CN104462772A - Method and system for generating efficiency pulse chart of electric car drive system - Google Patents
Method and system for generating efficiency pulse chart of electric car drive system Download PDFInfo
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Abstract
The invention discloses a method and system for generating an efficiency pulse chart of an electric car drive system. The method comprises the steps that original data sets are obtained from a rack and forms an original data set sequence, wherein the original data sets reflect the relation among the output torque, the rotation speed and the efficiency of the drive system; unqualified data sets in the original data set sequence are deleted, and a basic data set sequence is obtained; null shift processing is conducted on the basic data set sequence, and a processed data set sequence is obtained; according to the processed data set sequence, a mechanical characteristic curve is obtained; interpolation is carried out on the processed data set sequence; data sets, located outside the mechanical characteristic curve, in the processed data set sequence are deleted, and a valid data set sequence is obtained; the efficiency pulse chart is generated through the valid data set sequence. According to the method and the system, validity analysis is carried out on all data sets after interpolation, so that the finally generated efficiency pulse chart does not have inaccurate points, and then the validity of energy efficiency analysis carried out on the electric car drive system based on the efficiency pulse chart can be guaranteed.
Description
Technical field
The present invention relates to drive system of electric automobile Energy Efficiency Analysis technical field, particularly relate to drive system of electric automobile efficiency arteries and veins spectrum map generalization method and system.
Background technology
Conventional fuel oil automobile industry is faced with huge challenge because of energy shortage and climate warming, and the electric automobile of energy-conserving and environment-protective more and more receives publicity, and starts to move towards market from laboratory.
Drive system of electric automobile efficiency arteries and veins spectrogram (efficiency map figure) reflection drive-train efficiency and the relation between drive motor rotating speed and drive motor Driving Torque, wherein, drive system comprises drive motor, drive motor controller and drive motor and drive motor controller and normally to work necessary servicing unit, and drive-train efficiency is then the number percent of the output power of drive system and the ratio of power input.Because efficiency map figure can reflect the size of the drive-train efficiency under different rotating speeds, different torque intuitively, therefore, efficiency map figure has extremely important effect for the Energy Efficiency Analysis of drive system of electric automobile.
The efficiency map map generalization method of current main flow drives at electric automobile stand is adopted a little according to certain rotating speed and torque interval, then carry out according to corresponding sampled point the efficiency distribution situation that cubic interpolation emulates whole operation interval, finally by drawing a contour line, figure formation efficiency map schemes, and concrete steps are:
Step 1: drive stand to obtain reflection drive motor Driving Torque from electric automobile, each original data set of corresponding relation between drive motor rotating speed and drive-train efficiency;
Step 2: each original data set is carried out in excel zero and to waft process, obtain reduced data group;
Step 3: reduced data group is directed in matlab;
Step 4: carry out interpolation to reduced data group in matlab, obtains interpolated data group;
Step 5: utilize interpolated data group to draw with drive motor rotating speed for horizontal ordinate, the drive-train efficiency contour map being ordinate with drive motor Driving Torque, schemes as efficiency map.
Fig. 1 shows a certain drive system of electric automobile efficiency map that the generation method based on existing efficiency map obtains to scheme, due to the generation method of existing efficiency map in step 4 to after carrying out interpolation to reduced data group, not efficiency analysis is not carried out to interpolated data group, therefore, occurred the inaccurate point of more data processing in elliptic curve A in Fig. 1, this will directly affect based on the validity of efficiency map figure to the Energy Efficiency Analysis that drive system of electric automobile carries out.
Summary of the invention
The object of the embodiment of the present invention is the above-mentioned defect existed to solve existing drive system of electric automobile efficiency arteries and veins spectrum map generalization method, provides a kind of drive system of electric automobile efficiency arteries and veins spectrum map generalization method and system effectively can raising the efficiency the accuracy of arteries and veins spectrogram.
