1.Definition of closed-loop stepper motors
Closed-loop stepper motors are motors with high precision, high efficiency and high reliability, which achieve precise position and speed control through closed-loop control. Closed-loop stepper motors determine the phase transition corresponding to the rotor position through position feedback and speed feedback, thereby greatly improving the performance of stepper motors.
2.Design significance of closed-loop stepper motors
1.Improve control accuracy and stability: Closed-loop stepper motors achieve precise control of motors by real-time feedback of motor position and speed information. This feedback mechanism can effectively suppress the step-out phenomenon of stepper motors and improve the positioning accuracy and repeatability of the system. Compared with open-loop control, closed-loop control can greatly improve the stability and accuracy of the system, especially for application scenarios that require high precision and high reliability.
2.Reduce step-out and error: In open-loop control, stepper motors are easily affected by factors such as load changes and system inertia, resulting in step-out. By introducing a feedback mechanism, closed-loop control can adjust the current output in time when the motor encounters greater resistance, ensure the continuous operation of the motor, and avoid the problems of loss of step and stalling. This not only improves the reliability of the system, but also enables the motor to maintain stable operation under complex working conditions.
3.Adapt to a wider range of application scenarios: The closed-loop stepper motor system can adapt to a wider range of application scenarios, especially in high-load and high-speed motion control. For example, in CNC milling machines, engraving machines and other equipment, closed-loop control can greatly improve processing efficiency and accuracy, and reduce the problem of loss of step caused by load changes. 4. In addition, closed-loop stepper motors are also widely used in robotics, automated production lines, medical equipment and other fields, promoting the rapid development of industrial automation.
3.Key technologies of closed-loop stepper motors
1.Position closed-loop control: The core of the closed-loop stepper motor lies in its position closed-loop control function. By installing feedback devices such as encoders or grating rulers on the motor, the position information of the motor can be monitored in real time. When the actual position of the motor is found to deviate from the target position during the movement, the system will automatically send a compensation pulse to ensure that the motor can accurately reach the target position, thereby preventing the problem of lost steps and inaccurate positioning.
2.High-precision control: The closed-loop stepper motor achieves precise control of the motor by real-time feedback of the motor's position and speed information. This significantly improves the stability and accuracy of the system and reduces errors, making it suitable for applications that require high-precision control, such as 3D printers, CNC machine tools, and robot joint control.
3.High-performance control chip: In a closed-loop stepper motor system, a high-performance control chip is key. For example, the Hangshun HK32F030C8T6 main control chip provides powerful processing power and rich peripheral interfaces to ensure that complex control algorithms can run efficiently. In addition, driver chips such as Toshiba TB67H450 and encoder chips such as Magtron MT6816 also play an important role, providing ultra-high speed and zero delay characteristics to ensure the accuracy and stability of the control system.
4.Integrated design: The drive-integrated closed-loop stepper motor integrates the driver and the motor body, simplifies the system structure, and reduces the difficulty of installation and maintenance. This design reduces external equipment and wiring, reduces the complexity and failure rate of the system, and improves the reliability of the system.
5.High response and high speed: The closed-loop stepper motor has the characteristics of high response and high speed. In motion control, the system can respond quickly and compensate for deviations to ensure that the motor can maintain high precision and stability even in high-speed motion.
4.Precautions for the use of closed-loop stepper motors
1.Choose the right model: Select a closed-loop stepper motor that fully matches performance and function according to actual needs. This is the key to ensure that it performs its best function and avoid performance waste.
2.Standardization of installation operations: Ensure that the power docking and functional system adaptation of the closed-loop stepper motor are scientific and reasonable, and avoid safety hazards caused by unscientific installation and connection methods.
3.Environmental requirements: Provide a suitable and optimized environment for the closed-loop stepper motor to avoid the influence of oil, dust and corrosive gases.
4.Temperature control: Ensure that the motor driver is well ventilated to avoid damage caused by overheating due to long-term operation.
5.Prevent foreign matter from entering: Since the driver board of the stepper motor is not sealed, be careful not to let metal chips and dust fall into it to avoid short circuits and motor damage.
6.Power connection: Pay attention to the positive and negative markings when plugging in the power supply to avoid connecting the positive and negative poles of the motor incorrectly, which may cause the driver to burn.
7.Monitoring and maintenance: Closely monitor the equipment system, monitor its operating status and the stability and rationality of the relevant data performance, and perform regular maintenance and maintenance to ensure the quality and operating status of the equipment and its system.
Source:https://pomana.hatenablog.com/entry/2024/12/11/180354
Posted
Dec 11 2024, 12:38 AM
by
Amaris07