Statistics – Computation
Scientific paper
Jan 2012
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012adspr..49..150y&link_type=abstract
Advances in Space Research, Volume 49, Issue 1, p. 150-161.
Statistics
Computation
Scientific paper
In this paper, a field-of-view constrained guidance algorithm for -V-bar constant thrust departure under thruster failure is investigated. First of all, the relative position parameters of the chaser are obtained by using the vision measurement and the target departure manoeuvres positions are calculated through the isochronous interpolation method. Then, a new switching control law under constant thrust is designed for the departure manoeuvres. The switching control law is obtained based on the acceleration sequences and the on time of thrusters which can be computed by the time series analysis method. The perturbations and fuel consumptions are addressed during the computation of the on time of thrusters. With the switching control law, the constant thrust-V-bar departure under the thruster failure in the x-axis is carried out by using coupling effects.On the basis of the toolbox of matlab, practical examples for simulation and application are given. The half cone angle of the cone-shaped field-of-view of the target spacecraft is α = 30°, the simulation results show that the proposed guidance algorithm can well satisfy the conditions for the constraints and can make sure the chaser departures from the target spacecraft safely.
Yingmin Jia
Yongqiang Qi
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