Variable-Time-Domain Online Neighboring Optimal Trajectory Modification for Hypersonic Interceptors

المؤلفون المشاركون

Lei, Humin
Li, Ningbo
Zhou, Jin
Shao, Lei
Wang, Bin

المصدر

International Journal of Aerospace Engineering

العدد

المجلد 2017، العدد 2017 (31 ديسمبر/كانون الأول 2017)، ص ص. 1-12، 12ص.

الناشر

Hindawi Publishing Corporation

تاريخ النشر

2017-07-12

دولة النشر

مصر

عدد الصفحات

12

الملخص EN

The predicted impact point (PIP) of hypersonic interception changes continually; therefore the midcourse guidance law must have the ability of online trajectory optimization.

In this paper, an online trajectory generation algorithm is designed based on neighboring optimal control (NOC) theory and improved indirect Radau pseudospectral method (IRPM).

A trajectory optimization model is designed according to the features of operations in near space.

Two-point boundary value problems (TPBVPs) are obtained based on NOC theory.

The second-order linear form of transversality conditions is deduced backward to express the modifications of terminal states, costates, and flight time in terms of current state errors and terminal constraints modifications.

By treating the current states and the optimal costates modifications as initial constraints and perturbations, the feedback control variables are obtained based on improved IRPM and nominal trajectory information.

The simulation results show that when the changes of terminal constraints are not relatively large, this method can generate a modified trajectory effectively with high precision of terminal modifications.

The design concept can provide a reference for the design of the online trajectory generation system of hypersonic vehicles.

نمط استشهاد جمعية علماء النفس الأمريكية (APA)

Li, Ningbo& Lei, Humin& Zhou, Jin& Shao, Lei& Wang, Bin. 2017. Variable-Time-Domain Online Neighboring Optimal Trajectory Modification for Hypersonic Interceptors. International Journal of Aerospace Engineering،Vol. 2017, no. 2017, pp.1-12.
https://search.emarefa.net/detail/BIM-1158240

نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)

Li, Ningbo…[et al.]. Variable-Time-Domain Online Neighboring Optimal Trajectory Modification for Hypersonic Interceptors. International Journal of Aerospace Engineering No. 2017 (2017), pp.1-12.
https://search.emarefa.net/detail/BIM-1158240

نمط استشهاد الجمعية الطبية الأمريكية (AMA)

Li, Ningbo& Lei, Humin& Zhou, Jin& Shao, Lei& Wang, Bin. Variable-Time-Domain Online Neighboring Optimal Trajectory Modification for Hypersonic Interceptors. International Journal of Aerospace Engineering. 2017. Vol. 2017, no. 2017, pp.1-12.
https://search.emarefa.net/detail/BIM-1158240

نوع البيانات

مقالات

لغة النص

الإنجليزية

الملاحظات

Includes bibliographical references

رقم السجل

BIM-1158240