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A Soft Synchronization Method Based on Simulation Turntable

A turntable and simulation technology, which is applied in the direction of synchronization devices, digital transmission systems, electrical components, etc., can solve problems such as out-of-sync, frame loss, and affecting the real-time control performance of the simulation turntable, so as to achieve accurate and reliable data transmission and meet real-time requirements Effect

Active Publication Date: 2021-03-26
BEIJING INST OF AEROSPACE CONTROL DEVICES
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AI Technical Summary

Problems solved by technology

[0003] Since the simulation computer, turntable control computer, and FPGA do not use a common hardware clock reference, they all use their own hardware clock references. During the operation, there will be out-of-sync situations, which will cause frame loss and affect the simulation turntable. real-time control performance

Method used

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  • A Soft Synchronization Method Based on Simulation Turntable

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Embodiment Construction

[0031] Below in conjunction with example the present invention is described in further detail. In order to have a more thorough understanding of the present invention, the related art is firstly explained.

[0032] Such as figure 1 As shown, the object of the soft synchronization of the present invention is a simulation turntable and a simulation computer, wherein the simulation turntable includes a turntable real-time control computer and an FPGA servo computing unit; wherein the data communication is carried out between the simulation computer and the turntable real-time control computer through an optical fiber reflection memory interface, and the turntable Data communication between the real-time control computer and the FPGA servo computing unit is carried out in the form of FIFO through the DMA channel. The turntable real-time control computer, FPGA servo computing unit, and simulation computer use independent hardware clock references; the simulation computer is respon...

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Abstract

The invention provides a soft synchronization method based on a simulation rotating table, and belongs to the technical field of high-precision simulation rotating table control. According to the method, real-time control of the operation period of the computer and the FPGA servo computing unit of the rotating table is reasonably configured and dynamic adjustment is performed in the operation process so that the computer and the FPGA servo computing unit are enabled to mutually and synchronously operate and maintain synchronous with the simulation computer, the problem of frame loss in the simulation process can be solved and the real-time control performance of the simulation rotating table can be greatly enhanced.

Description

technical field [0001] The invention relates to a soft synchronization method based on an emulation turntable. Background technique [0002] The simulation turntable is an important hardware-in-the-loop simulation test equipment, which can move quickly according to the online given simulation trajectory curve, and provide real-time changing space physical attitude excitation for the tested product installed on it, so as to achieve the simulated flight ballistic test the goal of. The control computer of the simulation turntable communicates with the simulator (host computer) through a fixed simulation cycle, and the simulator sends the simulation position command to the control computer of the turntable. The turntable control computer also communicates with the FPGA module according to a fixed simulation cycle. When the turntable control computer receives the simulated position command, it performs interpolation calculation on the command and sends it to the FPGA module for...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L7/00H04L29/08
CPCH04L7/00H04L67/12
Inventor 王胜利方振华卢明涛胡吉昌钟正虎
Owner BEIJING INST OF AEROSPACE CONTROL DEVICES
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