CN103678129A - Electromechanical system software fault injection method based on time triggering - Google Patents
Electromechanical system software fault injection method based on time triggering Download PDFInfo
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Abstract
The invention provides an electromechanical system software fault injection method based on time triggering. Faults to be injected are classified in a fault injection system, an isolated fault injection list is complied for each type of faults and a fault injection counter is arranged in the fault injection system; steps such corresponding fault injection codes are set in terms of each type of faults, software fault injection can be performed on the basis that the real-time performance of an original program task is not affected; according to the time triggering, the fault injection process can be automatically performed. The electromechanical system software fault injection method based on time triggering can be used for improving the efficiency of fault injection of an electromechanical system, a verification test on the fault-tolerant ability of the machine-loaded electromechanical system has universality and the interference in the fault injection test by testing personnel is relieved.
Description
Technical field
The invention belongs to airborne Electromechanical Management subsystem, relate to a kind of Mechatronic Systems software fault method for implanting triggering based on the time.
Background technology
Due to the increasingly sophisticated property of aircraft Mechatronic Systems, the difficulty of their control and management is also increased thereupon, Electromechanical Management subsystem must have higher fault-tolerant and troubleshooting capability to guarantee the reliability of system.Yet, the quality of Mechatronic Systems self fault tolerant mechanism can only be detected and be verified at the system Shi Caineng that breaks down, therefore, develop a kind of simple and easy to do, effectively very necessary to the mobile system method that particularly Reliability of Airborne Electromechanical Systems and failure tolerance thereof are evaluated and tested.In the past, the fault that the examination of Mechatronic Systems fault-tolerant ability is often depended on to hardware is injected, in actual application, to some destructive faults, often cannot inject (as electric power system short trouble, acquisition channel BIT fault etc.), cause the fault type of injection insufficient.And software fault method for implanting based on man-machine interaction, often efficiency is lower, and is not suitable for the higher and real-time Mechatronic Systems of complicacy, simultaneously, no matter hardware method for implanting or the software pouring method based on man-machine interaction, all need testing crew to have higher technical capability level.Under the overall background of aircraft electrical and mechanical comprehensive, be badly in need of a kind of simple and reliable, software fault method for implanting that can cover full functional failure of electromechanical type of being applicable to Mechatronic Systems of development.And software fault method for implanting based on time trigger mechanism, can robotization complete fault injection process, meet Mechatronic Systems requirement of real-time, reduce the dependence of test to hardware and human resources, effectively improve verification efficiency and level.
Summary of the invention
Lower in order to solve the insufficient efficiency of fault type that existing fault injection system injects, and be not suitable for the technical matters of the higher and real-time Mechatronic Systems of complicacy, the invention provides a kind of Mechatronic Systems software fault method for implanting based on time triggering.
Technical solution of the present invention is as follows:
A Mechatronic Systems software fault method for implanting based on the time triggers, its special character is: comprise the following steps:
1] failure modes and configuration
A] in fault injection system, the fault that will inject is classified;
B] every class fault establishment fault is injected to table, whether described fault injection table comprises fault ID, fault title, start-up time, duration and activates;
C] fault is set in fault injection system injects counter;
D] for dissimilar fault, corresponding fault injecting codes is set;
2] fault is injected
2.1] operation real-time task software;
2.2] fault to this less important injection, carries out the initial work of fault injection table;
2.3] start fault injecting program task;
2.4] fault that before inquiry, initialization is good is injected table, and start-up time and the duration of this fault is set according to fault injection table; The described duration meets fault and injects the needed shortest time;
2.5] judge whether the counter time arrive this fault and inject start-up time, if so, carry out fault injecting codes, otherwise, continue to wait for; Whether the duration of failure judgement reaches fault continues, and if so, stops fault and injects; If not, continuing fault injects;
Also comprise step 2.6], fault evaluation system injects result to fault and gathers comparative analysis, confirms the whether correct step of fault treating procedure.
Also comprise step 2.7], fault handling object information is injected on computing machine and prints and show in fault.
In order to improve the search efficiency of fault injection table, what fault injection table of the present invention was used is Hash table.
Compared with prior art, advantage is in the present invention:
1, the present invention can be used in airborne management subsystem, can on original program task real-time basis, carry out software fault injection not affecting, trigger according to the time, robotization complete fault injection process.Thereby improve the efficiency that Mechatronic Systems fault is injected, the demonstration test of Airborne Electromechanical Systems fault-tolerant ability is had to universality, and reduced the intervention degree of testing crew to fault injection test.
2, the present invention has reduced the dependence of fault injection test to hardware resource, can complete the covering to Mechatronic Systems total failure type; To the destructive malfunction that cannot inject, can complete by the method;
3, simplicity of design of the present invention, dependable performance, can conveniently carry out the system integration, and Electromechanical Management subsystem is carried out to fault-tolerant ability checking.
4, the present invention can reduce fault injection test hardware and cost of human resources.
Accompanying drawing explanation
Fig. 1 fault is injected process flow diagram;
Fig. 2 fault injection system schematic diagram.
Embodiment
UMS system is by operation real-time task software collection external interface information, fault injection system is according to the different fault types real-time injection UMS real-time task software of the fault by different regularly, afterwards, UMS real-time task software is to the corresponding fault handling of injected fault, after collecting comprehensively by fault injection evaluation system to fault handling information, this fault is injected and evaluated and tested, and inject computer printout demonstration result by fault.
Fault injection system mainly comprises content below:
The fault type that will inject is classified, be mainly divided into the types such as two remaining discrete magnitude input faults, the two remaining discrete magnitude input faults of I/O, the two remaining analog input faults of logic, two remaining discrete magnitude output fault, the input of single remaining discrete magnitude, the output of single remaining discrete magnitude, bus failure and node machine fault.Meanwhile, for different fault type establishment fault, inject table (fault is injected table and used Hash table, improves search efficiency), fault injection table comprises: fault ID, fault name, start-up time, duration and the attribute such as whether activate.
