CN102494890A - Method for evaluating manipulation comfort level of automobile clutch based on fuzzy association theory - Google Patents
Method for evaluating manipulation comfort level of automobile clutch based on fuzzy association theory Download PDFInfo
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- CN102494890A CN102494890A CN2011103897513A CN201110389751A CN102494890A CN 102494890 A CN102494890 A CN 102494890A CN 2011103897513 A CN2011103897513 A CN 2011103897513A CN 201110389751 A CN201110389751 A CN 201110389751A CN 102494890 A CN102494890 A CN 102494890A
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Abstract
The invention relates to a method for evaluating a manipulation comfort level of an automobile clutch based on a fuzzy association theory. An objective detection device is used for collecting main performance parameters of a clutch manipulation process and an operation simulation system is used for restoring an operation environment of real driving to the greatest extent; and a data processing and analyzing system is used for analyzing detected objective data and calculating a corresponding comfortableness evaluation grade of the clutch. When the clutch is tested in the operation simulation system of a real automobile, a testing person treads a pedal of the clutch and objective performance parameter samples of one group of the clutches are obtained by the objective detection device. The data processing and analyzing system is used for utilizing a membership grade function to calculate the membership grade of each index of the samples to each evaluation grade according to a parameter variation range of each grade; then the weight of samples is combined and a clear comprehensive judgment is used as reference, so as to calculate a grey correlation degree of the samples corresponding to each grade; and the comfort level grade of the test sample clutch is determined according to the maximum principle.
Description
Technical field
The invention belongs to automobile clutch performance detection technical field, be specifically related to a kind of automobile clutch and control the comfort level evaluation method based on the Fuzzy Correlation theory.
Background technology
Though automatic transmission system is the development trend of world today's automotive transmission; But because the restriction of factors such as cost and technology; Armstrong's patent formula speed reduction unit and dry type clutch thereof are still main application component at present, and manual-gear vehicle remains the main flow of domestic automobile.But also few to the research of functional unit comfort level at present, particularly clutch coupling is controlled the research of comfort level.Because it is a lot of to estimate the quantizating index of clutch operating comfort level; And the relation between the whole subjective assessment standard when these factor indexs and pilot control clutch coupling is quite complicated; And the driver also exists ambiguity and uncertainty to the sensation of comfortableness, and method how to pass judgment on the comfortableness of clutch control comparatively equitably rarely has announcement.Therefore, set up the comparatively complete clutch operating performance synthesis appraisement system of a cover and become extremely urgent.
Summary of the invention
Because the comfortableness feeling evaluation has ambiguity and uncertainty; It is theoretical to the present invention proposes a kind of comprehensive fuzzy evaluation method and grey correlation; Utilize computing machine that automobile clutch is controlled the method that comfort level is estimated; This invention comprises the real vehicle operation simulation system of a cover clutch coupling altogether, the testing apparatus of a cover automobile clutch serviceability and a cover objective evaluation system.Real vehicle operation simulation system comprises adjustable seat, clutch pedal, correlate meter, switch, monitor, clutch master cylinder, wheel cylinder (or power-assisted wheel cylinder).Testing apparatus comprises simulating flywheel, simulation clutch drived disk assy, simulation release bearing and pilot sleeve, pedal force and angular displacement sensor, separating force and separates stroke sensor, Separation sensor, hydraulic-pneumatic measuring instrument.Evaluation system comprises computing machine, data collecting card, database, analysis software, analyzes performance of clutch in order to gather the clutch coupling running parameter.
The s main working parameters of data collecting card collecting test clutch coupling in the evaluation system; Flow to computing machine; Analysis software calculates the opinion rating degree of membership and the degree of association of each parameter according to fuzzy track correlation algorithm; And the Comfort Evaluation grade of judgement clutch coupling, simultaneously the objective parameter and the parameters calculated of gathering are stored in the database.Database in the evaluation system includes two parts content, and a part is the objective running parameter database of clutch coupling, and a part is that each parameter is for each opinion rating degree of membership and degree of association database.Checkout equipments such as objective data storehouse employing sensor are tested different performance of clutch parameters, and parameter is carried out record, set up the objective data storehouse.The evaluation index relevant with the clutch operating comfort level comprises seven parts: the maximum pedal force of clutch coupling, minimum pedal force, final pedal force, semi-linkage point pedal force size, semi-linkage point place damping size, big or small, the minimum pedal force of clutch release travel position.The opinion rating of each parameter comprises 5 grades, that is: very uncomfortable, uncomfortable, general, comfortable, very comfortable, preserves degree of membership and the degree of association of seven objective parameter with respect to these five grades in the rating database.
