CN103293009A - Device and method for testing electronic power steering system of automobile - Google Patents
Device and method for testing electronic power steering system of automobile Download PDFInfo
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- CN103293009A CN103293009A CN2013102192618A CN201310219261A CN103293009A CN 103293009 A CN103293009 A CN 103293009A CN 2013102192618 A CN2013102192618 A CN 2013102192618A CN 201310219261 A CN201310219261 A CN 201310219261A CN 103293009 A CN103293009 A CN 103293009A
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Abstract
The invention aims to provide a device and a method for testing response of EPS (electronic power steering) under different steering resistance force actions, and discloses a device and a method for testing an electronic power steering system of an automobile. The device comprises a base. The base is provided with a horizontal upper surface, and a limiting table I, an elastic component I, a first guide rod, a rack and pinion steering gear I, a pull pressure sensor I, a rack and pinion steering gear II, a pull pressure sensor II, a second guide rod, an elastic component II and a limiting table II are sequentially mounted on the upper surface of the base from the left end to the right end of the upper surface of the base. The device and the method have the advantage that steering characteristics of the EPS under the effects of different rotation angles and automobile speeds can be measured by the device.
Description
Technical field
The present invention relates to mechanical hook-up performance test field, specifically is the EPS system testing.
Background technology
(Electric Power Steering EPS) relies on motor that power-assisted is provided to electric power steering, is a kind of novel servo steering device of electromechanical integration.Because the advantage of aspects such as the power-assisted effect of the best that EPS has is simple in structure, change with the speed of a motor vehicle, energy savings, protection environment is used extensive day by day at present.
The assist characteristic curve of EPS refers to that the booster torquemoment (comprising size and Orientation) of motor and bearing circle input torque, Vehicle Speed, front-wheel air pressure, front axle axle heavily wait the relation between the parameter, considers that generally speaking bearing circle input torque, these two major parameters of Vehicle Speed can satisfy the control requirement.The assist characteristic curve of EPS has determined controller (ECU) goes to control the size of power-assisted electric current according to which type of mode, to satisfy under the different driving cycles requirement to booster torquemoment.Usually, assist characteristic generally has linear pattern, broken line shape and 3 kinds of typical curve forms of shaped form.Wherein, shaped form is power-assisted best results, optimal assist characteristic curve, but it realizes that difficulty is higher.Performance test for shaped form EPS is also comparatively difficult.
Summary of the invention
One of them purpose of the present invention provides the device of the response of a kind of EPS of test under different steering drag effects.
For realizing that the technical scheme that the object of the invention adopts is such, a kind of automotive electronics servo steering system proving installation, comprise a base with upper horizontal surface, the upper surface of described base is installed from the left end to the right-hand member successively: limiting stand I, elastomeric element I, first guide pole, rack and pinion steering gear I, pull pressure sensor I, rack and pinion steering gear II, pull pressure sensor II, second guide pole, elastomeric element II and limiting stand II.
What deserves to be explained is, described base be the lower end by some channel-section steels as support, lay a horizontal panel in channel-section steel upper end.In addition, because the present invention need define the spatial relation of each parts, be left end with any end of base, relative with it is right-hand member, above-mentioned parts are installed successively side by side, and the annexation between each parts is as described later.
Described rack and pinion steering gear I comprises and is installed in the cylindrical shell I and pitch wheel I and tooth bar I, described cylindrical shell I open at both ends.In order to cooperate the upper surface that is axially perpendicular to base of described gear I with the output terminal of EPS.But arrange in any case, need make the direction of motion of described tooth bar I be parallel to the upper surface of base.Two opening ends of cylindrical shell I are stretched out at the two ends, the left and right sides that are the tooth bar I, and the tooth bar I can be in cylindrical shell I slides within, and two opening ends of cylindrical shell I are the two ends of tooth bar I direction of motion.Described cylindrical shell I is installed on the bearing I, and the described cylindrical shell I of upper surface that the lower end of described bearing I is fixed on base is installed on the bearing I, and the lower end of described bearing I is fixed on the upper surface of base.The left end of described tooth bar I is connected with the right-hand member of first guide pole.
The left end of described first guide pole contacts with the right-hand member of elastomeric element I, and the left end of described elastomeric element I is connected with the right side of limiting stand I on being fixed on base.
