Mô đun mã hóa furuno-arduino xoay 360 độ tiện dụng

Working principles:
Increment encoder is a rotary sensor that converts rotational displacement to a series of digital pulse signals. These pulses are used to control angular displacement. The principle of optoelectronic scanning is used for the conversion of angular displacement in eltra encoder. A reading system consists of a radial dial consisting of alternate transmission windows and opaque windows (Dockboard) Based on the rotation, also vertically irradiated by an infrared source, light project the image of the dockboard onto the receiver surface. The receiver is covered with a layer of diffraction grating, it has the same window width as the dock. The receiver 's work is to feel the change in disk rotation, the light change is then converted into corresponding electrical changes. Then raise the low-level signal to a higher level, and produces square pulses without any interference, this must be handled by electronic circuits. The reading system usually uses differential method, compare the different signals of two waveforms but with a phase difference of 180°, to improve the quality and stability of output signals. Readings are formed on the basis of differences between two more signals, thus eliminating interference
The increment encoder gives two phase square wave, their phase difference is 90°, usually called channel a and b. One of the channels gives information related to rotation speed, at the same time, sequential comparison by two channel signals, get information about the direction of rotation. There is also a special signal called z or zero channel, the channel gives the absolute zero of the encoder, this signal coincides with the centerline of a channel square wave.
Grating differential error、 cd-rom eccentric、 bearing eccentricity、 error introduced by electronic reader and the inaccuracy of optical part. The unit of measurement that determines the accuracy of the encoder is the electrical degree, the encoder precision determines the pulse fraction generated by the encoder. The following 360° electrical metrics are used to indicate the rotation of the mechanical shaft, the rotation of the axis must be a complete cycle. Know how much mechanical angles are equivalent to 360 degrees of electrical power, you can calculate it using the following formulas: 360 360°/n° /
The error of the encoder is represented by the maximum deviation of two continuous pulse waves in the electrical angle. Error exists in any encoder, this is caused by the above factors. The maximum error of eltra encoder is 25 electrical angle (Under any conditions declared), equivalent to 7%, and phase difference of 90° (Electrical) The maximum deviation between the two channels is 35 electrical degrees equal to the rated deviation of around 10%
Uvw incremental encoder
In addition to the traditional encoders mentioned above, there are also incremental encoders integrated with other electrical output signals. The incremental encoder integrated with uvw is an example