Single-code-channel absolute position encoder
An absolute position and absolute technology, applied in the field of single-channel absolute position encoder, can solve the problem of difficult to achieve large-stroke measurement, achieve fast encoding and high-speed decoding, and solve the effect of limited measurement
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[0043] The principle of the single-track absolute position encoder of the present invention is as follows Image 6 As shown, it contains two parts: reading system 1 and grating ruler 2. The reading system is composed of an illuminating light source 4, a microscopic imaging lens group 5, a CCD photodetector 6 and a photoelectric signal processing module 7; the grating ruler 2 is composed of a grid mounted and engraved according to a certain rule, forming a coded track 3. The light beam emitted by the illumination light source 4 irradiates the grating ruler 2, the CCD photodetector 6 obtains the coded image information of the engraved line on the coded track 3 through the microscope imaging lens group 5, and finally obtains the grating displacement after passing through the photoelectric signal processing module 7. The photoelectric signal processing module 7 includes a driving module—identification code—position decoding algorithm.
[0044] The encoding mode and decoding algorithm...
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