CN102494878A - Automatic torsion load frequency spectrum loading system and loading method thereof - Google Patents
Automatic torsion load frequency spectrum loading system and loading method thereof Download PDFInfo
- Publication number
- CN102494878A CN102494878A CN2011103624357A CN201110362435A CN102494878A CN 102494878 A CN102494878 A CN 102494878A CN 2011103624357 A CN2011103624357 A CN 2011103624357A CN 201110362435 A CN201110362435 A CN 201110362435A CN 102494878 A CN102494878 A CN 102494878A
- Authority
- CN
- China
- Prior art keywords
- load
- loading
- card
- point
- electrically connected
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Feedback Control In General (AREA)
Abstract
The invention discloses an automatic torsion load frequency spectrum loading system. A direct current motor is adopted for loading, a torsion sensor is used for testing load, and an industrial personal computer is used for controlling the loading processing; the direct current motor is electrically connected with a constant-current constant-voltage module, a voltage control signal input end of which is electrically connected with an output end of a manual/automatic conversion switch; one of two input ends of the conversion switch is electrically connected with an output signal of a potentiometer voltage adjusting circuit, and the other input end of the conversion switch is electrically connected with an output signal of a D/A card; the output of the torsion sensor is electrically connected with a simulation signal input end of the A/D card; the D/A card and the A/D card are all arranged in the industrial personal computer, and all have isolation functions; and automatic frequency spectrum loading process control application software is preassembled in the industrial personal computer, and a controlled variable-load relationship model and a practical load PID digital regulator are built in the software. The automatic torsion load frequency spectrum loading system can realize the automatic frequency spectrum loading of preloaded spectrum signals, and also can realize the free switching between the manual working mode and the automatic working mode.
Description
Technical field
The invention belongs to the mechanical test technical field, relate to the automatic frequency spectrum loading system and the loading method thereof of torque load, in particular for the automatic frequency spectrum loading system of torque load and the loading method thereof of vehicle and agricultural machinery component capabilities engine bench test device.
Background technology
Because actual pavement test or field test receive the influence of factors such as seasonal variations, test site bigger; Need lot of manpower and material resources during test; And the test period is longer, so the performance test of vehicle and agricultural machinery parts test is generally all carried out through indoor bench test.But vehicle and agricultural machinery parts real road go or the farm work process in; Its operating load is dynamic change, only carries out static load research through indoor bench test and can not deeply disclose vehicle and agricultural machinery parts response characteristic and the real work performance thereof to dynamic load.Therefore, when indoor bench test, the simulation real road goes or the farm work operating mode, and is to being loaded representativeness and the accuracy that dynamic load can significantly improve indoor bench test by the examination parts, significant.But the vehicle real road goes or the dynamic load during the agricultural machinery farm work mostly is continuous random load, has very wide frequency band range, if on indoor stand, carry out simulation loading, requires very high to the dynamic perfromance of charger.
Existing vehicle and the indoor stand of agricultural machinery component characteristic test mostly adopt Dyn. or magnetic powder brake to load.Chinese patent number is 200620130446.7, name is called " Farm Tractor driving System Load Run-in Stand "; The employing Dyn. loads; Use the torsion torque sensor to detect actual loaded load, utilize long-range industrial computer to load moment of torsion through the adjustment of programmed control Dyn..Chinese patent number is 200410019970.2, name is called " automobile gearbox loads and detects testing table "; The employing direct current generator loads; Use digital quadrant DC arrangements for speed regulation adjusting dc motor speed and obtain different load-torques, adopt industrial control computer system and measure and control instrument to realize the automatic control of testing process.Chinese patent numbers 89201057.6, name are called " vehicle towed test system controlled by computer hauled load bringing device "; The employing magnetic powder brake loads; Form the load closed-loop control system by microcomputer, controller, strain chip pulling force sensor and constant force device, passing ratio control realizes the stable control of load.Above system designs to the needs that load steady load, though can change load through manual shift or programmed control, can't realize the loading by the predetermined fast-changing dynamic load of rule (being loading spectrum).
