CN108132147A - A kind of electrical analogue compensation method of automobile clutch testing stand and Rotary Inertia of Flywheel - Google Patents
A kind of electrical analogue compensation method of automobile clutch testing stand and Rotary Inertia of Flywheel Download PDFInfo
- Publication number
- CN108132147A CN108132147A CN201810207840.3A CN201810207840A CN108132147A CN 108132147 A CN108132147 A CN 108132147A CN 201810207840 A CN201810207840 A CN 201810207840A CN 108132147 A CN108132147 A CN 108132147A
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- antithesis
- disk
- flywheel
- testing stand
- slide unit
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- 238000012360 testing method Methods 0.000 title claims abstract description 47
- 238000000034 method Methods 0.000 title claims abstract description 9
- 238000005259 measurement Methods 0.000 claims abstract description 25
- 238000003825 pressing Methods 0.000 claims abstract description 11
- 230000006835 compression Effects 0.000 claims abstract description 7
- 238000007906 compression Methods 0.000 claims abstract description 7
- 238000000926 separation method Methods 0.000 claims abstract description 3
- 230000000694 effects Effects 0.000 claims description 3
- 238000012856 packing Methods 0.000 claims description 3
- 230000008878 coupling Effects 0.000 abstract description 4
- 238000010168 coupling process Methods 0.000 abstract description 4
- 238000005859 coupling reaction Methods 0.000 abstract description 4
- 238000002474 experimental method Methods 0.000 abstract description 2
- 238000005096 rolling process Methods 0.000 description 4
- 230000005611 electricity Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 239000002783 friction material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000009666 routine test Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- HOWHQWFXSLOJEF-MGZLOUMQSA-N systemin Chemical compound NCCCC[C@H](N)C(=O)N[C@@H](CCSC)C(=O)N[C@@H](CCC(N)=O)C(=O)N[C@@H]([C@@H](C)O)C(=O)N[C@@H](CC(O)=O)C(=O)OC(=O)[C@@H]1CCCN1C(=O)[C@H]1N(C(=O)[C@H](CC(O)=O)NC(=O)[C@H](CCCN=C(N)N)NC(=O)[C@H](CCCCN)NC(=O)[C@H](CO)NC(=O)[C@H]2N(CCC2)C(=O)[C@H]2N(CCC2)C(=O)[C@H](CCCCN)NC(=O)[C@H](CO)NC(=O)[C@H](CCC(N)=O)NC(=O)[C@@H](NC(=O)[C@H](C)N)C(C)C)CCC1 HOWHQWFXSLOJEF-MGZLOUMQSA-N 0.000 description 1
- 108010050014 systemin Proteins 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/02—Gearings; Transmission mechanisms
- G01M13/022—Power-transmitting couplings or clutches
Abstract
A kind of automobile clutch testing stand, by engine base (1), main motor (2), shaft coupling (3), bearing block (4), flywheel group (5), separation cylinder (6), release bearing (7) and slide unit assembly (8) composition.Slide unit assembly (8) can be moved forward and backward and fix in the case where mobile mechanism (17) pushes and pulls.Slide unit assembly (8) is made of carriage saddle (9), torque measurement disk (10), antithesis disk (11), antithesis dish axle (12), compression force snesor (13), adjusting seat (14), test specimen clutch cover and plate assembly (15), test specimen driven disc (16) and slide unit mobile mechanism (17).A kind of electrical analogue compensation method of automobile clutch flywheel rotary inertia makes flywheel inertia combination realize stepless combination using variable-frequency motor and electrical analogue compensation way, can accurately provide experiment inertia；The pressing force of driven disc on the testing stand can be adjusted, and measured in real time by force snesor.
Description
Technical field：
Patent of the present invention is related to a kind of automobile clutch testing stand, belongs to automobile and friction materials technology field.
Background technology：
It is currently used for completing《Automobile dry type clutch assembly Bench test methods》(QC/T27-2014) standard gauge
The testing stand of fixed test event mainly completes following test with mode of braking：
301 clutch friction plate routine test projects；
304 VW-TL103 masses' company technique code tests；
3015 low energy (6.9kJ) are tested；
Energy (36kJ) is tested in 337；
3103 high-energy (50kJ) are tested；
3101 fade tests；
Existing clutch test stand stores energy using flywheel group, then the braking of flywheel group is completed by subject brake each
Item test.
The shortcomings that existing clutch test stand is；
1. the flywheel inertia configuration of flywheel group has grade, it is impossible to which precise combination goes out required inertia, it has to change and turn
Speed obtains required energy.And rotating speed directly affects friction linear velocity and then influences fretting wear, influences test result.
