JPS6273822A - Controller for despun platform - Google Patents

Controller for despun platform

Info

Publication number
JPS6273822A
JPS6273822A JP60212425A JP21242585A JPS6273822A JP S6273822 A JPS6273822 A JP S6273822A JP 60212425 A JP60212425 A JP 60212425A JP 21242585 A JP21242585 A JP 21242585A JP S6273822 A JPS6273822 A JP S6273822A
Authority
JP
Japan
Prior art keywords
time
data
despan
satellite
pointing direction
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP60212425A
Other languages
Japanese (ja)
Inventor
Toshiyuki Tanaka
俊之 田中
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP60212425A priority Critical patent/JPS6273822A/en
Publication of JPS6273822A publication Critical patent/JPS6273822A/en
Pending legal-status Critical Current

Links

Landscapes

  • Control Of Position, Course, Altitude, Or Attitude Of Moving Bodies (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Radio Relay Systems (AREA)

Abstract

PURPOSE:To attain complicated direction control with high accuracy by using a comparatively less data quantity by approximating the directional line at each prescribed time by an equation of time including an optional coefficient, sending the coefficient data to a satellite and storing it and applying operation control to the directional line at each time by means of a microprocessor provided on the satellite. CONSTITUTION:The coefficient data in equation of time indicating the directional line sent from an earth station is received by a receiver 3, the received data is subject to prescribed processing such as A/D conversion by the receiver 3 and the result is written in a RAM 3 being a random access memory. Further, a processing program to operate the directional line of a despun platform 8 is stored in a ROM 4 being a read only memory. The RAM 2 and the ROM 4 are connected to the microprocessor 1 through respective bus lines 9. Further, a timer 5 is to apply time management controlling the despun platform 8, and sends a prescribed signal relating to the time data to the microprocessor 1 via the bus line 9.

Description

【発明の詳細な説明】 〔発明の利用分野〕 本発明はデュアルスピン衛星に搭載されるデスパンプラ
ットフォームの制御装置に係り、特に指向方向を時刻と
共KW化させる必要がある場合に好適なデスパンプラン
トフオームの制御装置に関する。
[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to a control device for a despan platform mounted on a dual-spin satellite, and is particularly suitable for controlling a despan platform installed in a dual-spin satellite, particularly when it is necessary to make the pointing direction and time KW. The present invention relates to a control device for a pan plant form.

〔発明の背景〕[Background of the invention]

デュアルスピン衛星に搭載されるデスパンプラントフオ
ームには、例えばアンテナ等の機器が配設されている。
The despan plant form mounted on the dual spin satellite is equipped with equipment such as an antenna.

これらの機器を特定の目標に指向させ続ける為には、衛
星の運動に伴ないデスパンプラットフォームの指向方向
を時刻とともに変化させる必要がある。
In order to continue pointing these devices at a specific target, it is necessary to change the pointing direction of the despan platform over time as the satellite moves.

従来、このようなデスパンプラットフォーム用制御とし
ては、例えば林地によるl’−PLANET−Aのデス
パンアンテナ制御装置」(科学衛星シンポジウム昭和5
7年度論文集、251〜260頁)が知られている。こ
れは、任意の方向へのアンテナのボインティングは地上
局よりコマンドによって設定されたα角(太陽−衛星−
地球の成す角)とアンテナ角βとを比較し、α−βとな
るように制御するものである。また、初期の指向角から
衛星上のタイマにより指向角を一定の割合で変化させる
ことも提案している。
Conventionally, as a control for such a despan platform, for example, a despan antenna control device for l'-PLANET-A by Hayashi (Scientific Satellite Symposium 1930) was proposed.
7th year collection of papers, pp. 251-260). This means that antenna pointing in any direction is performed at an α angle (sun-satellite-
The angle formed by the earth) is compared with the antenna angle β, and the antenna angle is controlled to be α-β. It is also proposed to change the pointing angle at a constant rate from the initial pointing angle using a timer on the satellite.

