Technical features and common applications of integrated servo motors

1. Basic definition and function of integrated servo motors

Integrated servo motors integrate key components such as servo motor body, encoder, and driver to form a complete servo system. This design not only simplifies the installation and maintenance of the system, but also improves the reliability and response speed of the system. The encoder is used to detect the position and speed of the motor in real time, and the driver is responsible for receiving the control signal and driving the motor to rotate, thereby achieving high-precision position, speed and acceleration control.

2. Working principle of integrated servo motors

The working principle of integrated servo motors is based on a closed-loop control system. The system detects the position and speed of the motor in real time through the encoder, compares the detected actual value with the target command value, and adjusts the input of the motor (such as current, voltage, frequency, etc.) according to the comparison result, so that the actual output of the motor is infinitely close to the target command value. This closed-loop feedback mechanism ensures high-precision control and high dynamic response of the motor.

3. Technical characteristics of integrated servo motors

‌1. High precision‌: The integrated servo motor adopts advanced closed-loop control technology, and the encoder feeds back the position and speed information of the motor in real time to achieve high-precision control. Its positioning accuracy can reach 0.001mm or even higher. ‌2. High response speed‌: The integrated servo motor has a fast response capability and can reach the target position and speed in a very short time. This makes it have significant advantages in situations where high-speed and high-precision motion is required.

‌3. Good stability‌: With advanced control algorithms and drive technology, the integrated servo motor can maintain stable operating performance in various complex environments, and has strong anti-interference ability, which can effectively resist external interference and noise.

‌4. High flexibility‌: The integrated servo motor supports a variety of control modes, such as position control, speed control and torque control, etc., which can be customized according to actual needs to meet the needs of different applications.

‌5. Small size and space saving‌: The integrated servo motor integrates components such as servo motors, drivers and encoders, which greatly improves the system integration and saves installation space. In addition, the integrated design of brake + reducer can be realized, avoiding wiring problems between multiple devices and making the entire device more compact.

‌6. High precision and good stability‌: The integrated servo motor adopts a closed-loop control system, which can monitor the speed and position of the motor in real time and adjust it according to the feedback information, thereby ensuring the accuracy and stability of the motor operation‌.

‌7. Easy to install and maintain‌: The integrated design simplifies the installation and maintenance process, requiring only one power supply and one signal input, and no additional wiring and configuration‌.

‌8. Support multiple control methods‌: The integrated servo motor supports multiple bus protocols, such as CANopen, RS485, etc., and can customize the selection of pulse, RS-485 communication, CAN communication and other methods, which are suitable for a variety of application scenarios‌.

4. Wide application of integrated servo motors

1. In the field of industrial automation, integrated servo motors are widely used in various equipment, such as automated production lines, packaging machinery, etc. They ensure the stability and high responsiveness of the equipment and improve production efficiency and quality‌. For example, in CNC machine tools, integrated servo motors are used for high-precision position control to ensure that the machine tool can accurately perform cutting, drilling, milling and other operations along the preset path‌.

2. Integrated servo motors are also widely used in robotics. They drive and control the joints and end effectors of the robot, enabling the robot to complete various tasks such as welding, gluing, painting, assembly, etc. according to the specified path. The precise control of the integrated servo motor ensures the accuracy and reliability of the robot's movements.

3. CNC machine tools are one of the important application areas of integrated servo motors. Integrated servo motors are used to drive and control the spindle, feed axis and automatic tool changing system of the machine tool, enabling it to accurately change tools and perform various processing operations along the preset path. This high-precision control ensures the quality and efficiency of processing.

4. In the aerospace field, integrated servo motors are used to control various moving parts of aircraft, such as rudders, flaps, etc. Their high precision and reliability ensure the stability and safety of the aircraft.

5. Integrated servo motors are also used in medical equipment, such as surgical robots and precision testing instruments. Their high-precision control characteristics enable medical equipment to perform micron-level operations, improving the success rate of surgery and the accuracy of equipment.

