Electric thruster position keeping thrust distribution method and system
A technology for electric thrusters and thrust distribution, which is applied to space vehicle propulsion system devices, space vehicle guidance devices, aircraft, etc., can solve the problems of too many times of thruster startup, achieve short startup time, reduce computing resource requirements, The effect of improving the service life
Active Publication Date: 2021-12-03
BEIJING INST OF CONTROL ENG
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[0002]Currently, electric propulsion satellites in orbit at home and abroad either use four electric thrusters for joint position keeping control in east-west and north-south directions, or use two electric thrusters for only North-south positioning control, if the above propulsion method is directly applied to a simple configuration of electric propulsion satellites with dual robotic arms + two thrusters, it has the following disadvantages: the number of times the thrusters are turned on is more, and the life of the thrusters and the fuel consumption of the robotic arm may be reduced. Practical Constraints of Type Vector Adjustment Mechanism
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[0088] In order to make the objectives, technical solutions and advantages of the present invention clearer, the embodiments disclosed in the present invention will be described in further detail below with reference to the accompanying drawings.
[0089] The invention discloses a thrust distribution method for position keeping of electric thrusters, which is a simple-configured method for maintaining thrust distribution of electric propulsion satellites. The analytical method is used to carry out the geosynchronization of electric thrusters under the layout of double mechanical arms and two electric thrusters. Track positions maintain control assignments. First, select the appropriate normal direction of the electric thrusters according to the requirements of the position maintaining drift rate control amount; then, obtain the three-dimensional direction and start-up duration of the two electric thrusters corresponding to the determined normal directions; finally, according to...
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The invention discloses an electric thruster position keeping thrust distribution method and system, and the method comprises the steps: determining the normal pointing gears of two electric thrusters according to the position keeping drift rate control quantity; according to the determined normal direction pointing gears of the two electric thrusters, obtaining the target thrust direction [Xn, Yn, Zn] of the first electric thruster and the starting time [delta]tn through calculation, and obtaining the target thrust direction [Xs, Ys, Zs] of the second electric thruster and the starting time [delta]ts through calculation; calculating to obtain a first theoretical vector adjusting mechanism rotating speed omega n and a second theoretical vector adjusting mechanism rotating speed omega s; and distributing [Xn, Yn, Zn] and [delta] tn to the first electric thruster, [Xs, Ys, Zs] and distributing [delta]ts to the second electric thruster, distributing omega n to the first vector adjusting mechanism, and distributing omega s to the second vector adjusting mechanism. According to the method, the power-on duration and the speed increment of the electric thruster are calculated by adopting a complete analysis method, the actual engineering constraint is fully considered, and the position keeping task requirement of the stationary orbit satellite can be met.
Description
technical field [0001] The invention belongs to the technical field of satellite attitude and orbit control, and in particular relates to a thrust distribution method and system for maintaining the position of an electric thruster. Background technique [0002] At present, the electric propulsion satellites in orbit at home and abroad either use four electric thrusters for joint position control in east-west and north-south directions, or use two electric thrusters for only north-south position control. If the above propulsion methods are directly applied to dual robotic arms + The simple configuration of electric propulsion satellites with two thrusters layout has the following disadvantages: more number of thrusters on, possible practical constraints on thruster life and fuel consumption robotic arm-type vector adjustment mechanisms. [0003] Therefore, it is necessary to design a position-keeping thrust distribution method for electric propulsion satellites with simple co...
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IPC IPC(8): B64G1/24B64G1/40
CPCB64G1/242B64G1/244B64G1/40B64G1/245Y02T90/00
Inventor 马雪郭廷荣韩冬林波耿洁黎飞王建花周中泽文闻孙静李巍刘蕊王玉峰
Owner BEIJING INST OF CONTROL ENG