CN201053923Y - ABS emulation system for automobile brake durability test - Google Patents
ABS emulation system for automobile brake durability test Download PDFInfo
- Publication number
- CN201053923Y CN201053923Y CNU2006200287727U CN200620028772U CN201053923Y CN 201053923 Y CN201053923 Y CN 201053923Y CN U2006200287727 U CNU2006200287727 U CN U2006200287727U CN 200620028772 U CN200620028772 U CN 200620028772U CN 201053923 Y CN201053923 Y CN 201053923Y
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- pressure
- reducing valve
- speed switch
- digital high
- hydraulic
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Abstract
The utility model discloses an ABS simulation system for testing the durability of a vehicle brake. The ABS simulation system consists of an adjusted hydraulic loop, an isolation cylinder, a digital high-speed switch, a swift proportional pressure reducing valve, a hydraulic station and a controller; wherein, the adjusted hydraulic loop, the isolation cylinder, the digital high-speed switch, the swift proportional pressure reducing valve and the hydraulic station are directly connected in series; the digital high-speed switch, the swift proportional pressure reducing valve and the controller are connected in parallel. After the hydraulic station works, the digital high-speed switch is opened and the hydraulic station supplies pressure liquid for the swift proportional pressure reducing valve. When the pressure in the output exit of the swift proportional pressure reducing valve is less than a preset pressure, the liquid flows from a P mouth into an A mouth and the pressure thereof rises; when the pressure of the adjusted hydraulic pipeline reaches the pressure of the period, the digital high-speed switch is closed and the adjusted hydraulic pipeline is in a pressure retaining process. And then, the controller sets the pressure of the swift proportional pressure reducing valve in the next period, securing the output pressure to have high and low. Besides, the rising process of pressure is a staged rising process and the minimum impulse period requires no more than 70ms.
Description
Technical field:
The invention belongs to the specialized equipment of automotive brake durable test stand, relate to specialties such as machinery, hydraulic pressure, electronics.
Background technology:
Along with improving constantly of living standards of the people, automobile occupies more and more important position in common people's life.Traffic safety becomes driver and conductor's Focal Point of Common Attention.Anti-deadlock brake system (Anti-lock Brake System is called for short the ABS system) can not only improve the stationarity of brake, increases travel safety, and its braking distance reduces under the same conditions simultaneously.
Vehicle-mounted ABS system (as Fig. 1) is by speed pickup, pump, valve and four most of compositions of controller, its objective is in the braking automobile process wheel not with the road surface between relative slip.In case wheel lock up (be between the road surface relatively slide), controller is adjusted the internal hydraulic pressure of brake system, makes between brake and wheel to contact apace, unclamp, and contact again, unclamps again, stops up to cancellation braking or vehicle and so forth.
During the detent endurancing, the ABS test is one of wherein more important link.Its objective is the pressure of the hydraulic pressure output system of adjusting the detent main pump according to certain rules, it is low to guarantee that not only pressure has height to have, and the pressure uphill process is the staged uphill process, and its small-pulse effect cycle request is less than 70ms.
Detailed content of the present invention: the purpose of the invention is the pressure regulation device of realizing the small-pulse effect cycle, being used for the automotive brake endurancing.
The design's ABS analogue system as shown in Figure 2 comprises being conditioned hydraulic circuit, isolation cylinder, digital high speed switch, quick proportional pressure-reducing valve, Hydraulic Station and controller.
The annexation of each equipment and pipeline:
The present invention has six major equipments or device, as shown in Figure 2, wherein is conditioned hydraulic circuit 4, isolation cylinder 5, digital high speed switch 6, quick proportional pressure-reducing valve 7, Hydraulic Station 8 direct coupled in series.Digital high speed switch 6, quick proportional pressure-reducing valve 7 are controlling object of controller 9, so controller 9 is in parallel with it.
According to each equipment and pipeline in the system of connections shown in Figure 2, wherein the volume of pipeline equates with the volume of detent hydraulic pressure output system as far as possible.The response time of digital high speed switch 6, the response time of proportional pressure-reducing valve 7 guaranteed on the slave unit that less than 40ms the system pressure adjustment cycle may be less than 70ms fast less than 6ms.Hydraulic Station needs aftercooler, keeps the temperature of liquid in the ABS analogue system to be in normal range all the time, simultaneously in order to guarantee the pressure stability in the hydraulic circuit, need add devices such as accumulator.
The course of work of the present invention:
Principle of work of the present invention is simple, automatically performs during use.The pressure time curve that storage will be set in controller, after system powers on and enters duty, Hydraulic Station is started working, open digital high speed switch, Hydraulic Station provides pressure fluid to quick proportional pressure-reducing valve, when the pressure of the delivery outlet (A mouth) of quick proportional pressure-reducing valve during less than set pressure, liquid carries out the A mouth from its P mouth, and its pressure rises.When the pressure of the pipeline that is conditioned hydraulic pressure reaches the pressure in this cycle, close digital high speed switch, the pipeline that is conditioned hydraulic pressure enters packing state, and this moment, controller was set the pressure that quick proportional pressure-reducing valve enters following one-period.In case end cycle was finished at that time, open digital high speed switch once more, enter the pressure adjustment process of following one-period.
