CN108871812A - Evaluation method, device, storage medium and the system of the smooth performance of tire - Google Patents
Evaluation method, device, storage medium and the system of the smooth performance of tire Download PDFInfo
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- CN108871812A CN108871812A CN201810603946.5A CN201810603946A CN108871812A CN 108871812 A CN108871812 A CN 108871812A CN 201810603946 A CN201810603946 A CN 201810603946A CN 108871812 A CN108871812 A CN 108871812A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
- G01M17/02—Tyres
Abstract
The present invention proposes that evaluation method, device, storage medium and the system of a kind of smooth performance of tire, method include：Obtain the longitudinal force response signal data and vertical force response signal data of tire convex block impact test；Bandpass filtering is carried out to longitudinal force response signal data and vertical force response signal data, the filtering of personnel's weight is carried out to the data after bandpass filtering；Hilbert transform is carried out to the filtered data of personnel's weight and obtains absolute envelope data；The impact strength index amount that tire is calculated in slope is carried out to absolute envelope data, areal calculation is carried out to absolute envelope data and obtains the residual jitter index amount of tire；Refer to the smooth performance of scalar sum residual jitter index amount evaluation tire according to the impact strength of tire.The technical problems such as the present invention solves to be needed first to manufacture sample car when judging the smooth performance of tire in the prior art, and the tire bring evaluation for needing to constantly change assessment is at high cost, the development cycle is long, working efficiency is low and evaluation result is inaccurate.
Description
Technical field
The present invention relates to the evaluation method of vehicular field more particularly to a kind of smooth performance of tire, device, storage medium and
System.
Background technique
In vehicle performance development process, ride comfort is an important performance indexes in vehicle performance, its direct relation
To the riding comfort of occupant.Influence vehicle ride comfort cause be known as suspension system performance, suspend performance and tyre performance etc.,
And unique medium of the tire as vehicle and road excitation, smooth performance are even more the ride comfort for directly affecting vehicle.
The exploitation of performance smooth for tire is presently mainly carried out by the method for subjective evaluation, after producing sample car,
The opinion score of the smooth performance of tire is provided by subjective comparative's method by vehicle performance commissioning engineer.For this
Method, a necessary premise are exactly to need to manufacture sample car, and required assessment is needed to constantly change during subjective evaluation
Tire, it is time-consuming and laborious, and higher cost, development cycle are longer.
Summary of the invention
Based on problem above, the present invention proposes the evaluation method of smooth performance of tire a kind of, device, storage medium and is
System solves and needs first to manufacture sample car when judging the smooth performance of tire in the prior art, needs to constantly change the tire of assessment
The technical problems such as bring evaluation is at high cost, the development cycle is long, working efficiency is low and evaluation result is inaccurate.
The present invention proposes a kind of evaluation method of smooth performance of tire, including：
Obtain the longitudinal force response signal data and vertical force response signal data of tire convex block impact test；
Bandpass filtering is carried out to longitudinal force response signal data and vertical force response signal data, to the number after bandpass filtering
According to progress personnel's weight filtering；
Hilbert transform is carried out to the filtered data of personnel's weight and obtains absolute envelope data；
The impact strength index amount that tire is calculated in slope is carried out to absolute envelope data, absolute envelope data is carried out
Areal calculation obtains the residual jitter index amount of tire；
Refer to the smooth performance of scalar sum residual jitter index amount evaluation tire according to the impact strength of tire.
In addition, bandpass filter is Butterworth filter.
In addition, personnel's weight filter is finite impulse response filter, used in finite impulse response filter
Personnel's weight coefficient is to test to obtain according to multiple subjective scoring.
In addition, the longitudinal force response signal data and vertical force response signal data for obtaining tire convex block impact test
Including：
After preheating to tire, the data for carrying out multiple tire convex block impact test to tire are averaging processing to obtain
The longitudinal force response signal data and vertical force response signal data of tire convex block impact test.