All faults are carried out to the editor of fault injection table according to fault type, mainly to inject start-up time and duration according to type design fault ID, fault name, fault under fault, here need emphasis consider every kind fault-time characteristic, the designed duration should be able to meet fault and inject the required shortest time.
Design error failure function of injecting module, in this module, be designed with fault and inject counter, after upgrading, counter retrieves from fault injection table the fault that clocking value is identical with start-up time, and the fault injection process of calling corresponding failure is carried out fault injection, the fault injection of this kind of fault of cancellation after trouble duration arrives.
The fault injection process of design different faults type, for different faults, designs respectively corresponding fault injection process.
Fault injecting principle is as follows:
1, operation Electromechanical Management computing machine (UMC) real-time task software;
2, the fault (as power supply short circuit fault, cpu fault etc.) of this less important injection is carried out the initial work of fault injection table, comprise the information such as fault ID that fault injects, fault title, start-up time, duration;
3, by real-time task scheduler, start fault injecting program task;
4, before inquiry, the good fault of initialization is injected table, according to fault characteristic (if fault ID is 1001, fault title: power supply short circuit fault, start-up time: 300, trouble duration: start-up time and duration that 5) this fault is set;
Note: be relative time start-up time, system starts counter after powering on and moving, fault injection task is that every 100ms moves once, the every 100ms of counter cumulative 1, be 300 start-up time, be that Counter Value is 300, the time be system power on operation 100ms * 300=30000ms(be start-up time system power on operation 30s after); Trouble duration is 5 * 100ms=500ms.
6, whether the query counts device time arrives this fault and injects start-up time, if time is up, carries out fault injecting codes, otherwise continues to wait for; After trouble duration arrives, stop fault and inject;
8, according to said process, inject dissimilar fault successively;
9, fault evaluation system compares analysis to injecting fault handling result, confirms that whether fault treating procedure is correct;
10, fault handling object information is injected on computing machine and prints and show in fault, for tester, check.
Claims (4)
1. the Mechatronic Systems software fault method for implanting triggering based on the time, is characterized in that: comprise the following steps:
1] failure modes and configuration
A] in fault injection system, the fault that will inject is classified;
B] every class fault establishment fault is injected to table, whether described fault injection table comprises fault ID, fault title, start-up time, duration and activates;
C] fault is set in fault injection system injects counter;
D] for dissimilar fault, corresponding fault injecting codes is set;
2] fault is injected
2.1] operation real-time task software;
2.2] fault to this less important injection, carries out the initial work of fault injection table;
2.3] start fault injecting program task;
2.4] fault that before inquiry, initialization is good is injected table, and start-up time and the duration of this fault is set according to fault injection table; The described duration meets fault and injects the needed shortest time;
2.5] judge whether the counter time arrive this fault and inject start-up time, if so, carry out fault injecting codes, otherwise, continue to wait for; Whether the duration of failure judgement reaches fault continues, and if so, stops fault and injects; If not, continuing fault injects.
2. the Mechatronic Systems software fault method for implanting triggering based on the time according to claim 1, it is characterized in that: also comprise step 2.6], fault evaluation system injects result to fault and gathers comparative analysis, confirms the whether correct step of fault treating procedure.
3. the Mechatronic Systems software fault method for implanting triggering based on the time according to claim 2, is characterized in that: also comprise step 2.7], fault handling object information is injected on computing machine and prints and show in fault.
4. according to the Mechatronic Systems software fault method for implanting based on time triggering described in claim 1 or 2 or 3, it is characterized in that: what described fault injection table was selected is Hash table.
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| CN108614764A (en) * | 2016-12-12 | 2018-10-02 | 中国航空工业集团公司西安航空计算技术研究所 | IMA application software fault filling methods |
| CN110413398A (en) * | 2019-08-06 | 2019-11-05 | 中国工商银行股份有限公司 | Method for scheduling task, device, computer equipment and storage medium |
| CN111448553A (en) * | 2017-12-08 | 2020-07-24 | 华为技术有限公司 | Fault injection system and fault injection method |
| CN112558587A (en) * | 2020-12-02 | 2021-03-26 | 华中科技大学 | Fault injection method based on data acquisition unit |
| CN113031564A (en) * | 2021-03-05 | 2021-06-25 | 西安交通大学 | Method for verifying fault tolerance of aircraft engine controller in loop |
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| CN108614764A (en) * | 2016-12-12 | 2018-10-02 | 中国航空工业集团公司西安航空计算技术研究所 | IMA application software fault filling methods |
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| CN111448553A (en) * | 2017-12-08 | 2020-07-24 | 华为技术有限公司 | Fault injection system and fault injection method |
| CN111448553B (en) * | 2017-12-08 | 2021-11-09 | 华为技术有限公司 | Fault injection system and fault injection method |
| US11307947B2 (en) | 2017-12-08 | 2022-04-19 | Huawei Technologies Co., Ltd. | Fault injection system and method of fault injection |
| CN110413398A (en) * | 2019-08-06 | 2019-11-05 | 中国工商银行股份有限公司 | Method for scheduling task, device, computer equipment and storage medium |
| CN112558587A (en) * | 2020-12-02 | 2021-03-26 | 华中科技大学 | Fault injection method based on data acquisition unit |
| CN113031564A (en) * | 2021-03-05 | 2021-06-25 | 西安交通大学 | Method for verifying fault tolerance of aircraft engine controller in loop |
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Application publication date: 20140326 |