Confirm the variation range of each parameter between different brackets according to expertise; When tester's disengage the clutch; Data collecting card obtains the objective performance parameter sample of one group of clutch coupling, utilizes membership function to calculate the degree of membership of each index of sample to each opinion rating, combines the weight of sample to carry out association analysis again; Calculate the degree of association of estimating multifactorial evaluation with respect to overall comfort, confirm the comfortableness grade of this sample clutch coupling afterwards according to evaluation result.
Confirm the mobility scale of each parameter different brackets according to expertise.When carrying out the clutch coupling Comfort Evaluation, tester's disengage the clutch, data collecting card collect the objective performance parameter sample of one group of clutch coupling.The degree of membership of the opinion rating of each parameter calculated adopt the membership function of " fall half trapezoidal " structure.In order to reflect the effect of each parameter index in evaluation, can carry out weighting with respect to the situation that departs from of each grade mean value according to each index, depart from manyly more, weighting is big more.With clear multifactorial evaluation ordered series of numbers as a reference, utilize weighted value to calculate the grey relational grade of sample with respect to each grade.According to maximum principle, the grade of sample degree of association maximum is as the comfortableness grade evaluation result of this test sample book.
This invention is got in touch setting up between objective parameter data in the clutch coupling test and the subjective fuzzy evaluation grade the evaluation method of clutch coupling comfortableness grade; With the ambiguity quantization means in the subjective sensation; And eliminated the discrete error of bringing of supplemental characteristic with the grey correlation theory, make this evaluation method comparatively just, reflect the handling comfort of clutch coupling exactly.
Description of drawings
Fig. 1 is a system layout;
Fig. 2 is that the Fuzzy Correlation method is analyzed clutch coupling comfortableness process synoptic diagram;
Fig. 3 (a) is first kind and falls half trapezium structure membership function structure;
Fig. 3 (b) is second kind and falls half trapezium structure membership function structure;
Fig. 3 (c) is that the third falls half trapezium structure membership function structure.
Embodiment
Below in conjunction with accompanying drawing the present invention is described further.
Can find out by Fig. 1, comprise in the system described in the present invention: the real vehicle operation simulation system 2 of objective detection device 1, the one cover clutch coupling of a cover clutch coupling operating characteristic and a cover objective evaluation system 3.Comprise the clutch engagement force sensor in the objective detection device 1, separate stroke sensor, platen lift range sensor, pedal force sensor, pedal displacement sensor.Comprise driver seat, clutch pedal, driving display panel etc. in the simulation system 2.In the objective evaluation system 3 according to the scope of each parameter index in each opinion rating of confirming in the experts database; In the test data substitution objective evaluation system 3 with each sensor in the objective detection device 1 in the test process; Calculate the degree of membership of corresponding each grade of each parameter index; Utilize weighting function to calculate the degree of association of sample to each grade then, the grade that the degree of association is big is the overall comfort opinion rating of clutch coupling.
Can find out by Fig. 2; Utilize fuzzy evaluation rule and grey correlation theoretical; Each parameter index of clutch coupling detection is carried out the calculation step of comfortable grade evaluation; Degree of association size through relatively controlling inter-stages such as comfortableness and each is confirmed the clutch coupling overall comfort, has kept the ambiguity of operation comfort, can reflect the grade of clutch coupling comfortableness simultaneously again comparatively objectively.
Fig. 3 is three kinds of versions of " falling partly trapezoidal " structure membership function, adopts the function of corresponding construction form among Fig. 3 to confirm the membership function of sample parameter with respect to each grade according to the position of parameter in judge rank mobility scales at different levels.Membership function among Fig. 3 (a) is:
Membership function among Fig. 3 (b) is:
Membership function among Fig. 3 (c) is:
Claims (8)
1. control the comfort level evaluation method based on the theoretical automobile clutch of Fuzzy Correlation; This method comprises the real vehicle operation simulation system of a cover clutch coupling; The testing apparatus of one cover automobile clutch serviceability and a cover objective evaluation system, it is characterized in that: real vehicle control simulation system adopts the driving environment of true car; Testing apparatus can be tested and obtained the relevant Specifeca tion speeification of clutch control; Evaluation system is confirmed the test sample data corresponding to handling the related of comfort level according to fuzzy evaluation method and grey correlation are theoretical, thereby confirms whole comfortable grade.
