Mechanical multi-turn absolute value encoder and turn number decoding method

Abstract

The embodiment of the invention discloses a mechanical multi-turn absolute value encoder and a turn number decoding method. The encoder comprises a mounting base, an input shaft, a driving gear, at least one driven gear, a decoding IC and at least two single-turn absolute value encoders, the driving gear and the driven gear are rotationally arranged on the mounting base; one end of the input shaftis connected with the driving gear, the driving gear is meshed with at least one driven gear, the number of teeth of each driven gear is prime numbers different from each other, the single-turn absolute value encoders are correspondingly arranged on the mounting base, and the decoding IC is electrically connected with the single-turn absolute value encoders respectively. According to the multi-turn absolute value encoder, the problem that an electronic multi-turn absolute value encoder loses a zero point under the condition that a battery is powered down can be avoided; and the problems of difficult processing and manufacturing and large size caused by the complex structure of a traditional mechanical multi-turn absolute value encoder can also be solved, the multi-turn absolute value encoder is far beyond the traditional mechanical multi-turn absolute value encoder in the multi-turn counting range, and the multi-turn counting range can be easily expanded as required.

Description

technical field [0001] The embodiment of the present invention relates to the field of encoders, in particular to a mechanical multi-turn absolute encoder and a method for decoding the number of turns. Background technique [0002] Encoders are widely used in speed and position detection in the field of automation control. The multi-turn absolute encoder has the advantages of unique position encoding and high precision, and does not need to find a zero point during servo control. It is widely used in the position detection of servo motors in industrial robots. A common multi-turn absolute encoder is an electronic multi-turn absolute encoder with a battery, which is small in size and relatively low in cost, but has the defect of losing zero point when the battery is powered off; another reliable solution is the form of a reduction gear The mechanical multi-turn absolute value encoder does not have the problem of losing the zero point because it does not rely on batteries. Ho...

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Problems solved by technology

[0003] For this reason, the embodiment of the present invention provides a mechanical multi-turn absolute value encoder and a turn number decoding method to solve the defects of existing encoders that lose zero point when the battery is powered off, as well as the problems of complex structure and large volume

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