CN110389234A - A kind of method of automobile input shaft rotating speed acquisition - Google Patents
A kind of method of automobile input shaft rotating speed acquisition Download PDFInfo
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- CN110389234A CN110389234A CN201910499147.2A CN201910499147A CN110389234A CN 110389234 A CN110389234 A CN 110389234A CN 201910499147 A CN201910499147 A CN 201910499147A CN 110389234 A CN110389234 A CN 110389234A
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- input shaft
- rotating speed
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P21/00—Testing or calibrating of apparatus or devices covered by the preceding groups
- G01P21/02—Testing or calibrating of apparatus or devices covered by the preceding groups of speedometers
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
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- General Physics & Mathematics (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
- Control Of Transmission Device (AREA)
Abstract
The invention discloses a kind of methods of automobile input shaft rotating speed acquisition, include the following steps, S1: the determination of observed quantity, S2: gauged determination, S3: starting Simulink, S4: the operation of observed quantity, S5: the operation of initial input axis tachometer value nofones, S6: filtering processing, S7: the acquisition of program and S8: burning.The present invention passes through the speed ratio value C_ONE_TO_TWO_IO for the drive shaft speed sensor added, drive shaft speed sensor one encloses number of teeth value C_TWO_TEETH_NO, filtration coefficient C_N_FITER1 and filtration coefficient C_N_FITER2, and utilize filtering processing and corresponding calculating, obtain revised input shaft rotating speed value nofones, reach the precise measurement to input shaft rotating speed value nofones, is convenient for subsequent calibration.
Description
Technical field
The invention belongs to automobile input shaft rotating speed acquisition technique fields, and in particular to a kind of acquisition of automobile input shaft rotating speed
Method.
Background technique
Automobile is just like giving a definition: by power drive, the vehicle of the non-track carrying with 4 or 4 or more wheels, mainly
For: carrying personnel and cargo；Draw the vehicle of carrying personnel and cargo；The vehicle of specific use, automobile are used as in life more
Carry out more widely applied equipment, has been more and more widely used.
Input shaft is an axis for connecting clutch and gearbox in automobile, and function is to lead to the power of automobile engine
The control for crossing clutch is input in gearbox, the accuracy of input shaft rotating speed collection value, is demarcated to automobile, especially speed changer
Calibration play very important effect.
Currently, the revolving speed of automobile input shaft is to be surveyed by adding velocity sensor in input shaft to the revolving speed of input shaft
Amount does not consider that the numerical value of one circle of sensor gear rotation itself carries out the speed ratio value of detection and drive shaft speed sensor, by
There are gaps between tooth and tooth, this tachometer value for resulting in sensor to export is simultaneously inaccurate, influence the subsequent mark to speed changer
It is fixed.
For this purpose, it is proposed that a kind of method of automobile input shaft rotating speed acquisition, adds the speed ratio of drive shaft speed sensor
Value and drive shaft speed sensor one enclose number of teeth value, and add corresponding filter factor, reach to the accurate of input shaft rotating speed
Reliable acquisition, is convenient for subsequent calibration.
Summary of the invention
The purpose of the present invention is to provide a kind of methods of automobile input shaft rotating speed acquisition, pass through the drive shaft speed added
The speed ratio value C_ONE_TO_TWO_IO of sensor, drive shaft speed sensor one enclose number of teeth value C_TWO_TEETH_NO, filtering system
Number C_N_FITER1 and filtration coefficient C_N_FITER2, and calculated using filtering processing with corresponding, obtain revised input
Axis tachometer value nofones, avoids existing measurement method, does not consider that the numerical value of one circle of sensor gear rotation itself is examined
It surveys and the case where the speed ratio value of drive shaft speed sensor, reduces between tooth and tooth existing gap to the shadow of testing result
It rings, reaches the precise measurement to input shaft rotating speed value nofones, be convenient for subsequent calibration, to solve to mention in above-mentioned background technique
Have the problems in technology.
