Gyro signal source and excitation generation method for satellite control system
A satellite control system and signal source technology, applied in general control systems, control/regulation systems, testing/monitoring control systems, etc., can solve the problems of low degree of automation and low accuracy of gyro signal sources, and achieve the goal of improving the degree of automation and improving The degree of automation and maturity, the effect of improving overall performance
Active Publication Date: 2020-07-14
CHINA ACADEMY OF SPACE TECHNOLOGY
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Problems solved by technology
[0005] The technical problem to be solved by the present invention is: aiming at the problems of low precision and low degree of automation of the current gyro signal source, a gyro signal source and an excitation generation method for a satellite control system are provided, which realizes miniaturization and automation of the gyro signal source, and improves ease of use and reliability
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[0033] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0034] Such as figure 2 As shown, a satellite control system gyro signal source includes: a main controller module, a DA conversion module, a V / I conversion module, an area matching output module and a safety isolation module;
[0035] The main controller module adopts AT90CAN128 single-chip microcomputer, which is embedded with CAN controller and has rich I / O interfaces, which is convenient for data exchange and control with the subsequent DA conversion module. The main controller module receives the satellite three-axis angular velocity data sent by the dynamics computer and the signal source output control signal through the CAN bus, and each angular velocity data is calculated according to the agreed protocol of 2-byte double data, equivalent to 0.0001° / s, and generates The input data streams DIN and corresponding control signals / CS and LDAC of s...
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In order to solve the current situations of low precision and low automation degree of current gyro signal sources, the invention provides a gyro signal source of a satellite control system and an excitation generation method. According to the signal source, by designing a DA conversion circuit and adopting a region matching circuit method, the adjustable range of output excitation current is expanded, different kinds of current output precision under different output ranges are realized separately, dynamic instructions are added by adopting a CAN bus and a dynamic computer for communication,and the automation degree of the operation of the gyro signal source is increased. According to the gyro signal source of the satellite control system and the excitation generation method, the cost ofthe gyro signal source is reduced, the excitation precision of whole output current can be improved, and the adjustable range can be expanded; moreover, an automatic design facilitates the improvement of a test capability in the future.
Description
technical field [0001] The invention is applicable to the field of spacecraft ground testing, and relates to a satellite control system gyro signal source and an excitation generating method. Background technique [0002] The gyro system in the satellite control system is composed of a gyro and a gyro circuit box, which mainly completes the acquisition and calculation of the angular velocity and attitude information of the satellite in orbit. During the ground test of the satellite, the gyro system needs to cooperate to complete the whole-star verification of the function and performance of the control system. [0003] Since the satellite's attitude and position do not change during the ground test of the satellite, the on-board gyroscope cannot actually collect the angular velocity change during the satellite's in-orbit motion, and generate satellite angular velocity feedback. Therefore, it is necessary to replace the gyroscope with special test equipment, and form a close...
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IPC IPC(8): G05B23/02G01C19/00
CPCG01C19/00G05B23/0213G05B2219/24065
Inventor 任立新段传辉常雅杰黄宇嵩张轫柏芊
Owner CHINA ACADEMY OF SPACE TECHNOLOGY