In addition, described carry out the impact strength index amount that tire is calculated in slope to absolute envelope data, to absolute packet
Network data carry out areal calculation and obtain the residual jitter index amount of tire：
After carrying out slope calculating to absolute envelope data, at the processing of rolling average window and longitudinal and vertical response weighting
Reason obtain the impact strength index amount of tire, to absolute envelope data carry out areal calculation after, by rolling average window handle and
Longitudinal and vertical response weighting handles to obtain the residual jitter index amount of tire.
The present invention also proposes a kind of evaluating apparatus of smooth performance of tire, including：
Module is obtained, for obtaining the longitudinal force response signal data and vertical force response signal of tire convex block impact test
Data；
Filter module, it is right for carrying out bandpass filtering to longitudinal force response signal data and vertical force response signal data
Data after bandpass filtering carry out the filtering of personnel's weight；
Conversion module obtains absolute envelope data for carrying out Hilbert transform to the filtered data of personnel's weight；
Computing module, for carrying out the impact strength index amount that tire is calculated in slope to absolute envelope data, to exhausted
Areal calculation is carried out to envelope data and obtains the residual jitter index amount of tire；
Evaluation module refers to the ride comfort of scalar sum residual jitter index amount evaluation tire for the impact strength according to tire
Energy.
The present invention also proposes that a kind of storage medium, the storage medium store computer instruction, described in computer execution
When computer instruction, for executing the evaluation method of the smooth performance of tire described in any of the above embodiments.
The present invention also proposes a kind of evaluation system of smooth performance of tire, including at least one processor；And with it is described
The memory of at least one processor communication connection；Wherein, the memory is stored with and can be executed by one processor
Instruction, described instruction is executed by least one described processor, so that at least one described processor can：
Obtain the longitudinal force response signal data and vertical force response signal data of tire convex block impact test；
Bandpass filtering is carried out to longitudinal force response signal data and vertical force response signal data, to the number after bandpass filtering
According to progress personnel's weight filtering；
Hilbert transform is carried out to the filtered data of personnel's weight and obtains absolute envelope data；
The impact strength index amount that tire is calculated in slope is carried out to absolute envelope data, absolute envelope data is carried out
Areal calculation obtains the residual jitter index amount of tire；
Refer to the smooth performance of scalar sum residual jitter index amount evaluation tire according to the impact strength of tire.
By using above-mentioned technical proposal, have the advantages that：
The present invention solves to be needed first to manufacture sample car when judging the smooth performance of tire in the prior art, is needed to constantly change
The technologies such as the tire bring evaluation of assessment is at high cost, the development cycle is long, working efficiency is low and evaluation result is inaccurate are asked
Topic.The evaluation method of the smooth performance of tire provided by the invention has comprehensively considered tire self-characteristic and occupant experiences weight
Influence, can more accurately reflect that tire is installed to the smooth performance that Che Shangshi occupant is perceived, pass through what is objectively evaluated
Mode reduces the development cost in the smooth performance development process of tire, shortens the development cycle.
Detailed description of the invention
Fig. 1 is the flow chart of the evaluation method of the smooth performance of tire provided by one embodiment of the present invention；
Fig. 2 is the flow chart of the evaluation method of the smooth performance of tire provided by one embodiment of the present invention；
Fig. 3 is data processed result schematic diagram in Fig. 2；
Fig. 4 is the block diagram of the evaluating apparatus of the smooth performance of tire provided by one embodiment of the present invention.
Specific embodiment
Below in conjunction with specific embodiment and attached drawing, the present invention is further described in detail.It is only intended to explain in detail
Specific embodiments of the present invention are stated, any restrictions are not generated to the present invention, protection scope of the present invention is with claims
Subject to.