To achieve the above object, present invention employs following technical solutions: a kind of method of automobile input shaft rotating speed acquisition,
The following steps are included:
A kind of method of automobile input shaft rotating speed acquisition, it is characterised in that: the following steps are included:
S1: the determination of observed quantity: the System on Chip/SoC and input shaft rotating speed sensor carried using automobile obtains input shaft
Speed probe collection value uilvs_crk, and digital signal is converted analog signals by analog-digital converter, it obtains required
Input shaft rotating speed sensor collection value uilvs_crk signal；
S2: gauged determination: autonomous setting needs gauged numerical value to be added, including drive shaft speed sensor
Speed ratio value C_ONE_TO_TWO_IO, drive shaft speed sensor one enclose number of teeth value C_TWO_TEETH_NO, filtration coefficient C_N_
FITER1 and filtration coefficient C_N_FITER2；
S3: it starting Simulink: by the operating platform for having MATLAB, is inputted in MATLAB command window
Simulink recalls the window of Simulink Library Browser, is listed automatically by function classification in this window
Various modules title；
S4: the operation of observed quantity: the saturation output module Saturation in the various modules of invocation step S3, in S1
Input shaft rotating speed sensor collection value uilvs_crk is handled, and output is saturated when being more than setting value；
S5: the operation of initial input axis tachometer value nofones: the speed ratio of the drive shaft speed sensor in extraction step S2
Value C_ONE_TO_TWO_IO, drive shaft speed sensor one enclose number of teeth value C_TWO_TEETH_NO, and in extraction step S3
Uilvs_crk numerical value, and following formula are utilized,
It calculates and obtains initial input axis tachometer value nofones.
S6: filtering processing: last input shaft rotating speed value nofones is added multiplied by filtration coefficient C_N_FITER1 and is worked as
Preceding input shaft rotating speed value nofones obtains preceding segment data multiplied by filtration coefficient C_N_FITER2, by last input shaft rotating speed
The sum of value nofones and the preceding segment data of acquisition can be obtained revised input shaft rotating speed value nofones multiplied by 0.5；
S7: the acquisition of program: right under the translation and compiling environment in Simulink using the algorithm and logic in step S4-S6
Above-mentioned logical algorithm is compiled, and obtains binary executable；
S8: burning: the binary executable obtained in step S7 is burned onto the included System on Chip/SoC of automobile.
Preferably, in the step S1, input shaft rotating speed sensor is gear velocity sensor, and the outside diameter of gear is
99.3mm, the number of teeth 36, modulus is between 0.5-2.0.
Preferably, in the step S2, the speed ratio value C_ONE_TO_TWO_IO of drive shaft speed sensor is 1.895, defeated
Entering shaft speed sensor one to enclose number of teeth value C_TWO_TEETH_NO is 36, and filtration coefficient C_N_FITER1 is 0.2, filtration coefficient C_
N_FITER2 is 0.8.
Preferably, in the step S3, the operating platform with MATLAB, which contains, is connected with mouse and keyboard.
Preferably, it in the step S6, is realized in calculating process using the math block in the various modules of S3.
Technical effect and advantage of the invention: a kind of method of automobile input shaft rotating speed acquisition proposed by the present invention, and it is existing
There is technology to compare, has the advantage that
The present invention passes through the speed ratio value C_ONE_TO_TWO_IO for the drive shaft speed sensor added, and drive shaft speed passes
Sensor one encloses number of teeth value C_TWO_TEETH_NO, filtration coefficient C_N_FITER1 and filtration coefficient C_N_FITER2, and utilizes filter
Wave processing and corresponding calculating, obtain revised input shaft rotating speed value nofones, avoid existing measurement method, do not examine
The numerical value for considering one circle of sensor gear rotation itself carries out the case where detecting the speed ratio value with drive shaft speed sensor, reduces
Influence of the existing gap to testing result between tooth and tooth, reaches the precise measurement to input shaft rotating speed value nofones, is convenient for
Subsequent calibration.
Detailed description of the invention
Fig. 1 is the schematic diagram for the method that a kind of automobile input shaft rotating speed of the invention acquires；
Fig. 2 is the filtering processing schematic diagram for the method that a kind of automobile input shaft rotating speed of the invention acquires.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Herein
Described specific embodiment is only used to explain the present invention, is not intended to limit the present invention.Based on the embodiments of the present invention,
Every other embodiment obtained by those of ordinary skill in the art without making creative efforts, belongs to this hair
The range of bright protection.
The present invention provides a kind of methods of automobile input shaft rotating speed acquisition referring to FIG. 1-2, comprising the following steps:
S1: the determination of observed quantity: the System on Chip/SoC and input shaft rotating speed sensor carried using automobile obtains input shaft
Speed probe collection value uilvs_crk, and digital signal is converted analog signals by analog-digital converter, it obtains required
Input shaft rotating speed sensor collection value uilvs_crk signal；
S2: gauged determination: autonomous setting needs gauged numerical value to be added, including drive shaft speed sensor
Speed ratio value C_ONE_TO_TWO_IO, drive shaft speed sensor one enclose number of teeth value C_TWO_TEETH_NO, filtration coefficient C_N_
FITER1 and filtration coefficient C_N_FITER2；
S3: it starting Simulink: by the operating platform for having MATLAB, is inputted in MATLAB command window
Simulink recalls the window of Simulink Library Browser, is listed automatically by function classification in this window
Various modules title；
S4: the operation of observed quantity: the saturation output module Saturation in the various modules of invocation step S3, in S1
Input shaft rotating speed sensor collection value uilvs_crk is handled, and output is saturated when being more than setting value；
S5: the operation of initial input axis tachometer value nofones: the speed ratio of the drive shaft speed sensor in extraction step S2
Value C_ONE_TO_TWO_IO, drive shaft speed sensor one enclose number of teeth value C_TWO_TEETH_NO, and in extraction step S3
Uilvs_crk numerical value, and following formula are utilized,
It calculates and obtains initial input axis tachometer value nofones.