2. in the obtained test result of clutch test stand, it is most important that friction coefficient μ, μ values are calculated by following formula
Go out；
In formula；
The braking moment that T--- is measured
N--- is to the pressing force of driven disc
R--- friction radius
Since N is generated by the disk spring on clutch cover and plate assembly, so before the test, it is necessary to special with another
Device measuring goes out the pressing force of clutch cover and plate assembly, very inconvenient.On the other hand, the pressing force of disc spring can change.Seriously
Affect measuring accuracy.
Invention content：
The present invention in view of the shortcomings of the prior art, proposes a kind of novel automobile clutch testing stand and Rotary Inertia of Flywheel
Electrical analogue compensation method.
With reference to attached drawing, it is described as follows：
A kind of automobile clutch testing stand on 1 upper surface of engine base, is sequentially equipped with main motor 2, shaft coupling along same axis
Device 3, bearing block 4, flywheel group 5 detach cylinder 6, release bearing 7 and slide unit assembly 8, it is characterised in that：The slide unit assembly 8 exists
Mobile mechanism 17 can be moved forward and backward and fix under pushing and pulling；
The slide unit assembly 8 is by carriage saddle 9, torque measurement disk 10, antithesis disk 11, antithesis dish axle 12, compression force snesor
13rd, adjusting seat 14, test specimen clutch cover and plate assembly 15, test specimen driven disc 16 form；
The test specimen clutch cover and plate assembly 15 is packed on torque measurement disk 10, the hollow shaft and bearing of torque measurement disk 10
Seat 9 is rotatablely connected；In the hollow shaft of torque measurement disk 10, the antithesis axis 12 equipped with antithesis disk 11, antithesis axis 12 can axis shifting
It is dynamic；There are three idler wheel 22, idler wheel 22 matches that merge can only with the slot on torque measurement disk 10 for the first-class packing of excircle of antithesis disk 11
Axial movement；Equipped with subject driven disc 16, cap assembly 15 and antithesis disk among test specimen clutch cover and plate assembly 15 and antithesis disk 11
The pressing force that 11 pairs of driven discs 16 generate can be adjusted by adjusting seat 14；The rear end of antithesis dish axle 12 is equipped with compression force snesor
13。
The main motor (2) is frequency control motor.
Measuring arm of force 19 is fixed on the torque measurement disk 10, the end of measuring arm of force 19, which is equipped with, to be fixed on carriage saddle 9
Torgue measurement sensor 20.
The electrical analogue compensation method of a kind of automobile clutch testing stand and Rotary Inertia of Flywheel, includes the following steps：
Step 1：It is the moment values that torque measurement disk measures to measure braking moment TB, TB；
Step 2：Calculate the due deceleration d ω/dt of torque TB effect Imitating inertia
Step 3：Compare the deceleration calculated in actual deceleration degree (d ω/dt) ' and step 2；
Step 4：Control motor, which applies torque, makes actual deceleration degree equal with calculating deceleration, i.e. d ω/dt=(d ω/
dt)’。
The advantageous effect of of the invention (invention) is：Make flywheel inertia combination real using variable-frequency motor and electrical analogue compensation way
Existing stepless combination, can accurately provide experiment inertia；The pressing force of driven disc can be adjusted, and sensed by power on the testing stand
Device measures in real time, without clutch is removed the progress pressing force adjustment on proprietary testing stand.
Description of the drawings
Fig. 1 is a kind of automobile clutch testing stand front view；
Fig. 2 is the vertical view of Fig. 1；
Fig. 3 is the H direction views of Fig. 1；
Fig. 4 is the K direction views of Fig. 1；
Fig. 5 is the J direction views of Fig. 1；
Fig. 6 is the front view of slide unit assembly 8；
Fig. 7 is the vertical view of Fig. 6；
Fig. 8 is the left view of Fig. 6；
Fig. 9 is the right view of Fig. 6；
Figure 10 is the electrical analogue compensation method flow diagram of Rotary Inertia of Flywheel.
