A synchronous control system and method for multiple motors in a CT machine

Abstract

The invention relates to a multi-motor synchronous control system in a CT machine, which includes: at least two DC motors installed on both sides of a scanning bed; a main control unit for sending PWM modulation codes; a synchronous processing unit for synchronous control. The present invention also relates to a synchronous control method for multiple motors in a CT machine, which uses at least two DC motors to drive the lifting motion of the scanning bed and performs synchronous control, which can compensate for the inconsistency of the mechanical installation and the motion characteristics of each motor. The extension length of the two push rods is inconsistent; it uses at least two DC motors to push the tilting movement of the rack and simultaneously controls it synchronously, which can compensate for the extension of the two push rods caused by the inconsistency of the mechanical installation and the motion characteristics of each motor. inconsistent length. The synchronous control system and method of the present invention control the synchronous movement of the dual motors of the scanning bed and the frame in the CT machine, so that the scanning bed and the frame can accurately stop during the movement process, thereby prolonging the service life of the product.

Description

technical field [0001] The invention relates to the technical field of multi-motor synchronous control, in particular to a multi-motor synchronous control system and method applied in a CT machine. Background technique [0002] In high-precision, high-safety, heavy-duty systems such as medical care and CNC machine tools, multi-motor motion synchronization control is a very important core issue. The synchronization of multi-motor motion directly affects the reliability and service life of CT machines. [0003] With the development of numerical control technology, it is more frequent to use multiple motors in one system to drive heavy load systems for movement. For example, for the scanning bed in the CT machine, the scanning bed of the traditional CT machine uses a motor and a booster spring to start the up and down movement of the scanning bed. This traditional method of using a single motor and a booster spring has technical requirements and The production process is very ...

AI Technical Summary

Problems solved by technology

However, if the synchronous motion control of the two motors on both sides of the frame is not done well, it will seriously affect the working performance and service life of the CT machine

In addition, it will also affect the accuracy of the stop position of the scanning table during the movement process, thereby affecting the quality of CT image imaging, and thus affecting the diagnostic results

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