S6: filtering processing: last input shaft rotating speed value nofones is added multiplied by filtration coefficient C_N_FITER1 and is worked as
Preceding input shaft rotating speed value nofones obtains preceding segment data multiplied by filtration coefficient C_N_FITER2, by last input shaft rotating speed
The sum of value nofones and the preceding segment data of acquisition can be obtained revised input shaft rotating speed value nofones multiplied by 0.5,
Filtering is by the operation that specific band frequency filters out in signal, is the important measures for inhibiting and preventing interference, and filtering is divided into
Classical filter and modern filtering, the concept of classical filter are the concept of engineering proposed according to Fourier analysis and transformation.Root
According to higher mathematics theory, any one signal met certain condition, can be regarded as by unlimited a sine-wave superimposed and
At.In other words, as Engineering Signal is the different frequency for forming signal made of the sine wave linear superposition of different frequency
Sine wave is called the frequency content of signal or is called harmonic components, and modern filtering filters analog signal with Analogical Electronics
Wave, basic principle are exactly the selection realized using the frequency characteristic of circuit to signal intermediate frequency rate ingredient.When according to frequency filtering,
It is signal to be regarded as the analog signal as made of different frequency sine-wave superimposed, is realized by selecting different frequency contents
Signal filtering, this process belongs to modern filtering, for reducing the influence of tooth and space width to measurement result；
S7: the acquisition of program: right under the translation and compiling environment in Simulink using the algorithm and logic in step S4-S6
Above-mentioned logical algorithm is compiled, and obtains binary executable, the specific acquisition process of binary executable, base
In the M script that the algorithm and logical model of Simulink are write in advance by control, calling, to the control based on Simulink
Algorithm software program processed executes embedded code automatically and generates work, obtains application layer code；Pass through the M script execution code
Integration work combines the application layer code, application program link software code, bottom software code, is formed whole
Code file after conjunction；Autoexec is dispatched by the M script, batch processing is carried out to the code file after the integration；
Chip compiler is called by the M script, the code file after the batch processing is compiled and is connected processing and generate two
The writable file of system；
S8: burning: the binary executable obtained in step S7 is burned onto the included System on Chip/SoC of automobile.
Preferably, input shaft rotating speed sensor is gear velocity sensor in the step S1, the outside diameter of gear is
99.3mm, the number of teeth 36, modulus, convenient for the measurement to input shaft rotating speed, are easy to use between 0.5-2.0.
Preferably, the speed ratio value C_ONE_TO_TWO_IO of drive shaft speed sensor is 1.895, defeated in the step S2
Entering shaft speed sensor one to enclose number of teeth value C_TWO_TEETH_NO is 36, and filtration coefficient C_N_FITER1 is 0.2, filtration coefficient C_
N_FITER2 is 0.8, can realize gauged input and setting, and preferably convenient for subsequent final according to different weight calculations
Input shaft rotating speed value nofones, obtain accurate input shaft rotating speed value nofones.
Preferably, the operating platform with MATLAB, which contains, is connected with mouse and keyboard, mouse and keyboard in the step S3
As the input equipment of operating platform, it is easy to use operation and the input of corresponding data.