しかし、このような制御装置では、衛星が地上局から見
て地球の陰に入ったときには地上局と交信できず制御不
可能になるという問題点があった。
However, such a control device has a problem in that when the satellite enters the shadow of the earth as seen from the ground station, it cannot communicate with the ground station and cannot be controlled.

また、指向方向を一定の割合でなく複雑に変化させるこ
ともできなかった。そこで、地上中に衛星が来て交信可
能な時K、一定時量分の指向方向のデータをまとめて伝
送し、衛星上のメモリに記憶させておき、交信不能な間
はこのデータにより指向方向の制御を行なうことが考え
られる。
Furthermore, it was not possible to change the pointing direction in a complicated manner rather than at a constant rate. Therefore, when a satellite is on the ground and communication is possible, a certain amount of time's worth of pointing direction data is transmitted all at once and stored in the memory on the satellite, and while communication is unavailable, this data is used to It is conceivable to control the

ところが、一般に数時間から1日近くまでおよぶ交信不
能期間の全指向角データをそのまま伝送し記憶させたの
では、データ量が膨大となり、メモリ容量も大きくする
必要が生じ、重量・消費電力等の面で問題があった。
However, in general, if omnidirectional angle data from a period of communication failure that lasts from several hours to nearly a day is transmitted and stored as is, the amount of data will be enormous, the memory capacity will also need to be increased, and weight, power consumption, etc. will be reduced. There was a problem with the surface.

〔発明の目的〕[Purpose of the invention]

本発明の目的は、時刻とともに指向方向を変化させる必
要のあるデスパンプラットフォームの制御装装置におい
て、比較的少ないメモリ容量で、衛星上での相同精度の
良いデスパンプラットフォームの制御装置を提供するこ
とにある。
An object of the present invention is to provide a control device for a despan platform that requires a relatively small memory capacity and has good homology accuracy on a satellite in a despan platform control device that needs to change the pointing direction with time. It is in.

〔発明の概要〕[Summary of the invention]

本発明においては上記した目的を達成するために、一定
時間ごとの指向方向を任意の係数を含む時刻の式で近似
させ、その係数データを地上局より衛星に伝送して記憶
させ、衛星上に設けたマイクロプロセッサによυ各時刻
の指向方向を演算制御するようにしたデスパンプラット
フォームの制御装置を提供する。
In order to achieve the above-mentioned object, the present invention approximates the pointing direction at fixed time intervals using a time expression including arbitrary coefficients, transmits the coefficient data from the ground station to the satellite, stores it, and stores it on the satellite. A control device for a despan platform is provided in which the pointing direction at each time υ is calculated and controlled by a microprocessor provided therein.

〔発明の実施例〕[Embodiments of the invention]

以下、本発明の一実施例を第1図および第2図により説
明する。
An embodiment of the present invention will be described below with reference to FIGS. 1 and 2.

地上局から伝送された指向方向を示す時刻の式の係数デ
ータは、受信装#3で受信される。受信したデータは受
信装置3でA/D変換等一定の処理の後、ランダムアク
セスメモリであるRAM2に書き込まれる。さらに、読
み出し専用メモリであるROM4には、デスパンプラッ
トフォーム8の指向方向を演算するための処理プログラ
ムが記憶させである0これらRAM2とROM4はそれ
ぞれパスライン9を通してマイクロプロセッサ1に接続
している。また、タイマ5はデスパンプラットフォーム
8を制御するための時間管理を行なうものであり、パス
ライン9を経由して時刻データに関する所定の信号をマ
イクロプロセッサ1に送出する。
The coefficient data of the time expression indicating the pointing direction transmitted from the ground station is received by receiver #3. The received data is subjected to certain processing such as A/D conversion in the receiving device 3, and then written to the RAM 2, which is a random access memory. Further, the ROM 4, which is a read-only memory, stores a processing program for calculating the pointing direction of the despan platform 8.The RAM 2 and ROM 4 are connected to the microprocessor 1 through a path line 9, respectively. Further, the timer 5 performs time management for controlling the despan platform 8, and sends a predetermined signal regarding time data to the microprocessor 1 via the path line 9.

