【摘要】 伺服系统是数控机床的重要组成部分,数控机床的精度和速度指标等往往由伺服系统决定。伺服系统经历了从步进伺服到直流伺服进而到交流伺服的发展过程。而且随着技术的发展,高速高精度加工的直线驱动已成为伺服系统发展的新趋势。更多还原

【Abstract】 The servo-system is an important part in the CNC machine.It decides the precision of the machine and the speed always.The servo-system experiences the process from the step-servo to the DC-servo,even to the AC-servo period.With the technology developing,it is the "highl-speed and hiph-precision making line drive" that becomes the new main trend of the servo system.更多还原