Referring to Fig.1, the present invention proposes a kind of evaluation method of smooth performance of tire, including：
Step S001 obtains the longitudinal force response signal data and vertical force response signal number of tire convex block impact test
According to；
Step S002 carries out bandpass filtering to longitudinal force response signal data and vertical force response signal data, to band logical
Filtered data carry out the filtering of personnel's weight；
Step S003 carries out Hilbert transform to the filtered data of personnel's weight and obtains absolute envelope data；
Step S004 carries out the impact strength index amount that tire is calculated in slope to absolute envelope data, to absolute packet
Network data carry out areal calculation and obtain the residual jitter index amount of tire；
Step S005 refers to the smooth performance of scalar sum residual jitter index amount evaluation tire according to the impact strength of tire.
In step S001, convex block impact test first is carried out to tire, tyre performance is tested, is divided into steady-state characteristic examination
It tests and two kinds of dynamic characteristic test.Dynamic characteristic test is wherein convex block impact test necessary to Tire testing and modeling
(Cleat Test) is then that dynamic property of tyre tests mostly important one of test.Tire convex block impact test is divided into convex block 90
Degree and 45 degree of two kinds of placements illustrate so that 90 degree of convex block are placed and tested as an example in the present embodiment.
Experimental data is obtained from experiment：The longitudinal force response signal data and vertical force response signal data of tire.If
It needs to carry out smooth performance evaluation to multiple tires, convex block impact test can be carried out to multiple tires simultaneously, measure different kinds of tyre
Longitudinal force response signal data and vertical force response signal data.
In step S002, band logical filter is carried out to longitudinal force response signal data and vertical force response signal data first
Wave, such as Butterworth filter can be used, band logical filter is carried out to longitudinal force response signal data and vertical force response signal data
Wave.To after bandpass filtering data carry out the filtering of personnel's weight, why carry out personnel's weight filtering be because：If only using
Simple filtering mode can be carried out evaluation to tire ride comfort, according to the longitudinal force response signal data and vertical force of multiple tires
The peak value of curve of data after response signal data is filtered judges the smooth performance of tire, can obtain having for some mistakes
The conclusion of deviation, since this mode only judges according to single factor, the reality that occupant is not added is experienced by bus, although taking turns sometimes
The smooth performance of tire is very high, but ought actually on road surface when driving, the impression of occupant is but and bad, thus in the present embodiment will
The filtering of personnel's weight introduces, and after carrying out the filtering of personnel's weight, curve can more reflect the smooth performance of true tire.
In step S003, Hilbert transform is carried out to the filtered data of personnel's weight and obtains absolute envelope data,
Refer to that scalar sum residual jitter index amount provides absolute envelope data for the subsequent impact strength for calculating tire.
In step S004, the impact strength index amount that tire is calculated in slope is carried out to absolute envelope data, to exhausted
Areal calculation is carried out to envelope data and obtains the residual jitter index amount of tire.Due to evaluation index have tire impact strength and
The residual jitter of tire.The superiority and inferiority of the impact strength of tire responds strong when can reflect tire by external impacts incentive action
It is weak, it is characterized by response slope.The superiority and inferiority of the residual jitter of tire can reflect tire by vibration deformation after external impacts excitation
The ability for absorbing energy and damping flicker passes through response envelope characterization.So passing through above-mentioned filtering in the present embodiment
The impact strength that tire is calculated refers to scalar sum residual jitter index amount.
In step S005, refer to that scalar sum residual jitter index is measured to the flat of tire according to the impact strength of tire
Pliable energy, or the impact strength of more multiple tires refer to that scalar sum residual jitter index amount provides the ride comfort of different kinds of tyre
Energy.
The present embodiment solves to be needed first to manufacture sample car when judging the smooth performance of tire in the prior art, is needed constantly more
The tire bring for changing assessment evaluates the technologies such as at high cost, the development cycle is long, working efficiency is low and evaluation result is inaccurate
Problem.The evaluation method of the smooth performance of tire provided in this embodiment has comprehensively considered tire self-characteristic and occupant experiences weight
The influence of factor can more accurately reflect that tire is installed to the smooth performance that Che Shangshi occupant is perceived, be commented by objective
The mode of valence reduces the development cost in the smooth performance development process of tire, shortens the development cycle.
