Influence of Steering Angle Profiles on the Orbit Transfer Trajectory

This paper considers a planar orbit transfer trajectory design problem using finite thrust modeling. In this problem, the steering angles associated with the thrust direction are calculated from the predetermined profile format, and the unknown parameters in the profile are directly optimized. Three profile formats that were implemented in previous lunar exploration missions are considered. In addition, a steering angle profile defined in the rotating frame and the optimal steering angle profile are newly studied to compare the performances. To this end, the direct parameter optimization problem and the indirect optimization problem are formulated, and the characteristics of the steering angle profile and its influence on the transfer trajectory are analyzed.

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Halo orbit transfer trajectory design using invariant manifold in the Sun-Earth system accounting radiation pressure and oblateness

Astrophysics and Space Science ◽

10.1007/s10509-017-3235-4 ◽

2017 ◽

Vol 363 (1) ◽

Cited By ~ 2

Author(s):

Vineet K. Srivastava ◽

Jai Kumar ◽

Badam Singh Kushvah

Keyword(s):

Invariant Manifold ◽

Radiation Pressure ◽

Halo Orbit ◽

Trajectory Design ◽

The Sun ◽

Earth System ◽

Orbit Transfer ◽

Transfer Trajectory

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A Parametric Study on Optimal Earth-Moon Transfer Trajectory Design Using Mixed Impulsive and Continuous Thrust

Journal of the Korean Society for Aeronautical & Space Sciences ◽

10.5139/jksas.2011.39.11.1021 ◽

2011 ◽

Vol 39 (11) ◽

pp. 1021-1032

Author(s):

Dae-Ro Lee ◽

Tae-Soo No ◽

Ji-Marn Lee ◽

Gyeong-Eon Jeon

Keyword(s):

Parametric Study ◽

Trajectory Design ◽

Transfer Trajectory

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Optimal Earth-Moon Transfer Trajectory Design via Differential Dynamic Programming with Input Saturation Constraints

TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES AEROSPACE TECHNOLOGY JAPAN ◽

10.2322/tastj.19.766 ◽

2021 ◽

Vol 19 (5) ◽

pp. 766-773

Author(s):

Masakazu IWABUCHI ◽

Satoshi SATOH ◽

Katsuhiko YAMADA

Keyword(s):

Dynamic Programming ◽

Input Saturation ◽

Trajectory Design ◽

Differential Dynamic Programming ◽

Transfer Trajectory ◽

Saturation Constraints ◽

Input Saturation Constraints

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A trajectory design method for RLV via artificialmemory-principle optimization

MATEC Web of Conferences ◽

10.1051/matecconf/201818910019 ◽

2018 ◽

Vol 189 ◽

pp. 10019

Author(s):

Hao Li ◽

Changzhu Wei

Keyword(s):

Trajectory Optimization ◽

Optimization Problem ◽

Optimization Problems ◽

Memory Cell ◽

Optimization Method ◽

Alternative Solution ◽

Trajectory Design ◽

Memory State ◽

Artificial Memory

A trajectory optimization method for RLV based on artificial memory principles is proposed. Firstly the optimization problem is modelled in Euclidean space. Then in order to solve the complicated optimization problem of RLV in entry phase, Artificial-memory-principle optimization (AMPO) is introduced. AMPO is inspired by memory principles, in which a memory cell consists the whole information of an alternative solution. The information includes solution state and memory state. The former is an evolutional alternative solution, the latter indicates the state type of memory cell: temporary, short-and long-term. In the evolution of optimization, AMPO makes a various search (stimulus) to ensure adaptability, if the stimulus is good, memory state will turn temporary to short-term, even long-term, otherwise it not. Finally, simulation of different methods is carried out respectively. Results show that the method based on AMPO has better performance and high convergence speed when solving complicated optimization problems of RLV.

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UAV-enabled multiuser wireless power transfer: Trajectory design and energy optimization

2017 23rd Asia-Pacific Conference on Communications (APCC) ◽

10.23919/apcc.2017.8304077 ◽

2017 ◽

Cited By ~ 20

Author(s):

Jie Xu ◽

Yong Zeng ◽

Rui Zhang

Keyword(s):

Energy Optimization ◽

Wireless Power Transfer ◽

Trajectory Design ◽

Power Transfer ◽

Wireless Power ◽

Transfer Trajectory

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Finite-Thrust Trajectory Optimal of Earth Orbit Transfer with J2 Perturbation Considered by Homotopic Approach

2018 IEEE CSAA Guidance, Navigation and Control Conference (CGNCC) ◽

10.1109/gncc42960.2018.9019207 ◽

2018 ◽

Author(s):

Huang An-yi ◽

Zhang Zhi-bin ◽

Li Heng-nian

Keyword(s):

Earth Orbit ◽

Orbit Transfer ◽

J2 Perturbation ◽

Finite Thrust

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Locomotor Development Prediction Based on Statistical Model Parameters Identification

Computational and Mathematical Methods in Medicine ◽

10.1155/2012/548208 ◽

2012 ◽

Vol 2012 ◽

pp. 1-5

Author(s):

A. V. Wildemann ◽

A. A. Tashkinov ◽

V. A. Bronnikov

Keyword(s):

Optimization Problem ◽

Real Data ◽

Parameters Identification ◽

Model Parameters ◽

Large Set ◽

Constrained Optimization Problem ◽

Unknown Parameters ◽

Locomotor Development ◽

Feasible Solutions ◽

The Individual

This paper introduces an approach for parameters identification of a statistical predicting model with the use of the available individual data. Unknown parameters are separated into two groups: the ones specifying the average trend over large set of individuals and the ones describing the details of a concrete person. In order to calculate the vector of unknown parameters, a multidimensional constrained optimization problem is solved minimizing the discrepancy between real data and the model prediction over the set of feasible solutions. Both the individual retrospective data and factors influencing the individual dynamics are taken into account. The application of the method for predicting the movement of a patient with congenital motility disorders is considered.

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