Segmentation technology of linear displacement sensor！

With the increase in the measurement accuracy requirements, linear displacement sensor,the pitch range has been unable to meet the requirements, the need to take appropriate measures to subdivision moore stripes. The so-called subdivision is in the Moire fringe signal changes in a cycle, issued a number of pulses to reduce the pulse equivalent. If n pulses are emitted in one cycle, the measurement accuracy can be increased by n, and each pulse corresponds to 1 / n of the original pitch. Since the counting pulse frequency is increased by n times, it is also called n multiplier.
There are two kinds of sub-methods commonly used: one: direct breakdown. In the phase difference of more than 1 / quarter of the moire spacing placed two photoelectric components, can be two phase difference of 90 degrees of electrical signals, with the inverter after the reverse phase to get four different 90 degrees AC signal. Similarly, in the two Mohr fringes placed between the four in turn separated from the 1/4 stripes of the optical components, can also get four phase difference 90° AC signal to achieve quadruple frequency subdivision. Second: circuit breakdown.

absolute encoder, incremental encoder,linear displacement sensor, hybrid encoder, non-magn

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