Referring to Fig. 2, the present invention also proposes a kind of evaluation method of smooth performance of tire, including：
Step S201 obtains the longitudinal force response signal data and vertical force response signal number of tire convex block impact test
According to；
The longitudinal force response signal data for obtaining tire convex block impact test and vertical force response signal data include：
After preheating to tire, the data for carrying out multiple tire convex block impact test to tire are averaging processing to obtain
The longitudinal force response signal data and vertical force response signal data of tire convex block impact test.
For example, size of lug height width 10mmx20mm, test tire pressure is 240kpa, and tire carries out 3 points before carrying out convex block impact
Clock preheating, preheating tire rolling speed are 30kph, and test tire speed is 60kph, and tyre load is loaded as 340kg.Number is adopted logical
Road signal is longitudinal force of tire and vertical force-responsive, sample frequency 2000Hz, and in order to reduce test error, every tires can be into
Row eight times tests, are then averaging processing test result data.
Step S202 carries out bandpass filtering to longitudinal force response signal data and vertical force response signal data, to band logical
Filtered data carry out the filtering of personnel's weight；Optionally, bandpass filter is Butterworth filter；Optionally, Ren Yuanquan
Weight filter is finite impulse response filter, and the personnel's weight coefficient used in finite impulse response filter is according to more
Secondary subjective scoring is tested to obtain.
Bandpass filtering is carried out to longitudinal force response signal data and vertical force response signal data, such as carries out 5-70Hz's
Butterworth filter, the transmission function of Butterworth filter may be selected in BP (Band Pass) bandpass filtering, bandpass filter
For：
Wherein, n is filter order, and a (n) and b (n) are filter coefficient.
Then, personnel's weight (Human Weighting) filtering is carried out to the data after bandpass filtering, limited arteries and veins can be used
Punching response (Finite Impulse Response) filter, is constructed by order transfer function form：
Wherein, ζ and ω0It scores to test to conclude by multiple occupant and obtain.
ζ and ω0It is the parameter that second order passes letter, determines the shape and filter effect for passing letter, H (s) generation that formula (2) obtains
One filter of table characterizes personnel's weights influence, and different curves illustrate the filter effect of each filter in Fig. 3.
Step S203 carries out Hilbert transform to the filtered data of personnel's weight and obtains absolute envelope data；
For absolute envelope, x (t) is signal Fourier transformation, and h (t) is signal unit impulse response.
Data processed result is as shown in figure 3, fine line is original force response curve, after band circular point is marked as bandpass filtering
Curve, chain-dotted line be bandpass filtering and the filtered curve of personnel's weight, band black circle be marked as absolute envelope curve.
Step S204 carries out the impact strength index amount that tire is calculated in slope to absolute envelope data, to absolute packet
Network data carry out areal calculation and obtain the residual jitter index amount of tire；
It is described that the impact strength index amount that tire is calculated in slope is carried out to absolute envelope data, to absolute envelope data
Carry out areal calculation and obtain the residual jitter index amount of tire include：
After carrying out slope calculating to absolute envelope data, at the processing of rolling average window and longitudinal and vertical response weighting
Reason obtain the impact strength index amount of tire, to absolute envelope data carry out areal calculation after, by rolling average window handle and
Longitudinal and vertical response weighting handles to obtain the residual jitter index amount of tire.
Rolling average window calculation method is：
Assuming that signal is 100 data points, rolling average threshold value is 30, then every 30 points are averaged.That is 1-30 point takes
First data of average out to, it is second data that 2-31 point, which is made even, and so on, it is the 71st number until 71-100 makes even
According in addition, mending 29 before the 1st data in order to guarantee that rolling average window calculates the consistency of front and back data and being put down with first
The identical value of equal data, to obtain the array after 100 new rolling averages, the calculating of rolling average window may be considered one
Fairly simple low-pass filtering.
