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A redundant ECU controller for aero-engine and its control method

An aero-engine and controller technology, applied in the direction of engine control, machine/engine, mechanical equipment, etc., can solve the problems of engine failure, ECU control failure, low reliability of the controller, etc., to achieve precise control and ensure safety.

Active Publication Date: 2017-10-20
CHERY AUTOMOBILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] To sum up, there are the following technical problems in the prior art: the reliability of the controller with a single ECU circuit structure is not high, and when a partial circuit failure occurs, it will directly lead to the failure of the ECU control and cause engine failure

Method used

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  • A redundant ECU controller for aero-engine and its control method
  • A redundant ECU controller for aero-engine and its control method

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Embodiment Construction

[0028] The present invention will be described in detail below according to the accompanying drawings, which is a preferred embodiment among various implementations of the present invention.

[0029] In a preferred embodiment, a controller with an engine redundant ECU circuit structure is realized by designing redundant input circuits, redundant output circuits, and redundant CPUs of the controller. When one ECU is working normally, the other ECU is in the hot backup state. When the ECU believes that the input signal of a certain channel is unreliable, it can switch to the input signal from another channel; when a certain channel load or drive circuit failure is diagnosed , can be switched to drive the load from another channel; when a CPU fails or is untrustworthy, it can be switched to another CPU to control the engine; therefore, this ECU redundant circuit structure improves the reliability of the controller. The main design idea of ​​the controller is as follows:

[0030]...

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Abstract

The invention relates to a controller of an engine redundant ECU circuit structure and a control method of the controller. The technical scheme is achieved by designing input circuit redundancy, output circuit redundancy and CPU redundancy of the controller. When one ECU works normally, the other ECU is in the hot standby state. When the ECUs consider that an input signal of a certain channel is unbelievable, a signal can be switched to be input from the other channel. When it is diagnosed that a fault occurs to the load of a certain channel or a drive circuit, the load can be switched to be driven from the other channel. When a fault occurs to a certain CPU or the certain CPU is unbelievable, an engine can be switched to be controlled by the other CPU. Therefore, through the ECU redundant circuit structure, the reliability of the controller is improved.

Description

technical field [0001] The invention relates to the field of automobile electronic control, and is applied to the control of engines, in particular to a highly reliable redundant ECU controller for aeroengines. Background technique [0002] For any object equipped with a power drive carrier, its power drive parts are all core key parts. In real life, conventional drive parts mainly use engines (gasoline or diesel engines). The ECU (Engine Control Unit) is the brain and nervous system that controls the engine. Its function and reliability directly affect the operation of the entire object. [0003] For ordinary passenger cars, the engine controller has a single ECU circuit structure, and its circuit hardware structure is the same as that of conventional electronic and electrical systems. This hardware circuit structure is shown in Figure D.1-Generic in the standard ISO26262-5-2011 There is a description in the hardware of a system. It can be seen from the description that th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02C9/00
CPCF02C9/00F05D2270/46
Inventor 万强胜
Owner CHERY AUTOMOBILE CO LTD