マイクロプロセッサ1はROM4に記憶された処理プロ
グラムにしたがって動作し、タイマ5の示す時刻とRA
M2に記憶されている係数データから、時々刻々の指向
方向を演算し、指向方向を示すデータを指向方向記憶部
乙に設定する。指向方向データは指向方向記憶部6から
デスパンプラットフォーム制御回路7に送出され、デス
パンプラットフォーム制御回路7はそのデータにより、
デスパンプラントフオーム8の指向方向の制御を行なう
The microprocessor 1 operates according to the processing program stored in the ROM 4, and uses the time indicated by the timer 5 and the RA.
A momentary pointing direction is calculated from the coefficient data stored in M2, and data indicating the pointing direction is set in the pointing direction storage section B. The pointing direction data is sent from the pointing direction storage section 6 to the despan platform control circuit 7, and the despan platform control circuit 7 uses the data to
The orientation direction of the despan plant form 8 is controlled.

一定時間ごとの指向方向を近似させる時刻の式としては
、種々前えうるが、例えば、指向方向θ。
There are various time expressions that can be used to approximate the pointing direction at regular intervals; for example, the pointing direction θ.

が時刻tの3次式で表わされる場合を例にとる。Let us take as an example the case where is expressed by a cubic equation at time t.

即ち、指向方向θ、が θ* =ai t + bkt + Qkt + dk
で表わされる時、これら係数値の組(a、 l b、 
T a、。
That is, the pointing direction θ is θ* = ait + bkt + Qkt + dk
When expressed as a set of coefficient values (a, l b,
T a.

d、)〜(a、、l bn” n ’ cln)がまと
めて地上局より伝送され、RAM2に記憶される。
d,) to (a,,l bn''n'cln) are collectively transmitted from the ground station and stored in the RAM2.

次に、第2図に示すフローチャートにしたがいマイクロ
プロセッサ1の処理を説明する。
Next, the processing of the microprocessor 1 will be explained according to the flowchart shown in FIG.

まず、係数更新時刻に至るまでの間は、係数データ(a
、 、b、 、c、 、d、 )に基づき時刻を示すタ
イマ値tから指向方向θ、を時々刻々演算する。そして
θ。
First, until the coefficient update time is reached, the coefficient data (a
, , b, , c, , d, ), the pointing direction θ is calculated from the timer value t indicating the time. and θ.

は指向方向記憶部6に設定される。タイマ5が係数更新
時刻を示すと、係数の組は(a2.b2.02.ds)
に更新され、以降これにより指向方向θ、を算出する。
is set in the pointing direction storage section 6. When timer 5 indicates the coefficient update time, the set of coefficients is (a2.b2.02.ds)
The pointing direction θ is then calculated based on this update.

このようにして係数更新時刻になる毎に係数の組(% 
+ bkt Qy 、 dk)を更新し、その係数値を
用いて指向方向θ、を演算して指向方向記憶部6に設定
する。デスパンプラットフォーム制御回路7は、このθ
、の値にしたがって時刻とともに変化するデスパンプラ
ットフォーム8の指向方向を制御する。
In this way, each time the coefficient update time comes, the set of coefficients (%
+ bkt Qy, dk) is updated, and the pointing direction θ is calculated using the coefficient value and set in the pointing direction storage section 6. The despan platform control circuit 7 controls this θ
The pointing direction of the despan platform 8, which changes with time, is controlled according to the value of .

上記の例では、指向方向を時刻tの3次式で近似させた
が、指向方向の変化の複雑さ、要求される指向精度等か
ら適当な次数の式を選択することが可能である。1だ、
係数値更新の時間間隔も必要に応じて決定することがで
きる。
In the above example, the pointing direction is approximated by a cubic equation at time t, but it is possible to select an equation of an appropriate order depending on the complexity of the change in pointing direction, the required pointing accuracy, etc. It's 1.
The time interval for updating coefficient values can also be determined as necessary.