In order to solve the problem, the technical solution used in the present invention is: a kind of drive system of electric automobile efficiency arteries and veins spectrum map generalization method, comprising:
Drive stand to obtain reflection drive motor Driving Torque from electric automobile, each original data set of corresponding relation between drive motor rotating speed and drive-train efficiency, form original data set sequence;
From described original data set sequence, removing described drive motor Driving Torque corresponding to theoretical Driving Torque is the original data set of 0Nm, obtains basic data group sequence;
Carry out zero to described basic data group sequence to waft process, obtain reduced data group sequence;
According to described reduced data group sequence, obtain the mechanical characteristic of the maximum drive motor output torque under reflection different driving motor speed;
Interpolation is carried out to described reduced data group sequence, obtains interpolated data group sequence;
From the described group of interpolated data sequence, remove the data group being positioned at described mechanical characteristic outside, obtain valid data group sequence;
Utilize described valid data group sequence to draw with drive motor rotating speed for horizontal ordinate, the drive-train efficiency contour map being ordinate with drive motor Driving Torque, as described drive system of electric automobile efficiency arteries and veins spectrogram.
Preferably, described remove from described original data set sequence described drive motor Driving Torque correspond to theoretical Driving Torque be the original data set of 0Nm, obtain basic data group sequence and comprise:
From described original data set sequence, remove the original data set that described drive motor Driving Torque is less than default target torque, correspond to remove described drive motor Driving Torque the original data set that theoretical Driving Torque is 0Nm, obtain basic data group sequence.
Preferably, describedly zero carried out to described basic data group sequence to waft process, obtain reduced data group sequence and comprise:
Obtain the numerical value of drive motor Driving Torque that electric automobile drives stand under static state to show, to waft value as zero;
Drive motor Driving Torque in described basic data group sequence is deducted described zero to waft value, obtain reduced data group sequence.
Preferably, described according to described reduced data group sequence, the mechanical characteristic obtaining the maximum drive motor output torque under reflection different driving motor speed comprises:
From described reduced data group sequence, obtain the maximum drive motor output torque corresponding to each drive motor rotating speed;
Linear interpolation is carried out to the maximum drive motor output torque corresponding to each drive motor rotating speed, obtains the mechanical characteristic of the maximum drive motor output torque under reflection different driving motor speed.
Preferably, described generation method also comprises:
From described valid data group sequence, obtain drive-train efficiency and be greater than or equal to the data group of default efficiency as efficient district data group;
Calculate the ratio that described efficient district data group is shared in described valid data group sequence, obtain efficient district number percent.
In order to solve the problem, the technical solution used in the present invention is: a kind of generation system of drive system of electric automobile efficiency arteries and veins spectrogram, comprising:
Data acquisition module, for driving stand acquisition reflection drive motor Driving Torque from electric automobile, between drive motor rotating speed and drive-train efficiency, each original data set of corresponding relation, forms original data set sequence;
First data screening module, being the original data set of 0Nm for removing described drive motor Driving Torque corresponding to theoretical Driving Torque from described original data set sequence, obtaining basic data group sequence;
Zero wafts processing module, to waft process, obtain reduced data group sequence for carrying out zero to described basic data group sequence;
Mechanical property obtains module, for according to described reduced data group sequence, obtains the mechanical characteristic of the maximum drive motor output torque under reflection different driving motor speed;
Interpolating module, for carrying out interpolation to described reduced data group sequence, obtains interpolated data group sequence;
Second data screening module, for removing the data group being positioned at described mechanical characteristic outside from the described group of interpolated data sequence, obtains valid data group sequence; And,
Arteries and veins spectrogram generation module, for utilizing described valid data group sequence to draw with drive motor rotating speed for horizontal ordinate, the drive-train efficiency contour map being ordinate with drive motor Driving Torque, as described drive system of electric automobile efficiency arteries and veins spectrogram.
