A dual-motor coaxial real-time synchronous dragging system and synchronization method

Abstract

The invention discloses a dual-motor coaxial-line real-time synchronous dragging system and a synchronization method. The dual-motor coaxial-line real-time synchronous dragging system comprises two coaxial-line symmetrically-installed motor drive devices and a synchronous controller, wherein each motor drive device comprises a stepping motor, a stepping motor driver, an encoder, a speed reducer, a chain wheel, a positioning coded disk, a positioning pin and an air cylinder, and the synchronous controller drives the stepping motor through the stepping motor driver, the encoder is installed on the stepping motor, acquires rotation angle information of the stepping motor and transmits the rotation angle information to the synchronous controller in real time. The dual-motor coaxial-line real-time synchronous dragging system is high in real-time synchronous dragging accuracy, the synchronous controller, the encoder, the stepping motor driver and the stepping motor form a closed-loop system, positional deviation can be compensated in real time, and dual-motor real-time synchronization is improved. The positioning coded disk, the positioning pin and the air cylinder form a mechanical positioning zero-returning system, positioning deviation caused by intermediate drive links including the speed reducer and the like in the operating process of the system can be eliminated, and drive accuracy is effectively improved.

Description

technical field [0001] The invention relates to a motor synchronous dragging system and a synchronizing method, in particular to a real-time synchronous dragging system and a synchronizing method of two motor coaxial lines. Background technique [0002] With the improvement of industrial production automation and the expansion of production scale, the transmission method based on single motor has become more and more difficult to meet the high-precision and high-flexibility production line transmission requirements. The demand for multi-motor transmission continues to increase. Multi-motor transmission control The method refers to a control method that accurately controls and compensates multiple motors at the same time through mechanical or electronic control methods to achieve multi-motor coordinated transmission. It has the advantages of high transmission accuracy and good synchronization. [0003] Taking metal mesh belt transmission as an example, the structure of the me...

AI Technical Summary

Problems solved by technology

If two sprockets are installed on the same shaft and driven by a single motor, the flexibility of the transmission line will be greatly reduced; moreover, when the shaft is long, due to the large torsional moment at both ends of the shaft, it is easy to generate a relatively large torque during the working process. Large torsional deformation, which greatly affects the synchronization of both ends of the metal mesh belt

[0004] It can be seen that the current motor transmission system has the following limitations: 1) The single-motor coaxial transmission system has poor flexibility and cannot be applied to occasions that require high system flexibility. Synchronization phenomenon; 2) The dual-motor transmission method is difficult to balance cost and performance

If a servo motor is used to drive, the real-time synchronization performance can be guaranteed, but the manufacturing cost is greatly increased; if a stepping motor is used, the manufacturing cost can be better controlled, but the stepping motor will lose steps due to load disturbance factors, forming a cumulative error and affecting Transmission accuracy and real-time synchronization

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