On the campaign servo motor through a pair of circular tooth pulleys, belts, one pair of anti-backlashgear and ball screw deceleration drive;
工作台运动由伺服电机通过两个圆弧齿形皮带轮，和圆弧齿形皮带降速传动。
2
For increased accuracy and repeatability, the unit can be supplied with an external anti-backlash POM (polymer) pinion gear which optimizes coupling to the wind turbine's large yaw bull gear.