Switch control method of engine redundancy electric-control system

Abstract

The invention discloses a method for controlling and switching a redundancy electronic control system of an engine. Digital signals are used between active-standby circuit wafers for monitoring active-standby state in real time; active-standby control commands are generated according to monitor information; wherein, the monitor on the active-standby state is realized mainly by comparing characteristic signals passed by an opposite site; continuous new characteristic signals are used for determining whether the state of the opposite site is normal or not; the control state of a logic circuit is determined and switched according to the information of the active-standby state so as to increase accuracy and reliability of switching. The method has the advantages of flexible setting, simple, reliable, and stable structure.

Description

Switching control method of engine redundant electronic control system (1) Technical field The invention relates to an engine electric control system, in particular to a switching circuit and a control method of an engine redundant electric control system. (2) Background technology In order to improve the reliability of the system, the key units or systems in the system usually adopt the redundancy technology of active backup and hot backup. The so-called main-standby hot backup means that the same two units or systems work at the same time, one is for normal work and the other is for backup. When the unit or system for normal work fails, the system should be able to automatically activate the backup unit or switch to Backup system to ensure the continuity of system work. In the engine electronic control equipment, the reliability of the system is extremely important, especially in some key application areas such as power station unit engine control, military ship main / a...

AI Technical Summary

Problems solved by technology

1. Simple gate circuits are used to realize redundant logic processing, and the error signals that may be generated when the system fails cannot be identified, which affects the reliability of the redundant circuit;

2. A single logic signal is used as the input signal, which is prone to erroneous actions when subjected to external interference;

3. The power-on reset process of the system is not perfect, and the logic signal of the power-on reset process is not provided to achieve effective control of the external interface;

4. There is no data synchronization interface, which cannot guarantee the synchronization of redundant system status, and cannot meet the requirements of smooth transition of system switching;

5. Does not have the function of resetting the faulty system to try to restore the system

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