Uncertain Iterative Optimal Attitude Control Method for Periodic Satellite With Reliability Constraint

Yang, Chen; Fan, Ziyao; Lu, Wanze; Gao, Han

doi:10.1109/taes.2024.3404915

Cited by 39 publications

(1 citation statement)

References 45 publications

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“…The process of annular seam opening and the associated changes in joint contact pressure are directly correlated [ 13 , 14 , 15 ] and are theoretically validated through longitudinal beam-spring calculation models in the literature [ 16 , 17 , 18 ]. Therefore, by multi-point monitoring of annular seam contact pressure, the status of the seam can be obtained and thus the joint opening amounts can be identified, reducing error and uncertainty [ 19 , 20 ]. Such monitoring and identification techniques have not been investigated before.…”

Section: Introductionmentioning

confidence: 99%

Identification of Shield Tunnel Segment Joint Opening Based on Annular Seam Pressure Monitoring

Xu,

Liu,

et al. 2024

Sensors

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Tunnels for subways and railways are a vital part of urban transportation systems, where shield tunneling using assembled segmental linings is the predominant construction approach. With increasing operation time and varying geological conditions, shield tunnels usually develop defects that compromise both structural integrity and operational safety. One common issue is the separation of segment joints that may cause water/mud penetration and corrosion. Existing inspection strategies can only detect openings after their occurrence, which cannot provide early warnings for predictive maintenance. To address this issue, this work proposes a multi-point seam contact pressure monitoring method for joint opening identification. It first derived the theoretical correlation between contact pressure distribution and segment opening; then, a finite element model was established to explore the stress and deformation responses under combined axial and bending loads. Finally, multi-point piezoelectric film sensors were implemented on a scaled segment model to validate the theoretical and numerical analyses. Results indicate that the multi-point monitoring method can effectively identify opening amounts at the segment joints with an average error of 8.8%, confirming the method’s feasibility. These findings support the use of this monitoring technique for early detection and assessment of joint openings in shield tunnels.

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Section: Introductionmentioning

confidence: 99%

Identification of Shield Tunnel Segment Joint Opening Based on Annular Seam Pressure Monitoring

Xu,

Liu,

et al. 2024

Sensors

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A Multiobjective Approach for E‐Commerce Website Structure Optimization

Panicker,

Kumar,

Yadav

2024

Concurrency and Computation

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Complex websites comprise a variety of diverse web entities, which require constant restructuring resonating with the latest trends, shifting consumer expectations and market driven changes. Therefore, designing suitable models to optimally restructure such websites is of paramount importance and must take into consideration several factors about the web entities such as display size, download time, type, location in the page, sales likelihood, discounts, and the ongoing trend. A recent study has taken all these attributes into consideration and designed a model based on the Access Score, Interface Score, and Purchase Score. However, this model suffers from certain drawbacks such as it did not address the underlying cohesiveness between these attributes. Further, it provided a single optimal solution to the adaptive website structure optimization (AWSO) problem and relied on the a priori knowledge of weights. The basis of the new proposed model is that there can be more than one optimal solution to the AWSO problem in the real world. The novel tri‐objective optimization model uses NSGA‐II algorithm to simultaneously optimize the attributes and finds advantageous trade‐off solutions without requiring a priori knowledge of weights. The proposed MO‐AWSONSGA‐II model is shown to outperform the existing model proving it better suited for the AWSO problem.

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Integrated uncertain optimal design strategy for truss configuration and attitude–vibration control in rigid–flexible coupling structure with interval uncertainties

Yang,

Wang,

et al. 2024

Nonlinear Dyn

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Uncertain Iterative Optimal Attitude Control Method for Periodic Satellite With Reliability Constraint

Cited by 39 publications

References 45 publications

Identification of Shield Tunnel Segment Joint Opening Based on Annular Seam Pressure Monitoring

Identification of Shield Tunnel Segment Joint Opening Based on Annular Seam Pressure Monitoring

A Multiobjective Approach for E‐Commerce Website Structure Optimization

Integrated uncertain optimal design strategy for truss configuration and attitude–vibration control in rigid–flexible coupling structure with interval uncertainties

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