CN105629952A - Testing method for engine control type software - Google Patents
Testing method for engine control type software Download PDFInfo
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- CN105629952A CN105629952A CN201511020921.5A CN201511020921A CN105629952A CN 105629952 A CN105629952 A CN 105629952A CN 201511020921 A CN201511020921 A CN 201511020921A CN 105629952 A CN105629952 A CN 105629952A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B23/00—Testing or monitoring of control systems or parts thereof
- G05B23/02—Electric testing or monitoring
- G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
- G05B23/0218—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterised by the fault detection method dealing with either existing or incipient faults
- G05B23/0224—Process history based detection method, e.g. whereby history implies the availability of large amounts of data
- G05B23/0227—Qualitative history assessment, whereby the type of data acted upon, e.g. waveforms, images or patterns, is not relevant, e.g. rule based assessment; if-then decisions
- G05B23/0235—Qualitative history assessment, whereby the type of data acted upon, e.g. waveforms, images or patterns, is not relevant, e.g. rule based assessment; if-then decisions based on a comparison with predetermined threshold or range, e.g. "classical methods", carried out during normal operation; threshold adaptation or choice; when or how to compare with the threshold
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/24—Pc safety
- G05B2219/24048—Remote test, monitoring, diagnostic
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- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Control Of Positive-Displacement Air Blowers (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Testing Of Engines (AREA)
Abstract
The invention relates to a testing method for engine control type software. The engine control type software has characteristics of long operating time and large received data size. According to the traditional testing method, hidden performance defect data can not be discovered easily within effective time. In order to solve the problem, the invention provides a testing method for engine control type software. Abnormal state setting is carried out on important performance parameters like an engine rotating speed, a compressor temperature, a fan rotating speed, and a fan guide vane position and the like directly and corresponding testing cases are obtained by conversion and are applied to an engine system. Therefore, various potential performance defects that may occur during the engine operating process can be discovered rapidly and the efficiency and quality of the engine testing work can be improved.
Description
Technical field
The present invention relates to aeroengine control system detection technique field.
Background technology
At present, mainstream technology is the engine control software Test cases technology based on operation profile and manner of execution. This testing method also exists a lot of problem in implementation process, mainly comprises following several aspects: 1) operation profile is difficult to structure. Software especially engine control class software, it often has that dynamic logic is remarkable, Run-time scenario is various when running, software and hardware alternately frequent, laws of use be difficult to the complex characteristic such as tolerance, want its function running condition and probabilistic information thereof to be carried out accurately careful portraying, it is very very difficult thing; 2) taking off wrong inefficiency: the test case overwhelming majority that traditional software reliability testing technology generates is all design according to the normal path that performs, it is difficult to excite in software running process various potential inactive logic. Therefore its to take off wrong efficiency very low, it is very difficult to meet the demand that aviation Software reliability of weapon equipment increases rapidly; 3) test job amount is huge: this technology needs according to the large-scale test case of operation profile stochastic generation, and required test duration and expense are all very huge. For the engine control software that research fund and time are all at full stretch, it is very difficult to meet its test job requirement. Therefore, poor based on the software reliability test use-case generation of operation profile and applicability and the suitability of manner of execution, it is very difficult to be generalizable in aviation equipment software triturating.
Based on this problem, the present invention proposes the testing method of a kind of engine control software. The core content of this technology is the real-time inspection result according to engine control software performance, design and generation software test case use-case. This kind of Test cases technology technology biases toward whether Software failure modes potential in verifying software demand is controlled effectively or alleviates. Compared with traditional software reliability testing use-case generation technique, its have 2 significantly different: 1) have and higher take off wrong efficiency, and lower test job amount, it is applicable to being applied to very much the engine control software that Development Schedule is nervous and reliability requirement is higher; 2) what it was more paid close attention to is the identification and verification efficiency of Software failure modes, instead of to MTTF, the software reliability parameters such as reliability carry out qualitative assessment.