Summary of the invention
The objective of the invention is to the deficiency of above-mentioned existing automatic loading device or system and automatic frequency spectrum loading system of a kind of torque load and loading method thereof are provided; Frequency band range is wide, the Load Control precision high; The automatic frequency spectrum that can realize the predetermined load spectrum signal loads, and can realize that hand/working method freely switches automatically.
The automatic frequency spectrum loading system of torque load of the present invention adopts following technical scheme: comprise direct current loading motor, torque sensor and industrial control computer; The direct current loading motor is arranged on the testboard bay; One end of torque sensor and the output shaft mechanical connection of direct current loading motor; Parts to be tested on the other end and the testboard bay or speed change gear output shaft mechanical connection; The computer application software of the built-in D/A card of industrial control computer, A/D card and automatic frequency spectrum loading procedure control; The D/A card is built-in with the analog quantity spacing output circuit, and the A/D card is built-in with analog quantity and isolates input circuit, and the computer application software of frequency spectrum loading procedure control is built-in with " controlled quentity controlled variable---load " relational model and real load pid number regulator automatically; The output terminal of torque sensor is electrically connected the A/D card; The field copper of direct current loading motor is electrically connected with the lead-out terminal of constant current constant voltage module; The constant current constant voltage module is electrically connected external electrical network and hand/automatic change over output terminal respectively, and hand/automatic change over has the input end of two mutual exclusions, when it gets to " manually " position; First input end is electrically connected the potentiometer regulating circuit; When it got to " automatically " position, second input end was electrically connected the D/A card, and two input ends of potentiometer regulating circuit are electrically connected direct current regulation circuit.
The technical scheme that the loading method of the automatic frequency spectrum loading system of torque load of the present invention adopts is to comprise the steps:
A, with the loading spectrum signal with the stored in form of loading spectrum file in industrial control computer and read the loading spectrum file, comprise the load value and the duration of total number, maximum load, minimum load and each point of load of all points of load in the loading spectrum file;
B, judge whether maximum load and minimum load surpass predefined limit value; If transfinite; Then report to the police and do not carry out loading; Otherwise industrial control computer reads the data of first point of load in the total number of the point of load, confirms to export to the size of the controlled quentity controlled variable of D/A card according to " controlled quentity controlled variable---load " relational model;
C, convert controlled quentity controlled variable into voltage control signal output, and start timer duration of this point of load regularly through the D/A card;
D, industrial control computer judge that whether the duration of this point of load is less than a load regulation and control cycle; If less than, then the waiting timer timing arrives; If be not less than, then the output signal of torque sensor is gathered through the A/D card, calculate real load, by real load pid number regulator controlled quentity controlled variable is regulated, through the new controlled quentity controlled variable of D/A card output, and revise the residue duration;
E, carry out the duration whether less than the judgement in a load regulation and control cycle, regulation and control are arrived until the timer timing so repeatedly, and this point of load output finishes;
F, industrial control computer read the data and the output of the next point of load, and so output of the point of load is one by one all exported until all points of load and to be finished.
Compared with prior art, the present invention has the following advantages:
1, can read the loading spectrum signal that is stored in the loading spectrum file automatically, control the entire spectrum loading procedure automatically, and can export load to reality and carry out the PID adjusting, the loading system spectral range is wide, dynamic perfromance good, actual output load is accurate.
2, can realize hand/automatically working method conversion, can come control loaded load, also can control the D/A card and load automatically by the predetermined load spectrum signal by industrial control computer by the adjusting knob of manual work through the regulator potentiometer regulating circuit.
Description of drawings
Fig. 1 is the hardware configuration synoptic diagram of the automatic frequency spectrum loading system of the present invention;
Fig. 2 is the execution schematic flow sheet of automatic frequency spectrum loading procedure.
