Describe how voice coil motor positioning accuracy, voice coil motor generally according to the required accuracy, with the appropriate choice of grating ruler to form a closed loop feedback, voice coil motor and grating ruler accuracy generally determines the positioning accuracy of the entire system.
Raster encoders are commonly used position and velocity sensors and are often used as feedback elements in motion servo systems. The accuracy of the grating encoder has a crucial role to the performance of the system.
Raster encoders are round and straight, circles are called encoders, and linear encoders are called linear encoders. According to the requirements, choose the appropriate grating. The grating ruler is a high-precision linear displacement sensor composed of a light source, a condenser lens, a scale grating, an indicator grating, and a silicon photocell and the like.
The voice coil motor has the advantages of high acceleration and deceleration, small dynamic inertia, high sensitivity, and high system stiffness. The scale is a measuring device in a closed-loop control system.
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Linear motor