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A real-time test method for millisecond-level satellite attitude and orbit control

A technology of orbit control and satellite attitude, applied in the field of aerospace control, can solve the problems of ground test system restricting platform test work, improving performance, etc., achieving the effects of easy maintenance, reduced access cycle, and high reliability

Active Publication Date: 2015-12-30
BEIJING INST OF CONTROL ENG
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AI Technical Summary

Problems solved by technology

The non-real-time problem of the ground test system has become a bottleneck restricting the platform test work and improving performance

Method used

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  • A real-time test method for millisecond-level satellite attitude and orbit control
  • A real-time test method for millisecond-level satellite attitude and orbit control

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Embodiment Construction

[0024] Such as figure 2 As shown, it is a functional block diagram of the real-time test process of the satellite attitude-orbit control (attitude-orbit control) of the present invention. First, start the main program of the test system, and establish a Windows non-real-time human-computer interaction interface and an RTX real-time operating environment. Extended question. Create a shared memory space for information exchange between Windows and RTX; under Windows, set the initial value of the system simulation, and transfer it to the RTX real-time system environment through the shared memory; under the RTX environment, complete including the PCI device card The initialization work of related system hardware; RTX sets and starts the millisecond-level real-time timer, and creates a periodic execution function, waiting for the satellite-rocket separation signal: if it is judged that the satellite-rocket separation signal is invalid, then end the periodic function in this timin...

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Abstract

The invention relates to a millisecond-level satellite attitude orbit control real-time testing method. The millisecond-level satellite attitude orbit control real-time testing method comprises the following steps that: firstly, a system framework of Windows + RTX is constructed, and a shared memory where Windows can exchange information with RTX is constructed; secondly, a real-time drive program of a PCI equipment board card is adopted to realize the millisecond-level acquisition of executing mechanism control quantity information; and then, iteration of dynamics and kinematics is performed on attitude orbit control so as to obtain real-time information of a satellite attitude measurement sensor and a satellite angle measurement sensor; and finally, under an RTX environment, sensor signals are transmitted to corresponding sensor equipment on a satellite through the real-time driving program of the PCI equipment board card, and a synchronous event mechanism is utilized to make the Windows perform interface update. With the millisecond-level satellite attitude orbit control real-time testing method adopted, real-time operation property of signal flows of ground test equipment can be improved, and a requirement of a high-performance attitude and orbit control system satellite for the real-time property of the ground test equipment can be satisfied.

Description

technical field [0001] The invention belongs to the field of aerospace control and relates to the real-time control signal flow operation problem of test equipment. Background technique [0002] The Sino-French ocean satellite (CFOSAT-1) and the geomagnetism electric survey satellite ZH-1 adopt the CAST2000 platform solution. The execution cycle of the existing test system of CAST2000 is 0.25 or even 1 second, which obviously cannot provide a real-time operating environment, which directly leads to the fact that the indicators of the control system scheme cannot be realized in the test. This not only reduces the reliability of the scheme design, but also reduces the credibility of the scheme design, that is, it is impossible to produce effective data to prove and verify the scheme design in the overall technology link. In addition, the improvement of the real-time performance of the on-board control system of many research and development missions also puts forward the requ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B23/02
Inventor 李贵明曾春平胡越欣车汝才董筠蔡建牟夏李丽琼胡锦昌王勇周亮褚楠
Owner BEIJING INST OF CONTROL ENG
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