Zobrazeno 1 - 10
of 93
pro vyhledávání: '"Zhongtao Cheng"'
Publikováno v:
Advances in Aerodynamics, Vol 6, Iss 1, Pp 1-24 (2024)
Abstract For its outstanding aerodynamic capabilities, the integrated design of the waverider and inlet is widely accepted in hypersonic aircraft. Three aspects of the integrated design of the waverider and inlet since 2020 are mainly described in th
Externí odkaz:
https://doaj.org/article/2928c65bad6c46c2a366c0ca477c8532
Autor:
Zhongtao Cheng, Lihong V. Wang
Publikováno v:
Light: Science & Applications, Vol 10, Iss 1, Pp 1-12 (2021)
A wavefront shaping technique with ultrasound-induced optical field perturbation is demonstrated, which provides an efficient and flexible mechanism to implement noninvasive and addressable optical focusing into scattering media.
Externí odkaz:
https://doaj.org/article/f937492ba1684c238298836ab26ff64f
Publikováno v:
Mathematics, Vol 11, Iss 9, p 2160 (2023)
To deal with the uncertainty and disturbance that exist in the tracking system of an aerospace vehicle, an adaptive trajectory-tracking method based on a novel tracking model predictive static programming (T-MPSP) is proposed. Firstly, to make the pr
Externí odkaz:
https://doaj.org/article/e275d9cd4d2c443ba0247b60ea735143
Publikováno v:
Mathematics, Vol 11, Iss 9, p 2090 (2023)
In this paper, a new fixed-time convergence guidance law is proposed against maneuvering targets in the three-dimensional (3-D) engagement scenario. The fixed-time stability theory is used to zero the line-of-sight (LOS) angle rate, which will ensure
Externí odkaz:
https://doaj.org/article/edeb89d1711b46ca8114b9a37564e104
Publikováno v:
International Journal of Aerospace Engineering, Vol 2022 (2022)
For the vertical landing process of reusable rockets, the landing accuracy is likely to be affected by disturbances and faults during flight. In this paper, a fault-tolerant guidance method based on the MPC framework is put forward. First, we propose
Externí odkaz:
https://doaj.org/article/a3379c29dfc04a728b30ec677682a26c
Publikováno v:
IEEE Access, Vol 7, Pp 184353-184364 (2019)
The thrust loss fault of the space launch vehicle is quite different from that of ordinary actuator efficiency loss. Focusing on the attitude tracking control problem of the launch vehicle with thrust loss fault, the special impacts of that fault on
Externí odkaz:
https://doaj.org/article/9f7f1b39ae5b46c4805b7b9bfae67d4f
Publikováno v:
IEEE Access, Vol 7, Pp 104210-104217 (2019)
Considering the velocity of the missile cannot remain constant in most applications due to the effect of aerodynamic drag and thrust, a feasible adaptive impact angle control guidance law under varying velocity is proposed. The design of the guidance
Externí odkaz:
https://doaj.org/article/ccc8306643214892a4f76637bb093a28
Publikováno v:
Complexity, Vol 2020 (2020)
The existing convergence control guidance laws are designed via the Lyapunov asymptotic stability theory or finite-time stability theory. However, guidance law based on the Lyapunov asymptotic stability theory would lead the states to zero only as ti
Externí odkaz:
https://doaj.org/article/b7c152515f0547a4974b85acce011f73
Publikováno v:
Journal of Advanced Transportation, Vol 2020 (2020)
This paper proposes a consensus-based guidance methodology for multiple air vehicles to arrive at the same spot cooperatively. First, based on the Lyapunov stability theory, a guidance law with only one control parameter is proposed, and the exact ex
Externí odkaz:
https://doaj.org/article/19acab72876f45a6b34bd1b3bbb37dd5
Attitude Control with Auxiliary Structure Based on Adaptive Dynamic Programming for Reentry Vehicles
Publikováno v:
Complexity, Vol 2020 (2020)
This paper presents an attitude control scheme combined with adaptive dynamic programming (ADP) for reentry vehicles with high nonlinearity and disturbances. Firstly, the nonlinear attitude dynamics is divided into inner and outer loops according to
Externí odkaz:
https://doaj.org/article/cea5f9a30c7242d491e340505f0fbcff