Brief description and basic principle of angle encoder

Release time:

2023-03-13

In recent years, the rapid development of equipment, encoders in the production process also play a very important role, the proportion of market use is very high, the key is widely used in intelligent robots, elevator cars, wind power generation, CNC lathes, engineering machinery and equipment, tobacco machinery, printing equipment, petrochemical, packaging equipment, textile equipment, food machinery and equipment, auto parts production line, high-precision spraying, electric welding welding, high-precision position control industrial production machinery automated production line These industrial industries, Encoders not only have a broad future development trend in the sales market, but also are favored by the sales market!

Angle encoder

A brief description of the angle encoder

The angle encoder is generally a clear and accurate measurement area, and the rotary encoder determines the direction.

Rotating encoders only determines whether it is a rotation or a rotation and rotation rate. In addition to clarifying this, the angle encoder can also clarify which direction it is located at this stage, such as the motor, and in what state it is terminated, then an angle encoder is needed

It integrates opto-electromechanical technology in one of the rate angular displacement sensor, when the encoder shaft is rotated to push the grating ruler back to rotate, the light emitted by the bright components is cut into intermittent light source by the gap of the grating ruler, and is accepted by the components to cause the original signal, the signal is processed by the subsequent power circuit, exported single pulse or coded signal, characterized by small size, light weight, many types, full role, high frequency response, high discrimination ability, small torque, low energy consumption, stable quality, reliable and durable

What is the rationale

By a central axis optical code disk, the base has a ring through, dark lines, optical sending and receiving components loading, four sets of sinusoidal waveform signals composed of A, B, C, D, each sinusoidal waveform is 90 degrees apart from the phase angle (compared to a cycle is 360 degrees), the C and D signals are in the opposite direction, accumulated on A and B phases, which can improve the stable signal; In addition, a single Z-phase pulse is derived per revolution to mean the zero reference bit.

Encoder raw materials

The raw materials of the encoder code wheel are laminated glass, metal materials, plastic, laminated glass code wheel to accumulate very thin lines on the glass, its heat resistance is good, high accuracy, metal material code disc is only through and blocked engraving lines, not easy to break, but because the metal material has a certain thickness and thickness, precision will be limited, its heat resistance needs to be an order of magnitude worse than glass, plastic code disc is economical and practical, its cost is low, but precision, heat resistance, service life are worse.

Encoder screen resolution

Screen resolution - encoder to give 360 degrees per turn to give how many through or dark lines called screen resolution, also known as analysis measurement range, or directly weigh how many lines, generally in each revolution measurement range 5 ~ 10000 lines.

Encoder signal export

The signal is derived with sinusoidal waveform (current or working voltage), square wave, open collector circuit (PNP, NPN), push-pull type in various forms, in which TTL is medium and long-term differential signal driving (symmetry A, A-, B, B-, Z, Z-), HTL is also known as push-pull, push-pull circuit derivation, encoder signal acceptance hardware interface should match the encoder.

Brief introduction to the working principle of magnetic rotary encoder

What is an angle encoder?