Summary of the invention
The object of the present invention
Traditional software testing method is lower for the wrong efficiency of engine control software, and is difficult to find hiding engine performance data defect. For this problem, the present invention proposes the testing method of a kind of aeroengine control software, can set corresponding test case according to the error state (ERST) of engine important performance characteristic, and carries out real-time testing in operational process.
The technical scheme of the present invention
The concrete testing method providing a kind of engine control software, comprises the steps:
Step 1: the performance test results analyzing engine control software
Under the engine control software running environment based on embedded VxWorks operating system, start Turbofan Engine Control software; The performance data in engine operation process is gathered by the input/output interface of embedded VxWorks operating system. Described engine performance data comprises fan tachometer value, fan rotating speed collection period, pneumatic plant temperature value, pneumatic plant temperature acquisition cycle, force value, pressure acquisition cycle, fan guide vane position value, fan guide vane station acquisition cycle.
Step 2: according to engine performance data, according to requiring design test case as follows:
The outlier that fan tachometer value is set greater than engine fan tripping speed value, and this outlier is converted into the input data of test case;
The outlier that fan rotating speed collection period is set greater than engine data collection cycle, and this outlier is converted into the input data of test case;
The outlier that fan rotating speed collection period is set smaller than engine data collection cycle, and this outlier is converted into the input data of test case;
The outlier that pneumatic plant temperature value is set greater than pneumatic plant temperature extremes, and this outlier is converted into the input data of test case;
It is the outlier being greater than engine data collection cycle by pneumatic plant temperature acquisition cycle set, and this outlier is converted into the input data of test case;
It is the outlier being less than engine data collection cycle by pneumatic plant temperature acquisition cycle set, and this outlier is converted into the input data of test case;
It is the outlier being greater than pressure limit value by design of pressure, and this outlier is converted into the input data of test case;
It is the outlier being greater than engine data collection cycle by pressure acquisition cycle set, and this outlier is converted into the input data of test case;
It is the outlier being less than engine data collection cycle by pressure acquisition cycle set, and this outlier is converted into the input data of test case;
The outlier that fan guide vane position value is set greater than fan guide vane position ultimate value, and this outlier is converted into the input data of test case;
It is the outlier being greater than engine data collection cycle by fan guide vane station acquisition cycle set, and this outlier is converted into the input data of test case;
It is the outlier being less than engine data collection cycle by fan guide vane station acquisition cycle set, and this outlier is converted into the input data of test case.
Step 3: by the serial ports of VxWorks operating system input debugger, above-mentioned all test cases are inputted data applies in engine control software, fan tachometer value, pneumatic plant temperature value, force value and the fan guide vane position value that record engine system is fed back.
Useful effect
The present invention is directed in engine control software operational process engine temperature, engine pressure, engine stator position and the engine fan tachometer value collected, set by outlier, be converted into and input data for engine control software test case. Can be the support technology means that enngine control system software test work offer is important, quick auxiliary tester finds in engine operation process common to defect, thus is the conceptual design of engine system, the evident information of sizing work offer necessity.
Embodiment
The concrete testing method providing a kind of engine control software, comprises the steps:
Step 1: the performance test results analyzing engine control software
Under the engine control software running environment based on embedded VxWorks operating system, start Turbofan Engine Control software; The performance data in engine operation process is gathered by the input/output interface of embedded VxWorks operating system; Described engine performance data comprises fan tachometer value, fan rotating speed collection period, pneumatic plant temperature value, pneumatic plant temperature acquisition cycle, force value, pressure acquisition cycle, fan guide vane position value, fan guide vane station acquisition cycle;
Step 2: according to described performance data, according to requiring design test case as follows:
The outlier that fan tachometer value is set greater than engine fan tripping speed value, and this outlier is converted into the input data of test case;
The outlier that fan rotating speed collection period is set greater than engine data collection cycle, and this outlier is converted into the input data of test case;
The outlier that fan rotating speed collection period is set smaller than engine data collection cycle, and this outlier is converted into the input data of test case;
The outlier that pneumatic plant temperature value is set greater than pneumatic plant temperature extremes, and this outlier is converted into the input data of test case;
It is the outlier being greater than engine data collection cycle by pneumatic plant temperature acquisition cycle set, and this outlier is converted into the input data of test case;
It is the outlier being less than engine data collection cycle by pneumatic plant temperature acquisition cycle set, and this outlier is converted into the input data of test case;
It is the outlier being greater than pressure limit value by design of pressure, and this outlier is converted into the input data of test case;
It is the outlier being greater than engine data collection cycle by pressure acquisition cycle set, and this outlier is converted into the input data of test case;
It is the outlier being less than engine data collection cycle by pressure acquisition cycle set, and this outlier is converted into the input data of test case;
The outlier that fan guide vane position value is set greater than fan guide vane position ultimate value, and this outlier is converted into the input data of test case;
It is the outlier being greater than engine data collection cycle by fan guide vane station acquisition cycle set, and this outlier is converted into the input data of test case;
It is the outlier being less than engine data collection cycle by fan guide vane station acquisition cycle set, and this outlier is converted into the input data of test case.
