某型车载显控设备支撑架试验件在试验中发生弯曲失效,基于NX软件高级仿真模块建立了有限元模型进行仿真分析.根据计算结果,找到支撑架的薄弱位置,并进行结构优化设计.优化后的结构经过有限元仿真计算,支撑架最大应力得到明显改善,符合设计要求.

光电系统瞄准线瞄准目标后,需根据工况以小于0.15 mil/s的角速率精确控制.但由于车辆快速移动时会存在摇摆、颠簸情况,导致系统瞄准线动态瞄准难.针对系统瞄准控制要求,分析了车载光电瞄准控制原理及数学模型,在此基础上提出了基于FPGA的车载光电瞄准控制非线性修正的实现方案,并设计了实用的修正电路,实现了瞄准过程控制.并在实际应用中得到验证,取得了较满意的效果.

In order to meet requirements of real-time using in all-weather,all-day,photoelectric detector systems are changed gradually from single function to multi-function and multi-sensors.Therefore,when the engineering design begins,the technical indicators of power supply needs be reasonable for fulfilling the systems and the maintenance,fault diagnosis and units exchange are easy to do.To resolve this problem,a scheme of power supply is proposed for photoelectric detection system based on the universal design principles which are described.The scheme introduces some methods,which include power supply hardware structure design,power control and power function extension design,as well as discusses engineering design implementation.Through real application,the results indicate that this plan can fulfill the missions of power supply for photoelectric detector systems.

为了研究要地防护系统的防护效能和性能,设计出一套基于要地防护的超近程分布式火控系统.针对光电、雷达和火力单元在要地分散布设防护的特点,设计了分布式火控系统的基本结构,提出分布式火控系统的主要研究内容及其关键技术,并对目标航迹预测进行了仿真试验,探索了由光电信息引导火力单元实施精确打击新技术途径,为未来要地防护的发展提供一定的理论参考.

In order to solve the dynamic sealing of the panoramic electro-optical aiming device, through analysis of three typical kinds sealing principle of the panoramic electro-optical aiming device, the influence of friction torque of dynamic sealing on structure and accuracy of stabilized platform was analyzed. Combining with application of engineering practice, three kinds of sealing corresponding to the friction torque analysis and estimation methods were given, in order to help the follow-stabilized platform system design. Experiments of three kinds of dynamic sealing were analyzed and calculated respectively. Results indicate that magnetic fluid is the better way to solve the problem of dynamic sealing of electro-optical devices.

Aiming at the problem of mechanical resonance in the mirror for 1/2 mechanical transmission process,put forward the mechanical resonant reduced or eliminated mechanical resonant method.Through the analysis of the reflector stable system control structure model,and deduced the transfer function and dynamic equation,combining the actual structure the reflector,analyzes mechanical resonant emergence mechanism,discussion on the resonance frequency and mechanical structure mirror stable servo system in a relationship,and taking certain type tank length mirror as example progress validate analysis.The results show that the system doesn't appear instability of the structure design of the phenomenon,should take reasonable design and the beginning of more advanced simulation,to suppress or eliminate mechanical resonant.

In order to overcome the flaw of hard control of manipulator with the simple linear output characteristic curve,it takes the method of modifying manipulator's output characteristic curve,which adopts the technique of memory function transformation.First introduces manipulator's output modifying scheme,then give a circuit design schematic of nonlinear correcting circuit.The application result shows that the technical index could be med and the design mission could be completed.