无人机航迹规划技术研究及发展趋势_胡中华

高速切削加工技术是一种先进的制造技术，具有强大的生命力和广阔的应 用前景，已成为切削加工的主流。数控插补技术是数控系统实现轨迹运动控制 的基础，插补运算是CNC系统软件实现运动控制的核心模块，插补算法的优劣 将直接影响到CNC系统的性能。因此，实现一种高精度和高速度的插补方法是 插补的关键所在。 本文在分析传统基准脉冲插补、数据采样插补的算法的基础上，着重研究 了三次NURBS曲线实时插补技术，针对部分算法的不完整或效率低，提出了 一种简单快捷的插补算法。采用NURBS曲线的矩阵表达式，将整个插补过程 分解为插补预处理和实时插补。在插补预处理中完成了大量的计算，预处理的 计算结果直接应用于实时插补，使插补算法满足了NURBS曲线插补的实时性 要求，再辅以必要的轮廓误差控制，实现了加工速度自适应于加工路径的 NURBS曲线直接插补。 本文讨论的插补算法采用C++语言实现，并在VC++6.0的编程环境中实现 了插补算法的计算机仿真，验证了算法的正确性和可行性。(The high speed cutting is one of advanced manufacture technique,which has the powerful vitality and the broad application,and already became the mainstream of machining.The interpolation technology of NC is the foundation of path s control in the CNC system,and the interpolation operation is the core module of CNC system software,which comes the motion control true.The interpolation algorithm,whose function is good or bad,directly influences the performance of CNC system.So,a kind of interpolation method with the high accuracy and high speed is the key of interpolation. Based on analyzing the traditional pulse interpolation and data sampling interpolation,this paper emphasizes on the NURBS curve real-time interpolation technology.In view of the partial algorithms which is incomplete and the low efficiency,this paper propose a simple and quick interpolation algorithm.Using the matrix representation of NURBS curve,the whole interpolation process is divided into appropriate pretreat)

window 7操作系统的系统服务项的详细介绍，想优化以下系统服务的可以看看(operating system window 7 A detailed description of services, would like to optimize the following system services can look at)

Dual PWM with 16f628a

本书介绍了线性系统和数字信号的基础知识，对学习数字信号处理很有帮助。(this book is about linear system and digital systems,which is helpful to people learning digital signal processing)

ADuC812的 AD驱动及滤波程序-ADuC812 AD-driven filtering and procedures

PFC 滑坡计算实例3D 数值模拟命令流(PFC landslide command flow calculation example 3 d numerical simulation)

jQuery经过图片高亮手风琴代码是一款鼠标悬停图片高亮显示，滑动展开手风琴效果代码。(JQuery through the picture highlighted accordion code is a mouse hover picture highlighted display, sliding to expand the accordion effect code.)

状态空间的预测控制.仿真里写的是一个二维的例子.(State-space predictive control. Simulation write a two-dimensional example.)

经典的俄罗斯方块程序，已经经过验证。对手机的支持广泛 -Tetris classic procedures have been verified. Supports a wide range of mobile phones

更多相关jquery标签导航标签淡隐淡现图片切：焦点图代码(More related jQuery tag navigation tags fade out the topic of image switching: focus map code)