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| 1 | 基于双目视觉的车身焊点定位误差补偿研究显示文摘在应用机器人对车身点焊质量检测过程中,其焊点的定位精度受到点焊作业质量以及车身制造误差等因素的影响,导致实际焊点与设计值并不重合。针对传统示教无法对焊点定位进行实时补偿的问题,提出基于双目视觉引导机器人的焊点定位策略,并构建基于改进粒子群算法优化的支持向量机回归误差补偿模型,对定位结果进行补偿。在机器人末端安装双目传感器,利用双目定位原理对焊点进行初步定位,并将焊点位置的测量数据与实际数据作为学习样本,利用训练好的误差补偿模型预测系统定位误差,将补偿结果作为纠偏值引导机器人定位焊点。实验结果表明,补偿后的定位精度得到较大提升,验证了该方法的有效性。 | 朱文杰 凌鹤 杨守鹏 | 2021 | 应用光学2021，42，1： | 3 |
| 2 | Direction of arrival estimation method based on quantum electromagnetic field optimization in the impulse noise显示文摘In order to resolve direction finding problems in the impulse noise,a direction of arrival(DOA)estimation method is proposed.The proposed DOA estimation method can restrain the impulse noise by using infinite norm exponential kernel covariance matrix and obtain excellent performance via the maximumlikelihood(ML)algorithm.In order to obtain the global optimal solutions of this method,a quantum electromagnetic field optimization(QEFO)algorithm is designed.In view of the QEFO algorithm,the proposed method can resolve the difficulties of DOA estimation in the impulse noise.Comparing with some traditional DOA estimation methods,the proposed DOA estimation method shows high superiority and robustness for determining the DOA of independent and coherent sources,which has been verified via the Monte-Carlo experiments of different schemes,especially in the case of snapshot deficiency,low generalized signal to noise ratio(GSNR)and strong impulse noise.Beyond that,the Cramer-Rao bound(CRB)of angle estimation in the impulse noise and the proof of the convergence of the QEFO algorithm are provided in this paper. | DU Yanan GAO Hongyuan CHEN Menghan | 2021 | Journal of Systems Engineering and Electronics2021，32，3： | 1 |
| 3 | Design methodology of a mini-missile considering flight performance and guidance precision显示文摘The design of mini-missiles(MMs)presents several novel challenges.The stringent mission requirement to reach a target with a certain precision imposes a high guidance precision.The miniaturization of the size of MMs makes the design of the guidance,navigation,and control(GNC)have a larger-thanbefore impact on the main-body design(shape,motor,and layout design)and its design objective,i.e.,flight performance.Pursuing a trade-off between flight performance and guidance precision,all the relevant interactions have to be accounted for in the design of the main body and the GNC system.Herein,a multi-objective and multidisciplinary design optimization(MDO)is proposed.Disciplines pertinent to motor,aerodynamics,layout,trajectory,flight dynamics,control,and guidance are included in the proposed MDO framework.The optimization problem seeks to maximize the range and minimize the guidance error.The problem is solved by using the nondominated sorting genetic algorithm II.An optimum design that balances a longer range with a smaller guidance error is obtained.Finally,lessons learned about the design of the MM and insights into the trade-off between flight performance and guidance precision are given by comparing the optimum design to a design provided by the traditional approach. | ZHANG Licong GONG Chunlin SU Hua ANDREA Da Ronch | 2024 | Journal of Systems Engineering and Electronics2024，35，1： | 0 |
| 4 | 基于Simulink的导弹弹道轨迹及故障轨迹仿真显示文摘当前反导武器呈现出打击速度快、范围广、软毁伤效应为主等发展趋势,传统基于目标解体、轰燃的毁伤效果在线评估方法不再适用。为能够抗击导弹饱和打击,满足快速转停火决策需求,可利用大量正常、异常导弹运动轨迹数据训练武器系统自动决策软件,形成毁伤效果在线智能识别能力。为此,针对高空俯冲、掠海飞行、末端跃升俯冲等3种典型反舰导弹末段弹道模式,基于Simulink建立了导弹正常运动轨迹模型。同时,通过更改该模型参数设置将反导武器造成的导引头致盲、导引头输出错误、高度表异常等3种典型故障模式进行了数学抽象化。仿真试验表明,模型得到的导弹正常运动轨迹和3种故障下运动轨迹与实际情况相符,实现了毁伤效果在线识别需要的大量训练用轨迹数据快速低成本获得。 | 王慎 罗湘勇 肖玉杰 吴朝晖 | 2023 | 兵器装备工程学报2023，44，S02： | 0 |
| 5 | 基于地形遮蔽的自旋弹测高雷达回波建模与仿真显示文摘为解决导弹自旋运动模型复杂、建模计算量大的问题,建立了一种新的导弹自旋运动模型。在该运动模型的基础上,考虑了地形起伏对弹载测高雷达回波遮挡的影响,利用仿真地形,采用地形遮蔽算法,建立地形遮挡下的雷达回波模型,仿真得到不同高度下的雷达回波图和频谱图。通过对回波的分析、得到在高度为10km,雷达斜照射角度超过65.3°时,地形起伏对于雷达回波有显著遮蔽影响雷达回波发生频谱搬移等若干结论。该结论与实际情况一致,验证了模型的准确性,为后续弹载测高雷达回波模拟提供一定的理论支撑。 | 王安吉 曹菲 许剑锋 秦建强 薛春岭 | 2021 | 系统工程与电子技术2021，43，10： | 0 |
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