With industrial production technology, production equipment will be advanced and developed during production. The important lease of these production equipment is servo motor encoders. The encoder is a kind of equipment and instrument that compiles and converts the signal, then the servo motor encoder What are the main categories? The following is a detailed introduction.
Servo motor encoders are classified according to the engraving method of the code disc: (there are many encoder classification methods, just talk about the commonly used classifications)
1. Absolute encoder: there are concentric code discs along the way, each of which is composed of light-transmitting and opaque fan-shaped areas. The circular code disc of the code channel has a double relationship, and the number of code channels on the code disc The binary number is different. The food on the plate is the light source, and the corresponding code channel on the other side has a photosensitive element. When? The photosensitive element converts the corresponding signal according to whether it accepts or not to form a set of numbers.
2. Incremental encoder principle: every time the shaft rotates through the specified unit angle, a signal will be sent out (there is also a sine signal, and then modified, chopping out to upgrade the term), usually A, B, C three-phase, A The two phases of B and B are the judgment output delayed by 4 cycles at the same time. B can be output according to the delay relationship. By using the rising and falling edges of the A phase, it can perform 2 times and 4 times frequency processing. The Z phase is a single turn, that is, every turn One.
Pengekod motor servo