| 基于CPLD的运动控制系统硬件精插补的研究与实现 |
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| 引用本文： | 王芳,王琨琦.基于CPLD的运动控制系统硬件精插补的研究与实现[J].西安工业大学学报,2008,28(3). |
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| 作者姓名： | 王芳 王琨琦 |
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| 作者单位： | 西安工业大学机电工程学院 |
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| 摘 要： | 针对目前脉冲增量插补算法所得到的数控机床进给运动的精度和速度较低、而数字采样插补只适合于闭环控制系统的问题,提出一种采用高速数字信号处理器(Digital Signal Processor,DSP)实现数据采样软件粗插补,使用大规模可编程逻辑器件(Complex Programmab1e Logic Device,CPLD)实现数据采样硬件精插补.通过对CPLD硬件插补器工作原理分析,设计了数字微分器(Digital Differential Analyzer,DDA)插补算法控制器、方式控制器、四倍频鉴向控制器等关键器件.通过波形仿真分析证明该方法可应用于步进电机开环数控系统和脉冲式全数字交流伺服系统,对于提高系统的性能指标具有一定的实用价值.
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| 关 键 词： | 运动控制 硬件插补 大规模可编程逻辑器件 开环数控系统 交流饲服系统 |
Hardware Interpolation of Motion Control System Based on CPLD |
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| Authors: | WANG Fang WANG Kun-qi |
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| Abstract: | In order to solve the problem that pulse interpolation algorithm has low input increment and rapid feed velocity,the digital sampling interpolating is generally suitable for closed-loop servo system,a new realization method that rough interpolation is realized by DSP,and fine interpolation can be gained by CPLD electronic device.After analyzing the hardware structure of CPLD,DDA interpolation controller,output form controller,discriminator four multiple cymometer are designed and simulated.The scheme can be used in open-loop step motor and all-digital AC servo system.It is practical and can improve the performance of CNC system greatly. |
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| Keywords: | motion control system interpolation CPLD open-loop numeric control system AC servo system |
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