation results demonstrate that the method can reduce jitter and provide the better stable tracking performance.