基于振动反馈的数字雕刻机进刀率自动调整方法

本资料包含pdf文件1个，下载需要1积分

The processing precision and efficiency of engraving machine are greatly affected by the feed rate. Aiming at the improvement of the engraving machine~ work efficiency without decreasing the accuracy, the feedback control techniques of engraving machine＇s feed rate adjustment were investigated. The vibration signals of axis X, axis Y and axis Z of during working process as well as the influence factors were analyzed. Based on ARM S3C2410 controller, the acceleration sensor A/D sampling technique and the Linux programming language were used, the model of feed rate and vibration signals of axis Z were established. Combined with the stepping motor＇s ＂S＂ type speed control, a method based on the vibration as feedback signals to automatically adjust the feed rate was presented. The results indicate that this method can improve the processing efficiency of the engraving machine, while ensuring the precision.雕刻机的加工精度和加工效率在很大程度上受进刀率参数的影响，针对如何提高雕刻机加工精度和效率的问题，将反馈控制技术应用到雕刻机进刀率的调整中，开展了对雕刻机振动信号的研究，分析了加工过程中X轴、Y轴和Z轴3个方向的振动信号以及影响振动信号的因素，以S3C2410ARM控制器为核心，运用加速度传感器A／D采样技术和Linux编程语言，建立了进刀率和Z轴振动信号之间的关系，提出了一种基于振动反馈信号的自动调整进刀率方法，结合步进电机的“S”型加减速控制，取得了良好的控制效果。研究结果表明，该进刀率自动调整方法可以提高雕刻机的加工效率，同时保证加工精度。