| NURBS曲线高速高精度插补及加减速控制方法研究 |
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| 引用本文： | 李思益,罗为.NURBS曲线高速高精度插补及加减速控制方法研究[J].计算机集成制造系统,2008,14(6). |
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| 作者姓名： | 李思益 罗为 |
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| 作者单位： | 1. 嘉兴学院,机电工程学院,浙江,嘉兴,314001
2. 陕西科技大学,机电工程学院,陕西,西安,710021 |
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| 摘 要： | 为满足非均匀有理B样条曲线高速高精度插补加工的需要,针对目前参数曲线插补加减速控制方法的不足,提出了一种新的控制方法.该方法考虑了高速高精度加工中容易超限的弓高误差和机床所能承受的法向加速度等因素,使进给速度既符合加减速的要求,又能随曲线曲率自适应调整,因而可在提高轮廓加工精度同时,显著地减小加工过程对机床的冲击.同时,采取了改进、简化算法,实现了快速、实时自适应的非均匀有理B样条曲线插补的加减速控制.实例表明,该方法在实时插补过程中,满足了速度和加减速的要求,保证了插补加工的高速与高精度,且实现了速度的平滑过渡.
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| 关 键 词： | 非均匀有理B样条 曲线插补 加减速控制 实时自适应控制 弓高误差 法向加速度 |
NURBS curve interpolation with high speed and high accuracy & acceleration-deceleration control method |
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| LI Si-yi,LUO Wei.NURBS curve interpolation with high speed and high accuracy & acceleration-deceleration control method[J].Computer Integrated Manufacturing Systems,2008,14(6). |
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| Authors: | LI Si-yi LUO Wei |
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| Affiliation: | LI Si-yi1,LUO Wei2(1.School of Mechatronics,Jiaxing University,Jiaxing 314001,China,2.School of Mechatronics,ShaanXi University of Science & Technology,Xi'an 710021,China) |
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| Abstract: | A new ACCeleration-DECeleration method(ACC-DEC) was put forward,which aimed at the shortages of parabola-line-parabola S shaped ACC-DEC.The proposed approach was designed to satisfy the requirements of Non-Uniform Rational B-Spline(NURBS) interpolation with high-speed and high-accuracy.In this method,it provided good performance from two aspects through taking chord error and jerk into consideration.Firstly,feed-rate could satisfy the demand of ACC-DEC.Secondly,feed-rate could be adapted to the curve's curv... |
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| Keywords: | non-uniform rational B-spline curve interpolation acceleration-deceleration control real-time adaptive control chord error centripetal acceleration |
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