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解决非轴对称曲面的车削加工控制中压电陶瓷伺服刀架的滞后问题 ,消除加工中的滞后误差 .在分析压电陶瓷刀具迟滞特点的基础上建立了 3种消除迟滞误差的前馈控制数学模型 ,即 :升压模型、峰值降压模型及任意点降压模型 .用这些数学模型进行补偿加工实验 ,最大位移误差为 0 .0 5μm,补偿前后的加工精度对比表明 ,采用前馈控制补偿的加工方法能够大大降低加工中的迟滞误差 ,提高非轴对称曲面的加工精度
To solve the hysteresis problem of the piezoelectric ceramic servo turret in the turning machining control of the non-axisymmetric surface and to eliminate the hysteresis error in the machining.On the basis of analyzing the hysteresis characteristics of piezoelectric ceramic tool, three kinds of feedforward control mathematics to eliminate the hysteresis error Model, namely: the boost model, the peak buck model and any point buck model. With these mathematical models for the compensation processing experiment, the maximum displacement error of 0. 05μm, before and after compensation machining accuracy comparison shows that the use of feedforward control compensation Processing method can greatly reduce the hysteresis error in processing, improve the machining accuracy of non-axisymmetric curved surface