Research of Control Algorithm for Antenna High Pointing Accuracy

Li Ning; Liu Zhiyong; Wang Na; Lei Zhigang

Astronomical Research and Technology > 2017 > 14(4): 414-420.

Li Ning, Liu Zhiyong, Wang Na, Lei Zhigang. Research of Control Algorithm for Antenna High Pointing Accuracy[J]. Astronomical Research and Technology, 2017, 14(4): 414-420.

Citation:

Li Ning, Liu Zhiyong, Wang Na, Lei Zhigang. Research of Control Algorithm for Antenna High Pointing Accuracy[J]. Astronomical Research and Technology, 2017, 14(4): 414-420.

Citation:

Li Ning, Liu Zhiyong, Wang Na, Lei Zhigang. Research of Control Algorithm for Antenna High Pointing Accuracy[J]. Astronomical Research and Technology, 2017, 14(4): 414-420.

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Research of Control Algorithm for Antenna High Pointing Accuracy

1. Xinjiang Astronomical Observatory, Chinese Academy of Sciences, Urumqi 830011, China;
2. University of Chinese Academy of Sciences, Beijing 100049, China;
3. NO.39 Research Institute of China Electronics Technology Group Corporation, Xi'an 710065, China

More Information

Received Date: February 14, 2017
Revised Date: March 16, 2017
Available Online: November 20, 2023

Graphical Abstract

Abstract

Abstract

With the development of the radio astronomy and the demanding for the angular resolution, the pointing error of the telescope receives a very strict limitation close to 1". In fact, it is the pulse torque that usually results in low frequency resonance exert to the antenna servo system, and the traditional PI(D) controller could not satisfy such high pointing accuracy requirements. In this paper, considering working condition of radio telescope and purpose of servo control, as well as the design principle of controller, a control algorithm based on the Linear Active Disturbance Rejection Controller (LADRC) is put to use. We applied this method to the position loop simulation of an antenna under the Simulink environment. The results prove that the LADRC control algorithm shows better dynamic property, higher control accuracy and stronger robustness.
- Pointing accuracy,
- Low frequency resonance,
- Servo system,
- LADRC,
- Robustness

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References (11)

References

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