Why CANopen absolute encoder is a good helper for order and prohibition
Release time:
2021-01-11 00:00
The word "servo" is derived from the Greek word "slave". "Servo motor" can be understood as a motor that absolutely obeys the control signal: before the control signal is sent, the rotor is stationary; when the control signal is sent, the rotor immediately rotates; when the control signal disappears, the rotor can stop immediately.
Compared with ordinary stepper motors, servo motors have the advantages of fast response speed, accurate positioning, and large moment of inertia. They have been more and more widely used in machine tool, electronic manufacturing equipment, textile machinery, packaging machinery, robots and other industries.
Moreover, with the increasing flexibility of control systems and the rigid demand of intelligent manufacturing to replace labor, the proportion of drive and control will gradually increase in the future, especially in the servo market space such as industrial robots, packaging machinery and medical equipment, which is still expected to maintain rapid growth.
"Structural Principle of Servo Motor"
As the core component of the servo control system, the efficient and stable operation of the servo motor is particularly important. Servo motors are mostly synchronous motors. When the synchronous motor is started, the magnetic pole position of the rotor needs to be known to be able to start the servo motor with a strong torque. In this way, several additional signals are needed to detect the current position of the rotor. Therefore, the big difference between the servo motor and the ordinary motor is that there is an encoder at the tail.
Servo drive and encoder are the two necessary components of the servo motor. The servo drive control part is obtained by reading the encoder: rotor speed, rotor position and mechanical position. The servo system mainly relies on pulses to position.
Simply put, when the servo motor receives 1 encoder pulse, it will rotate the angle corresponding to 1 pulse to realize displacement. The servo motor itself has the function of sending pulses, so every time the servo motor rotates one angle, it will send out a corresponding number of pulses. In this way, the system will know how many pulses have been sent to the servo motor in response to the pulses received by the servo motor. How many pulses are received again, so that the rotation of the motor can be controlled very accurately, so as to achieve more accurate positioning.
"Optical Servo Encoder"
The photoelectric scanning system of the photoelectric encoder is composed of a low-power LED light source, an etched precision grating, and a delicate photoresistor. Therefore, it is not resistant to vibration, impact, pollution, and easily damaged, which is the bottleneck of the development of photoelectric encoders.
For example, pollutants: water, dust, oil, etc. enter the encoder through the failed sealing ring, causing the code wheel hole to be blocked and rusted, resulting in the failure of the photoelectric scanning surface.
The vibration added to the encoder will often become the cause of false pulses, or even the fragmentation of the code disc. Because the more pulses per revolution, the narrower the slot hole interval of the rotating grooved disk, the more susceptible to vibration. When rotating or stopping at a low speed, the vibration added to the shaft or the body causes the rotating grooved disk to shake, and false pulses may occur.
"Magnetoelectric Servo Encoder"
With the advent of magnetic encoding technology, it is possible to tolerate low-cost and high-reliability encoders in harsh environments. It uses the distribution characteristics of the magnetic field on the circumference, generates and provides the position of the rotor through magnetic induction devices and the change of the magnetic field, and replaces the traditional code disc with magnetic devices, which makes up for these defects of the photoelectric encoder.
"Split Magnetoelectric Servo Encoder"
The engineers of Weihai Adike Electronics used the advantages of magnetic encoding technology to develop a high-precision and more reliable product for the servo motor industry, and achieved great success. This is the magnetoelectric split servo motor encoder.
Its advantages are:
✦ Compared with the photoelectric encoder, the delicate grating plate (code disc) is omitted
✦ Small size and high precision can be achieved
✦ Adapt to harsh environments, dirt, dust, oil, condensation and other pollutants will not affect its reliability
✦ Has stronger shock and vibration resistance
✦ The ingenious split type non-contact design avoids the wear of the rigid connection of the bearing, encoder and motor shaft, and greatly extends the service life.
"after-sale warranty"
Split magnetic servo encoder has standard ABZ differential signal output and UVW differential signal output with programmable pole pairs. In addition to the troublesome technical difficulties of servo encoder alignment, IDC's electronic engineers intimately designed the magnetic pole origin alignment software, and the Z-phase position can also be easily programmed online. Customers can easily install and use, no worries at all.
In addition, Adike Electronics, which has strong research and development capabilities, can provide customized services and an 18-month long warranty according to different customer needs. Believe that the small size, flexible installation method, and many advantages are more suitable for the use of the split magnetic encoder of the servo motor, which will surely escort your servo motor with high efficiency and stable operation!
Weihai Adike Electronic Technology Co., Ltd. is mainly engaged in absolute encoders, split magnetic servo encoders, gear induction encoders, CANopen absolute encoders, tool post encoders and other types of encoders. Please feel free to contact Adike electronic! Satisfactory service for customers is the primary purpose of Adike!
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It is a national high-tech enterprise specializing in R&D, production and sales of industrial rotary encoders.
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