【摘要】：為實(shí)現(xiàn)數(shù)控系統(tǒng)中軌跡段的高速高精加工,提出一種優(yōu)化軌跡段間銜接速度的自適應(yīng)前瞻控制算法。在傳統(tǒng)軌跡段間速度銜接模型的基礎(chǔ)上,該前瞻算法增加了非對(duì)稱(chēng)S曲線加減速控制的軌跡長(zhǎng)度約束,并根據(jù)相鄰兩段軌跡的長(zhǎng)度變化,自適應(yīng)規(guī)劃出軌跡段間的最優(yōu)銜接速度。通過(guò)自主開(kāi)發(fā)的x-y數(shù)控系統(tǒng)平臺(tái)進(jìn)行驗(yàn)證,綜合加工性能試驗(yàn)的加工精度可以達(dá)到?0.6 mm,加工效率提高9.8%。結(jié)果表明所提出的自適應(yīng)前瞻算法可避免回溯計(jì)算轉(zhuǎn)接點(diǎn)速度時(shí)計(jì)算量顯著增加這一問(wèn)題,并在加工過(guò)程中減少大量微小軌跡段的進(jìn)給軸頻繁啟停,從而使相鄰軌跡段間銜接速度平滑性、加工效率和加工精度方面相對(duì)于傳統(tǒng)前瞻算法都有明顯提高。
[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，

本文編號(hào)：2516629