Source:https://steppermotor.pixnet.net/blog/post/186996367

How to improve the operating efficiency of closed-loop stepper motors

1. Basic definition of closed-loop stepper motors

A closed-loop stepper motor is a stepper motor that adds an encoder to the stepper motor to achieve high-precision, low-jitter functions through position feedback and speed feedback. The closed-loop stepper motor detects the actual position and speed of the motor, compares it with the target position and speed, and adjusts the running state of the motor through the feedback mechanism, thereby ensuring that the motor's movement is more precise and stable.

2. Working principle of closed-loop stepper motors

The closed-loop stepper motor system is mainly composed of a stepper motor, a driver, and an encoder. The driver receives the control signal and drives the stepper motor to operate. The encoder monitors the position information of the motor in real time and feeds this information back to the controller. The controller uses the PID control algorithm to calculate the adjustment amount based on the deviation between the position information fed back by the encoder and the target position, and adjusts the running state of the motor through the driver to achieve higher positioning accuracy and more stable system performance.

3. Main functions of closed-loop stepper motors

1. Real-time monitoring and feedback: The closed-loop stepper motor monitors the position information of the motor in real time through the encoder, and uses the PID control algorithm to calculate the deviation and adjust the motor operation status according to the feedback signal, thereby realizing the real-time monitoring and feedback mechanism. This mechanism enables the stepper motor to achieve higher positioning accuracy.

2. High-precision positioning: The closed-loop stepper motor significantly improves the positioning accuracy through the real-time feedback mechanism. For example, the encoder accuracy can reach thousands or even tens of thousands of pulses per revolution, which makes the positioning accuracy of the stepper motor reach 0.01 degrees or even higher. This high-precision positioning capability is crucial in fields such as precision manufacturing, robotics and medical equipment.

3. Enhance system stability: The closed-loop stepper motor can effectively suppress system oscillation and improve system reliability and work efficiency through real-time monitoring and adjustment. In addition, the closed-loop stepper motor can remain absolutely still when stopped without slight vibration, which is suitable for low-rigidity mechanism applications that require vibration-free stopping.

4. Improve response speed: The closed-loop stepper motor can respond quickly to control instructions and achieve precise positioning. Although its response speed is slower than that of an open-loop stepper motor, it can still maintain a high torque output when running at high speed. It is commonly used in applications with a speed range of 0-1500rpm.

4. Measures to improve the efficiency of closed-loop stepper motors

1. Optimize drive control: Subdivision drive can subdivide each step angle into smaller angle units, reduce vibration and noise, and improve the resolution and response speed of the motor. The adaptive speed regulation algorithm can automatically adjust the speed according to load changes, avoid unnecessary energy loss, and improve the dynamic performance of the system.

2. Improve mechanical structure: Reduce friction loss, use high-quality bearings and lubricants to reduce internal friction; optimize the air gap design between the rotor and stator to ensure minimum energy consumption; use lightweight materials to make the motor housing and rotor components to reduce weight and reduce energy requirements during starting and stopping.

3. Use efficient power management: Use efficient switching power supplies instead of traditional linear power supplies to improve conversion efficiency, reduce heat generation, and extend the service life of the motor.

4. Implement load management: Regularly check the operating status of the equipment to ensure that the motor works under rated load and avoid overload or underload. Use the monitoring system to track the motor's operating status in real time, adjust the load distribution in time, and achieve optimized management.

5. Strengthen maintenance: Regularly clean the motor, check the insulation status, lubricate the moving parts, etc. to ensure the motor's good operating status and reduce energy consumption.

6. Use variable frequency drive technology: Variable frequency drive technology can automatically adjust the motor's speed and torque according to the change of load to achieve energy saving. Controlling the motor through the frequency converter can effectively reduce the energy consumption during no-load operation and improve the overall operating efficiency.

7. Closed-loop control: The closed-loop control system monitors the actual operating status of the motor in real time through the feedback mechanism, and adjusts the motor's output as needed to ensure that the motor always runs in the optimal state, thereby improving efficiency.

Source:https://steppermotor.pixnet.net/blog/post/185470684