Weighting is handled：Assuming that impact strength longitudinal direction index is IH1, weight coefficient a1, vertical index is IH2, weight
Coefficient is b1, and residual jitter longitudinal direction index is MS1, and weight coefficient a2, vertical index is MS2, weight coefficient b2, and impact is strong
Degree integration adjustment coefficient is c1 and d1, and residual jitter integration adjustment coefficient is c2 and d2, then whole impact strength index amount is
IH=(IH1*a1+IH2*b1) * c1+d1, residual jitter index amount are MS=(MS1*a2+MS2*b2) * c2+d2.
Step S205 refers to the smooth performance of scalar sum residual jitter index amount evaluation tire according to the impact strength of tire.
For example, there are 5 groups of tire test data to be handled according to the method, obtain objectively evaluating index amount after weighting as follows
Shown in table 1.
1 each group tire impact property of table objectively evaluates marking
The smooth performance of each group tire objectively evaluates superiority and inferiority and is：
A) impact strength index amount：BASE>D>B>A>C
B) residual jitter index amount：BASE>D>A>B>C
After the present embodiment is by preheating tire, the data for carrying out multiple tire convex block impact test to tire are carried out
Average treatment obtains more accurate longitudinal force response signal data and vertical force response signal data；By to absolute envelope data
After carrying out slope calculating, after carrying out areal calculation to absolute envelope data, by the processing of rolling average window and longitudinal and vertical sound
It processing should be weighted obtains the impact strength of tire and refer to scalar sum residual jitter index amount, make the evaluation knot to the smooth performance of tire
Fruit is more accurate.
Referring to Fig. 4, the present invention proposes a kind of evaluating apparatus of smooth performance of tire, including：
Obtain module 301, for obtain tire convex block impact test longitudinal force response signal data and vertical force-responsive
Signal data；
Filter module 302, for carrying out bandpass filtering to longitudinal force response signal data and vertical force response signal data,
The filtering of personnel's weight is carried out to the data after bandpass filtering；
Conversion module 303 obtains absolute envelope number for carrying out Hilbert transform to the filtered data of personnel's weight
According to；
Computing module 304, it is right for carrying out the impact strength index amount that tire is calculated in slope to absolute envelope data
Absolute envelope data carries out areal calculation and obtains the residual jitter index amount of tire；
Evaluation module 305 refers to the flat of scalar sum residual jitter index amount evaluation tire for the impact strength according to tire
Pliable energy.
The present invention proposes that a kind of storage medium, the storage medium store computer instruction, when computer executes the meter
When calculation machine instructs, for executing the evaluation method of the smooth performance of tire described in any of the above-described a embodiment.
The present invention proposes a kind of evaluation system of smooth performance of tire, which is characterized in that including at least one processor；With
And the memory being connect at least one described processor communication；Wherein, be stored with can be by one processing for the memory
The instruction that device executes, described instruction is executed by least one described processor, so that at least one described processor can：
Obtain the longitudinal force response signal data and vertical force response signal data of tire convex block impact test；
Bandpass filtering is carried out to longitudinal force response signal data and vertical force response signal data, to the number after bandpass filtering
According to progress personnel's weight filtering；
Hilbert transform is carried out to the filtered data of personnel's weight and obtains absolute envelope data；
The impact strength index amount that tire is calculated in slope is carried out to absolute envelope data, absolute envelope data is carried out
Areal calculation obtains the residual jitter index amount of tire；
Refer to the smooth performance of scalar sum residual jitter index amount evaluation tire according to the impact strength of tire.
Above-described is only the principle of the present invention and preferred embodiment.It should be pointed out that for the common skill of this field
For art personnel, on the basis of the principle of the invention, several other modifications can also be made, also should be regarded as protection model of the invention
It encloses.
