Influence of the optical, mechanical and electrical parts of the encoder on accuracy

I. Impact of the optical part of the encoder on accuracy

1, optical code plate: the main thing is the motherboard accuracy, the number of lines per turn, engraving accuracy, engraved line width consistency, edge refinement and so on.

2. Light emitting sources: parallelism and consistency of light, light attenuation.

3、Light receiving unit: read the angle of clamping, read the response. The pull rope displacement sensor fully combines the advantages of the angle sensor and linear displacement sensor to become a sensor with small installation size, compact structure, large measuring stroke and high accuracy, with the stroke ranging from a few hundred millimeters to a dozen meters.

4. The impact of the optical system after use: pollution, attenuation.

Second, the mechanical part of the encoder on the accuracy of the impact of the

1. Machining accuracy and mounting accuracy of the shaft.

2, bearing accuracy and structural accuracy. Binary encoder is a pre-specified method of coding text, numbers or other objects into binary digits, or converting information and data into specified binary electrical pulse signals.

3. Concentricity of code disk mounting, precision of optical formation mounting.

4. The concentricity of the installation positioning point and the shaft.

Third, the impact of the electrical part of the encoder on accuracy

1, the stability of the power supply (Interpretation: solid stability; no change) accuracy: the impact of the light emission source and receiving unit (influence).

2. Read response and deviation brought about by electrical processing circuits.

3. The influence of electrical noise depends on the anti-interference ability of the encoder's electrical system.

Fourth, the use of industrial encoders brought about by the impact of accuracy

1. Concentricity of the connection with the measuring spindle during installation.

2. Anti-interference and signal delay of the output cable.

3, the response of the receiving equipment and the receiving equipment internal processing of possible deviations. The output signal of the rope displacement sensor is a square wave ABZ signal or Gray code signal, the stroke can be done up to 10,000 mm, linear accuracy of up to 0.01%, resolution according to the configuration of the different maximum can be up to 0.001 mm / pulse.

4. Dynamic response deviation when the encoder rotates at high speed.