I.Working Principle of Absolute Encoders
The working principle of absolute encoders is based on the detection of holes or lines on an optical code disk by photoelectric sensors. The core component of the encoder is a disk with a specific code, which has many tracks of engraved lines or holes, arranged in a specific pattern (such as 2-line, 4-line, 8-line, etc.). When light passes through or reflects these holes or lines, the photoelectric sensor generates corresponding electrical signals. By detecting the state of each hole or line, the signal processing circuit can determine the position of the code disk, thereby determining the position of the object. Each hole or line corresponds to a unique code, and by digitizing these codes, the precise position of the object can be obtained.
Briterencoder high-precision absolute encoders use a new patented technology with a precision mechanical gear structure inside. The axis drives the gear to rotate, and the internal magnetoresistive chip senses changes in the magnetic field, recording the rotation angle. Additionally, the internal design has no battery, yet it can retain power-off memory, meaning that even if data changes during a power failure, it can still record the data.

II.Signal Output of Absolute Encoders
1、Unique Encoding System
Briterencoder absolute encoders support multiple output formats, such as RS485, RS232, TTL, CAN, CANopen, SSI, BISS, SPI, 4-20mA, 0-5V, 0-10V, as well as RS485&4-20mA, RS485&0-5V, RS485&0-10V, etc. These output methods enable the absolute encoder to communicate conveniently with devices such as motor controllers, achieving real-time data transmission and processing.

III.Application of Absolute Encoders in Servo Motor Control
Position Control:
Absolute encoders can provide the absolute value of each position and store it in the motor controller. Therefore, even if the motor is powered on again or other faults occur, it can quickly and accurately return to the previous position. Additionally,Briterencoder absolute encoders can memorize the data post-change even during power outages. The controller adjusts the motor’s drive current based on the position information fed back by the encoder, thereby achieving precise control of the motor’s position.
Speed Control:
By monitoring the number and direction changes of pulses output by the encoder, automatic control systems can accurately calculate the motor’s speed and adjust the control signals in time to maintain system stability. This closed-loop control structure can effectively improve the performance and response speed of the motor system. Briterencoder absolute encoders can directly output the speed value, with measurements possible within a range of 0-8000 RPM.

IV.Advantages of Absolute Encoders
High Precision: Absolute encoders can provide high-precision position feedback signals, making the control of servo motors more accurate.
Strong Anti-interference Ability: Since absolute encoders use photoelectric detection principles, they have strong anti-interference capabilities and can operate stably in harsh industrial environments.
No Need for Zero Return: Compared to incremental encoders, absolute encoders do not require a zero return operation to directly read the current position information. Moreover, Briterencoder absolute encoders can be zeroed at any position, making the operation quick and simple.
IV.Application Examples
Absolute encoders for servo motors are widely used in production lines, automated equipment, semiconductor manufacturing, and other fields. In these areas, there are high requirements for the control of motor position, speed, and acceleration, and absolute encoder servo motors can meet these requirements, improving the motion accuracy and efficiency of the equipment.

In summary, absolute encoders play an important role in servo motor control. By providing high-precision position feedback signals and strong anti-interference capabilities, they can achieve precise control of servo motors, enhancing the stability and reliability of the system.
For more information or to make a purchase, please visit our official website https://briterencoder.com/. Choose BriterEncoder and experience the excellent enjoyment of high-precision measurement!