| 数控进给伺服系统的预见前馈补偿控制研究 |
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| 引用本文： | 聂建华,李晟,李洋.数控进给伺服系统的预见前馈补偿控制研究[J].组合机床与自动化加工技术,2007(7):61-64. |
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| 作者姓名： | 聂建华 李晟 李洋 |
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| 作者单位： | 1. 安徽工业大学,省高校电力电子与运动控制重点实验室,安徽,243000
2. 马钢自动化工程公司,安徽,马鞍山,243000 |
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| 摘 要： | 论文针对数控进给伺服系统跟踪轨迹事先已知的特点，在常规反馈控制结构基础上引入预见前馈补偿控制；通过增加扩展误差系统状态变量方法，将P—PI串级进给伺服系统控制变换为状态反馈，运用偏微分最优化法求解预见前馈补偿控制系数。从而在不改变原有系统稳定性的基础上。利用预见前馈将位置给定量提前作用于速度控制器输入端，大大减小了位置跟踪误差。仿真例子验证了该方法的有效性。
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| 关 键 词： | 预见前馈补偿 数控进给伺服 状态反馈 输出反馈 |
| 文章编号： | 1001-2265（2007）07-0061-04 |
| 修稿时间： | 2007-01-17 |
The Study of Preview Feedforword Compensition in CNC Feeding Servo System |
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| NIE Jian-hua,LI Sheng,LI Yang.The Study of Preview Feedforword Compensition in CNC Feeding Servo System[J].Modular Machine Tool & Automatic Manufacturing Technique,2007(7):61-64. |
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| Authors: | NIE Jian-hua LI Sheng LI Yang |
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| Affiliation: | 1. Anhui Academy Key Lab of Electric Power Electronics and Motion Control, Anhui University of Technology, Anhui 243000, China; 2. Ma Steel Automation Engineering Co. Maanshan, Maanshan Anhui 243002, China |
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| Abstract: | In view of the characteristic of the CNC feeding servo system, the pathway of which is known beforehand, this paper adopted the preview feedback compensation control based on the feedback control structure. The P-PI cascade control in the common CNC servo system was converted into state feedback through increasing extensive error system. And the preview feedforward ratio is solved by using the partial differential optimize algorithm.By using the preview feedback, the position setting signal is added to the velocity controller, the position tracking error was greatly diminuted and not change feedback controller. The efficiency of this method has proved by simulink test. |
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| Keywords: | preview feedback compensation control CNC feeding servo state feedback output feedback |
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