FPGA在运动控制系统中的应用.pdf

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2005 年第 1 期·控制与检测·
文章编号:1001 - 2265(2005) 01 - 0063 - 02
FPGA 在运动控制系统中的应用
杨雷1 , 但永平2
(1 东莞理工学院, 广东东莞 523106 ; 2 郑州大学物理工程学院, 郑州 450052)
摘要:在我们研制的激光微加工闭环控制系统中,光栅尺作为位置传感器,其分辨率决定控制系统的精度。由于光栅尺分
辨率为 4μm 很难满足系统的要求,因此设计了基于 FPGA 光栅尺处理电路,实现了四细分、辨向和可逆计数,使分辨率达到
1μm ,提高了运动控制系统的精度。
关键词:四倍频细分; 辨向; EDA ; FPGA; 控制系统
中图分类号:TG806 文献标识码:A
FPGA Applies in The System of Motion Control
YANGLei1 , DAN Yong ping2
(1. Dongguan University of technology , Guangdong Dongguan 523106 , China ; 2. School of physical Science &
Techndogy , Zhengzhou University , Zhengzhou 450052 , China) )
Abstract : A grating scale acts as the position sensor in a self - developed laser micro - processing system , a closed loop movement control
system , and the resolving power of the grating scale limits the control accuracy of this system. Since the grating scale resolving power is
4μm which is insufficient in this system , a grating scale signal processing circuit based on FPGA is applied in this system to improve the
grating scale resolving power and the control accuracy of this system. The circuit plishes functions of four - fold subdivision , discern
ing direction and counter with 1μm grating scale distinguish ability.
Key words : fourfold - frequency and subdivide ; direction - judgment ; EDA ; FPGA,control system
复位电路 WDT、存储电路 NOVRAM、通信电平转换接口
运动控制系统的组成
1 MAX202、电机驱