CN104111173B - Electromotor irregular rotating speed analog - Google Patents
Electromotor irregular rotating speed analog Download PDFInfo
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- CN104111173B CN104111173B CN201410354260.9A CN201410354260A CN104111173B CN 104111173 B CN104111173 B CN 104111173B CN 201410354260 A CN201410354260 A CN 201410354260A CN 104111173 B CN104111173 B CN 104111173B
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- 230000001788 irregular Effects 0.000 title claims abstract description 47
- 210000000515 Tooth Anatomy 0.000 claims description 34
- 238000001514 detection method Methods 0.000 claims description 10
- 230000001276 controlling effect Effects 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 3
- 101710009100 PLC5 Proteins 0.000 description 4
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- 230000015572 biosynthetic process Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
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Abstract
Present invention is disclosed a kind of electromotor irregular rotating speed analog, including at the uniform velocity input module, speed change input module and differential planet gear mechanism；Described at the uniform velocity input module includes that the first servomotor for providing fixed rotating speed to input, described first servomotor drive the ring gear against rotation of differential planet gear mechanism；Described speed change input module includes tooth bar, one end of described tooth bar is provided with tooth mouth, described tooth mouth engages with input gear, described input gear is taken turns with the pivoted arm of described differential planet gear mechanism and is connected, the other end of described tooth bar is connected with cam, described cam and the second servomotor connect, and in order to make described tooth bar move back and forth, the sun gear of described differential planet gear mechanism is connected with irregular rotating speed output block.The present invention has simple in construction, it is easy to control, and reliability, stability are high, and the feature such as low cost.
Description
Technical field
The invention belongs to automobile engine detection technique field, particularly relate to a kind of electromotor irregular rotating speed analog.
Background technology
Automobile engine is to provide the parts of power for whole automobile, and the power of electromotor exports in crankshaft pulley, owing to following characteristic determines the instantaneous output speed inhomogeneities of belt wheel:
1) four-stroke engine operationally compression stroke piston makees retarded motion, and expansion stroke piston makees accelerated motion so that output speed is irregular, uneven；
2) upshift of vehicle variator in the process of moving, downshift cause electromotor output speed to change brokenly.
Above irregular rotation speed change produces unhelpful crank shaft angle vibration, this angular oscillation is inevitably transferred in whole belt pulley system, the parts of belt and whole belt pulley system are brought harmful effect, produces noise simultaneously and automobile comfort is impacted by vibration.In this belt train, the rotary inertia of electromotor maximum (25 ~ 35 × 10-4kg·m2), therefore on electromotor, fill an overrunning belt pulley can realize only at bent shaft-driven direction transmitting movement, by it can be implemented in engine retard in a flash in make electromotor disengage rapidly, thus it is relatively steady to realize motor speed, reduce belt and the impact of train and energy loss.
The use having been found to surmounts the benefit that motor pulley brings to be had:
1, belt vibration is reduced；
2, belt drives power is reduced；
3, the motion of regulating wheel is reduced；
4, the life-span of belt is improved；
5, the noise of belt train is reduced；
6, reduce the pre-tensioning of belt train, cause reducing CO2Discharge and friction loss.
Due to above-mentioned many advantages, surmount motor pulley at present to be widely used, the most general 20,000,000 of the demand of this part of the whole world, although its structure is the most complicated, but by external maker monopolization supply, mainly produced by the INA of Germany, the NSK of Japan and Canadian Leiden Deng Ji company, particularly the INA of Germany, the said firm from nineteen ninety-five begin to market batch for should part, the product design being early the formation of complete set, the system verified, produce.There are general 5 ~ 7 companies to have been able to produce this part although the most domestic, but the pilot project needed for main engine plants cannot be completed, in default of a crucial checking equipment.A test is wherein had for " durability test " in the test program that main engine plants require, test result is as depicted in figs. 1 and 2, the feature of this test is the high frequency change of rotating speed, because when rotating speed high frequency changes, real-time change cannot be realized owing to rotor exists rotary inertia, this equipment tested test chamber producing this part the most abroad can be carried out at present, due to technical know-how, it is impossible to learn concrete implementation scheme.And the part that domestic manufacturer produces lacks equipment, test cannot have been required according to technical conditions, the most directly use electromotor driving to do experiment or be contained on car and carry out real vehicle operating mode checking, these verify the method for the most off-gauge this product of checking, therefore result is badly all to illustrate that product has met technology requirement, thus obtains main engine plants' accreditation.Although domestic part producer has also put into many time and cost at present, but not yet find reliable and easily reality a scheme, therefore, under this background, develop a kind of irregular device of electromotor being capable of this test requirements document to have great importance.
Summary of the invention
The defect existed in view of above-mentioned prior art, the purpose of the present invention is to propose to a kind of electromotor irregular rotating speed analog, for realizing special engine speed characteristic output, with the real-time rotating speed of simulated engine, thus the part in train is carried out life-span and reliability testing.
