Dual channel spacecraft attitude control method based on an external disturbance observer

XU Limin; ZHANG Tao

doi:10.16511/j.cnki.qhdxxb.2017.26.031

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Journal of Tsinghua University(Science and Technology) ›› 2017, Vol. 57 ›› Issue (6) : 631-636. DOI: 10.16511/j.cnki.qhdxxb.2017.26.031

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Dual channel spacecraft attitude control method based on an external disturbance observer

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Abstract

A dual channel attitude control method was developed for rigid body spacecraft based on a disturbance state observer. A linearized attitude control dynamics and kinematics model of the spacecraft was incorporated into a dual channel control system with a stabilization compensator controller and a servo compensator to adjust the control variables for servo tracking. The system poles are reassigned by state feedback to satisfy the given dynamic and static indicators, while estimated values of the interference obtained by the disturbance state observer are fed back via a compensating channel to the input to suppress disturbances. Simulations confirm that this control method has excellent static and dynamic properties and strong anti-interference ability.

Key words

attitude control / dual channel / disturbance observer / internal model principle

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XU Limin, ZHANG Tao. Dual channel spacecraft attitude control method based on an external disturbance observer[J]. Journal of Tsinghua University(Science and Technology). 2017, 57(6): 631-636 https://doi.org/10.16511/j.cnki.qhdxxb.2017.26.031

References

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