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Method and system for controlling double channel synchronization

A dual-channel, channel technology, applied to jet propulsion devices, gas turbine devices, machines/engines, etc., can solve the problems of large timing interruption time deviation and permanent out-of-synchronization, and achieve the effect of reducing timing interruption time difference

Active Publication Date: 2019-05-03
中国航发控制系统研究所
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  • Abstract
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Problems solved by technology

[0003] The currently commonly used dual-channel synchronization method has the disadvantages of large timing interruption time deviation and possible permanent out-of-synchronization.

Method used

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  • Method and system for controlling double channel synchronization

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Embodiment Construction

[0044] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0045] It should be noted that the names used in this article and their meanings are as follows:

[0046] The small frame cycle refers to the cycle of the smallest periodic task, usually the scheduled interrupt cycle;

[0047] Large frame cycle refers to the least common multiple of the cycles of all periodic tasks;

[0048] The small frame beat number refers to the serial number of each small frame period under a large frame period;

[0049] Timing interruption time deviation refers to the actual timing interruption interval time - standard timing interruption interval time;

[0050] Fast / slow channel means that under the premise that the two-channel small f...

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Abstract

The invention discloses a method for controlling double channel synchronization. A double channel comprises two channel bodies; and double channel synchronization comprises power-on synchronization and cycle synchronization. The method for controlling double channel synchronization comprises the steps: controlling power-on synchronization, specifically, timer interrupt is controlled by judging theorder of the time that the two channel bodies complete the initialization; and controlling cycle synchronization, specifically, a timer interrupt timer is reset by judging whether last small frame beat numbers of the two channel bodies are consistent or not. The invention also discloses a system for controlling double channel synchronization. The method for controlling double channel synchronization reduces the timing difference of the timer interrupt of the double channel.

Description

technical field [0001] The invention relates to the technical field of aero-engine control, in particular to a method for controlling dual-channel synchronization and a system for controlling dual-channel synchronization. Background technique [0002] Due to the high security and real-time requirements of the aero-engine digital electronic control system, dual-channel control is often used, and how to keep the dual-channel clocks always synchronized is an important technology. [0003] The currently commonly used dual-channel synchronization method has the disadvantages of large timing interruption time deviation and possible permanent out-of-synchronization. Therefore, how to control the dual channels to achieve better synchronization has become a technical problem to be solved urgently by those skilled in the art. Contents of the invention [0004] The present invention aims to solve at least one of the technical problems in the prior art, and provides a method for ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02C9/00
Inventor 周雄杨云强施彬彬邵腾飞
Owner 中国航发控制系统研究所
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