lisp 边界的连接

Chapter 6-8 Chen Huaichen courseware

Fourth (1999) entitled the National Undergraduate Electronic Design Contest

说明：  快速生成横竖向构造线不需要繁琐输入“XH”“XV”即可生成相应构造线(Fast generation of horizontal and vertical construction lines does not need tedious input)

cad的lisp文件，pwx根据三点坐标生成抛物线，xyz收集点的坐标(cad lisp files generated, according to the coordinates of three parabolic)

主要论述了基于FPGA的末制导雷达伺服系统设计。结合末制导雷达讨论其电机控制、二阶伺服系统性能和PID校正算法,利用VHDL语言设计,实现基于FPGA的方位步进电机开环定位控制和俯仰直流电机闭环速度控制的伺服系统。结合实际应用中遇到的问题,提出了基于"反馈控制"理论的有效的补偿算法,该算法提高了伺服系统的稳定性、快速性和精度。(Mainly discusses the design of terminal guidance radar servo system based on Field Programmable Gates Array(FPGA).It includes the system’s electric machine control,second-order servo system performance and PID correction algorithm based on Virtual Hardware Description Language(VHDL) on azimuth stepping motor open loop positioning control and pitch direct current electric machine closed loop speed control of the FPGA servo system.In allusion to some factual problems during its application,presents corresponding effective solutions based on traditional control theory "Feedback Control".The fact proves that these methods can greatly improve the stability,speediness and precision of the original servo system.Additionally,a basic algorithm which can be realized in a terminal guidance radar servo system is given)

《AUTOCAD开发篇》曹颖著 基于lisp的CAD二次开发应用("AUTOCAD Development Chapter" written by Cao Ying)

lingo小程序，解决线性规划问题，希望对从事这方面的朋友有帮助。(lingo small program to solve linear programming problems, hope in this field to help a friend.)

cad中可以像cass一样划线,具有换向，隔点闭合等功能！(cad cass huaxian)

说明：  用于确将CAD图纸中的局部提出出来的CAD插件，非常好用。(The CAD plug-in, which is used to confirm the local presentation of the CAD drawing, is very easy to use.)

说明：  021 - ObjectDbx技术在当前图形中插入其它未打开的图形中的图块(021 - ObjectDbx Technology Inserts Blocks in Other Unopened Graphics in Current Graphics)