Described rack and pinion steering gear II comprises and is installed in the cylindrical shell II and pitch wheel II and tooth bar II, described cylindrical shell II open at both ends, and the direction of motion of described tooth bar II is parallel to the upper surface of base.Described cylindrical shell II is installed on the bearing II, and the lower end of described bearing II is fixed on the upper surface of base.The matching relationship of described tooth bar II and cylindrical shell II is identical with the matching relationship of tooth bar I and cylindrical shell I.Further, the structure of described rack and pinion steering gear I and rack and pinion steering gear II is all identical with size, namely has identical ratio of gear.Described cylindrical shell is installed on the bearing I, and the lower end of described bearing I is fixed on the upper surface of base.
Described limiting stand II is fixed on the base, and the left side of described limiting stand II is connected with the right-hand member of elastomeric element II, and the left end of described elastomeric element II contacts with the right-hand member of second guide pole.
The pull pressure sensor I is installed between the left end of the right-hand member of described tooth bar I and tooth bar II, the pull pressure sensor II is installed between the left end of the right-hand member of described tooth bar II and second guide pole.
Further, the pull pressure sensor I all adopts identical PPM225-LS1-1 type pull pressure sensor with the pull pressure sensor II, and range is 0～500Kg.
Described base upper surface also is equipped with the bracing or strutting arrangement II of the tested electronic power assist steering of carrying system and the bracing or strutting arrangement I of carrying standard electronic servo steering system.
The upper end closure dish I of the input shaft I in the described standard electronic servo steering system, the lower end of transmission shaft I cooperate with described gear I.The upper end closure dish II of the input shaft II in the described tested electronic power assist steering system, the lower end of transmission shaft II cooperate with described gear II.
Generally, in the electronic power assist steering system, the moment of torsion that steering wheel rotation produces is delivered to torque arm by input shaft, moment of torsion is delivered to torque arm by input shaft, because torque arm is elastic shaft, output shaft produces angular displacement relatively, makes the sense of rotation between input shaft and the output shaft produce angular displacement, and it is mobile that slide block is produced at axial direction.These deviations are moving axially slide block, and these axial movements are converted to the anglec of rotation of potentiometer, rotary angle signal are changed into voltage signal again and are delivered to the P/S controller by potentiometer.Controller can receive the signal of operating physical force size and Orientation on the bearing circle.Control module is according to the detected torque signal of torque sensor and vehicle speed signal and feedback electric moter voltage and current signal, judge the steering state of automobile, send steering order to driver element, the angle and direction that motor is rotated by bearing circle produces the auxiliary force of corresponding size, pass to output shaft by drive disk assemblies such as worm and gears, output shaft passes to transmission shaft again, assists the driver to carry out handling maneuver.
In addition, transmission shaft cooperates with adopting keyway cooperating of gear, and namely the transmission the tip of the axis has spline, and the axis hole of gear has the groove with described spline fitted.When bearing circle I driven gear I was rotated counterclockwise, the tooth bar I moved to right-hand member, and when bearing circle I driven gear I turned clockwise, the tooth bar I moved to left end.When the drive connection of bearing circle II, gear II and tooth bar II identical therewith.
Among the present invention, described standard electronic servo steering system is as the part of device, and performance conditions such as its assist characteristic detect through strict, meet standard.Its design parameter of described tested electronic power assist steering system is identical with described standard electronic servo steering system, but its assist characteristic whether product qualified in other words is what to need by this device its judgement.Say that further the disclosed device of the present invention is owing to have an above-mentioned annexation, the standard electronic servo steering system can provide rightabout resistance to tested electronic power assist steering system.Therefore, can be for detection of tested electronic power assist steering system.Further, (as the relation curve of the acting force under the given speed of a motor vehicle and corner, assist characteristic curve etc.) are identical with designing requirement to tested electronic power assist steering system because standard electronic servo steering system output parameter, just can provide to control to turn to make its direction opposite.Therefore, according to the principle of acting force and reacting force, this device can better be simulated the suffered resistance of tested electronic power assist steering system.
Further, described elastomeric element I and elastomeric element II are volute springs, and its two ends are connected with adjacent component respectively.In the use, volute spring and standard electronic servo steering system provide loading force jointly.
Further, described bracing or strutting arrangement II and/or bracing or strutting arrangement I comprise the column perpendicular to base upper surface, and the upper end of described column connects the bearing diagonal plate.
