What will effect the accuracy of linear scale?

A: optical part B: mechanical part C: electrical part D: use in the installation and transmission receiving part, after use the precision of the drop, mechanical part deviation.

A, the influence of optical parts:

Precision grating glass - is the main female rule, the number per mm groove, groove, groove width precision consistency, etc.

Light source - the light of the parallel and consistency, light attenuation.

The light receiving unit, read - read error response.

Optical system after use, pollution, the influence of attenuation.

B, the influence of mechanical parts:

The installation precision. Bearing structure of precision and accuracy. The accuracy of optical form installation.

For example, in terms of the structure of the bearing, deviation cannot eliminate single bearing support structure of the bearing, and after using the deviation will be bigger, and bearing structure in two or three supporting structure, can effectively reduce the deviation of a single bearing.

C, the influence of the electric parts:

The stable precision of power - the influence of light source and receiver unit.

Read the response of electric circuit and error;

Electrical noise, depending on the grating ruler electrical system anti-interference ability;

For example, if the electronic division, may cause the error, according to the introduction of German Hyde han, Hyde

Han the breakdown electric error of the grating ruler and sine cosine curve error will have a very small difference.

D, affects the accuracy of grating ruler used in:

The anti-interference and signal delay output cable (long or faster frequency);

The response of the receiving device and receiving device internal processing possible error.

The dynamic response of the grating ruler when high-speed displacement deviation.

The most common is ourselves installed using the method and results of deviation.

To sum up, the resolution and precision of the grating ruler is two completely different concepts, but both are linked, high resolution can get high accuracy of measurement, but it is not high resolution must be able to get high accuracy of measurement. Under the same conditions, the theory of high resolution raster ruler can get high accuracy of measurement.