About the definition of absolute encoder

About the definition of absolute encoder

Definition of absolute encoder

Regarding the absolute value encoder, many people still stay in the position of "power failure" to save the concept. This is one-sided and limited. The "absolute value" encoder is not only a problem of power failure, for the receiving equipment, the real The meaning of "absolute value" lies in the independence and uniqueness of each position of its data refresh and reading, whether inside or outside the encoder, and does not depend on the "absolute code" of the previous reading. For this definition of "absolute" The market is still vague, and for this reason, some businesses will "deliberately confuse" this concept.

The absolute value single-turn encoder + internal and external count accumulation device is confused with the true absolute value true multi-turn encoder. Absolute value single lap + lap counting device, it is absolute value within 360 degrees, but after 360 degrees, its position is not "independent" or "unique", it depends on internal or external counting to determine how much For the absolute position information of the single circle in the circle, this internal or external "counting device" has the same nature as the incremental encoder + counting device + battery memory, any error in counting, or the power supply when the counting device is working The instantaneous failures will cause errors and accumulate that cannot be judged, resulting in deceptive false absolute information. The true absolute value multi-turn encoder, except that the position within 360 degrees is absolutely unique, after 360 degrees continues to have an absolute value encoder driven by a gear mechanism, it still provides "independent" "unique" and independent Read the accumulated absolute code in the previous data refresh. In fact, from the definition of "absolute", the previous "false multi-turn absolute encoder" with a single-turn absolute + count accumulation device can no longer be called an "absolute multi-turn encoder". Within 360 degrees is absolute, but the working range of more than 360 degrees is no longer an "absolute value code".

The "absolute working mode" of the receiving device is confused with the "absolute" of the absolute encoder. The "absolute" of the receiving equipment refers to the "absolute" working mode of the receiving equipment without continuous counting and accumulation, and all positions are relative to the origin of the equipment. In fact, this mode is through the incremental encoder + its own counting accumulation device + battery memory, The "absolute" position information can also be provided to the equipment. It is not a concept at all with the "absolute encoding" of the absolute encoder. It has counting errors and the possibility of accumulated errors, the possibility of power supply failure of the counting device, and high-speed time. The count cannot respond, etc.