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数控机床热误差补偿模型在线修正方法研究 被引量:76

RESEARCH ON ON-LINE MODELINGMETHOD OF THERMAL ERROECOMPENSATION MODEL FORCNC MACHINES
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摘要 提出了一种数控机床热误差补偿模型在线修正或在线建模的方法。所得模型结果不是一个固定的公式,而是由几个简单公式组成的一个确定算法。它在根据模型得出误差预测值的同时,可不断根据输入的新数据修正补偿模型本身,且在修正运算中由于不重复使用已用的数据而使运算时间极短,可用于在线建模。研究结果表明使用本方法可大大提高热误差补偿模型的鲁棒性、通用性和精度。 An on-line modified or modeling method of thermal error compensation model for CNC machines is presented. The resulting model is not a fixed formular, but an algorithm consisting of some simple recursive equations. The thermal error compensation model is modified recursively according to new input data. Since the recursive algorithm no longer uses the former data, the process is very rapid and simple. The result of proposed modeling method indicates that it can highly improve the robustness, versatility and precision of the thermal error compensation model.
出处 《机械工程学报》 EI CAS CSCD 北大核心 2003年第3期81-84,共4页 Journal of Mechanical Engineering
基金 高等学校全国优秀博士学位论文作者专项资金(200131) 国家自然科学基金(50075054)资助项目。
关键词 数控机床 热误差 在线建模 递推算法 CNC Machine Thermal error On-line modeling Recursive algorithm
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参考文献5

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