Preferably, described first data screening module also for removing the original data set that described drive motor Driving Torque is less than default target torque from described original data set sequence, correspond to remove described drive motor Driving Torque the original data set that theoretical Driving Torque is 0Nm, obtain basic data group sequence.
Preferably, described zero wafts processing module also for obtaining the numerical value of drive motor Driving Torque that electric automobile drives stand under static state to show, and to waft value as zero; And to waft value for the drive motor Driving Torque in described basic data group sequence being deducted described zero, obtain reduced data group sequence.
Preferably, described mechanical property obtains module also for from described reduced data group sequence, obtains the maximum drive motor output torque corresponding to each drive motor rotating speed; And for carrying out linear interpolation to the maximum drive motor output torque corresponding to each drive motor rotating speed, obtain the mechanical characteristic of the maximum drive motor output torque under reflection different driving motor speed.
Preferably, described generation system also comprises:
Efficient district computing module, for from described valid data group sequence, obtains drive-train efficiency and is greater than or equal to the data group of default efficiency as efficient district data group; And for calculating described efficient district data group ratio shared in described valid data group sequence, obtain efficient district number percent.
Beneficial effect of the present invention is, drive system of electric automobile efficiency arteries and veins spectrum map generalization method and system of the present invention are first according to the real data driving bench test gained from electric automobile, obtain the mechanical characteristic of the maximum drive motor output torque under reflection different driving motor speed, this makes this mechanical characteristic more meet the actual operating mode of drive motor relative to the theoretical mechanical characteristic of identical drive motor; On this basis, the present invention, by removing the data group being positioned at obtained mechanical characteristic outside in interpolated data group sequence, can obtain the valid data group sequence meeting drive motor actual operating mode; Therefore, based on this valid data group sequence draw with drive motor rotating speed for horizontal ordinate, to not be there is inaccurate point in the drive-train efficiency contour map being ordinate with drive motor Driving Torque, and then can ensure based on the validity of efficiency map figure to the Energy Efficiency Analysis that drive system of electric automobile carries out.
Accompanying drawing explanation
Fig. 1 shows the efficiency arteries and veins spectrogram obtained based on existing drive system of electric automobile efficiency arteries and veins spectrum map generalization method;
Fig. 2 shows the process flow diagram of a kind of embodiment according to drive system of electric automobile efficiency arteries and veins spectrum map generalization method of the present invention;
Fig. 3 shows the efficiency arteries and veins spectrogram obtained based on the drive system of electric automobile efficiency arteries and veins spectrum map generalization method shown in Fig. 2;
Fig. 4 shows a kind of frame principle figure implementing structure of the generation system according to drive system of electric automobile efficiency arteries and veins spectrogram of the present invention.
Embodiment
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Being exemplary below by the embodiment be described with reference to the drawings, only for explaining the present invention, and can not limitation of the present invention being interpreted as.
The inaccurate point of more data processing is there is in the present invention in order to solve in the drive system of electric automobile efficiency arteries and veins spectrogram (efficiency map figure) based on existing generation method acquisition, and then directly affect based on the problem of efficiency map figure to the validity of the Energy Efficiency Analysis that drive system of electric automobile carries out, there is provided a kind of generation method newly, this generation method comprises the steps: as shown in Figure 2
Step S1: drive stand to obtain reflection drive motor Driving Torque from electric automobile, each original data set of corresponding relation between drive motor rotating speed and drive-train efficiency, forms original data set sequence; Such as, original data set sequence comprises three row, be respectively drive motor Driving Torque row, drive motor rotating speed row and drive-train efficiency row, this makes to reflect that often row three data of drive motor Driving Torque, drive motor rotating speed and drive-train efficiency form an original data set.
