A source replacement planning method for a radio telescope feed source support system

Abstract

The invention relates to a source change planning method for a radio telescope feed source support system, which is characterized in that it includes: determining the start position of the source change and the end position of the source change; Inflection point position for source change; from the starting point of source change to the inflection point of source change, the source is replaced by a straight line segment; from the inflection point of source change to the end position of source change, the source is changed by a focal plane segment. Using the method of combining the source change of the straight line segment and the source change of the focal plane segment, the pulling force of the cable drive is reduced to ensure the controllability of the cable force. In the source change of the straight line segment, the attitude angle of the cable drive is moved to the pitch angle corresponding to the position of the focal plane. , the velocity and acceleration changes in the focal plane segment become smaller, ensuring the stability of the feed support system mechanism, and the movement angle of the AB-axis rotation mechanism and the multi-beam rotation mechanism is planned according to the entire source change time, which can reduce the angular velocity of the source change , making the system motion stable.

Description

technical field [0001] The invention relates to the field of motion control of a radio telescope, in particular to a source change planning method of a radio telescope feed support system. Background technique [0002] The Five-hundred-meter Aperture Spherical radio Telescope (FAST) project, known as "China's Sky Eye", is a national "Eleventh Five-Year" major scientific and technological infrastructure construction project, and its main components include reflectors and feed receivers The basic idea of ​​the device is to reflect and converge the radio wave through the reflective surface, and then the feed source receiving device completes the reception of the radio wave. The feed receiving device moves through the feed support system, and the feed support system adopts three active control mechanisms: cable-driven parallel mechanism, AB axis rotation mechanism and Stewart parallel mechanism. The cable-driven parallel mechanism can control the feed receiver to the correct po...

AI Technical Summary

Problems solved by technology

The source change planning method adopted in the prior art scheme is to change the source in a straight line for the whole section, which may easily cause the cable force of the cable drive to exceed the limit, and may easily cause the control mechanism of the feed source support system to be unable to carry and cause an alarm; in addition, the existing The technology also does not consider the influence of the attitude angle of the cable drive on the pull force of the cable drive, which may easily lead to unstable operation of the feed support system mechanism

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