调平误差对装填力的影响分析及仿真

在导弹装填过程中,装填装置的调平是其中的一个重要步骤,但在实际操作过程中调平结果必然存在误差,调平误差的存在可能对装填作业产生不利影响.通过对某种工况下装填过程中装填力的分析研究,推导出了装填力与调平误差间的数学关系.通过MSC/Adams软件进行装填过程的动力学仿真,可更简便的分析出调平误差对装填力的影响程度,同时对仿真结果的分析说明理论分析的数学关系可进行进一步的简化.理论分析与仿真均可为装填装置设计和使用过程中调平误差的限值确定提供依据.     

Method to generate training samples for neural network used in target recognition

Training neural network to recognize targets needs a lot of samples.People usually get these samples in a non-systematic way,which can miss or overemphasize some target information.To improve this situation,a new method based on virtual model and invariant moments was proposed to generate training samples.The method was composed of the following steps:use computer and simulation software to build target object’s virtual model and then simulate the environment,light condition,camera parameter,etc.;rotate the model by spin and nutation of inclination to get the image sequence by virtual camera;preprocess each image and transfer them into binary image;calculate the invariant moments for each image and get a vectors’ sequence.The vectors’ sequence which was proved to be complete became the training samples together with the target outputs.The simulated results showed that the proposed method could be used to recognize the real targets and improve the accuracy of target recognition effectively when the sampling interval was short enough and the circumstance simulation was close enough.     

基于载荷谱的输送带纵向撕裂监测方法探讨

在综合分析输送带撕裂监测保护研究现状和撕裂原因分析的基础上,提出一种根据电动机的载荷谱来进行输送带纵向撕裂监测的方法,论述了其检测原理,设计了监测系统、提出了撕裂阻力监测判据。分析计算表明该判据的显著性较强。     

六履带机器人结构参数与越障性能的关系

鉴于业界内对六履带机器人结构参数与越障性能之间的关系的研究以及机器人结构设计时理论依据的相对不足,力图从六履带机器人的结构特点和障碍特征着手,探索出六履带机器人对台阶、斜坡、沟道等典型障碍特征的越障性能。在此基础上,得出了机器人的越障性能与其自身结构参数及越障姿态间的内在关系,并通过理论分析和Matlab仿真求出六履带机器人最佳越障性能及对应的结构与位姿参数,为六履带机器人的结构优化设计以及越障时机器人的姿态控制提供了理论依据。