Step S2: removing drive motor Driving Torque corresponding to theoretical Driving Torque from original data set sequence is the original data set of 0Nm, obtains basic data group sequence; At this, such as electric automobile drives stand to be 10Nm for the sampling interval of drive motor Driving Torque, then sampled point is respectively 0Nm, 10Nm, 20Nm, 30Nm ... due to when theoretical Driving Torque is 0Nm, electric automobile drives stand to remain static, corresponding drive-train efficiency will be 0, the existence of these data will affect the accuracy of the group of the interpolated data sequence obtained subsequently through interpolation, and therefore needing from original data set sequence, to remove drive motor Driving Torque corresponding to theoretical Driving Torque is the original data set of 0Nm.
Step S3: by the impact of various factors, the drive motor Driving Torque that electric automobile drives stand under static state to export is not 0Nm, exist and zero to waft, therefore need, in this step, zero is carried out to basic data group sequence and to waft process, obtain reduced data group sequence.
Step S4: according to reduced data group sequence, obtain the mechanical characteristic of the maximum drive motor output torque under reflection different driving motor speed, this mechanical characteristic is owing to being the test figure generation according to driving bench test gained from electric automobile, therefore the theoretical mechanical characteristic of relatively identical drive motor will more meet the actual operating mode of drive motor, and then can improve the accuracy of screening valid data group from interpolated data group sequence.
Step S5: carry out interpolation to reduced data group sequence, obtains interpolated data group sequence, can adopt the interpolation method such as linear interpolation, contiguous method interpolation here, preferably adopt linear interpolation method.
Step S6: remove the data group being positioned at mechanical characteristic outside from interpolated data group sequence, obtain valid data group sequence, be about in interpolated data group sequence each data group be projected to this mechanical characteristic institute in the plane, and remove the data group corresponding to the subpoint being positioned at this mechanical characteristic outside.
Step S7: utilize valid data group sequence to draw with drive motor rotating speed for horizontal ordinate, the drive-train efficiency contour map being ordinate with drive motor Driving Torque, as described drive system of electric automobile efficiency arteries and veins spectrogram.
Generation method of the present invention utilizes the mechanical characteristic that obtains to carry out efficiency analysis to each data group in interpolated data group sequence, and from interpolated data group sequence, eliminate each invalid data group of the mechanical characteristic not meeting drive motor reality, obtain valid data group sequence, this can make this valid data group sequence meet drive motor actual operating mode completely; Therefore as shown in Figure 3, based on this valid data group sequence draw with drive motor rotating speed for horizontal ordinate, to not be there is inaccurate point in the drive-train efficiency contour map being ordinate with drive motor Driving Torque, and then can ensure based on the validity of efficiency map figure to the Energy Efficiency Analysis that drive system of electric automobile carries out.
In order to can automatically remove drive motor Driving Torque correspond to theoretical Driving Torque be the original data set of 0Nm, in above-mentioned steps S2 2 remove from original data set sequence drive motor Driving Torque correspond to theoretical Driving Torque be the original data set of 0Nm, obtain basic data group sequence may further be: from original data set sequence, remove the original data set that drive motor Driving Torque is less than default target torque, correspond to remove described drive motor Driving Torque the original data set that theoretical Driving Torque is 0Nm, obtain basic data group sequence.The actual drive motor Driving Torque driving stand to export under the theoretical Driving Torque of 0Nm due to electric automobile will not be 0Nm, therefore, this target torque must be greater than 0Nm, and the setting of target torque should be less than the actual drive motor torque of next sampled point being such as 10Nm as far as possible, otherwise will useful original data set be removed, affect the precision of follow-up interpolation, so the too small of target torque setting may retain underproof original data set, the excessive of target torque setting may take out useful original data set, those skilled in the art can be as the case may be, have the impact considering that setting is too small and excessive concurrently, this target torque is chosen according to sampling interval and experience, take sampling interval as 10Nm be example, this target torque can be chosen for 3Nm.
Carry out zero to basic data group sequence in above-mentioned steps S3 to waft process, obtaining reduced data group sequence can comprise the steps: further
Step S31: obtain the numerical value of drive motor Driving Torque that electric automobile drives stand under static state to show, to waft value as zero.
