A control driving method of a medical accelerator frame

A driving method and accelerator technology, applied in the direction of control using feedback, etc., can solve problems such as complex structure, susceptibility to interference, imperfect protection measures, etc., and achieve the effect of high control accuracy

Active Publication Date: 2017-12-12
江苏海明医疗器械有限公司
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  • Abstract
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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.

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  • A control driving method of a medical accelerator frame
  • A control driving method of a medical accelerator frame
  • A control driving method of a medical accelerator frame

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Embodiment Construction

[0024] The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0025] The control and drive method of the medical accelerator frame of the present invention adopts the control and drive system of the medical accelerator frame to realize the control and drive of the medical accelerator frame. like figure 1 As shown, the control drive system of the medical accelerator frame includes: a main control machine, an RS485 serial communication module, a frequency converter, a motor, a photoelectric encoder, a photoelectric encoder analysis module, a motor brake module and a frame rotation precision Control module, the controlled object is the rack;

[0026] The RS485 serial port communication module includes: a first RS485 standard serial port and a second RS485 standard serial port.

[0027] The main control unit communicates with the frame rotation precision control module through the first RS485 standard serial port, send...

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Abstract

The invention discloses a control driving method for a medical accelerator frame, which comprises the steps that S1, V / F output is carried out, wherein frame angle information is sampled in real time, the sampled frame angle information is sent to a V / F output unit and a judgment unit after being parsed, and the V / F output unit converts the frame angle information into a frequency value and then outputs the frequency value to a main control computer in real time; S2, the main control computer judges whether a frame zero position calibration unit completes a frame zero position calibration operation or not, a step S4 is executed when the frame zero position calibration operation is completed, and a step S3 is executed if the frame zero position calibration operation is not completed; S3, the step S4 is executed after the frame zero position calibration operation is performed; and S4, the main control computer sends a rotation command to a host command response unit, the host command response unit responds to the rotation command and sends the rotation command to a frequency conversion unit, and the frequency conversion unit carries out three-stage speed variation control on the frame according to the rotation command. According to the invention, control driving for the medical accelerator frame is realized by adopting a control driving system of the medical accelerator frame, and the control driving method has the advantages of good reliability, high control precision in frame rotation and the like.

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 method for controlling and driving a frame of a medical accelerator. 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 prescribed speed range. Rack rotation requires a brake function, which can stop the movement of the rack in a very...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05D3/12
Inventor 洪伟陈璞陈彦来于乃昭王金武于振华杨溢平吴建兴
Owner 江苏海明医疗器械有限公司
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