Among the figure: 1. testboard bay; 2. direct current loading motor; 3. torque sensor; 4. parts to be tested or speed change gear; 5. industrial control computer; 6. direct current regulation circuit; 7. potentiometer regulating circuit; 8. hand/automatic change over; 9. constant current constant voltage module; 10. external electrical network.
Embodiment
As shown in Figure 1, be the hardware composition frame chart of automatic frequency spectrum loading system, the automatic frequency spectrum loading system of torque load comprises direct current loading motor 2, torque sensor 3 and industrial control computer 5.Direct current loading motor 2 is arranged on the testboard bay 1; One end of torque sensor 3 and the output shaft mechanical connection of direct current loading motor 2; Parts to be tested on the other end and the testboard bay 1 or speed change gear 4 output shaft mechanical connections, direct current loading motor 2 drives running by parts to be tested or speed change gear 4.The field copper of direct current loading motor 2 is electrically connected with the lead-out terminal of constant current constant voltage module 9.The power input terminal of constant current constant voltage module 9 is electrically connected with external electrical network 10, and the voltage control signal input terminal of constant current constant voltage module 9 is electrically connected with the output terminal of hand/automatic change over 8.When voltage control signal changed, the output current of constant current constant voltage module 9 (also being the exciting current of direct current loading motor 2) changed thereupon, and the moment of resistance that is added on parts to be tested or the speed change gear 4 by direct current loading motor 2 also changes thereupon.Hand/automatic change over 8 has the input end of an output terminal and two mutual exclusions.When it got to " manually " position, input end was connected with the input end electricity of the output signal end that is electrically connected potentiometer regulating circuit 7; When it got to " automatically " position, input end was connected with the input end electricity that is electrically connected D/A card output signal end.Potentiometer regulating circuit 7 has an output terminal and two input ends, and two input ends are electrically connected direct current regulation circuit 6.The D/A card is arranged in the industrial control computer 5, and the D/A card is built-in with the analog quantity spacing output circuit, has analog quantity and isolates output function.The output signal end of torque sensor 3 is electrically connected the input end of analog signal of A/D card.The A/D card is arranged in the industrial control computer 5, and the A/D card is built-in with analog quantity and isolates input circuit, has analog quantity and isolates input function.Prepackage has the computer application software of realizing automatic frequency spectrum loading procedure control in the industrial control computer 5, is built-in with " controlled quentity controlled variable---load " relational model and real load pid number regulator in the frequency spectrum loading procedure control application software automatically." controlled quentity controlled variable---load " relational model has confirmed that predetermined loaded load and industrial control computer 5 export to the corresponding relation between the controlled quentity controlled variable of D/A card; And the difference between the real load that real load pid number regulator can record according to predetermined loaded load and torque sensor 3 is exported to the controlled quentity controlled variable of D/A card and is carried out the PID adjusting to industrial control computer 5.
As shown in Figure 2, be the execution flow process of automatic frequency spectrum loading procedure.The loading spectrum signal with the stored in form of loading spectrum file in industrial control computer 5.The loading spectrum file adopts the .txt document format data, comprises that load is counted, load range and three data fields of point of load data, and point of load data field comprises long shaping data, the total number of the point of load in the storage loading spectrum file; The load range district comprises two floating type data, and first is the maximum load in all points of load, and second is the minimum load in all points of load, the kN.m of unit; Point of load data field is concrete point of load data, stores the load value and the duration of each point of load successively, and load value is the floating type data, the kN.m of unit, and the duration also is the floating type data, unit second.Read the loading spectrum file by industrial control computer 5, judge whether maximum load and minimum load surpass predefined limit value, the load limit value can preestablish on the interface of automatic frequency spectrum loading procedure control application software in manual work.If transfinite, then provide overload alarm, and do not carry out loading; If do not transfinite, then industrial control computer 5 reads the data of first point of load, confirms to export to the size of the controlled quentity controlled variable of D/A card according to " controlled quentity controlled variable---load " relational model; Then, convert controlled quentity controlled variable into voltage control signal output, and start the duration of this point of load of timer timing immediately through the D/A card.Next, industrial control computer 5 judge this point of load duration whether less than a load regulation and control cycle.If less than, then directly the waiting timer timing arrives; If be not less than, then the output signal of torque sensor 3 is gathered through the A/D card, calculate real load, by real load pid number regulator controlled quentity controlled variable is regulated, through the new controlled quentity controlled variable of D/A card output, and revise the residue duration.And then carry out the duration whether less than the judgement in a load regulation and control cycle, regulation and control are arrived until the timer timing so repeatedly.The timer timing arrives, and this point of load output finishes, and industrial control computer 5 reads the data and the output of the next point of load immediately.So output of the point of load is one by one all exported until all points of load and to be finished.