Step S32: the drive motor Driving Torque in basic data group sequence is deducted zero and to waft value, obtain reduced data group sequence.
According to described reduced data group sequence in above-mentioned steps S4, the mechanical characteristic obtaining the maximum drive motor output torque under reflection different driving motor speed can comprise the steps: further
Step S41: from reduced data group sequence, obtains the maximum drive motor output torque corresponding to each drive motor rotating speed.
Step S42: carry out linear interpolation to the maximum drive motor output torque corresponding to each drive motor rotating speed, obtains the mechanical characteristic of the maximum drive motor output torque under reflection different driving motor speed.
When carrying out Energy Efficiency Analysis to drive system of electric automobile, efficient district this parameter of number percent considered by usual needs, and therefore, generation method of the present invention also add the step obtaining efficient district number percent on the basis of formation efficiency arteries and veins spectrogram, convenient for users, this step is specially:
Step S8: from valid data group sequence, obtain drive-train efficiency and be greater than or equal to the data group of default efficiency as efficient district data group, Chinese national standard specifies that the workspace that drive-train efficiency is greater than or equal to 80% is defined as efficient district, therefore, for Chinese market, this default efficiency should be set as 80%.
Step S9: calculate the ratio that efficient district data group is shared in valid data group sequence, obtain efficient district number percent.
To compose map generalization method corresponding with above-mentioned drive system of electric automobile efficiency arteries and veins, as shown in Figure 4, the generation system of drive system of electric automobile efficiency arteries and veins spectrogram of the present invention comprises data acquisition module 1, first data screening module 2, zero wafts processing module 3, mechanical property obtains module 4, interpolating module 5, second data screening module 6, arteries and veins spectrogram generation module 7, this data acquisition module 1 obtains reflection drive motor Driving Torque for driving stand from electric automobile, each original data set of corresponding relation between drive motor rotating speed and drive-train efficiency, form original data set sequence, this the first data screening module 2 is the original data set of 0Nm for removing described drive motor Driving Torque corresponding to theoretical Driving Torque from described original data set sequence, obtains basic data group sequence, this zero processing module 3 of wafing to be waftd process for carrying out zero to described basic data group sequence, obtains reduced data group sequence, this mechanical property obtains module 4 for according to described reduced data group sequence, obtains the mechanical characteristic of the maximum drive motor output torque under reflection different driving motor speed, this interpolating module 5, for carrying out interpolation to described reduced data group sequence, obtains interpolated data group sequence, this the second data screening module 6, for removing the data group being positioned at described mechanical characteristic outside from the described group of interpolated data sequence, obtains valid data group sequence, this arteries and veins spectrogram generation module 7 is drawn with drive motor rotating speed for horizontal ordinate for utilizing described valid data group sequence, and the drive-train efficiency contour map being ordinate with drive motor Driving Torque, as described drive system of electric automobile efficiency arteries and veins spectrogram.
Above-mentioned first data screening module 2 is further used for removing from described original data set sequence the original data set that described drive motor Driving Torque is less than default target torque, correspond to remove described drive motor Driving Torque the original data set that theoretical Driving Torque is 0Nm, obtain basic data group sequence.
Above-mentioned zero processing module 3 of wafing is further used for obtaining the numerical value of drive motor Driving Torque that electric automobile drives stand under static state to show, and to waft value as zero; And to waft value for the drive motor Driving Torque in described basic data group sequence being deducted described zero, obtain reduced data group sequence.
Above-mentioned mechanical property obtains module 4 and is further used for from described reduced data group sequence, obtains the maximum drive motor output torque corresponding to each drive motor rotating speed; And for carrying out linear interpolation to the maximum drive motor output torque corresponding to each drive motor rotating speed, obtain the mechanical characteristic of the maximum drive motor output torque under reflection different driving motor speed.