2. method according to claim 1; It is characterized in that: testing apparatus comprises detection platform, clutch coupling device for exerting, clutch coupling fixing device for installing, clutch coupling parameter detecting sensor; Clutch coupling is detected break away from the real vehicle operation, utilize the separation and the cohesive process of device for exerting simulated clutch.
3. method according to claim 1; It is characterized in that: real vehicle operation simulation system comprises clutch pedal, transmission master cylinder, wheel cylinder, vacuum booster, release bearing, driver seat and the simulation display panel that real vehicle uses, and eliminates in the operating process because the variation of the clutch coupling detected parameters that other factors of outside such as seat, kinematic train, pedal cause.
4. method according to claim 1; It is characterized in that: evaluation system comprises operational computations machine, data collecting card, database, analysis software; The signal that the acquisition testing sensor sends changes; Carry out data storage, analysis and processing, utilize analysis software to judge the comfortableness grade of clutch coupling.
5. method according to claim 4; It is characterized in that: when clutch coupling is tested; Sensor records this clutch coupling performance objective parameter; Computing machine is according to the degree of membership of position calculation each parameter of each parameter between the different brackets scope, and then with the degree of association of this sample data of grey correlation Theoretical Calculation for each comfortable grade, thereby judge the overall comfort evaluation that obtains clutch coupling.
6. method according to claim 1; It is characterized in that: the opinion rating to the clutch coupling running parameter comprises 5 grades; That is: very uncomfortable, uncomfortable, general, comfortable, very comfortable, preserve degree of membership and the degree of association of objective parameter in the evaluation function database with respect to these five grades.
7. method according to claim 6 is characterized in that: the membership function that the degree of membership of the opinion rating of each parameter is calculated is adopted " fall half trapezoidal " structure.
8. method according to claim 7 is characterized in that: in order to reflect the effect of each parameter index in evaluation, can carry out weighting with respect to the situation that departs from of each grade mean value according to each index, depart from manyly more, weighting is big more; Available following formula calculates:
In the formula:
is the weight of i parameter of k sample;
is the value of i parameter of k sample, and
is the normative reference of i parameter.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107818667A (en) * | 2016-09-14 | 2018-03-20 | 上汽通用汽车有限公司 | Portable wireless tester |
| CN111160762A (en) * | 2019-12-27 | 2020-05-15 | 哈尔滨工业大学 | Driving suitability evaluation method and system based on physiological data of driver |
| CN111275332A (en) * | 2020-01-20 | 2020-06-12 | 山东大学 | System and method for evaluating quality of bulldozer blade assembly process based on fuzzy-association rule |
| CN112182742A (en) * | 2020-09-06 | 2021-01-05 | 东风汽车集团有限公司 | Optimization evaluation method and device for automobile ride comfort test |
| CN113008550A (en) * | 2021-03-04 | 2021-06-22 | 安徽全柴锦天机械有限公司 | Test method for clutch quality detection |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107818667A (en) * | 2016-09-14 | 2018-03-20 | 上汽通用汽车有限公司 | Portable wireless tester |
| CN111160762A (en) * | 2019-12-27 | 2020-05-15 | 哈尔滨工业大学 | Driving suitability evaluation method and system based on physiological data of driver |
| CN111160762B (en) * | 2019-12-27 | 2023-04-28 | 哈尔滨工业大学 | Driving suitability evaluation method and system based on physiological data of driver |
| CN111275332A (en) * | 2020-01-20 | 2020-06-12 | 山东大学 | System and method for evaluating quality of bulldozer blade assembly process based on fuzzy-association rule |
| CN111275332B (en) * | 2020-01-20 | 2022-03-18 | 山东大学 | System and method for evaluating quality of bulldozer blade assembly process based on fuzzy-association rule |
| CN112182742A (en) * | 2020-09-06 | 2021-01-05 | 东风汽车集团有限公司 | Optimization evaluation method and device for automobile ride comfort test |
| CN112182742B (en) * | 2020-09-06 | 2022-04-26 | 东风汽车集团有限公司 | Optimization evaluation method and device for automobile ride comfort test |
| CN113008550A (en) * | 2021-03-04 | 2021-06-22 | 安徽全柴锦天机械有限公司 | Test method for clutch quality detection |
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Application publication date: 20120613 |