JPH0162198U

JPH0162198U -

Info

Publication number: JPH0162198U
Application number: JP15831087U
Authority: JP
Priority date: 1987-10-16
Filing date: 1987-10-16
Publication date: 1989-04-20

Description

[Brief explanation of the drawing]

第１図はこの考案の一実施例を示す構成図、第
２図はこの考案による人工衛星に等価的に作用す
る合トルクの発生を説明した図、第３図は従来の
ガスジエツトを用いた姿勢制御装置を示す図であ
る。図において、１ａ，１ｂは正及び負のトルクを
発生するガスジエツト、２ａ，２ｂは正及び負の
スレツシヨルド検出器、３，３ａ，３ｂはそれぞ
れ独立なパルス発生器、４ａ，４ｂ，４ｃ，４ｄ
はＡＮＤ回路、５は人工衛星の姿勢角、６ａ，６
ｂは正及び負のスレツシヨルド検出信号、７，７
ａ，７ｂは前記パルス発生器のパルス信号、８ａ
，８ｂは正及び負のガスジエツト制御信号、９は
前記パルス信号７のパルスオン時間、１０ａ，１
０ｂはＯＲ回路、１１ａ，１１ｂは正及び負のガ
スジエツトトルク、１２はガスジエツトの合トル
ク、１３は時間軸、１４はガスジエツト装置の最
小オンタイムパルス軸である。なお、各図中同一
符号は同一または相当部分を示す。 Figure 1 is a configuration diagram showing an embodiment of this invention, Figure 2 is a diagram explaining the generation of a total torque that equivalently acts on an artificial satellite according to this invention, and Figure 3 is a diagram showing the attitude using a conventional gas jet. It is a figure showing a control device. In the figure, 1a and 1b are gas jets that generate positive and negative torques, 2a and 2b are positive and negative threshold detectors, 3, 3a, and 3b are independent pulse generators, and 4a, 4b, 4c, and 4d.
is an AND circuit, 5 is the attitude angle of the satellite, 6a, 6
b are positive and negative threshold detection signals, 7,7
a, 7b are pulse signals of the pulse generator, 8a
, 8b are positive and negative gas jet control signals, 9 is the pulse-on time of the pulse signal 7, 10a, 1
0b is an OR circuit, 11a and 11b are positive and negative gas jet torques, 12 is the combined torque of the gas jets, 13 is a time axis, and 14 is the minimum on-time pulse axis of the gas jet device. Note that the same reference numerals in each figure indicate the same or corresponding parts.

Claims

[Scope of utility model registration request]

at least one set of gas jets that generate positive and negative torques necessary for attitude control of the satellite;
For this gas jet, at least one set of threshold detectors for the attitude angle of the satellite, which determine whether the control side is positive or negative, and a pulse generator that generates pulse trains of two types of pulse widths; , an AND/OR circuit that combines the signal from the previous threshold detector, and this AND/OR circuit.
In the device shown above that turns on the gas jet based on the gas jet control signal processed by the OR circuit, the attitude control resolution of the gas jet can be improved by turning on the gas jet on the control side and simultaneously turning on one of the gas jets in the pair. An artificial satellite attitude control device characterized by improving the