一种优化轨迹段间衔接速度的自适应前瞻控制
发布时间：2019-07-20 09:15
【摘要】：为实现数控系统中轨迹段的高速高精加工,提出一种优化轨迹段间衔接速度的自适应前瞻控制算法。在传统轨迹段间速度衔接模型的基础上,该前瞻算法增加了非对称S曲线加减速控制的轨迹长度约束,并根据相邻两段轨迹的长度变化,自适应规划出轨迹段间的最优衔接速度。通过自主开发的x-y数控系统平台进行验证,综合加工性能试验的加工精度可以达到?0.6 mm,加工效率提高9.8%。结果表明所提出的自适应前瞻算法可避免回溯计算转接点速度时计算量显著增加这一问题,并在加工过程中减少大量微小轨迹段的进给轴频繁启停,从而使相邻轨迹段间衔接速度平滑性、加工效率和加工精度方面相对于传统前瞻算法都有明显提高。
[Abstract]:In order to realize high speed and high precision machining of trajectory segment in NC system, an adaptive prospective control algorithm is proposed to optimize the connection speed between trajectory segments. On the basis of the traditional velocity connection model between trajectory segments, the forward looking algorithm adds the trajectory length constraint of asymmetric S curve acceleration and deceleration control, and adaptively plans the optimal connection speed between trajectory segments according to the length change of adjacent two segments. Through the verification of the self-developed x 鈮，
本文编号：2516629
[Abstract]:In order to realize high speed and high precision machining of trajectory segment in NC system, an adaptive prospective control algorithm is proposed to optimize the connection speed between trajectory segments. On the basis of the traditional velocity connection model between trajectory segments, the forward looking algorithm adds the trajectory length constraint of asymmetric S curve acceleration and deceleration control, and adaptively plans the optimal connection speed between trajectory segments according to the length change of adjacent two segments. Through the verification of the self-developed x 鈮，
本文编号：2516629
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