Wherein：1st, engine base 2, main motor 3, shaft coupling 4, bearing block 5, flywheel group 6, separation cylinder
7th, release bearing 8, slide unit assembly 9, carriage saddle 10, torque measurement disk 11, antithesis disk 12, antithesis dish axle
13rd, force snesor 14, adjusting seat 15, test specimen clutch cover and plate assembly 16, test specimen driven disc 17, slide unit are compressed
Mobile mechanism 18, rolling bearing 19, measuring arm of force 20, torgue measurement sensor 21, linear bearing 22, rolling
Wheel
Specific embodiment is as follows：
A kind of automobile clutch testing stand on 1 upper surface of engine base, is sequentially equipped with main motor 2, shaft coupling along same axis
Device 3, bearing block 4, flywheel group 5 detach cylinder 6, release bearing 7 and slide unit assembly 8, it is characterised in that：The slide unit assembly 8 exists
Mobile mechanism 17 can be moved forward and backward and fix under pushing and pulling；
The slide unit assembly 8 is by carriage saddle 9, torque measurement disk 10, antithesis disk 11, antithesis dish axle 12, compression force snesor
13rd, adjusting seat 14, test specimen clutch cover and plate assembly 15, test specimen driven disc 16 form；
The hollow shaft of the torque measurement disk 10 is mounted on by rolling bearing 18 on bearing block 9, can be rotated freely；It turns round
Measuring arm of force 19 is fixed in square Measuring plate 10, the end of measuring arm of force 19 is equipped with the torgue measurement sensor being fixed on carriage saddle 9
20；In the hollow shaft of torque measurement disk 10, the antithesis axis 12 equipped with antithesis disk 11, antithesis dish axle 12 is supported on linear bearing 21
On, antithesis dish axle 12 can axis movement by linear bearing 21；There are three idler wheel 22, rollings for the first-class packing of excircle of antithesis disk 11
Wheel 22 matches with the slot on torque measurement disk 10 and merges and can only move axially；The rear end of antithesis dish axle 12 is equipped with compression force snesor
13；
During actual test, subject clutch cover and plate assembly 15 is on torque measurement disk 10, in cap assembly 15 and antithesis disk 11
Equipped with subject driven disc 16, the pressing force that cap assembly 15 and antithesis disk 11 generate driven disc 16 can be by adjusting seat 14 for centre
Adjustment, the size of pressing force are measured by compression force snesor 13.
Principle of the course of work of testing stand based on the conservation of energy, subject clutch absorb flywheel group in a manner of braking
And the kinetic energy that all revolving parts store on main shaft.When the energy of flywheel group storage and the variant energy of test requirements document, main electricity
Machine output driving or braking torque under the control of a computer system, it is ensured that the braking energy absorbed on subject brake is equal to examination
Test the energy of requirement.
Main motor 2 is frequency control motor, and with frequency converter forming control system, the electricity for realizing rotary inertia is controlled by Figure 10
Analog compensation.
Principle with main motor analog portion mechanical inertia is as follows：
Mechanical analogue is to be loaded using the rotation store kinetic energy of inertial flywheel for brake, braking moment and flywheel inertia,
The relationship of rotating speed can be expressed as：
Or
In formula：
TB--- braking moments；
ε --- flywheel angular deceleration；
I---- flywheel inertias；
ω 0--- flywheel initial angular velocities
ω t--- flywheels are in braking t moment angular speed；
--- the instantaneous deceleration of flywheel；
From the above equation, we can see that when mono- timings of inertia I, braking deceleration is only related with braking moment.Therefore, inertia braking is tested
Essence be exactly to test the deceleration characteristic of inertia system, and then simulated automotive braking deceleration.Here the presence of inertia I be in order to
Store kinetic energy.If energy is constantly exported with motor replaces flywheel store kinetic energy, and keeps braking moment TB and deceleration's
Relationship is constant, then referred to as electrical analogue.Electrical analogue process can be expressed as：
In formula；
TB--- braking moments；
The torque that TM--- motors are exported in brake；
I0--- system mechanics inertia；
ε --- system angular deceleration (flywheel deceleration of mechanical analogue)；
--- the instantaneous deceleration of system；
Formula (1) is substituted into formula (2) to obtain:
I--- is modeled inertia in formula, and numerical value is identical with mechanical analogue inertia.
In formula (3) I and I0 be it is known that therefore, so-called electrical analogue be exactly by control the output torque TM of motor make by
The dynamic utensil of trial-production has the deceleration identical with mechanical analogue systemIn mechanical analogue phylogenetic relationship formula (1)In, TB is
Braking moment, is measured value, and I is known to be modeled inertia.Therefore,Also just it is known that controlled quentity controlled variable can be used as.Formula is seen again
Can be explained in electric analog system, motor output torque TM withRelationship：
As I=I0, i.e. simulated inertia is equal to system mechanics inertia, as mechanical analogue system, motor not output torque；
As I ＜ I0, TM is negative value, i.e., motor output braking moment, torque direction are opposite to the direction of rotation；
As I ＞ I0, TM is positive value, i.e. motor output driving torque, and torque direction is identical with direction of rotation.
Actual deceleration degreeIt can change to obtain by measuring the angular speed in tiny time interval, i.e.,
ω t2---t2 moment angular speed in formula；
ω t1---t1 moment angular speed；
Δ t--- angular speed sampling time intervals.
