The encoder is a rotary sensor that converts rotational displacement into a series of digital pulse signals. These pulses can be used to control angular displacement. If the encoder is combined with a gear bar or a screw, it can also be used to measure linear displacement.
1. An encoder is a device that compiles and converts a signal (such as a bit stream) or data into a signal that can be used for communication, transmission, and storage. The encoder converts an angular displacement or a linear displacement into an electrical signal, the former being called a code wheel and the latter being called a code ruler.
2. According to the readout mode, the encoder can be divided into contact type and non-contact type; according to the working principle, the encoder can be divided into two types: incremental type and absolute type. The incremental encoder converts the displacement into a periodic electrical signal, which is then converted into a counting pulse, and the number of pulses is used to represent the magnitude of the displacement. Each position of the absolute encoder corresponds to a certain digital code, so its indication is only related to the start and end positions of the measurement, regardless of the intermediate process of the measurement.
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