Flight optimisation of missile using linear matrix inequality (LMI) approach

Majumder, Samarpan Deb

doi:10.1049/joe.2019.0952

Cited by 2 publications

(1 citation statement)

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“…In general, this loop shaping method has been used for motion control systems [20][21][22][23][24][25][26][27][28][29][30][31][32] including commercial Hard Disk Drives [33]. In addition, for DO design, this approach was used [34][35][36]. Here, note that, to achieve the special objects, the cost function, setup, must be carefully designed, and sometimes the design framework must be redesigned because the goal may not be achievable by using existing control blocks.…”

Section: Introductionmentioning

confidence: 99%

Optimal Disturbance Observer Design for High Tracking Performance in Motion Control Systems

Kim

Suh

2020

Mathematics

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In this paper, a stability-driven optimal disturbance observer (DO) is proposed. The proposed method does not require any plant inverse dynamics to detect introduced disturbances or a stabilizing Q filter. It does not require additional compensators to resolve causality problems, due to the relative degree, or filters to solve instability problems of non-minimum phase plants. Using this method enables wideband and narrowband disturbances to be attenuated by simply multiplying the corresponding peak filters by the baseline weight function. Furthermore, the proposed DO guarantees the stability of closed-loop systems because the already designed outer-loop systems are considered as a target plant to be stabilized and because of the Lyapunov stability-based H∞ control. In the application example, it was confirmed that the proposed method is effective, and the position error signals were improved by 20.9% in commercial hard disk drives and 36.6% in optical image stabilization systems.

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