Review of advanced guidance and control algorithms for space/aerospace vehicles

Chai, Runqi; Tsourdos, Antonios; Chai, Senchun; Xia, Yuanqing; Chen, C.L. Philip

doi:10.1016/j.paerosci.2021.100696

Cited by 122 publications

(35 citation statements)

References 147 publications

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“…For integrated guidance and control (IGC) systems, the guidance system and inner-loop autopilot are designed simultaneously, taking cross-coupling effects into account. On the other hand, in separated guidance and control (SGC), inner and outer loops are designed separately, with modularity and cross-platform use in mind [13]. Examples of separate guidance algorithms for fixed-wing UAVs include nonlinear guidance laws [14,15], vector-field path following [16,17] and a guidance law based on nested saturations [18].…”

Section: Introduction 1background and Motivationmentioning

confidence: 99%

Geometric Reduced-Attitude Control of Fixed-Wing UAVs

Coates

Fossen

2021

Applied Sciences

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This paper presents nonlinear, singularity-free autopilot designs for multivariable reduced-attitude control of fixed-wing aircraft. To control roll and pitch angles, we employ vector coordinates constrained to the unit two-sphere and that are independent of the yaw/heading angle. The angular velocity projected onto this vector is enforced to satisfy the coordinated-turn equation. We exploit model structure in the design and prove almost global asymptotic stability using Lyapunov-based tools. Slowly-varying aerodynamic disturbances are compensated for using adaptive backstepping. To emphasize the practical application of our result, we also establish the ultimate boundedness of the solutions under a simplified controller that only depends on rough estimates of the control-effectiveness matrix. The controller design can be used with state-of-the-art guidance systems for fixed-wing unmanned aerial vehicles (UAVs) and is implemented in the open-source autopilot ArduPilot for validation through realistic software-in-the-loop (SITL) simulations.

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Section: Introduction 1background and Motivationmentioning

confidence: 99%

Geometric Reduced-Attitude Control of Fixed-Wing UAVs

Coates

Fossen

2021

Applied Sciences

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“…The aerospace industry is highly regulated, making extensive demands on safety, standards, quality and certification. It is important that manufactured parts consistently meet standards on safety and quality (Barshilia, 2021;Chai et al, 2021). If problems occur with parts, then it is vital that the manufacturer can trace back through all the processes and supply chains to identify root causes and ensure such problems do not continue (Mulla et al, 2021).…”

Section: Qualification and Certificationmentioning

confidence: 99%

Additive manufacturing a powerful tool for the aerospace industry

Khorasani¹,

Ghasemi

Rolfe

et al. 2021

RPJ

178

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Purpose Additive manufacturing (AM) offers potential solutions when conventional manufacturing reaches its technological limits. These include a high degree of design freedom, lightweight design, functional integration and rapid prototyping. In this paper, the authors show how AM can be implemented not only for prototyping but also production using different optimization approaches in design including topology optimization, support optimization and selection of part orientation and part consolidation. This paper aims to present how AM can reduce the production cost of complex components such as jet engine air manifold by optimizing the design. This case study also identifies a detailed feasibility analysis of the cost model for an air manifold of an Airbus jet engine using various strategies, such as computer numerical control machining, printing with standard support structures and support optimization. Design/methodology/approach Parameters that affect the production price of the air manifold such as machining, printing (process), feedstock, labor and post-processing costs were calculated and compared to find the best manufacturing strategy. Findings Results showed that AM can solve a range of problems and improve production by customization, rapid prototyping and geometrical freedom. This case study showed that 49%–58% of the cost is related to pre- and post-processing when using laser-based powder bed fusion to produce the air manifold. However, the cost of pre- and post-processing when using machining is 32%–35% of the total production costs. The results of this research can assist successful enterprises, such as aerospace, automotive and medical, in successfully turning toward AM technology. Originality/value Important factors such as validity, feasibility and limitations, pre-processing and monitoring, are discussed to show how a process chain can be controlled and run efficiently. Reproducibility of the process chain is debated to ensure the quality of mass production lines. Post-processing and qualification of the AM parts are also discussed to show how to satisfy the demands on standards (for surface quality and dimensional accuracy), safety, quality and certification. The original contribution of this paper is identifying the main production costs of complex components using both conventional and AM.

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“…Public information shows that the aerospace vehicle navigation system adopts multi-source redundancy configuration scheme to meet its system fault tolerance requirements. Therefore, based on inertial navigation system, according to the environmental characteristics of different flight stages, different types of auxiliary navigation sensors [8] are used to improve the reliability of the navigation system has become the consensus of researchers, such as satellite navigation system [9], celestial navigation system [10], atmospheric altitude measurement system, synthetic aperture radar, and so on [11]. The key of aerospace vehicle navigation system to meet its high-precision and reliable measurement requirements lies in: How to fuse multi-source navigational information that has significant spatiotemporal heterogeneity.…”

Section: Introductionmentioning

confidence: 99%

Resilient Multi-Source Integrated Navigation Method for Aerospace Vehicles Based on On-Line Evaluation of Redundant Information

et al. 2022

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Aerospace vehicle navigation systems are equipped with multi-source redundant navigation sensors. According to the characteristics of the above navigation system configuration, building a resilient navigation framework to improve the accuracy and robustness of the navigation system has become an urgent problem to be solved. In the existing integrated navigation methods, redundant information is only used for backup. So, it cannot use the redundant navigation information to improve the accuracy of the navigation system. In this paper, a resilient multi-source fusion integrated navigation method based on comprehensive information evaluation has been proposed by combining of qualitative analysis and quantitative analysis in information theory. Firstly, this paper proposes a multi-layer evaluation framework of redundant information and carries out quantitative analysis of redundant information with the information disorder analysis theory to improve the reliability of the navigation system. Secondly, a navigation output effectiveness evaluation system has been established to analyze the output of heterogeneous navigation subsystems qualitatively to improve the fusion accuracy. Finally, through the mutual correction of multi-level information evaluation results, the error decoupling between the output parameters of heterogeneous navigation sensors has been realized to improve the robustness of the system. The experimental results show that the method proposed in this paper can adaptively allocate and adjust the weight of navigation information at all levels, realize the “non-stop” work of the navigation system and enhance the resilient of the navigation architecture. The navigation accuracy is improved compared with the existing multi-source fusion algorithm, which reflects the reliability and robustness of this algorithm.

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Review of advanced guidance and control algorithms for space/aerospace vehicles

Cited by 122 publications

References 147 publications

Geometric Reduced-Attitude Control of Fixed-Wing UAVs

Geometric Reduced-Attitude Control of Fixed-Wing UAVs

Additive manufacturing a powerful tool for the aerospace industry

Resilient Multi-Source Integrated Navigation Method for Aerospace Vehicles Based on On-Line Evaluation of Redundant Information

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