The purpose of the present invention will be achieved by the following technical programs:
A kind of electromotor irregular rotating speed analog, including at the uniform velocity input module, speed change input module and differential planet gear mechanism；Described at the uniform velocity input module includes that the first servomotor for providing fixed rotating speed to input, described first servomotor drive the ring gear against rotation of differential planet gear mechanism；Described speed change input module includes tooth bar, one end of described tooth bar is provided with tooth mouth, described tooth mouth engages with input gear, described input gear is taken turns with the pivoted arm of described differential planet gear mechanism and is connected, the other end of described tooth bar is connected with cam, described cam and the second servomotor connect, and in order to make described tooth bar move back and forth, the sun gear of described differential planet gear mechanism is connected with irregular rotating speed output block.
Preferably, described electromotor irregular rotating speed analog, wherein: described differential planet gear mechanism is 2K-H AbaH type differential planet gear mechanism, is provided with the planetary gear of at least one between described sun gear and described gear ring, and described planetary gear is connected with described pivoted arm wheel.
Preferably, described electromotor irregular rotating speed analog, wherein: the number of teeth of described sun gear is a, the number of teeth of described gear ring is n*b, and wherein n is constant-speed ratio, and the number of teeth of described planetary gear meets (b-a)/2.
Preferably, described electromotor irregular rotating speed analog, wherein: described first servomotor and described second servomotor are connected with the PLC being used for controlling output speed respectively, to guarantee that described first servomotor and described second servomotor export satisfactory speed.
Preferably, described electromotor irregular rotating speed analog, wherein: described first servomotor, described second servomotor and described irregular rotating speed output block are connected with the speed detection sensor being used for detecting its output speed respectively, described speed detection sensor is connected with described PLC, to guarantee to collect correct rate signal, then feed back to PLC after data process.
A kind of method obtaining irregular rotating speed based on above-mentioned electromotor irregular rotating speed analog, described first servomotor drives ring gear against rotation, makes described differential planet gear mechanism obtain the input of fixed rotating speed；Described second servomotor makes described tooth bar move back and forth by cam, thus input gear reciprocating rotation described in described rack drives, change rotating speed is passed to described pivoted arm wheel by described input gear, makes described differential planet gear mechanism obtain changing the input of rotating speed；Described differential planet gear mechanism obtains irregular rotating speed after fixed rotating speed and change rotating speed being synthesized, and by sun gear, irregular rotating speed passes to described irregular rotating speed output block.
Preferably, a kind of above-mentioned method obtaining irregular rotating speed, wherein: control described first servomotor and the output speed of described second servomotor by PLC, and the rate signal collected is fed back to PLC by Negotiation speed detection sensor.
The prominent effect of the present invention is:
The electromotor irregular rotating speed analog of the present invention, it is fixed speed part and pace of change part by the uniform velocity input module and speed change input module by the resolution of velocity needed for experimental condition, by reaching required speed after above-mentioned fixed speed and pace of change being synthesized in epicyclic train, there is simple in construction, easily controllable, reliability, stability are high, and the feature such as low cost.
Hereinafter accompanying drawing the most in conjunction with the embodiments, is described in further detail the detailed description of the invention of the present invention, so that technical solution of the present invention is more readily understood, grasps.
Accompanying drawing explanation
Fig. 1 is the result figure of required test speed characteristic low speed sections；
Fig. 2 is the result figure of required test speed characteristic highspeed portion；
Fig. 3 is the systematic schematic diagram of the embodiment of the present invention；
Fig. 4 is the structure chart of the embodiment of the present invention.
Detailed description of the invention
Embodiment:
A kind of electromotor irregular rotating speed analog of the present embodiment, as shown in Fig. 3 ~ Fig. 4, including at the uniform velocity input module 1, speed change input module 2 and differential planet gear mechanism 3；At the uniform velocity input module 1 includes the first servomotor 11 for providing fixed rotating speed to input, and the first servomotor 11 drives the gear ring 31 of differential planet gear mechanism 3 to rotate；Speed change input module 2 includes tooth bar 21, one end of tooth bar 21 is provided with tooth mouth, tooth mouth engages with input gear 22, input gear 22 is taken turns 32 with the pivoted arm of differential planet gear mechanism 3 and is connected, the other end of tooth bar 21 is connected with cam 23, cam 23 is connected with the second servomotor 24, and in order to make tooth bar 21 move back and forth, the sun gear 33 of differential planet gear mechanism 3 is connected with irregular rotating speed output block 4.First servomotor 11 and the second servomotor 24 are connected with the PLC5 being used for controlling output speed, to guarantee that the first servomotor 11 and the second servomotor 24 export satisfactory speed respectively.First servomotor the 11, second servomotor 24 and irregular rotating speed output block 4 are connected with the speed detection sensor 6 being used for detecting its output speed respectively, speed detection sensor 6 is connected with PLC 5, to guarantee to collect correct rate signal, then feed back to PLC5 after data process.