Preferably, realized in calculating process using the math block in the various modules of S3 in the step S6,
Simulink has many advantages, such as to adapt to wide, structure and clear process and emulation is fine, closing to reality, high-efficient, flexible, and base
It has been widely used in the complex simulation and design of control theory and Digital Signal Processing in the above advantage Simulink,
SIMULINK classifies module library by function, including following 8 class word bank: Continuous successive module, Discrete are discrete
Module, Function&Tables function and console module, Math math block, Nonlinear nonlinear block, Signals&
Systems signal and system module, Sinks receiver module, Sources input source module, and math block includes following sons again
Module, Sum: plus and minus calculation, Product: multiplication, Dot Product: point multiplication operation, Gain: proportional gain operation, Math
Function: including exponential function, logarithmic function, squared, common mathematicals function, the Trigonometric such as open radical sign
Function: trigonometric function, including sine, cosine, tangent etc., MinMax: most value operation, Abs: taking absolute value, Sign: symbol
Function, Logical Operator: logical operation, Relational Operator: relational calculus, Complex to
Magnitude-Angle: amplitude is switched to by plural number input and phase angle exports, Magnitude-Angle to Complex: by width
Value and phase angle input synthesis plural number output, Complex to Real-Imag: switching to real and imaginary parts output by plural number input,
Real-Imag to Complex: plural number output is synthesized by real and imaginary parts input, the filtering processing of step 6 is mainly using plus-minus
Operation, multiplication and proportional gain operation composition, can effectively realize filter process
In summary: the present invention passes through the speed ratio value C_ONE_TO_TWO_IO for the drive shaft speed sensor added, input
Shaft speed sensor one encloses number of teeth value C_TWO_TEETH_NO, filtration coefficient C_N_FITER1 and filtration coefficient C_N_FITER2,
And using filtering processing and corresponding calculating, revised input shaft rotating speed value nofones is obtained, existing measurement side is avoided
Formula does not consider that the numerical value of one circle of sensor gear rotation itself carries out the feelings of the speed ratio value of detection and drive shaft speed sensor
Condition reduces influence of the existing gap to testing result between tooth and tooth, reaches to the accurate of input shaft rotating speed value nofones
Subsequent calibration is convenient in measurement.
Finally, it should be noted that the foregoing is only a preferred embodiment of the present invention, it is not intended to restrict the invention,
Although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art, still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features,
All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in of the invention
Within protection scope.
Claims (5)
1. a kind of method of automobile input shaft rotating speed acquisition, it is characterised in that: the following steps are included:
S1: the determination of observed quantity: the System on Chip/SoC and input shaft rotating speed sensor carried using automobile obtains input shaft rotating speed
Sensor collection value uilvs_crk, and digital signal is converted analog signals by analog-digital converter, obtain required input
Shaft speed transducer collection value uilvs_crk signal；
S2: gauged determination: autonomous setting needs gauged numerical value to be added, the speed ratio including drive shaft speed sensor
Value C_ONE_TO_TWO_IO, drive shaft speed sensor one enclose number of teeth value C_TWO_TEETH_NO, filtration coefficient C_N_FITER1
With filtration coefficient C_N_FITER2；
S3: starting Simulink: by the operating platform for having MATLAB, inputting simulink in MATLAB command window,
The window of Simulink Library Browser is recalled, lists the various modules by function classification automatically in this window
Title；
S4: the operation of observed quantity: the saturation output module Saturation in the various modules of invocation step S3, to the input in S1
Shaft speed transducer collection value uilvs_crk is handled, and output is saturated when being more than setting value；
S5: the operation of initial input axis tachometer value nofones: the speed ratio value C_ of the drive shaft speed sensor in extraction step S2
ONE_TO_TWO_IO, drive shaft speed sensor one enclose number of teeth value C_TWO_TEETH_NO, and uilvs_ in extraction step S3
Crk numerical value, and following formula are utilized,
It calculates and obtains initial input axis tachometer value nofones.
S6: filtering processing: by last input shaft rotating speed value nofones multiplied by filtration coefficient C_N_FITER1 plus current defeated
Enter axis tachometer value nofones and obtain preceding segment data multiplied by filtration coefficient C_N_FITER2, by last input shaft rotating speed value
The sum of nofones and the preceding segment data of acquisition can be obtained revised input shaft rotating speed value nofones multiplied by 0.5；
S7: the acquisition of program: using the algorithm and logic in step S4-S6, under the translation and compiling environment in Simulink, to above-mentioned
Logical algorithm be compiled, obtain binary executable；
S8: burning: the binary executable obtained in step S7 is burned onto the included System on Chip/SoC of automobile.
2. a kind of method of automobile input shaft rotating speed acquisition according to claim 1, it is characterised in that: the step S1
In, input shaft rotating speed sensor be gear velocity sensor, outside diameter of gear 99.3mm, the number of teeth 36, modulus 0.5-2.0 it
Between.
3. a kind of method of automobile input shaft rotating speed acquisition according to claim 1, it is characterised in that: the step S2
In, the speed ratio value C_ONE_TO_TWO_IO of drive shaft speed sensor is 1.895, and drive shaft speed sensor one encloses number of teeth value
C_TWO_TEETH_NO is 36, and filtration coefficient C_N_FITER1 is 0.2, and filtration coefficient C_N_FITER2 is 0.8.