As preferably, the outer wall of described cylindrical shell I and/or cylindrical shell II is connected with base upper surface by width of cloth supporting seat.
Another object of the present invention is to adopt above-mentioned this device to simulate the resistance that tested electronic power assist steering system in use is subjected to, to evaluate its performance and quality etc.
Namely adopt said apparatus to test, may further comprise the steps: installation code electronic power assist steering system makes the lower end of input shaft I of described standard electronic servo steering system cooperate with described gear I.Tested electronic power assist steering system is installed, makes the lower end of input shaft II of described tested electronic power assist steering system cooperate with described gear II.When tested electronic power assist steering system works, described standard electronic servo steering system applies resistance to tested electronic power assist steering system.
Purpose in addition of the present invention is to adopt above-mentioned this measurement device EPS its assist characteristic under different corners and the speed of a motor vehicle.
May further comprise the steps:
1) installation code electronic power assist steering system makes the lower end of input shaft I of described standard electronic servo steering system cooperate with described gear I;
2) tested electronic power assist steering system is installed, makes the lower end of input shaft II of described tested electronic power assist steering system cooperate with described gear II;
3) according to design parameter, determine bearing circle II corner number of degrees Φ, vehicle velocity V and act on relation between the resistance F on the tooth bar I, be i.e. F
m=h(Φ, V);
4) set vehicle velocity V=V
1, the bearing circle II of tested electronic power assist steering system upper end is applied moment of torsion, make its rotation, namely make described tooth bar II be pushed to an end of pull pressure sensor II; When the described bearing circle II anglec of rotation is Φ
1The time, described pull pressure sensor II record resistance F
1, described resistance F
1Provided by the elastomeric element I; With Φ
1And V
1Substitution F
m=h(Φ V), obtains target loading force F
M1=h(Φ
1, V
1), calculate F
M1With F
1Between difference F
2=h(Φ
1, V
1)-F
1The bearing circle II is from Φ
1Rotate to Φ
2In the process, provide power F by described standard electronic servo steering system to tooth bar II direction of motion
2, measure the moment of torsion M that is applied to this moment on the bearing circle II by sensor
1
5) the bearing circle II is just returned, set vehicle velocity V=V
1, the bearing circle II of tested electronic power assist steering system upper end is applied the moment of torsion opposite with the step 4) direction, make its rotation, namely make described tooth bar II be pushed to an end of pull pressure sensor I; When the described bearing circle II anglec of rotation is Φ
3The time, described pull pressure sensor II record resistance F
3, described resistance F
3Provided by the elastomeric element II; With Φ
3And V
1Substitution F
m=h(Φ V), obtains target loading force F
M3=h(Φ
3, V
1), calculate F
M3With F
3Between difference F
4=h(Φ
3, V
1)-F
3The bearing circle II is from Φ
3Rotate to Φ
4In the process, provide power F by described standard electronic servo steering system to tooth bar II direction of motion
4, measure the moment of torsion M that is applied to this moment on the bearing circle II by sensor
2
What deserves to be explained is in the above-mentioned steps, the 4th) step is the power-assisted ability of measuring EPS when turning to counterclockwise, and bearing circle counterclockwise represents that with clockwise direction its sense of rotation is relative, and the direction of motion of tooth bar is also opposite thereupon.The 5th) step is the power-assisted ability of measuring EPS when turning to clockwise.Counterclockwise can exchange with the order of clockwise direction test.Just after the test of carrying out a direction, bearing circle just returned and get final product.
Among the present invention, designed a kind of proving installation of new electric boosting steering system (being the EPS system), i.e. a kind of experiment table.Be different from traditional loading method, this project adopts two EPS systems to test, and one is measured piece, and another standard component is as loaded member (can provide non-linear resistance).Overcome spring load mode monotonicity (linear resistance can only be provided), can detect assist characteristic and be the performance of linear pattern, broken line shape and curved EPS system.In addition, in existing test, the precision of elastic devices such as spring is not high, and particularly its elasticity coefficient can change in long-term use.This devices and methods therefor is made up the difference by standard EPS, can remedy the deficiency of elastic device, guaranteed that actual loaded value (resistance that measured piece is provided) equals the target loaded value, has theory directive significance and reference value to the research and development of EPS system experimental from now on.
Description of drawings
Device of the present invention can further specify by the indefiniteness embodiment that accompanying drawing provides.
