About absolute encoder (Absolute Encoder)

   Relative to the incremental terms, by definition, is called absolute encoder output signal in one or more weeks during the operation, each of which corresponds to the position and angle of the output code corresponding values are unique, so, they with power-down memory function of absolute also.
    Absolute encoder is based on the principle of the bit computer code to design, such as: 8 yards (00000011), 16 yards, 32 yards and so on. These bits code information is reflected in the encoder code disc, is more dynasty channel groove, each groove successively with 2 lines, 4 lines, 8 lines, 16 lines. . . . . . Choreography. The results of such an arrangement, such as a single-turn absolute terms, that is, the week 360 ° divided into four powers of 2, 8 th, 16 th ,,,, higher bit 2 of 2, The higher precision, range is also greater.
    Thus, in each position encoder by reading through every groove, dark, get a unique set of binary code (Gray code) from zero to 2 of 2 ^ n-1 th power , which is called n-bit absolute encoder. Such mechanical position of the encoder is a photoelectric encoder of the decision, it is not a power outage, the impact of interference.
    Each position of absolute encoder position determined by the machine is unique, it does not need memory, no need to find a reference point, and do not have counted, when the need to know where and when to go to read its position. Thus, anti-jamming features encoder, greatly improving the reliability of the data.