无人机在农业方面的三位场景构建研究

箱子最优分配——有n个集装箱要装上1艘载重量分别为c的轮船，其中第i个集装箱的重量为wi。最优装载问题要求确定在装载体积不受限制的情况下，将尽可能多的集装箱装上轮船，并找出一种装载方案 输入(Box optimal allocation- there are n containers to be loaded on a ship load of c, respectively, where the i-th container weight wi. Required to determine the optimal loading problem in the case of unrestricted loading volume, as many containers loaded on ships, and to find a loading program input)

CCC会议LaTeX模板，发表CCC会议论文必备。(LaTeX template CCC meeting, conference papers published CCC necessary.)

已知：信号中心波长为2,天线阵元的间距为1米,快拍数为2000，空中有四个 源信号,假设它们的频率 四个源信号的方向分别为： 求： 1）在不加入噪声的情况下,观察并计算协方差矩阵特征值,并对它的特点 加以说明 2）分别采用MUSIC算法,CAPON算法, ESPRIT算法在下面四种情况下，对 上述四个信号源的波达方向进行估计,并画出它们的空间谱图； ①在不加入噪声的情况下, ②在加入高斯白噪声的情况下,假设信噪比为10dB 3）在信噪比变化范围为-20dB~+20dB时，分别采用MUSIC算法,CAPON算 法, ESPRIT算法，对上述四个信号源的波达方向进行估计,并画出波达方 向估计误差,随着信噪比变化的曲线图(即横轴为信噪比,纵轴为误差值)()

介绍了一种使用马赫-曾德调制器产生毫米波的ROF系统，有仿真验证结果。(Describes a use of Mach- Zehnder modulator generated millimeter wave ROF system, a simulation experiment.)

说明：  mimo雷达的实现原理及实现方法，适用于汽车雷达(Principle and implementation of MIMO)

cnc windows 中文翻译， 工程案例(cnc windows cnc windows)

华中科技大学毕业论文latex模板，可用于毕业设计，学士学位论文，博士论文(Huazhong University of Science Thesis latex templates for graduation, bachelor' s degree thesis, dissertation)

说明：  以齿轮箱的历史故障数据为依据,提出了齿轮故障诊断数据仓库的功能架构,并对数据的收 集、集成、存储等方面进行了研究,建立了齿轮故障诊断模型。为齿轮故障诊断提供了一种新的方法。 (The functional structure of datawarehouse of gear fault diagnosis is proposed based on gear fault date previously. Research on data collect, data integration, data storage is carried out. The diagnosis model of gear fault diagnosis is established. A newmethod of gear fault diagnosis is provided )

实用开关电源设计 实验电源 交流电源 直流电源(Practical switching power supply design experimental power AC power DC power supply)

为了更好地进行谐波和无功功率的补偿与控制，叶FBD(Fryze一Buchholz一DPenbrock)法的定 义进行了完善，并给出了补偿电流检测的直接法和间接法，在三相电力系统中对FBD间接法进行 了推广研究，利用参考电压进行投影变换，不仅可以检测出功率电流和零功率电流，还可以检测出 基波有功电流、基波无功电流、谐波电流以及任意次谐波电流等，大大拓展了FBD法的应用范围和领域。MATI一AB仿真和实验结果表明了所定义和推广的电流检测方法的正确性和有效性。 (In order to improve the performance of active power filter(APF) harmonic current detection method, a harmonic current detection based on FBD(Fryze-Buchholz-Dpenbrock) algorithm was proposed. Reference voltage was generated by phase locked loop(PLL), and load current was projected to reference voltage, and then the active power fundamental current, reactive power fundamental current, harmonic current, fundamental negative sequence current, any harmonic current and so on can be detected accurately by using low-pass filter(LPF), and in the case of distorted voltage, the method was also applicable. The simulation results verify the fast dynamic speed, high detection accuracy, simple implement and good project value of the proposed algorithm. MATLAB simulation results confirm the feasibility and validity of the method.)