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- W3035524577 abstract "This paper attempts to study the effects of control parameters errors and launching attitude errors on the motion of an underwater glider, and these errors are collectively called as input errors. The dynamics model of the underwater glider is established. To simplify the quantitative characterization of motion deviation, an evaluation parameter which can simultaneously characterize the path deviation and velocity deviation is proposed. On these bases, the motion deviations of the glider are quantitatively analyzed under two kinds of input errors. The control parameters errors include the net buoyancy adjustment amount error, the movable internal mass block translation amount error and the movable internal mass block rotation amount error. The launching attitude errors include the roll angle error, the yaw angle error and the pitch angle error. Then, an optimized response surface methodology (ORSM) is proposed to obtain the approximate function expressions between the input errors and the evaluation parameter of motion deviation. In the ORSM, the multi-island genetic algorithm (MIGA) is used to identify the key terms of polynomial. And the approximate function expressions are fitted by the polynomials including only the key terms, which can effectively weaken the polynomial wiggle. After that, the sensitivity analysis of input errors to motion deviations is achieved based on the above approximate function expressions. The results indicate that all control parameters errors and the yaw angle error should be small enough to avoid unacceptable motion deviations. In addition, the coexistence of particular input errors can offset motion deviations partially. The research results provide significant guidance for the accuracy design of underwater glider." @default.
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- W3035524577 date "2020-08-01" @default.
- W3035524577 modified "2023-09-27" @default.
- W3035524577 title "Sensitivity analysis of input errors to motion deviations of underwater glider based on optimized response surface methodology" @default.
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- W3035524577 doi "https://doi.org/10.1016/j.oceaneng.2020.107400" @default.
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