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1. US20210403183 - Abort-Safe Vehicle Rendezvous in Case of Partial Control Failure

Office
United States of America
Application Number 16914386
Application Date 28.06.2020
Publication Number 20210403183
Publication Date 30.12.2021
Publication Kind A1
IPC
B64G 1/64
BPERFORMING OPERATIONS; TRANSPORTING
64AIRCRAFT; AVIATION; COSMONAUTICS
GCOSMONAUTICS; VEHICLES OR EQUIPMENT THEREFOR
1Cosmonautic vehicles
22Parts of, or equipment specially adapted for fitting in or to, cosmonautic vehicles
64Systems for coupling or separating cosmonautic vehicles or parts thereof, e.g. docking arrangements
B64G 1/24
BPERFORMING OPERATIONS; TRANSPORTING
64AIRCRAFT; AVIATION; COSMONAUTICS
GCOSMONAUTICS; VEHICLES OR EQUIPMENT THEREFOR
1Cosmonautic vehicles
22Parts of, or equipment specially adapted for fitting in or to, cosmonautic vehicles
24Guiding or controlling apparatus, e.g. for attitude control
B64G 1/52
BPERFORMING OPERATIONS; TRANSPORTING
64AIRCRAFT; AVIATION; COSMONAUTICS
GCOSMONAUTICS; VEHICLES OR EQUIPMENT THEREFOR
1Cosmonautic vehicles
22Parts of, or equipment specially adapted for fitting in or to, cosmonautic vehicles
52Protection, safety or emergency devices; Survival aids
CPC
B64G 1/52
BPERFORMING OPERATIONS; TRANSPORTING
64AIRCRAFT; AVIATION; COSMONAUTICS
GCOSMONAUTICS; VEHICLES OR EQUIPMENT THEREFOR
1Cosmonautic vehicles
22Parts of, or equipment specially adapted for fitting in or to, cosmonautic vehicles
52Protection, safety or emergency devices; Survival aids
B64G 1/646
BPERFORMING OPERATIONS; TRANSPORTING
64AIRCRAFT; AVIATION; COSMONAUTICS
GCOSMONAUTICS; VEHICLES OR EQUIPMENT THEREFOR
1Cosmonautic vehicles
22Parts of, or equipment specially adapted for fitting in or to, cosmonautic vehicles
64Systems for coupling or separating cosmonautic vehicles or parts thereof, e.g. docking arrangements
646Docking or rendez-vous systems
B64G 1/242
BPERFORMING OPERATIONS; TRANSPORTING
64AIRCRAFT; AVIATION; COSMONAUTICS
GCOSMONAUTICS; VEHICLES OR EQUIPMENT THEREFOR
1Cosmonautic vehicles
22Parts of, or equipment specially adapted for fitting in or to, cosmonautic vehicles
24Guiding or controlling apparatus, e.g. for attitude control
242Orbits and trajectories
Applicants Mitsubishi Electric Research Laboratories, Inc.
Inventors Avishai Weiss
Stefano Di Cairano Di Cairano
Daniel Aguilar Marsillach
Uros Kalabic
Title
(EN) Abort-Safe Vehicle Rendezvous in Case of Partial Control Failure
Abstract
(EN)

Systems and methods controlling an operation of a vehicle in real time to rendezvous the vehicle with a target over a finite time horizon having multiple specified time periods. Select a set of unsafe regions from stored unsafe regions, the set of unsafe regions represents regions of space around the target in which any operation of the PSNO thrusters does not avoid collision with the target, guaranteeing collision trajectories with the target. Formulating the set of unsafe regions as safety constraints, and updating a controller having a model of dynamics of the vehicle with the accepted data. Generating control commands by subjecting the updated controller to the safety constraints to produce a rendezvous trajectory that avoids the set of unsafe regions, guaranteeing an operation of at least the PSNO thrusters, in the event of partial vehicle thruster failure results in a trajectory that does not collide with the target.


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