文档介绍：摘要
激光加工技术自问世以来已经得到了长足、飞速的发展,而和激光加工息息相关
的运动控制技术已经成为提高激光加工品质的关键性技术之一。基于 DSP 和 FPGA 相结
合的运动控制系统具有控制精度高、实时性好、抗干扰能力强等特点,是目前控制系
统的主流。本文针对激光加工控制系统的特点,对应用于激光加工领域的控制系统进
行了深入的研究,并对其硬件系统进行了设计。通过对可编程逻辑器件 FPGA 利用软件
设计硬件的思想,实现了基于 DSP 和 FPGA 的激光加工控制系统。该系统利用 FPGA 实
现的精插补功能能够完成两轴的直线加、减速以及匀速运动,并达到了加工领域的要
求。本文所做的创新工作可概括如下:
(1) 分析和研究了数字信号处理器 DSP 和现场可编程逻辑器件 FPGA 的工作机理、
系统结构,并给出了基于 DSP 和 FPGA 的系统结构图。
(2) 分析并设计了主控制器 DSP 周围的诸如时钟、电源、JTAG 测试接口等硬件电
路,并对整个系统的抗干扰进行了分析;同时,给出了基于 DSP 的软件数据算法。
(3) 利用 FPGA 实现了频率范围在 100HZ 至 20KHZ、占空比在 0 到 100%的 PWM 输
出。
(4) 基于硬件描述语言和硬件开发环境在 FPGA 上实现了运动控制中的精插补的各
个模块功能单元,通过观察其输出特性验证了结果的正确性以及该系统在实际运用中
的可行性。
最后,对本课题的后续研究工作提出了一些看法和建议。
关键词: 激光加工运动控制数字信号处理现场可编程逻辑器件
I
ABSTRACT
Laser processing technology has been gained rapid and enough development as it’s
appeared so many years. And the tightly related technology of motion-control of it has been
e the key technology in this field. The motion-control system which based on digital
signal process(DSP) and field programming gate array(FPGA) has high control-precision,
good real-time and high interfere-resistance, and it’s popularly applied in control system
nowadays. This paper take the focus on the characteristic of laser processing system, and do
some deep research on the processing control system in this field, and also design the
hardware system. The idea of using software designing hardware by FPGA realizes this
system based on DSP and FPGA. This system can implement the precision interpolation
function and realize the ascending、descending and invariable motion in two axis. It can
achieve the request in this field. The main innovations of the dissertation are given below:
(1) Analyzing and studying the principle and the system structure of digital and signal
processor and field programming gate array, and also giving the system structure diagram of
them.
(2) Analyzing and realizing the clock circuit、power circuit and JTAG test interface
circuit