Further, generation system of the present invention also can comprise efficient district computing module (not shown), this efficient district computing module is used for from described valid data group sequence, obtains drive-train efficiency and is greater than or equal to the data group of default efficiency as efficient district data group; And for calculating described efficient district data group ratio shared in described valid data group sequence, obtain efficient district number percent.
Each embodiment in this instructions all adopts the mode of going forward one by one to describe, between each embodiment identical similar part mutually see, what each embodiment stressed is the difference with other embodiments.Especially, for module, system embodiment, because it is substantially similar to embodiment of the method, so describe fairly simple, relevant part illustrates see the part of embodiment of the method.Module described above, system embodiment are only schematic, the wherein said unit illustrated as separating component or can may not be and physically separates, parts as unit display can be or may not be physical location, namely can be positioned at a place, or also can be distributed in multiple network element.Some or all of unit wherein can be selected according to the actual needs to realize the object of the present embodiment scheme.Those of ordinary skill in the art, when not paying creative work, are namely appreciated that and implement.
Structure of the present invention, feature and action effect is described in detail above according to graphic shown embodiment; the foregoing is only preferred embodiment of the present invention; but the present invention does not limit practical range with shown in drawing; every change done according to conception of the present invention; or be revised as the Equivalent embodiments of equivalent variations; do not exceed yet instructions with diagram contain spiritual time, all should in protection scope of the present invention.
Claims (10)
1. a drive system of electric automobile efficiency arteries and veins spectrum map generalization method, is characterized in that, comprising:
Drive stand to obtain reflection drive motor Driving Torque from electric automobile, each original data set of corresponding relation between drive motor rotating speed and drive-train efficiency, form original data set sequence;
From described original data set sequence, removing described drive motor Driving Torque corresponding to theoretical Driving Torque is the original data set of 0Nm, obtains basic data group sequence;
Carry out zero to described basic data group sequence to waft process, obtain reduced data group sequence;
According to described reduced data group sequence, obtain the mechanical characteristic of the maximum drive motor output torque under reflection different driving motor speed;
Interpolation is carried out to described reduced data group sequence, obtains interpolated data group sequence;
From the described group of interpolated data sequence, remove the data group being positioned at described mechanical characteristic outside, obtain valid data group sequence;
Utilize described valid data group sequence to draw with drive motor rotating speed for horizontal ordinate, the drive-train efficiency contour map being ordinate with drive motor Driving Torque, as described drive system of electric automobile efficiency arteries and veins spectrogram.
2. generation method according to claim 1, is characterized in that, described remove from described original data set sequence described drive motor Driving Torque correspond to theoretical Driving Torque be the original data set of 0Nm, obtain basic data group sequence and comprise:
From described original data set sequence, remove the original data set that described drive motor Driving Torque is less than default target torque, correspond to remove described drive motor Driving Torque the original data set that theoretical Driving Torque is 0Nm, obtain basic data group sequence.
3. generation method according to claim 1, is characterized in that, describedly carries out zero to described basic data group sequence and to waft process, obtains reduced data group sequence and comprises:
Obtain the numerical value of drive motor Driving Torque that electric automobile drives stand under static state to show, to waft value as zero;
Drive motor Driving Torque in described basic data group sequence is deducted described zero to waft value, obtain reduced data group sequence.
4. generation method according to claim 1, is characterized in that, described according to described reduced data group sequence, and the mechanical characteristic obtaining the maximum drive motor output torque under reflection different driving motor speed comprises:
From described reduced data group sequence, obtain the maximum drive motor output torque corresponding to each drive motor rotating speed;
Linear interpolation is carried out to the maximum drive motor output torque corresponding to each drive motor rotating speed, obtains the mechanical characteristic of the maximum drive motor output torque under reflection different driving motor speed.
5. generation method according to any one of claim 1 to 4, is characterized in that, described generation method also comprises:
From described valid data group sequence, obtain drive-train efficiency and be greater than or equal to the data group of default efficiency as efficient district data group;
Calculate the ratio that described efficient district data group is shared in described valid data group sequence, obtain efficient district number percent.