Claims (8)
1. a kind of evaluation method of the smooth performance of tire, which is characterized in that including：
Obtain the longitudinal force response signal data and vertical force response signal data of tire convex block impact test；
Bandpass filtering is carried out to longitudinal force response signal data and vertical force response signal data, to the data after bandpass filtering into
The filtering of administrative staff's weight；
Hilbert transform is carried out to the filtered data of personnel's weight and obtains absolute envelope data；
The impact strength index amount that tire is calculated in slope is carried out to absolute envelope data, area is carried out to absolute envelope data
The residual jitter index amount of tire is calculated；
Refer to the smooth performance of scalar sum residual jitter index amount evaluation tire according to the impact strength of tire.
2. the evaluation method of the smooth performance of tire according to claim 1, which is characterized in that
Bandpass filter is Butterworth filter.
3. the evaluation method of the smooth performance of tire according to claim 1, which is characterized in that
Personnel's weight filter is finite impulse response filter, the personnel's weight system used in finite impulse response filter
Number is to test to obtain according to multiple subjective scoring.
4. the evaluation method of the smooth performance of tire according to claim 1, which is characterized in that
The longitudinal force response signal data for obtaining tire convex block impact test and vertical force response signal data include：
After preheating to tire, the data for carrying out multiple tire convex block impact test to tire are averaging processing to obtain tire
The longitudinal force response signal data and vertical force response signal data of convex block impact test.
5. the evaluation method of the smooth performance of tire according to claim 1, which is characterized in that
It is described that the impact strength index amount that tire is calculated in slope is carried out to absolute envelope data, absolute envelope data is carried out
The residual jitter index amount that areal calculation obtains tire includes：
After carrying out slope calculating to absolute envelope data, is handled by rolling average window and longitudinal and vertical response weighting is handled
To the impact strength index amount of tire, after carrying out areal calculation to absolute envelope data, handled by rolling average window and longitudinal
It handles to obtain the residual jitter index amount of tire with vertical response weighting.
6. a kind of evaluating apparatus of the smooth performance of tire, which is characterized in that including：
Module is obtained, for obtaining the longitudinal force response signal data and vertical force response signal number of tire convex block impact test
According to；
Filter module, for carrying out bandpass filtering to longitudinal force response signal data and vertical force response signal data, to band logical
Filtered data carry out the filtering of personnel's weight；
Conversion module obtains absolute envelope data for carrying out Hilbert transform to the filtered data of personnel's weight；
Computing module, for carrying out the impact strength index amount that tire is calculated in slope to absolute envelope data, to absolute packet
Network data carry out areal calculation and obtain the residual jitter index amount of tire；
Evaluation module refers to the smooth performance of scalar sum residual jitter index amount evaluation tire for the impact strength according to tire.
7. a kind of storage medium, which is characterized in that the storage medium stores computer instruction, when computer executes the calculating
Evaluation method when machine instructs, for the smooth performance of tire described in any one of perform claim requirement 1 to 5.
8. a kind of evaluation system of the smooth performance of tire, which is characterized in that including at least one processor；And with it is described extremely
The memory of few processor communication connection；Wherein, the memory is stored with the finger that can be executed by one processor
It enables, described instruction is executed by least one described processor, so that at least one described processor can：
Obtain the longitudinal force response signal data and vertical force response signal data of tire convex block impact test；
Bandpass filtering is carried out to longitudinal force response signal data and vertical force response signal data, to the data after bandpass filtering into
The filtering of administrative staff's weight；
Hilbert transform is carried out to the filtered data of personnel's weight and obtains absolute envelope data；
The impact strength index amount that tire is calculated in slope is carried out to absolute envelope data, area is carried out to absolute envelope data
The residual jitter index amount of tire is calculated；
Refer to the smooth performance of scalar sum residual jitter index amount evaluation tire according to the impact strength of tire.
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| CN201810603946.5A CN108871812A (en) | 2018-06-12 | 2018-06-12 | Evaluation method, device, storage medium and the system of the smooth performance of tire |
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