China Laser Marking Processing

The effect of the rotary encoder and the grating ruler is to detect the displacement, and to send feedback signal and control device to send the command signal comparison, if there is a deviation, after amplification, control the executive component to make it move toward the direction of eliminating deviation, until the deviation is equal to zero. In order to improve the machining precision of the mechanical device, it is necessary to improve the precision of the detecting element and the detecting system. With rotary encoder, linear encoder (grating ruler, magnetic grid ruler), rotating transformer, tachogenerator is common, such as the encoder is one of the most commonly used detection device of all kinds of machinery, using encoder as a signal detection method, has been widely used in CNC machine tools, textile machinery, metallurgical machinery, petroleum machinery, mining machinery, printing and packaging machinery, plastics machinery, machine, elevator, servo motor, aviation, instrumentation and other industrial automation field. There are many kinds of encoders, and users in different industries have different requirements on the parameters and specifications of encoders.
Encoders are divided into two types: contact type and non-contact type by means of reading. The contact type USES the brush output, the brush contact conductive area or insulation area to represent the code state is "1" or "0"; The non-contact receiving sensitive element is photosensitive element or magnetic sensitive element. When using photosensitive element, the state of the code is "1" or "0" represented by the light transmittance area and the light impervious area.
Encoder to the detection principle, there are optical, magnetic, inductive and capacitive.
Encoders are divided by means of measurement, including linear encoders (grating ruler, magnetic grid ruler) and rotary encoders.
Encoders are divided into three types: incremental encoders, absolute encoders and hybrid encoders according to the signal principle (calibration method and signal output form).