本文選題：小線段 + 路徑規(guī)劃��； 參考：《機(jī)械工程學(xué)報》2016年11期

【摘要】：由于路徑規(guī)劃過程與速度規(guī)劃過程之間缺乏信息交換,加工過程會出現(xiàn)加工速度與加工質(zhì)量降低的現(xiàn)象,針對這一問題,提出了種高速、高精的路徑動態(tài)前瞻規(guī)劃算法。根據(jù)相鄰加工路徑之間的關(guān)系,規(guī)劃出過渡圓弧半徑的初始值;根據(jù)當(dāng)前過渡圓弧與相鄰的前一個過渡圓弧之間的關(guān)系,調(diào)整當(dāng)前過渡圓弧的半徑值;利用前瞻算法,結(jié)合具體的速度規(guī)劃方式,進(jìn)一步調(diào)整過渡圓弧的半徑值,以確保加工過程中刀具既可以加速到路徑所允許的最大速度,又可以在減速點(diǎn)前進(jìn)行有效的減速。試驗(yàn)表明,通過將路徑規(guī)劃過程與速度規(guī)劃過程相結(jié)合,算法在系統(tǒng)允許的誤差范圍內(nèi)實(shí)現(xiàn)了有效的路徑規(guī)劃,并且最大程度地提高了加工速度,在保證加工精度的同時,提高了加工效率。
[Abstract]:Due to the lack of information exchange between the process of path planning and the process of speed planning, machining speed and quality will decrease in the process of processing. In order to solve this problem, a high speed and high precision algorithm for path dynamic forward planning is proposed. According to the relationship between the adjacent machining paths, the initial value of the radius of the transition arc is planned; the radius value of the current transition arc is adjusted according to the relationship between the current transition arc and the previous one of the adjacent arc; and the forward looking algorithm is used. Combined with the specific speed planning method, the radius value of the transition arc is further adjusted to ensure that the tool can accelerate to the maximum speed allowed by the path during the machining process and can effectively decelerate before the deceleration point. The experimental results show that by combining the path planning process with the speed planning process, the algorithm realizes the effective path planning within the error range allowed by the system, and improves the machining speed to the maximum extent, and at the same time ensures the machining accuracy. The processing efficiency is improved.
【作者單位】： 中國科學(xué)院大學(xué);中國科學(xué)院沈陽計算技術(shù)研究所高檔數(shù)控國家工程中心;沈陽高精數(shù)控技術(shù)有限公司;
【基金】：國家科技重大專項(xiàng)資助項(xiàng)目(2013ZX04007-011)
【分類號】：TG659
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本文編號：2056347