齿距偏差测量中测头定位的全闭环控制

Full-closed Loop of Probe Location in Pitch Deviation Measuring System

齿距偏差测量系统中,采用了以圆时栅和长光栅传感器为检测器件的全闭环运动控制设计。其中圆时栅传感器用于机床加工转台的位置检测,长光栅用于定位装置测头的位置检测,将实时测出的位置信息作为反馈信号传送给ARM处理器,从而实现转台和测头的同步控制以及测头的精确定位。试验证明该运动控制系统运行稳定,定位精度高。

Fully closed-loop motion control using a circle time-grating sensor and a long grating sensor as the detection device in pitch deviation measuring system was designed. The circle time-grating was used to position detection of turntable used in machining and long grating was used to position detection of probe used in positioning device. In order to achieve synchronous control between the turntable and probe and precise positioning of the probe, the measured real-time location information as a feedback signal was de- livered to the ARM processor. Experiments show that the system has the advantages of running steadily and high control accuracy.