Method and system for recovering error in operation of control software of aeroengine

An aero-engine and control software technology, which is applied to program control devices, generation of response errors, program loading/starting, etc., can solve problems such as short-term loss of control of the engine, speed fluctuations, etc., achieve rapid detection and automatic reset, and ensure rapid recovery , Avoid the effect of program running away

Active Publication Date: 2017-07-25
CHINA AVIATION POWER MACHINE INST
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  • Summary
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  • Description
  • Claims
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Problems solved by technology

[0005] The purpose of the present invention is to provide a recovery method and system for an error in the operation of the control software of an aero-engine, so as to solve the technical problems of short-term loss of control and speed fluctuation of the engine caused by the difficulty in quickly recovering the existing aero-engine due to an error in the operation of the control software

Method used

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  • Method and system for recovering error in operation of control software of aeroengine
  • Method and system for recovering error in operation of control software of aeroengine
  • Method and system for recovering error in operation of control software of aeroengine

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Embodiment 1

[0041] refer to figure 1 , preferred embodiment one of the present invention provides a kind of recovery method of the control software operation error of aero-engine, this method comprises:

[0042] Step S101, judging whether the abnormal operation of the control software reaches the first preset time, if so, execute step S102, otherwise, the control software continues to execute normally; the abnormal operation is judged by whether the control software executes the dog clearing operation. In this embodiment, a software watchdog is set in the control software, and the processor executes the law according to the order of the control software, and each cycle (this embodiment takes 10us as an example) will execute to the clearing dog program, that is, watch the software The timer of the watchdog is cleared. If the control software runs away, the instructions are not executed in order. When the processor exceeds the first preset time (the present embodiment takes 11.86ms as an ex...

Embodiment 2

[0052] The recovery method of embodiment two comprises the following steps:

[0053] Step S201, determine whether the abnormal operation of the control software reaches the first preset time, if so, execute step S208, otherwise, the control software continues to execute normally; wherein, the abnormal operation is judged by whether the control software executes the dog clearing operation. In this embodiment, a software watchdog is set in the control software, and the processor executes the law according to the order of the control software, and each cycle (this embodiment takes 10us as an example) will execute to the clearing dog program, that is, watch the software The timer of the watchdog is cleared. If the control software runs away, the instructions are not executed in order. When the processor exceeds the first preset time (the present embodiment takes 11.86ms as an example) and still does not execute the dog clearing program, If the software watchdog invokes an interrup...

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Abstract

The invention discloses a recovery method and system for error in the operation of the control software of an aero-engine. The method includes: judging whether the operation process of the control software has an error, and calling a reset command to reset if an error occurs. : Judging whether the abnormal operation of the control software has reached the first preset time, if so, judging that the control software has an error; when receiving an interrupt request, judging whether the interrupt request is an abnormal interrupt, if so, clearing the interrupt request, otherwise executing the interrupt; After the interruption, it is judged whether the interruption return instruction of the interruption is received within the second preset time, if otherwise, the control software jumps abnormally, and the control software is set to execute the trap program to call the reset instruction for reset. The restoration method and system of the present invention realize rapid detection and automatic reset of control software operation errors, reduce the short-term out-of-control period of the engine, and ensure the stable and reliable operation of the engine.

Description

technical field [0001] The invention relates to the technical field of aero-engine control, in particular, to a recovery method and system for an error in the operation of control software of an aero-engine. Background technique [0002] The electronic controller of the aero-engine is the brain of the engine, and the control software of the aero-engine is the core of the electronic controller. It collects engine sensor signals through the hardware of the electronic controller, uses communication to receive instructions from the aircraft, and then controls the corresponding actuator action (switch output) through the control algorithm to realize the state change of the engine. [0003] On the one hand, the electronic controller of an aero-engine works in a harsh electromagnetic environment. Although the electromagnetic compatibility design method is adopted, interference is inevitable. On the other hand, the CPU system of the electronic controller is a very precise system, a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F9/445G06F11/07
Inventor 邓文革宋云峰刘铁庚高广华张礼华卢圣涛
Owner CHINA AVIATION POWER MACHINE INST
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