Differential planet gear mechanism 3 is 2K-H AbaH type differential planet gear mechanism, is provided with 2 planetary gears 34 between sun gear 33 and gear ring 31, and planetary gear 34 is connected with pivoted arm wheel 32.The number of teeth of sun gear 33 is a, and the number of teeth of gear ring 31 is n*b, and wherein n is constant-speed ratio, and the number of teeth of planetary gear 34 meets (b-a)/2.For the 2K-H AbaH type differential planet gear mechanism shown in Fig. 4, the relational expression between the angular velocity of its basic building block is: ω a=i
Hab ω b+ibaH ω H, wherein, i Hab
For sun gear 33 and gear ring 31 relative to the ratio of the angular velocity of pivoted arm wheel 32, ω b is the angular velocity of gear ring 31, ibaH is that sun gear 33 and pivoted arm wheel 32 are relative to the ratio of the angular velocity of gear ring 31, ω H is the angular velocity of pivoted arm wheel 32, be can be seen that by this formula, under mechanism determines, if gear ring 31 and pivoted arm wheel 32 to this differential planetary gear train are respectively plus different input speed, just can obtain the speed after pressing formula synthesis at sun gear 33.In the present embodiment, owing to the rotating speed of pivoted arm wheel 32 input is the speed of change, so the speed of synthesis rear sun gear 33 output is also change, the irregular rotating speed obtained is exported by irregular rotating speed output block 4.Preferably, according to planet polling tooth and join tooth principle, Za=14, Zb=4*64 (selected speed ratio is 4), then Zg=(64-14)/2=25 tooth can be taken, thus may be constructed a fully functional planetary differential train.
The electromotor irregular rotating speed analog of application the present embodiment, the method obtaining irregular rotating speed, the first servomotor 11 drives gear ring 31 to rotate, and makes differential planet gear mechanism 3 obtain the input of fixed rotating speed；Second servomotor 24 makes tooth bar 21 move back and forth by cam 23, thus tooth bar 21 drives input gear 22 reciprocating rotation, and change rotating speed is passed to pivoted arm wheel 32 by input gear 22, makes differential planet gear mechanism 3 obtain changing the input of rotating speed；Differential planet gear mechanism 3 obtains irregular rotating speed after fixed rotating speed and change rotating speed being synthesized, and by sun gear 33, irregular rotating speed passes to irregular rotating speed output block 4.Control the first servomotor 11 and output speed of the second servomotor 24 by PLC5, and the rate signal collected is fed back to PLC5 by Negotiation speed detection sensor 6.
The electromotor irregular rotating speed analog of the present embodiment, it is fixed speed part and pace of change part by the uniform velocity input module 1 and speed change input module 2 by the resolution of velocity needed for experimental condition, by reaching required speed after above-mentioned fixed speed and pace of change being synthesized in epicyclic train, there is simple in construction, easily controllable, reliability, stability are high, and the feature such as low cost.
The present invention still has numerous embodiments, all employing equivalents or equivalent transformation and all technical schemes of being formed, within all falling within protection scope of the present invention.
Claims (7)
1. an electromotor irregular rotating speed analog, it is characterised in that: include at the uniform velocity input module, speed change input module and differential planet gear mechanism；Described at the uniform velocity input module includes that the first servomotor for providing fixed rotating speed to input, described first servomotor drive the ring gear against rotation of differential planet gear mechanism；Described speed change input module includes tooth bar, one end of described tooth bar is provided with tooth mouth, described tooth mouth engages with input gear, described input gear is taken turns with the pivoted arm of described differential planet gear mechanism and is connected, the other end of described tooth bar is connected with cam, described cam and the second servomotor connect, and in order to make described tooth bar move back and forth, the sun gear of described differential planet gear mechanism is connected with irregular rotating speed output block.
Electromotor the most according to claim 1 irregular rotating speed analog, it is characterized in that: described differential planet gear mechanism is 2K-H AbaH type differential planet gear mechanism, being provided with the planetary gear of at least one between described sun gear and described gear ring, described planetary gear is connected with described pivoted arm wheel.
Electromotor the most according to claim 2 irregular rotating speed analog, it is characterised in that: the number of teeth of described sun gear is
A, the number of teeth of described gear ring is n*b, and wherein n is constant-speed ratio, and the number of teeth of described planetary gear meets (b-a)/2.