6. a generation system for drive system of electric automobile efficiency arteries and veins spectrogram, is characterized in that, comprising:
Data acquisition module, for driving stand acquisition reflection drive motor Driving Torque from electric automobile, between drive motor rotating speed and drive-train efficiency, each original data set of corresponding relation, forms original data set sequence;
First data screening module, being the original data set of 0Nm for removing described drive motor Driving Torque corresponding to theoretical Driving Torque from described original data set sequence, obtaining basic data group sequence;
Zero wafts processing module, to waft process, obtain reduced data group sequence for carrying out zero to described basic data group sequence;
Mechanical property obtains module, for according to described reduced data group sequence, obtains the mechanical characteristic of the maximum drive motor output torque under reflection different driving motor speed;
Interpolating module, for carrying out interpolation to described reduced data group sequence, obtains interpolated data group sequence;
Second data screening module, for removing the data group being positioned at described mechanical characteristic outside from the described group of interpolated data sequence, obtains valid data group sequence; And,
Arteries and veins spectrogram generation module, for utilizing described valid data group sequence to draw with drive motor rotating speed for horizontal ordinate, the drive-train efficiency contour map being ordinate with drive motor Driving Torque, as described drive system of electric automobile efficiency arteries and veins spectrogram.
7. generation system according to claim 6, it is characterized in that, described first data screening module also for removing the original data set that described drive motor Driving Torque is less than default target torque from described original data set sequence, correspond to remove described drive motor Driving Torque the original data set that theoretical Driving Torque is 0Nm, obtain basic data group sequence.
8. generation system according to claim 6, is characterized in that, described zero wafts processing module also for obtaining the numerical value of drive motor Driving Torque that electric automobile drives stand under static state to show, and to waft value as zero; And to waft value for the drive motor Driving Torque in described basic data group sequence being deducted described zero, obtain reduced data group sequence.
9. generation system according to claim 6, is characterized in that, described mechanical property obtains module also for from described reduced data group sequence, obtains the maximum drive motor output torque corresponding to each drive motor rotating speed; And for carrying out linear interpolation to the maximum drive motor output torque corresponding to each drive motor rotating speed, obtain the mechanical characteristic of the maximum drive motor output torque under reflection different driving motor speed.
10. the generation system according to any one of claim 6 to 9, is characterized in that, described generation system also comprises:
Efficient district computing module, for from described valid data group sequence, obtains drive-train efficiency and is greater than or equal to the data group of default efficiency as efficient district data group; And for calculating described efficient district data group ratio shared in described valid data group sequence, obtain efficient district number percent.
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| CN106357189B (en) * | 2016-10-10 | 2019-04-16 | 金龙联合汽车工业（苏州）有限公司 | A kind of design method of automobile drive motor system effectiveness distribution |
| CN106504366A (en) * | 2016-10-31 | 2017-03-15 | 四川岭傲信息技术有限公司 | A kind of railway locomotive wind regime data analysing method and intelligent management system |
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| CN110675394A (en) * | 2019-09-29 | 2020-01-10 | 广西玉柴机器股份有限公司 | Method for identifying efficient region of motor efficiency MAP graph |
| CN110675394B (en) * | 2019-09-29 | 2023-05-26 | 广西玉柴机器股份有限公司 | Method for identifying efficient area of MAP (MAP) of motor efficiency |
| CN112907694A (en) * | 2019-12-04 | 2021-06-04 | 中车时代电动汽车股份有限公司 | Efficiency test data processing method and device for driving motor system |
| CN111413105A (en) * | 2020-03-30 | 2020-07-14 | 江西江铃集团新能源汽车有限公司 | Efficiency test evaluation method for electric vehicle power system |
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| CN112781886A (en) * | 2020-12-17 | 2021-05-11 | 中国汽车技术研究中心有限公司 | Pure electric vehicle overall efficiency testing method, electronic equipment and medium |
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