@Article{cmes.2024.048804,
AUTHOR = {Xue Wang, Weizhou Zhu, Zhao  Cui, Xingguang Qian, Jinke Yang, Jianjun Jia, Yikun Wang},
TITLE = {Decoupling Algorithms for the Gravitational Wave Spacecraft},
JOURNAL = {Computer Modeling in Engineering \& Sciences},
VOLUME = {140},
YEAR = {2024},
NUMBER = {1},
PAGES = {325--337},
URL = {http://www.techscience.com/CMES/v140n1/56218},
ISSN = {1526-1506},
ABSTRACT = {The gravitational wave spacecraft is a complex multi-input multi-output dynamic system. The gravitational wave detection mission requires the spacecraft to achieve single spacecraft with two laser links and high-precision control. Establishing one spacecraft with two laser links, compared to one spacecraft with a single laser link, requires an upgraded decoupling algorithm for the link establishment. The decoupling algorithm we designed reassigns the degrees of freedom and forces in the control loop to ensure sufficient degrees of freedom for optical axis control. In addressing the distinct dynamic characteristics of different degrees of freedom, a transfer function compensation method is used in the decoupling process to further minimize motion coupling. The open-loop frequency response of the system is obtained through simulation. The upgraded decoupling algorithms effectively reduce the open-loop frequency response by 30 dB. The transfer function compensation method efficiently suppresses the coupling of low-frequency noise.},
DOI = {10.32604/cmes.2024.048804}
}