Should be noted that at last; Above embodiment is only unrestricted in order to technical scheme of the present invention to be described; Although with reference to preferred embodiment the present invention is specified, those of ordinary skill in the art should be appreciated that and can make amendment or be equal to replacement technical scheme of the present invention; And not breaking away from the spirit and the scope of technical scheme of the present invention, it all should be encompassed within the claim scope of the present invention.
Claims (4)
1. automatic frequency spectrum loading system of torque load; Comprise direct current loading motor 2, torque sensor 3 and industrial control computer 5; Direct current loading motor (2) is arranged on the testboard bay (1); The output shaft mechanical connection of one end of torque sensor (3) and direct current loading motor (2); Parts to be tested on the other end and the testboard bay (1) or speed change gear (4) output shaft mechanical connection is characterized in that: the computer application software of the built-in D/A card of said industrial control computer (5), A/D card and automatic frequency spectrum loading procedure control, and the D/A card is built-in with the analog quantity spacing output circuit; The A/D card is built-in with analog quantity and isolates input circuit, and the computer application software of frequency spectrum loading procedure control is built-in with " controlled quentity controlled variable---load " relational model and real load pid number regulator automatically; The output terminal of torque sensor (3) is electrically connected the A/D card; The field copper of direct current loading motor (2) is electrically connected with the lead-out terminal of constant current constant voltage module (9); Constant current constant voltage module (9) is electrically connected external electrical network (10) and hand/automatic change over (8) output terminal respectively; Hand/automatic change over (8) has the input end of two mutual exclusions; When it got to " manually " position, first input end was electrically connected potentiometer regulating circuit (7), when it gets to " automatically " position; Second input end is electrically connected the D/A card, and two input ends of potentiometer regulating circuit (7) are electrically connected direct current regulation circuit (6).
2. the loading method of the automatic frequency spectrum loading system of torque load according to claim 1 is characterized in that comprising the steps:
A, with the loading spectrum signal with the stored in form of loading spectrum file in industrial control computer (5) and read the loading spectrum file, comprise the load value and the duration of total number, maximum load, minimum load and each point of load of all points of load in the loading spectrum file;
B, judge whether maximum load and minimum load surpass predefined limit value; If transfinite; Then report to the police and do not carry out loading; Otherwise industrial control computer (5) reads the data of first point of load in the total number of the point of load, confirms to export to the size of the controlled quentity controlled variable of D/A card according to " controlled quentity controlled variable---load " relational model;
C, convert controlled quentity controlled variable into voltage control signal output, and start timer duration of this point of load regularly through the D/A card;
D, industrial control computer (5) judge that whether the duration of this point of load is less than a load regulation and control cycle; If less than, then the waiting timer timing arrives; If be not less than, then the output signal of torque sensor (3) is gathered through the A/D card, calculate real load, by real load pid number regulator controlled quentity controlled variable is regulated, through the new controlled quentity controlled variable of D/A card output, and revise the residue duration;
E, carry out the duration whether less than the judgement in a load regulation and control cycle, regulation and control are arrived until the timer timing so repeatedly, and this point of load output finishes;
F, industrial control computer (5) read the data and the output of the next point of load, and so output of the point of load is one by one all exported until all points of load and to be finished.
