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A CT bed motion control method and system based on time-series trajectory points

A motion control system and motion control technology, applied in the field of medical equipment, can solve the problems of complex motion control system and low control precision, and achieve the effects of improving accuracy, simplifying design structure, and eliminating the influence of motion state

Active Publication Date: 2017-08-22
联影(常州)医疗科技有限公司
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Problems solved by technology

[0003] The present invention overcomes the defects of complex motion control system in the prior art, depends on the real-time performance of the system, and has low control precision, and proposes a CT bed motion control method and system based on time series trajectory points

Method used

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  • A CT bed motion control method and system based on time-series trajectory points
  • A CT bed motion control method and system based on time-series trajectory points
  • A CT bed motion control method and system based on time-series trajectory points

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Embodiment Construction

[0034] The present invention will be further described in detail in conjunction with the following specific embodiments and accompanying drawings. The process, conditions, experimental methods, etc. for implementing the present invention, except for the content specifically mentioned below, are common knowledge and common knowledge in this field, and the present invention has no special limitation content.

[0035] Figure 1 to Figure 4 Among them, 1-control unit, 2-motion controller, 3-motor.

[0036] figure 2 Shown is the structure diagram of the CT bed motion control system based on time series trajectory points. The control unit 1 is time-synchronized with the motion controller 2 . The motion controller 2 can control the working state of the motor 3 . The motion controller 2 has at least an internal buffer area with a length of 2 data points for storing received track point data (dummy data), for storing corresponding track point data.

[0037] The CT bed motion cont...

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Abstract

The invention discloses a motion control method of a CT bed based on time-series track points, which includes: receiving the first segment of track point data; receiving a starting motion command, controlling the motor to enter a motion state and executing the first segment of track point data; feedback with the motor Start the status word data of the time information; receive the second segment of track point data based on the status word data; receive the track operation data; after executing the first segment of track point data and the second segment of track point data in sequence, execute the track operation data to control the motor Carry out the corresponding trajectory movement. The invention eliminates the influence of the network delay on the running precision of the motor, and improves the control precision. The invention also discloses a motion control system of the CT bed based on time series trajectory points.

Description

technical field [0001] The present invention relates to the technical field of medical devices, in particular to a CT bed motion control method and system based on time series trajectory points. Background technique [0002] At present, in the computerized tomography imaging system (CT, Computed Tomography), the control of the CT bed mainly uses a closed-loop driver to directly control the motor. In order to make the motor run at a precise time point, a high-precision clock is required. and real-time systems to generate motion control commands at precise points in time. If the CT bed is to start running at a certain moment, and run according to the planned position and speed, the existing method is to send a motion command at the starting moment. In a distributed system, network delays occur during data transmission. The existing method needs to consider the network delay, which will have a negative impact on the accuracy of the start command sent by the controller and the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B19/19
Inventor 谭珍珠
Owner 联影(常州)医疗科技有限公司
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