TY - GEN
T1 - Low thrust gravity assist trajectory optimization based on hybrid method
AU - Zhao, Zunhui
AU - Shang, Haibin
AU - Cui, Pingyuan
AU - Huang, Xiangyu
PY - 2012
Y1 - 2012
N2 - The application and advantage of low thrust propulsion system has been validated in practical mission launch even though the trajectory design difficulty is increased. The trajectory optimization problem brought by the use of low thrust propulsion in conjunction with gravity assist is researched. This paper proposes a hybrid technique for solving the strong nonlinear and multiple constraints optimal control problem using a hybrid technique. First, a nonlinear programming problem is proposed by abandoning the terminal constraints brought by Pontryagin maximum principle and treating costates as optimization variables; Then an adjoint control transformation is used for converting costate variables to other variables partially which possess actual bounds and physical meaning; Finally, differential evolution algorithm is employed for searching the initial values of nonlinear programming problem for local accurate optimization. Related low thrust gravity assist trajectories to outer planets by various gravity assists are designed for demonstrating the effectiveness of the proposed hybrid technique.
AB - The application and advantage of low thrust propulsion system has been validated in practical mission launch even though the trajectory design difficulty is increased. The trajectory optimization problem brought by the use of low thrust propulsion in conjunction with gravity assist is researched. This paper proposes a hybrid technique for solving the strong nonlinear and multiple constraints optimal control problem using a hybrid technique. First, a nonlinear programming problem is proposed by abandoning the terminal constraints brought by Pontryagin maximum principle and treating costates as optimization variables; Then an adjoint control transformation is used for converting costate variables to other variables partially which possess actual bounds and physical meaning; Finally, differential evolution algorithm is employed for searching the initial values of nonlinear programming problem for local accurate optimization. Related low thrust gravity assist trajectories to outer planets by various gravity assists are designed for demonstrating the effectiveness of the proposed hybrid technique.
UR - http://www.scopus.com/inward/record.url?scp=84874619668&partnerID=8YFLogxK
U2 - 10.1109/ICACI.2012.6463302
DO - 10.1109/ICACI.2012.6463302
M3 - Conference contribution
AN - SCOPUS:84874619668
SN - 9781467317436
T3 - 2012 IEEE 5th International Conference on Advanced Computational Intelligence, ICACI 2012
SP - 903
EP - 908
BT - 2012 IEEE 5th International Conference on Advanced Computational Intelligence, ICACI 2012
T2 - 2012 IEEE 5th International Conference on Advanced Computational Intelligence, ICACI 2012
Y2 - 18 October 2012 through 20 October 2012
ER -