3. loading method according to claim 2; It is characterized in that: said loading spectrum file adopts the .txt document format data; Comprise that load is counted, load range and three data fields of point of load data; Point of load data field comprises long shaping data, the total number of the point of load in the storage loading spectrum file; The load range district comprises two floating type data, and first is the maximum load in all points of load, and second is the minimum load in all points of load; Point of load data field is concrete point of load data, stores the load value and the duration of each point of load successively, and load value is the floating type data, and the duration is the floating type data.
4. loading method according to claim 2 is characterized in that: said " controlled quentity controlled variable---load " relational model is to confirm that predetermined loaded load and industrial control computer (5) export to the model of the corresponding relation between the controlled quentity controlled variable of D/A card; Difference between the real load that predetermined loaded load of said real load pid number regulator basis and torque sensor (3) record is exported to the controlled quentity controlled variable of D/A card and is carried out the PID adjusting to industrial control computer (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110362435.7A CN102494878B (en) | 2011-11-16 | 2011-11-16 | Automatic torsion load frequency spectrum loading system and loading method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110362435.7A CN102494878B (en) | 2011-11-16 | 2011-11-16 | Automatic torsion load frequency spectrum loading system and loading method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102494878A true CN102494878A (en) | 2012-06-13 |
| CN102494878B CN102494878B (en) | 2015-02-04 |
Family
ID=46186720
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110362435.7A Active CN102494878B (en) | 2011-11-16 | 2011-11-16 | Automatic torsion load frequency spectrum loading system and loading method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102494878B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103170910A (en) * | 2013-01-08 | 2013-06-26 | 北京工业大学 | Numerical control grinder load spectrum data transfer sampling rate device and numerical control grinder load spectrum data transfer sampling rate method |
| CN105890904A (en) * | 2014-12-12 | 2016-08-24 | 广西大学 | Load transformation control method of servo motor test platform |
| CN108267313A (en) * | 2017-12-27 | 2018-07-10 | 中国航发中传机械有限公司 | The load test control method and system of tail reducer of helicopter control stick bearing |
| CN109405873A (en) * | 2018-12-07 | 2019-03-01 | 北京理工大学 | A kind of Dynamic Load Spectrum quick high accuracy loading control method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200986494Y (en) * | 2006-11-17 | 2007-12-05 | 中国一拖集团有限公司 | Tractor transmission load running test-bed |
| JP2010046766A (en) * | 2008-08-22 | 2010-03-04 | Maeda Metal Industries Ltd | Tightening torque measuring unit |
| CN101793605A (en) * | 2010-03-31 | 2010-08-04 | 哈尔滨工业大学 | Dynamic loading methods based on servo motor |
| CA2698456A1 (en) * | 2010-03-30 | 2011-09-30 | Honda Motor Co., Ltd. | Rotary drive tool torque testing |
| CN102213627A (en) * | 2010-04-07 | 2011-10-12 | 鸿富锦精密工业（深圳）有限公司 | Torque testing system and method |
-
2011
- 2011-11-16 CN CN201110362435.7A patent/CN102494878B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200986494Y (en) * | 2006-11-17 | 2007-12-05 | 中国一拖集团有限公司 | Tractor transmission load running test-bed |
| JP2010046766A (en) * | 2008-08-22 | 2010-03-04 | Maeda Metal Industries Ltd | Tightening torque measuring unit |
| CA2698456A1 (en) * | 2010-03-30 | 2011-09-30 | Honda Motor Co., Ltd. | Rotary drive tool torque testing |
| CN101793605A (en) * | 2010-03-31 | 2010-08-04 | 哈尔滨工业大学 | Dynamic loading methods based on servo motor |
