Parametric Design for Observer-based P2I Controller with Applications to High-accuracy Tracking Control in Space Optical Communication

Zhao, Tianyi; Duan, Guang‐Ren

doi:10.1007/s12555-021-0944-9

Cited by 1 publication

(2 citation statements)

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“…In [54], [55], [57], the observer-based parametric control of linear systems are discussed from different perspectives. In this paper, we extended this parametric design method to nonlinear time-varying systems based on the HOFA system approach.…”

Section: Discussionmentioning

confidence: 99%

“…4) Substitute the optimal parameter Z * into the parametric expression (58) to obtain the final design of A * 0∼n−1 . Remark 5: The above parametric design of the gain A 0∼n−1 preserves all design degrees of freedom, which come not only from Z , but also from F. In fact, F can be optimized together with Z to improve system performance, while F only needs to satisfy the constraint (57).…”

Section: B Algorithm Of the Observer-based Control Methodsmentioning

confidence: 99%

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Observer-Based Control for High-Order Fully Actuated Systems

Tianyi,

Guangren,

Wanqing

2023

IEEE Access

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An observer-based control method for high-order fully actuated systems is proposed. First, a concept of exponentially stable observers is introduced, which, different from traditional state observers, requires not only asymptotic convergence of observation errors, but also exponential convergence. Further, inspired by existing results, two design methods for exponentially stable observers are developed, one of which is less conservative and the other is simpler and more straightforward to use. Secondly, a parametric control method based on the exponentially stable observer is proposed, which ensures the exponential stability of the closed-loop system. Moreover, the proposed method does not rely on the solution of nonlinear partial differential equations, and although the system is nonlinear and time-varying, the Separation Principle still holds under this control strategy, which is a significant advantage of the proposed method. Finally, the method is applied to the attitude control of flexible spacecraft with nonlinear inertia, and comparative simulation results verify the effect of the proposed approach.INDEX TERMS Observer-based control, nonlinear control, high-order fully actuated systems, exponential stability, flexible spacecraft control.

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Section: Discussionmentioning

confidence: 99%

Section: B Algorithm Of the Observer-based Control Methodsmentioning

confidence: 99%