Claims (4)
1. a kind of automobile clutch testing stand on engine base (1) upper surface, is sequentially equipped with main motor (2) along same axis, connection
Axis device (3), bearing block (4), flywheel group (5), separation cylinder (6), release bearing (7) and slide unit assembly (8), it is characterised in that：
The slide unit assembly (8) can be moved forward and backward and fix in the case where mobile mechanism (17) pushes and pulls；
The slide unit assembly (8) is by carriage saddle (9), torque measurement disk (10), antithesis disk (11), antithesis dish axle (12), pressing force
Sensor (13), adjusting seat (14), test specimen clutch cover and plate assembly (15), test specimen driven disc (16) composition；
The test specimen clutch cover and plate assembly (15) is packed on torque measurement disk (10), the hollow shaft and axis of torque measurement disk (10)
Bearing (9) is rotatablely connected；In the hollow shaft of torque measurement disk (10), the antithesis axis (12) equipped with antithesis disk (11), antithesis axis
It (12) can axis movement；There are three idler wheel (22), idler wheel (22) and torque measurement disks for the first-class packing of excircle of antithesis disk (11)
(10) slot on can only be moved axially with merging；Among test specimen clutch cover and plate assembly (15) and antithesis disk (11) equipped with subject from
Moving plate (16), cap assembly (15) and antithesis disk (11) can adjust the pressing force that driven disc (16) generates by adjusting seat (14)；
The rear end of antithesis dish axle (12) is equipped with compression force snesor (13).
2. a kind of automobile clutch testing stand according to claim 1, it is characterised in that：The main motor (2) is to become
Frequency modulation speed motor.
3. a kind of automobile clutch testing stand according to claim 1, it is characterised in that：On the torque measurement disk (10)
Measuring arm of force (19) is fixed with, the end of measuring arm of force (19) is equipped with the torgue measurement sensor (20) being fixed on carriage saddle (9).
4. a kind of electrical analogue compensation method of automobile clutch testing stand and Rotary Inertia of Flywheel, it is characterised in that：Including following
Step：
Step 1：It is the moment values that torque measurement disk measures to measure braking moment TB, TB；
Step 2：Calculate the due deceleration d ω/dt of torque TB effect Imitating inertia
Step 3：Compare the deceleration calculated in actual deceleration degree (d ω/dt) ' and step 2；
Step 4：Control motor, which applies torque, makes actual deceleration degree equal with calculating deceleration, i.e. d ω/dt=(d ω/dt) '.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810207840.3A CN108132147A (en) | 2018-03-14 | 2018-03-14 | A kind of electrical analogue compensation method of automobile clutch testing stand and Rotary Inertia of Flywheel |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810207840.3A CN108132147A (en) | 2018-03-14 | 2018-03-14 | A kind of electrical analogue compensation method of automobile clutch testing stand and Rotary Inertia of Flywheel |
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| CN108132147A true CN108132147A (en) | 2018-06-08 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110031235A (en) * | 2019-03-20 | 2019-07-19 | 浙江铁流离合器股份有限公司 | A kind of automobile dry type clutch clutch drived disk assy endurance torsion determines machine for testing torsion |
| CN112051052A (en) * | 2020-08-27 | 2020-12-08 | 东风商用车有限公司 | Automobile clutch comprehensive performance test method and test bench |
| CN112304497A (en) * | 2020-10-22 | 2021-02-02 | 吉林大学 | Inertia test stand for wet brake of mine car |
| CN112595503A (en) * | 2020-11-26 | 2021-04-02 | 浙江晟克科技有限公司 | Torsional fatigue test driving mechanism, testing machine, testing method and storage medium |
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| CN107014624A (en) * | 2017-06-15 | 2017-08-04 | 珠海格莱利摩擦材料有限公司 | One kind contracting is than friction material inertia bench |
| CN107525663A (en) * | 2017-09-18 | 2017-12-29 | 江苏科技大学 | A kind of dynamic load simulating test device and method of testing |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110031235A (en) * | 2019-03-20 | 2019-07-19 | 浙江铁流离合器股份有限公司 | A kind of automobile dry type clutch clutch drived disk assy endurance torsion determines machine for testing torsion |
| CN110031235B (en) * | 2019-03-20 | 2023-10-20 | 浙江铁流离合器股份有限公司 | Torsion endurance fixed torque testing machine for dry friction clutch driven disc assembly for automobile |
| CN112051052A (en) * | 2020-08-27 | 2020-12-08 | 东风商用车有限公司 | Automobile clutch comprehensive performance test method and test bench |
| CN112051052B (en) * | 2020-08-27 | 2022-05-03 | 东风商用车有限公司 | Automobile clutch comprehensive performance test method and test bench |
| CN112304497A (en) * | 2020-10-22 | 2021-02-02 | 吉林大学 | Inertia test stand for wet brake of mine car |
| CN112595503A (en) * | 2020-11-26 | 2021-04-02 | 浙江晟克科技有限公司 | Torsional fatigue test driving mechanism, testing machine, testing method and storage medium |
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Application publication date: 20180608 |