| CN102213627A (en) * | 2010-04-07 | 2011-10-12 | 鸿富锦精密工业（深圳）有限公司 | Torque testing system and method |
Non-Patent Citations (1)
| Title |
|---|
| 冯剑: "小型农业作业机测试***的动态加载研究", 《中国优秀硕士学位论文全文数据库 信息科技辑》 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103170910A (en) * | 2013-01-08 | 2013-06-26 | 北京工业大学 | Numerical control grinder load spectrum data transfer sampling rate device and numerical control grinder load spectrum data transfer sampling rate method |
| CN103170910B (en) * | 2013-01-08 | 2015-06-17 | 北京工业大学 | Numerical control grinder load spectrum data transfer sampling rate device and numerical control grinder load spectrum data transfer sampling rate method |
| CN105890904A (en) * | 2014-12-12 | 2016-08-24 | 广西大学 | Load transformation control method of servo motor test platform |
| CN105890904B (en) * | 2014-12-12 | 2018-04-03 | 广西大学 | A kind of servomotor testing platform load conversion control method |
| CN108267313A (en) * | 2017-12-27 | 2018-07-10 | 中国航发中传机械有限公司 | The load test control method and system of tail reducer of helicopter control stick bearing |
| CN108267313B (en) * | 2017-12-27 | 2019-09-17 | 中国航发中传机械有限公司 | The load test control method and system of tail reducer of helicopter control stick bearing |
| CN109405873A (en) * | 2018-12-07 | 2019-03-01 | 北京理工大学 | A kind of Dynamic Load Spectrum quick high accuracy loading control method |
| CN109405873B (en) * | 2018-12-07 | 2020-08-11 | 北京理工大学 | Rapid high-precision loading control method for dynamic load spectrum |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102494878B (en) | 2015-02-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102129035A (en) | Comprehensive test device and test method for automobile starter | |
| CN102287419B (en) | Device and method for automatically testing performance of steering engine servo valve | |
| CN201576080U (en) | Power battery performance comprehensive test device | |
| CN202108811U (en) | Automatic testing device of servo valve performance of steering engine | |
| CN102494878A (en) | Automatic torsion load frequency spectrum loading system and loading method thereof | |
| CN204202894U (en) | A kind of Novel traction machine performance testing device | |
| CN102033201A (en) | Simulation device and method using AC servo motor as variable-torque load | |
| CN109470958A (en) | A kind of AMT power transmission system of automatic gearbox assembly testing experiment platform | |
| CN102445943A (en) | Development testing method for automobile electric controlling component and development testing platform | |
| CN103411715A (en) | Torque motor resistance moment testing system | |
| CN101241146A (en) | Automatic range volt-ampere phase meter | |
| CN103575426A (en) | Calibration method of water temperature sensor | |
| CN106932730B (en) | Measuring device and measuring method for power characteristics of lithium power battery system | |
| CN102004463A (en) | Control device for integrated test bench of clutch friction disc | |
| CN201867477U (en) | Novel testing table stand for hybrid power motor | |
| CN201368908Y (en) | Automobile dynamo performance testing device | |
| CN1655420A (en) | Charge method for lead-acid storage battery and charger thereof | |
| CN203376091U (en) | Moment motor resistance moment test system | |
| CN111864859A (en) | System and method for prolonging service life of lithium battery pack with constant-current and constant-voltage charging and discharging | |
| CN205786892U (en) | Electrokinetic cell simulator | |
| CN107063595A (en) | A kind of accurate main shaft bidirectional static rigidity test loading device | |
| CN108333523B (en) | Testing device and testing method for power battery of electric automobile | |
| CN202583866U (en) | Automobile electric control element developing and testing platform | |
| CN101975926A (en) | Analog battery | |
| CN107543685A (en) | A kind of Automatic torsion load frequency spectrum loading system and its loading method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |