【摘要】 基于光栅刻划机驱动机构(宏动--摩擦驱动、微动--压电陶瓷)建立驱动模型和动力学模型即二阶弹簧阻尼系统动力模型,通过对宏动部分与微动部分的位移输入,模拟其最终刻划刀具位移量,通过应用Matlab中Simulink部分对涉及的计算表达式进行求解,绘制刀具定位的相应仿真曲线。得到理论摩擦驱动和压电陶瓷组合(以下叫实验组合)位移曲线与常规组合(如滚珠丝杠、齿轮齿条等)运行曲线。得出实验组合位移规律性强、控制方便、能够达到设计的精度要求。更多还原

【Abstract】 Based on grating ruling machines drive mechanism(macro-friction drive,micro-)piezoelectric ceramics driver model and dynamics model is set up,which also called the second order dynamic model of spring damping system,and through the input of macro moving parts and micro displacement,the final score tool displacement was simulated,and by applying Matlab Simulink the computing expressions involved was solved,and the corresponding simulation curve of the positioning drawing was drawn.The displacement curve of theory friction drive and piezoelectric ceramic combination(hereinafter called experimental combination)and the conventional combination(e.g.,ball screw,gear and rack,etc.) running curves were obtained.The experimental combination displacement is strong in regularity,easy to control,and its precision can meet the design requirements.更多还原