A control drive system for a medical accelerator frame

Abstract

The invention discloses a control driving system for a medical accelerator frame. The control driving system comprises a main control computer, an RS485 serial communication module, a frequency converter, a motor, a photoelectric encoder, a photoelectric encoder analyzing module, a motor braking module, and an accurate frame rotation control module, wherein the controlling target is the frame; the RS485 serial communication module comprises a first RS485 standard serial port and a second RS485 standard serial port; the main control computer communicates with the accurate frame rotation control module through the first RS485 standard serial port, and is used for sending rotation frame control instructions, and receiving and displaying angle information of the frame; the accurate frame rotation control module comprises a judging unit, a frame zero marking unit, a frequency conversion unit, a braking unit, a main unit injunction response unit and a V / F output unit. The control driving system has the advantages that the reliability is high; the frame rotation control accuracy is high.

Description

technical field [0001] The invention belongs to the technical field of electron linear accelerators used in medical treatment and industrial irradiation, and in particular relates to a control drive system for a medical accelerator frame. Background technique [0002] In the application of medium and high energy medical electron linear accelerators, the automatic arc treatment function is one of the important and characteristic functions of the system. [0003] In order to ensure the realization of the automatic radian treatment function, it is necessary to realize precise control of the rack rotation to ensure that the rack rotation is in place with high accuracy and reach the system index. During the treatment process, the running speed of the rack can be adjusted at any time, and the rotating speed of the rack should be controllable within the specified speed range. Rack rotation requires a brake function, which can stop the movement of the rack in a very short time in a...

AI Technical Summary

Problems solved by technology

[0004] At present, the structure of the control and drive system of the medical accelerator frame is relatively complicated, the positioning accuracy of the frame is poor, it is easily disturbed, the work is unstable, and the protection measures are not perfect under abnormal conditions, so it is impossible to complete the automatic arc treatment task with high quality.

Images