Stepper motors are widely used in the field of mechanical control. However, stepper motors have some drawbacks, such as being susceptible to external disturbances, unstable speed, etc. In order to solve these problems, the stepper motor encoder came into being. This article will introduce the stepper motor encoder from the following aspects.
1. What is a stepper motor encoder?
A stepper motor encoder is a device used to measure the rotation angle and speed of a motor. It usually consists of a photoelectric sensor, a rotating disk, and a signal processor. Its main function is to realize position control and speed control by detecting the position of the motor rotor.
2. The role of the stepper motor encoder
The main function of the stepper motor encoder is to measure the rotation angle and speed of the motor. When the motor is moving, the encoder will detect the position of the motor rotor through the sensor and convert it into a digital signal. These digital signals can be used to control the movement of the motor, thereby achieving position control and speed control.
3. The functions of the stepper motor encoder
The functions of the stepper motor encoder mainly include the following aspects.
a. Measure the rotation angle and speed of the motor.
b. Realized position control and speed control.
c. Improve the control accuracy and stability of the motor.
d. Protect the motor from external disturbances.
e. Improve the efficiency and service life of the motor.
4. The principle of stepping motor encoder
The principle of the stepper motor encoder is based on photoelectric sensing technology. Its main components include photoelectric sensors, rotating disks and signal processors. When the motor moves, the rotating disk will rotate accordingly, and the photoelectric sensor will detect the photoelectric signal on the rotating disk and convert it into a digital signal. These digital signals can be used to control the movement of the motor to achieve position control and speed control.
5. The classification of the encoder
According to the working principle and structural characteristics of the encoder, it can be divided into the following categories
a. The photoelectric encoder uses a photoelectric sensor to detect the photoelectric signal on the rotating disk to achieve position control and speed control.
b. The magnetic encoder uses a magnetic sensor to detect the magnetic signal on the rotating disk to achieve position control and speed control.
c. The mechanical encoder detects the mechanical signal on the rotating disk through a mechanical sensor to realize position control and speed control.
6. The application of the encoder
Stepper motor encoders are widely used in mechanical control, automation control and other fields. For example, it can be used in precision positioning, robot control, medical equipment, etc.
7. The advantages and disadvantages of the encoder
Stepper motor encoder has the following advantages
a. Position control and speed control can be realized with high precision.
b. Convenient control The movement of the motor can be controlled by digital signals.
c. Good stability can prevent the motor from being affected by external disturbances.
d. High efficiency can improve the efficiency and service life of the motor.
The disadvantages of stepper motor encoders mainly include the following aspects
a. The cost of the stepper motor encoder is relatively high, which increases the manufacturing cost of the motor.
b. The structure and working principle of the stepper motor encoder are relatively complicated, and professional and technical personnel are required for maintenance and repair.
8. Precautions when using stepper motor encoder
When using the stepper motor encoder, the following points should be paid attention to: a. Pay attention to the protection measures of the stepper motor encoder to prevent it from being affected by the humid environment or static electricity; b. Pay attention to the inspection and maintenance of the stepper motor encoder to Ensure the normal use of the stepper motor encoder; c. Pay attention to setting the safety parameters of the stepper motor encoder to prevent abnormal conditions of the stepper motor encoder.
If you are new to step motors, you may be wondering how to mount one in your application.
You’ll need to be concerned with three things: piloting the motor, fastening it to the mounting surface, and coupling the shaft to your load.The motor outline drawing below, which we acquired from a vendor of high quality step motors, highlights all three:Item 1 is the shaft.
You’ll need a coupling to connect the shaft to your load.
We’ll cover this in more detail in a future post.Item 2 is the pilot.
You’ll need a precise hole in your mounting bracket that is concentric to whatever you’ll connect to the motor shaft.Item 3 represents the feature you’ll use to fasten the motor to the mounting surface – in this case four through holes that can accept a screw or bolt.If you’re not up for machining your own, mounting brackets in standard sizes like NEMA 17, 23 and 34 are available for purchase.
Since step motors generate heat, aluminum mounting brackets are preferable to steel because aluminum will conduct heat out of the motor more efficiently, so you can likely get by with a smaller, less expensive motor.
The Stepper Motor for Robotic Arm is a synchronous electric motor that split the full circular motion into different numbers of steps.
It is best for Robotic Arm.
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