| Citation: | YIN Zengyuan, CAI Yuanwen, REN Yuan, et al. Decoupled active disturbance rejection control method for magnetically suspended rotor based on state feedback[J]. Journal of Beijing University of Aeronautics and Astronautics, 2022, 48(7): 1210-1221. doi: 10.13700/j.bh.1001-5965.2021.0021(in Chinese)
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A decoupled anti-interference control method for rotor tilting is proposed to address the strong coupling of rotor deflection channels of magnetically suspended control and sensitive gyroscope (MSCSG), as well as disturbance instability during spacecraft attitude measurement. The coupling of rotors tilting with two degrees of freedom is analyzed, and a decoupling controller is designed based on state feedback. The MSCSG interference torque to the magnetically suspended rotor produced by attitude motions during spacecraft attitude measurement is deduced. The anti-interference control of the rotor is realized by the active disturbance rejection control (ADRC). The tracking performance and stability of the constructed extended state observer (ESO) are analyzed. The stability of the system with bounded inputs is achieved by adjusting the nonlinear state error feedback coefficients. Simulation results show that the state feedback decoupling can realize the complete decoupling of tilting freedom degrees, that ESO has good tracking performance, and that ADRC has better anti-interference performance than the traditional PID control method.
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