〔発明の効果〕〔Effect of the invention〕

本発明によれば、比較的少ないデ・−夕景で複雑かつ[
21の高いデスパンブラット7t−ムの指向制御を行な
5ことができる。また、大容量のメモリを必要としない
ので、デスパンプラットフォームの制御装置を軽量で消
費電力の少ないものとすることができる。
According to the present invention, it is possible to create complex and [
Directional control of 21 high despan brats 7tm can be performed. Further, since a large capacity memory is not required, the control device of the despan platform can be made lightweight and consume less power.

【図面の簡単な説明】[Brief explanation of drawings]

第1図は本発明に係るデスバングラット2オームの制御
装置の嘴成を示す構成図、第2図は制御装置内のマイク
ロプロセッサの処理手順を示すフローチャートでおる。 1・・・・・・マイクロプロセッサ 2・・・・・・RAM 3・・・・・・受信装置 4・・・・・・ROM 5・・・・・・タイマ 6・・・・・・指1b゛方向記慢部 7・・・・デスパンプラットフォーム制御回路8・・・
・・・テスハンフラノトフォーム9・・・・・・データ
バス 5 −・
FIG. 1 is a block diagram showing the configuration of a control device for a desbang grat 2 ohm according to the present invention, and FIG. 2 is a flowchart showing the processing procedure of a microprocessor in the control device. 1... Microprocessor 2... RAM 3... Receiving device 4... ROM 5... Timer 6... Finger 1b Direction recording unit 7...Despan platform control circuit 8...
・・・Tesshanfuranotoform 9・・・・・・Data bus 5 −・

Claims (1)

【特許請求の範囲】 1、衛星に搭載されるデスパンプラットフォームの指向
方向を時刻の式で近似させ、その式の係数を地上局から
伝送される受信装置と、その係数データを記憶する記憶
装置と、衛星上の時刻を管理するタイマと、所定の時刻
ごとに前記係数データにしたがって指向方向を演算する
演算処理装置とからなり、その指向方向データに応じて
デスパンプラットフォームを制御することを特徴とする
デスパンプラットフォームの制御装置。 2、指向方向を時刻の式で近似させる場合、一定時間分
毎に近似させることを特徴とする特許請求の範囲第1項
記載のデスパンプラットフォームの制御装置。
[Claims] 1. A receiving device for approximating the pointing direction of a despan platform mounted on a satellite using a time equation, and transmitting the coefficients of the equation from a ground station, and a storage device for storing the coefficient data. and a timer that manages the time on the satellite, and an arithmetic processing unit that calculates the pointing direction according to the coefficient data at each predetermined time, and controls the despan platform according to the pointing direction data. A control device for the despan platform. 2. The control device for a despan platform according to claim 1, wherein when approximating the pointing direction using a time expression, the approximation is performed every fixed period of time.
JP60212425A 1985-09-27 1985-09-27 Controller for despun platform Pending JPS6273822A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP60212425A JPS6273822A (en) 1985-09-27 1985-09-27 Controller for despun platform

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP60212425A JPS6273822A (en) 1985-09-27 1985-09-27 Controller for despun platform

Publications (1)

Publication Number Publication Date
JPS6273822A true JPS6273822A (en) 1987-04-04

Family

ID=16622377

Family Applications (1)

Application Number Title Priority Date Filing Date
JP60212425A Pending JPS6273822A (en) 1985-09-27 1985-09-27 Controller for despun platform

Country Status (1)

Country Link
JP (1) JPS6273822A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008302808A (en) * 2007-06-07 2008-12-18 Mitsubishi Electric Corp Orbit control programming device for spacecraft

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008302808A (en) * 2007-06-07 2008-12-18 Mitsubishi Electric Corp Orbit control programming device for spacecraft

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