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Timing synchronization controller of ground simulation system

A synchronous controller and ground simulation technology, applied in the field of spacecraft engineering, can solve the problems affecting the performance of the simulation system, poor parallelism, etc., to reduce redundant information, ensure synchronization and parallelism, and improve timing accuracy.

Inactive Publication Date: 2014-04-02
BEIJING INST OF SPACECRAFT SYST ENG
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Problems solved by technology

Although this synchronous control method ensures the correctness of the causal sequence between interactive processes, it has poor parallelism and a large amount of redundant control information in the interactive information, which affects the performance of the entire simulation system.

Method used

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  • Timing synchronization controller of ground simulation system
  • Timing synchronization controller of ground simulation system
  • Timing synchronization controller of ground simulation system

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Embodiment Construction

[0036] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

[0037] Such as figure 1 Shown is a schematic structural diagram of the timing synchronization controller of the present invention. It can be seen from the figure that the timing synchronization controller includes a hardware timing module, a timing module and a synchronization control module. The clock drift rate and the simulation start message generate the simulation step pulse signal, and the simulation card converts the simulation step pulse signal into the simulation step information, and uses the UDP protocol to broadcast the simulation step information in the network; at the same time, the simulation step information will be included The data packet is sent to the timing module, and the clock drift rate is read from the simulation start message, and the clock drift rate and the pre-stored synchronization upper limit value are sent to the ...

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Abstract

The invention relates to a timing synchronization controller of a ground simulation system. Aiming at the characteristics that each sub-system of the ground simulation system has different simulation step sizes and high parallelism and coupling requirements, the controller adopts a timing method based on combination of a hardware timing module and a timing module, so that the consistency of system time is ensured when the sub-systems with different simulation step sizes are timed; and meanwhile, a timestamp sequence based level process scheduling method, and a level synchronization control technical scheme are adopted, so that the redundant information in system control information is reduced, the synchronization and the parallelism of system simulation are ensured, and the degree of the coupling of the system is improved.

Description

technical field [0001] The invention relates to a timing synchronization controller of a ground simulation system, which belongs to the technical field of spacecraft engineering. Background technique [0002] The ground simulation system of spacecraft is a typical distributed system, and timing and synchronization control are the key technologies that affect the performance of system simulation. During the system simulation process, it is necessary to ensure the time consistency of each subsystem and the correctness of the causal sequence of the process, reduce redundant information in simulation interaction, and improve system parallelism and coupling. At present, the related technologies widely used and under research are mainly as follows: [0003] 1. The software timing method [0004] The current simulation system mostly uses the computer crystal oscillator clock as the clock signal reference, and uses software means to realize the time calibration of each subsystem. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L7/00
Inventor 罗毓芳王佳伟邵坤邱瑞周永辉李强
Owner BEIJING INST OF SPACECRAFT SYST ENG
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