Step 3: by the serial ports of VxWorks operating system input debugger, above-mentioned all test cases are inputted data applies in engine control software, fan tachometer value, pneumatic plant temperature value, force value and the fan guide vane position value that record engine system is fed back.
Claims (1)
1. a testing method for engine control software, comprises the steps:
Step 1: the performance test results analyzing engine control software
Under the engine control software running environment based on embedded VxWorks operating system, start Turbofan Engine Control software; The performance data in engine operation process is gathered by the input/output interface of embedded VxWorks operating system; Described engine performance data comprises fan tachometer value, fan rotating speed collection period, pneumatic plant temperature value, pneumatic plant temperature acquisition cycle, force value, pressure acquisition cycle, fan guide vane position value, fan guide vane station acquisition cycle;
Step 2: according to engine performance data, according to requiring design test case as follows:
The outlier that fan tachometer value is set greater than engine fan tripping speed value, and this outlier is converted into the input data of test case;
The outlier that fan rotating speed collection period is set greater than engine data collection cycle, and this outlier is converted into the input data of test case;
The outlier that fan rotating speed collection period is set smaller than engine data collection cycle, and this outlier is converted into the input data of test case;
The outlier that pneumatic plant temperature value is set greater than pneumatic plant temperature extremes, and this outlier is converted into the input data of test case;
It is the outlier being greater than engine data collection cycle by pneumatic plant temperature acquisition cycle set, and this outlier is converted into the input data of test case;
It is the outlier being less than engine data collection cycle by pneumatic plant temperature acquisition cycle set, and this outlier is converted into the input data of test case;
It is the outlier being greater than pressure limit value by design of pressure, and this outlier is converted into the input data of test case;
It is the outlier being greater than engine data collection cycle by pressure acquisition cycle set, and this outlier is converted into the input data of test case;
It is the outlier being less than engine data collection cycle by pressure acquisition cycle set, and this outlier is converted into the input data of test case;
The outlier that fan guide vane position value is set greater than fan guide vane position ultimate value, and this outlier is converted into the input data of test case;
It is the outlier being greater than engine data collection cycle by fan guide vane station acquisition cycle set, and this outlier is converted into the input data of test case;
It is the outlier being less than engine data collection cycle by fan guide vane station acquisition cycle set, and this outlier is converted into the input data of test case;
Step 3: by the serial ports of VxWorks operating system input debugger, above-mentioned all test cases are inputted data applies in engine control software, fan tachometer value, pneumatic plant temperature value, force value and the fan guide vane position value that record engine system is fed back.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108490921A (en) * | 2018-04-23 | 2018-09-04 | 江苏恩达通用设备有限公司 | A kind of engine testing system |
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| US5129221A (en) * | 1989-05-23 | 1992-07-14 | Rolls-Royce Plc | Gas turbine engine fuel control system with enhanced relight capability |
| CN101256117A (en) * | 2008-03-26 | 2008-09-03 | 北京航空航天大学 | Device and method for testing synthesis parameter of aviation piston engine |
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| CN105629952B (en) | 2018-04-03 |
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