4. a kind of method of automobile input shaft rotating speed acquisition according to claim 1, it is characterised in that: the step S3
In, the operating platform with MATLAB, which contains, is connected with mouse and keyboard.
5. a kind of method of automobile input shaft rotating speed acquisition according to claim 1, it is characterised in that: the step S6
In, it is realized in calculating process using the math block in the various modules of S3.
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| CN201910499147.2A CN110389234A (en) | 2019-06-11 | 2019-06-11 | A kind of method of automobile input shaft rotating speed acquisition |
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Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1036268A (en) * | 1988-03-31 | 1989-10-11 | 海德堡印刷机械股份公司 | Measure the method and the device of rotating speed |
| US20030033849A1 (en) * | 2001-08-17 | 2003-02-20 | Labuy Jeffrey J. | Electronic speedometer calibration device |
| CN201083755Y (en) * | 2007-08-20 | 2008-07-09 | 山西大同齿轮集团有限责任公司 | Gear box rotating speed measuring device |
| CN101449170A (en) * | 2006-05-19 | 2009-06-03 | Zf腓德烈斯哈芬股份公司 | Method for determining the rotational speed of the main shaft of a transmission, and transmission comprising a device for detecting rotational speed |
| CN104198754A (en) * | 2014-09-11 | 2014-12-10 | 中国人民解放军海军航空工程学院青岛校区 | Aero-engine rotation speed testing system |
| CN104407174A (en) * | 2014-12-02 | 2015-03-11 | 安徽江淮汽车股份有限公司 | Test bed for testing rotating speed sensor |
| CN104730277A (en) * | 2015-04-01 | 2015-06-24 | 武汉理工通宇新源动力有限公司 | Gearbox rotating speed measuring method |
| JP2016056907A (en) * | 2014-09-11 | 2016-04-21 | 富士重工業株式会社 | Gear change control device of automatic transmission |
| JP2017015616A (en) * | 2015-07-03 | 2017-01-19 | 本田技研工業株式会社 | Failure determination device for vehicle speed detection device |
| CN107631019A (en) * | 2016-07-19 | 2018-01-26 | 厦门雅迅网络股份有限公司 | A kind of method and system of gearbox-gear demarcation |
| CN107985319A (en) * | 2017-11-29 | 2018-05-04 | 潍柴动力股份有限公司 | A kind of automobile power assembly rotation speed regulating method and device |
-
2019
- 2019-06-11 CN CN201910499147.2A patent/CN110389234A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1036268A (en) * | 1988-03-31 | 1989-10-11 | 海德堡印刷机械股份公司 | Measure the method and the device of rotating speed |
| US20030033849A1 (en) * | 2001-08-17 | 2003-02-20 | Labuy Jeffrey J. | Electronic speedometer calibration device |
| CN101449170A (en) * | 2006-05-19 | 2009-06-03 | Zf腓德烈斯哈芬股份公司 | Method for determining the rotational speed of the main shaft of a transmission, and transmission comprising a device for detecting rotational speed |
| CN201083755Y (en) * | 2007-08-20 | 2008-07-09 | 山西大同齿轮集团有限责任公司 | Gear box rotating speed measuring device |
| CN104198754A (en) * | 2014-09-11 | 2014-12-10 | 中国人民解放军海军航空工程学院青岛校区 | Aero-engine rotation speed testing system |
| JP2016056907A (en) * | 2014-09-11 | 2016-04-21 | 富士重工業株式会社 | Gear change control device of automatic transmission |
| CN104407174A (en) * | 2014-12-02 | 2015-03-11 | 安徽江淮汽车股份有限公司 | Test bed for testing rotating speed sensor |
| CN104730277A (en) * | 2015-04-01 | 2015-06-24 | 武汉理工通宇新源动力有限公司 | Gearbox rotating speed measuring method |
| JP2017015616A (en) * | 2015-07-03 | 2017-01-19 | 本田技研工業株式会社 | Failure determination device for vehicle speed detection device |
| CN107631019A (en) * | 2016-07-19 | 2018-01-26 | 厦门雅迅网络股份有限公司 | A kind of method and system of gearbox-gear demarcation |
| CN107985319A (en) * | 2017-11-29 | 2018-05-04 | 潍柴动力股份有限公司 | A kind of automobile power assembly rotation speed regulating method and device |
Non-Patent Citations (2)
| Title |
|---|
| 胡楠: "《基于虚拟仪器技术的汽车自动变速器故障诊断平台开发》", 《中国优秀硕士学位论文全文数据库 工程科技II辑》 * |
| 高惠东等: "《纯电动汽车两档变速器优化设计》", 《北华大学学报(自然科学版)》 * |
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