Electromotor the most according to claim 1 irregular rotating speed analog, it is characterised in that: described first servomotor and described second servomotor are connected with the PLC being used for controlling output speed respectively, and described output speed meets formula ω a
=i Hab ω b+ibaH ω H, wherein, the ratio of the angular velocity that i Hab is sun gear and gear ring is taken turns relative to pivoted arm, ω b is the angular velocity of gear ring, and ibaH is sun gear and the pivoted arm wheel ratio relative to the angular velocity of gear ring, and ω H is the angular velocity of pivoted arm wheel.
Electromotor the most according to claim 4 irregular rotating speed analog, it is characterized in that: described first servomotor, described second servomotor and described irregular rotating speed output block are connected with the speed detection sensor being used for detecting its output speed respectively, and described speed detection sensor is connected with described PLC.
6. the method obtaining irregular rotating speed based on the irregular rotating speed analog of the electromotor described in claim 1, it is characterised in that: described first servomotor drives ring gear against rotation, makes described differential planet gear mechanism obtain the input of fixed rotating speed；Described second servomotor makes described tooth bar move back and forth by cam, thus input gear reciprocating rotation described in described rack drives, change rotating speed is passed to described pivoted arm wheel by described input gear, makes described differential planet gear mechanism obtain changing the input of rotating speed；Described differential planet gear mechanism obtains irregular rotating speed after fixed rotating speed and change rotating speed being synthesized, and by sun gear, irregular rotating speed passes to described irregular rotating speed output block.
A kind of method obtaining irregular rotating speed the most according to claim 6, it is characterized in that: control described first servomotor and the output speed of described second servomotor by PLC, and the rate signal collected is fed back to PLC by Negotiation speed detection sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410354260.9A CN104111173B (en) | 2014-07-24 | Electromotor irregular rotating speed analog |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410354260.9A CN104111173B (en) | 2014-07-24 | Electromotor irregular rotating speed analog |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104111173A CN104111173A (en) | 2014-10-22 |
| CN104111173B true CN104111173B (en) | 2016-11-30 |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62211540A (en) * | 1986-03-13 | 1987-09-17 | Meidensha Electric Mfg Co Ltd | Testing device for on-road running simulation |
| US5144834A (en) * | 1989-11-30 | 1992-09-08 | Kabushiki Kaisha Meidensha | System for simulating power plant of automotive vehicle utilizing electrically powered high inertia power plant |
| CN102353534A (en) * | 2011-06-29 | 2012-02-15 | 西安交通大学 | Fault simulation experiment table for step-up drive system of wind-driven generator set |
| CN102477914A (en) * | 2010-11-30 | 2012-05-30 | 联创汽车电子有限公司 | Simulator for rotating speed signals of engine |
| CN103076181A (en) * | 2012-03-26 | 2013-05-01 | 浙江大行科技有限公司 | Phase detecting and controlling device for variable valve timing system of automobile engine |
| CN103558561A (en) * | 2013-10-22 | 2014-02-05 | 中国商用飞机有限责任公司 | Aircraft engine N2 rotation speed simulator |
| CN204008148U (en) * | 2014-07-24 | 2014-12-10 | 苏州工业园区格比机电有限公司 | The irregular rotating speed analogue means of engine |
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62211540A (en) * | 1986-03-13 | 1987-09-17 | Meidensha Electric Mfg Co Ltd | Testing device for on-road running simulation |
| US5144834A (en) * | 1989-11-30 | 1992-09-08 | Kabushiki Kaisha Meidensha | System for simulating power plant of automotive vehicle utilizing electrically powered high inertia power plant |
| CN102477914A (en) * | 2010-11-30 | 2012-05-30 | 联创汽车电子有限公司 | Simulator for rotating speed signals of engine |
| CN102353534A (en) * | 2011-06-29 | 2012-02-15 | 西安交通大学 | Fault simulation experiment table for step-up drive system of wind-driven generator set |
| CN103076181A (en) * | 2012-03-26 | 2013-05-01 | 浙江大行科技有限公司 | Phase detecting and controlling device for variable valve timing system of automobile engine |
| CN103558561A (en) * | 2013-10-22 | 2014-02-05 | 中国商用飞机有限责任公司 | Aircraft engine N2 rotation speed simulator |
| CN204008148U (en) * | 2014-07-24 | 2014-12-10 | 苏州工业园区格比机电有限公司 | The irregular rotating speed analogue means of engine |
Non-Patent Citations (1)
| Title |
|---|
| "高精度发动机转速信号的测量与模拟技术研究";赵俊杰 等;《计算机与数字工程》;20100930;第38卷(第9期);第162-166页 * |
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Effective date of registration: 20170714 Address after: 242300, Anhui, Xuancheng province Ningguo city public benefit Electronic Information Industry Park standardization workshop No. 1 building Patentee after: Anhui 72 Intelligent Technology Co Ltd Address before: Angulinao Industrial Park No. 6 215123 Jiangsu Province, Suzhou City Industrial Park East Road Patentee before: Suzhou Industrial Park GAGE M&E Co., Ltd. |