Fig. 1 is schematic perspective view of the present invention;
Fig. 2 is the turn inside diameter synoptic diagram;
Fig. 3 is tyre axis system and stub coordinate system transition diagram.
Among the figure: 1-limiting stand I; 2-elastomeric element I; 3-rack and pinion steering gear I; 4-bearing I; 5-pull pressure sensor I; 6-bearing II; The 7-base; 8-limiting stand II; 9-elastomeric element II; 10-pull pressure sensor II; 11-rack and pinion steering gear II; 12-bracing or strutting arrangement II; 13-bracing or strutting arrangement I; 14-standard electronic servo steering system; The tested electronic power assist steering of 15-system; 16-transmission shaft I; 17-transmission shaft II; 18-first guide pole; 19-tooth bar I; 20-tooth bar II; 22-second guide pole.
Embodiment
The invention will be further described below in conjunction with drawings and Examples, only limits to following embodiment but should not be construed the above-mentioned subject area of the present invention.Under the situation that does not break away from the above-mentioned technological thought of the present invention, according to ordinary skill knowledge and customary means, make various replacements and change, all should be included in the scope of the present invention.
Embodiment 1:
A kind of automotive electronics servo steering system proving installation, a kind of automotive electronics servo steering system proving installation, comprise a base 7 with upper horizontal surface, the upper surface of described base 7 is installed from the left end to the right-hand member successively: limiting stand I 1, elastomeric element I 2, first guide pole 18, rack and pinion steering gear I 3, pull pressure sensor I 5, rack and pinion steering gear II 11, pull pressure sensor II 10, second guide pole 22, elastomeric element II 9 and limiting stand II 8.Described rack and pinion steering gear I 3 comprises and is installed in the cylindrical shell I and pitch wheel I and tooth bar I 19, described cylindrical shell I open at both ends, and the direction of motion of described tooth bar I 19 is parallel to the upper surface of base 7.Described cylindrical shell I is installed on the bearing I 4, and the lower end of described bearing I 4 is fixed on the upper surface of base 7.The left end of described tooth bar I 19 is connected with the right-hand member of first guide pole 18.The right-hand member contact of the left end of described first guide pole 18 and elastomeric element 2 or be connected, the left end of described elastomeric element 2 is connected with the right side of limiting stand I 1 on being fixed on base 7.Described rack and pinion steering gear II 11 comprises and is installed in the cylindrical shell II and pitch wheel II and tooth bar II 20, described cylindrical shell II open at both ends, and the direction of motion of described tooth bar II 20 is parallel to the upper surface of base 7.Described cylindrical shell II is installed on the bearing II 6, and the lower end of described bearing II 6 is fixed on the upper surface of base 7.Described limiting stand II is fixed on the base 7, and the left side of described limiting stand II is connected with the right-hand member of elastomeric element II 9, and the left end of described elastomeric element II 9 contacts with the right-hand member of second guide pole 22 or is connected.Pull pressure sensor I 5 is installed between the left end of the right-hand member of described tooth bar I 19 and tooth bar II 20, pull pressure sensor II 10 is installed between the left end of the right-hand member of described tooth bar II 20 and second guide pole 22.Described base 7 upper surfaces also are equipped with the bracing or strutting arrangement II 12 of the tested electronic power assist steering of carrying system 15 and the bracing or strutting arrangement I 13 of carrying standard electronic servo steering system 14.The upper end closure dish I of the input shaft I in the described standard electronic servo steering system 14, the lower end of transmission shaft I 16 cooperate with described gear I.The upper end closure dish II of the input shaft II in the described tested electronic power assist steering system 15, the lower end of transmission shaft II 17 cooperate with described gear II.
In the present embodiment, described elastomeric element I 2 and elastomeric element II 9 are volute springs.
Referring to Fig. 1, described bracing or strutting arrangement II 12 and bracing or strutting arrangement I 13 comprise the column perpendicular to base 7 upper surfaces, and the upper end of described column connects the bearing diagonal plate.
Because the consistent size of standard electronic servo steering system 14 and tested electronic power assist steering system 15 is so the column of bracing or strutting arrangement II 12 and bracing or strutting arrangement I 13 is arranged side by side, and contour.The bearing diagonal plate guarantees that standard electronic servo steering system 14 and tested electronic power assist steering system 15 firmly place and is fixing, and the lower end of transmission shaft separately can cooperate installation with gear.
Further, the outer wall of described cylindrical shell I and/or cylindrical shell II is connected with base 7 upper surfaces by width of cloth supporting seat.
In the present embodiment, when tested electronic power assist steering system 15 rotated, volute spring and standard electronic servo steering system 14 all can provide resistance to it, and when standard electronic servo steering system 14 did not start, volute spring provided linear resistance.Limiting stand I 1 and limiting stand II 8 can also be designed to be able to the form of separating with base 7.Namely when limiting stand I 1 is separated with base 7 with limiting stand II 8, provide resistance by standard electronic servo steering system 14 separately.
When adopting the disclosed device of present embodiment to test, need installation code electronic power assist steering system, make the lower end of input shaft I of described standard electronic servo steering system cooperate with described gear I.Simultaneously also need to install tested electronic power assist steering system, make the lower end of input shaft II of described tested electronic power assist steering system cooperate with described gear II.When tested electronic power assist steering system works, described standard electronic servo steering system applies resistance to tested electronic power assist steering system.
Embodiment 2:
The assist characteristic of EPS is divided into following 3 classes: linear pattern power-assisted, broken line type power-assisted and shaped form power-assisted.When carrying out the EPS performance test, need provide corresponding shaped form resistance.
Present embodiment utilizes kingpin inclination, and parameters such as back rake angle are derived to the aligning torque of automobile, and to obtain the computing formula of loading force (resistance) as follows for the binding kinetics model again.
Referring to Fig. 2:
Foreign steamer is to vehicle center of rotation corner:
The interior wheel vehicle center of rotation corner:
Foreign steamer is to vehicle center of rotation radius:
The interior wheel vehicle center of rotation radius:
Referring to Fig. 3:
Right wheel (interior wheel) is with respect to the corner of stub:
Revolver (foreign steamer) is the corner of stub relatively:
The aligning torque that right wheel (interior wheel) gravity produces stub:
The aligning torque that revolver (interior wheel) gravity produces stub:
Interior wheel side force:
The foreign steamer side force:
Interior wheel longitudinal force:
The foreign steamer longitudinal force:
The aligning torque that right wheel (interior wheel) side force produces:
The aligning torque that revolver (interior wheel) side force produces:
The aligning torque that right wheel (interior wheel) longitudinal force produces:
The aligning torque that revolver (interior wheel) longitudinal force produces:
The angular acceleration of interior wheel corner:
The angular acceleration of foreign steamer corner:
Right wheel acts on the lateral resistance of steering box:
Revolver acts on the lateral resistance of steering box:
The total lateral resistance of steering box:
Above-mentioned computing formula is programmed by Matlab, when obtaining EPS and moving in actual condition, acts on the amount of force on the tooth bar.Be 60 ° of speed of a motor vehicle when being 70km/h as corner, the power that acts on the tooth bar is 4000N.The performance of electronic power assist steering system meets the characteristic that above-mentioned formula calculates.
The method that adopts embodiment 1 described device to test may further comprise the steps:
1) installation code electronic power assist steering system makes the lower end of input shaft I of described standard electronic servo steering system cooperate with described gear I.
2) tested electronic power assist steering system is installed, makes the lower end of input shaft II of described tested electronic power assist steering system cooperate with described gear II.
3) according to design parameter, determine bearing circle II corner number of degrees Φ, vehicle velocity V and act on relation between the resistance F on the tooth bar I, be i.e. F
m=h(Φ, V).In the present embodiment, this funtcional relationship can also can obtain according to the described derivation of equation of preamble according to the actual tests match.In the described derivation of equation: F
mBe F-
z, Φ is θ
1, V=W
l * R-o.
4) set vehicle velocity V=V
1, the bearing circle II of tested electronic power assist steering system upper end is applied moment of torsion, make its rotation, namely make described tooth bar II be pushed to an end of pull pressure sensor II.When the described bearing circle II anglec of rotation is Φ
1The time, (this moment is by angular velocity and the parameter such as angular acceleration of bearing circle sensor record this moment) described pull pressure sensor II record resistance F
1, described resistance F
1Provided by the elastomeric element I.With Φ
1And V
1Substitution F
m=h(Φ V), obtains target loading force F
M1=h(Φ
1, V
1), calculate F
M1With F
1Between difference F
2=h(Φ
1, V
1)-F
1(the bearing circle II anglec of rotation is Φ
1After do not stop, continuing rotation) the bearing circle II is from Φ
1Rotate to Φ
2In the process, provide power F by described standard electronic servo steering system to tooth bar II direction of motion
2, measure this moment by sensor, namely the bearing circle II is from Φ
1Rotate to Φ
2In the process, be applied to the moment of torsion M on the bearing circle II
1According to described M
1Judge tested electronic power assist steering system performance.In the present embodiment, Φ
2With Φ
1Difference, i.e. Φ
2With Φ
1The absolute value of difference, be not more than 1 °, be preferably 0.5 °, more preferably 0.2 °.Further, the bearing circle II anglec of rotation is Φ
1After do not stop, continuing rotation, when obtaining the rotation of bearing circle II to a plurality of angle by the described method of this step correspondence be applied to moment of torsion on the bearing circle II, to judge the performance of EPS.
5) the bearing circle II is just returned, set vehicle velocity V=V
1, the bearing circle II of tested electronic power assist steering system upper end is applied the moment of torsion opposite with the step 4) direction, make its rotation, namely make described tooth bar II be pushed to an end of pull pressure sensor I.When the described bearing circle II anglec of rotation is Φ
3The time, (by angular velocity and the parameter such as angular acceleration of bearing circle sensor record this moment) described pull pressure sensor II record resistance F
3, described resistance F
3Provided by the elastomeric element II.With Φ
3And V
1Substitution F
m=h(Φ V), obtains target loading force F
M3=h(Φ
3, V
1), calculate F
M3With F
3Between difference F
4=h(Φ
3, V
1)-F
3(the bearing circle II anglec of rotation is Φ
1Back continuation rotation) the bearing circle II is from Φ
3Rotate to Φ
4In the process, provide power F by described standard electronic servo steering system to tooth bar II direction of motion
4, measure this moment by sensor, namely the bearing circle II is from Φ
3Rotate to Φ
4In the process, be applied to the moment of torsion M on the bearing circle II
2In the present embodiment, Φ
4With Φ
3Difference, i.e. Φ
4With Φ
3The absolute value of difference, less than 1 °, be preferably 0.5 °, more preferably 0.2 °.Further, the bearing circle II anglec of rotation is Φ
4After do not stop, continuing rotation, when obtaining the rotation of bearing circle II to a plurality of angle by the described method of this step correspondence be applied to moment of torsion on the bearing circle II, to judge the performance of EPS.
Claims (6)
1. automotive electronics servo steering system proving installation, it is characterized in that: comprise a base (7) with upper horizontal surface, the upper surface of described base (7) is installed from the left end to the right-hand member successively: limiting stand I (1), elastomeric element I (2), first guide pole (18), rack and pinion steering gear I (3), pull pressure sensor I (5), rack and pinion steering gear II (11), pull pressure sensor II (10), second guide pole (22), elastomeric element II (9) and limiting stand II (8);
Described rack and pinion steering gear I (3) comprises and is installed in the cylindrical shell I and pitch wheel I and tooth bar I (19), described cylindrical shell I open at both ends, and the direction of motion of described tooth bar I (19) is parallel to the upper surface of base (7); Described cylindrical shell I is installed on the bearing I (4), and the lower end of described bearing I (4) is fixed on the upper surface of base (7); The left end of described tooth bar I (19) is connected with the right-hand member of first guide pole (18),
The left end of described first guide pole (18) contacts with the right-hand member of elastomeric element I (2), and the left end of described elastomeric element I (2) is connected with the right side of limiting stand I (1) on being fixed on base (7);
Described rack and pinion steering gear II (11) comprises and is installed in the cylindrical shell II and pitch wheel II and tooth bar II (20), described cylindrical shell II open at both ends, and the direction of motion of described tooth bar II (20) is parallel to the upper surface of base (7); Described cylindrical shell II is installed on the bearing II (6), and the lower end of described bearing II (6) is fixed on the upper surface of base (7);
Described limiting stand II (8) is fixed on the base (7), and the left side of described limiting stand II (8) is connected with the right-hand member of elastomeric element II (9), and the left end of described elastomeric element II (9) contacts with the right-hand member of second guide pole (22);
Pull pressure sensor I (5) is installed between the left end of the right-hand member of described tooth bar I (19) and tooth bar II (20), pull pressure sensor II (10) is installed between the left end of the right-hand member of described tooth bar II (20) and second guide pole (22);
Described base (7) upper surface also is equipped with the bracing or strutting arrangement II (12) of the tested electronic power assist steering system of carrying (15) and the bracing or strutting arrangement I (13) of carrying standard electronic servo steering system (14);
The upper end closure dish I of the input shaft I in the described standard electronic servo steering system (14), the lower end of transmission shaft I (16) cooperate with described gear I; The upper end closure dish II of the input shaft II in the described tested electronic power assist steering system (15), the lower end of transmission shaft II (17) cooperate with described gear II.
2. automotive electronics servo steering system proving installation according to claim 1, it is characterized in that: described elastomeric element I (2) and elastomeric element II (9) are volute springs.
3. automotive electronics servo steering system proving installation according to claim 1, it is characterized in that: described bracing or strutting arrangement II (12) and/or bracing or strutting arrangement I (13) comprise the column perpendicular to base (7) upper surface, and the upper end of described column connects the bearing diagonal plate.
4. automotive electronics servo steering system proving installation according to claim 1 is characterized in that: the outer wall of described cylindrical shell I and/or cylindrical shell II is connected with base (7) upper surface by secondary supporting seat.
5. the method that adopts the described device of 1～4 arbitrary claim to test is characterized in that: installation code electronic power assist steering system makes the lower end of input shaft I of described standard electronic servo steering system cooperate with described gear I; Tested electronic power assist steering system is installed, makes the lower end of input shaft II of described tested electronic power assist steering system cooperate with described gear II; When tested electronic power assist steering system works, described standard electronic servo steering system applies resistance to tested electronic power assist steering system.
6. the method that adopts the described device of 1～4 arbitrary claim to test is characterized in that, may further comprise the steps:
1) installation code electronic power assist steering system makes the lower end of input shaft I of described standard electronic servo steering system cooperate with described gear I;
2) tested electronic power assist steering system is installed, makes the lower end of input shaft II of described tested electronic power assist steering system cooperate with described gear II;
3) according to design parameter, determine bearing circle II corner number of degrees Φ, vehicle velocity V and act on relation between the resistance F on the tooth bar I, be i.e. F
m=h(Φ, V);
4) set vehicle velocity V=V
1, the bearing circle II of tested electronic power assist steering system upper end is applied moment of torsion, make its rotation, namely make described tooth bar II be pushed to an end of pull pressure sensor II; When the described bearing circle II anglec of rotation is Φ
1The time, (by angular velocity and the angular acceleration of sensor record bearing circle this moment) described pull pressure sensor II record resistance F
1, described resistance F
1Provided by the elastomeric element I; With Φ
1And V
1Substitution F
m=h(Φ V), obtains target loading force F
M1=h(Φ
1, V
1), calculate F
M1With F
1Between difference F
2=h(Φ
1, V
1)-F
1The bearing circle II is from Φ
1Rotate to Φ
2In the process, provide power F by described standard electronic servo steering system to tooth bar II direction of motion
2, measure the moment of torsion M that is applied to this moment on the bearing circle II by sensor
1
5) the bearing circle II is just returned, set vehicle velocity V=V
1, the bearing circle II of tested electronic power assist steering system upper end is applied the moment of torsion opposite with the step 4) direction, make its rotation, namely make described tooth bar II be pushed to an end of pull pressure sensor I; When the described bearing circle II anglec of rotation is Φ
3The time, (by angular velocity and the angular acceleration of sensor record bearing circle this moment) described pull pressure sensor II record resistance F
3, described resistance F
3Provided by the elastomeric element II; With Φ
3And V
1Substitution F
m=h(Φ V), obtains target loading force F
M3=h(Φ
3, V
1), calculate F
M3With F
3Between difference F
4=h(Φ
3, V
1)-F
3(the bearing circle II anglec of rotation is Φ
1Back continuation rotation) the bearing circle II is from Φ
3Rotate to Φ
4In the process, provide power F by described standard electronic servo steering system to tooth bar II direction of motion
4, measure the moment of torsion M that is applied to this moment on the bearing circle II by sensor
2
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| CN106066246A (en) * | 2015-04-20 | 2016-11-02 | 通用汽车环球科技运作有限责任公司 | For determining the system and method for steering behaviour |
| CN114608845A (en) * | 2022-03-08 | 2022-06-10 | 苏州睿集汽车技术有限公司 | EPS (electric Power storage) in-loop simulation test bench for intelligent driving of automobile |
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