The advantage of the invention:
1) adopts isolation cylinder in ABS analogue system and the pipeline that is conditioned hydraulic pressure, to use different liquid, make the adaptability enhancing of this system.
2) because the response time of digital high speed switch is short, can not only improve the stationarity of brake, increase travel safety, its braking distance reduces under the same conditions simultaneously.
3) of the present utility model simple in structure, automatically perform during use, easy to utilize.
Description of drawings:
Fig. 1 is the vehicle-mounted ABS system schematic of background technology, wherein speed pickup 1, pump 2, valve 3 and controller 4.
Fig. 2 is a structural representation of the present invention, also is Figure of abstract.Wherein be conditioned hydraulic circuit 4, isolation cylinder 5, digital high speed switch 6, quick proportional pressure-reducing valve 7, Hydraulic Station 8 and controller 9.
Embodiment:
Be described in detail specific embodiment below in conjunction with accompanying drawing 2, the pressure time curve that storage will be set in controller 9, after system powers on and enters duty, Hydraulic Station 8 is started working, open digital high speed switch 6,8 pairs of quick proportional pressure-reducing valves 7 of Hydraulic Station provide pressure fluid, when the pressure of the delivery outlet (A mouth) of quick proportional pressure-reducing valve 7 during less than set pressure, liquid enters the A mouth from its P mouth, and its pressure rises.When the pressure of the pipeline that is conditioned hydraulic pressure reaches the pressure in this cycle, close digital high speed switch 6, the pipeline that is conditioned hydraulic pressure enters packing state, and this moment, controller was set the pressure that quick proportional pressure-reducing valve 7 enters following one-period.In case current period finishes, and opens digital high speed switch 6 once more, enters the pressure adjustment process of following one-period.In experimentation, take following measure:
1 since when test hydraulic pressure higher, fluid pressure line mining height intensity, the easy φ 5mm Bandaid pipe of processing do not use hydraulic hose.
0～100% signal response time of 2 digital high speed switch 6 should not surpass 10ms, and the present invention selects the HSV series digit high-speed switch valve of Guizhou red machine machinery company limited for use, and its response time is for being better than 6ms.
0～100% signal response time of 3 quick proportional pressure-reducing valves 7 should not surpass 50ms, and the present invention selects the RZGO series of servo proportioning valve of Italian ATOS company for use, and its response time is for being better than 25ms.
4 because the IO frequency of common PLC is lower, and controller adopts single-chip microcomputer or Industrial Control Computer all can.The first-selected Industrial Control Computer of the present invention is because this computing machine can be finished other control tasks of testing table simultaneously.
Claims (6)
1. the ABS analogue system that is used for the automotive brake endurancing is characterized in that this analogue system comprises to be conditioned hydraulic circuit (4), isolation cylinder (5), digital high speed switch (6), proportional pressure-reducing valve (7), Hydraulic Station (8) and controller (9) fast,
The annexation of each parts:
Be conditioned directly coupled in series of hydraulic circuit (4), isolation cylinder (5), digital high speed switch (6), quick proportional pressure-reducing valve (7), Hydraulic Station (8); Digital high speed switch (6), quick proportional pressure-reducing valve (7) are the controlling object of controller (9), so controller (9) is in parallel with it; Energising back Hydraulic Station (8) is started working, open digital high speed switch (6), Hydraulic Station (8) provides pressure fluid to quick proportional pressure-reducing valve (7), when the pressure of the delivery outlet (A mouth) of quick proportional pressure-reducing valve (7) during less than set pressure, liquid enters the A mouth from its P mouth, and its pressure rises.When the pressure of the pipeline that is conditioned hydraulic pressure reaches the pressure in this cycle, close digital high speed switch (6), the pipeline that is conditioned hydraulic pressure enters packing state, and this moment, controller was set the pressure that quick proportional pressure-reducing valve (7) enters following one-period.
2. according to the described ABS analogue system that is used for the automotive brake endurancing of claim 1, hydraulic pressure is higher when it is characterized in that owing to test, fluid pressure line mining height intensity, the Bandaid pipe of easily processing.
3. according to the described ABS analogue system that is used for the automotive brake endurancing of claim 1, it is characterized in that 0～100% signal response time of digital high speed switch (6) should not surpass 10ms.
4. according to the described ABS analogue system that is used for the automotive brake endurancing of claim 1, it is characterized in that 0～100% signal response time of quick proportional pressure-reducing valve (7) should not surpass 50ms.
5. according to the described ABS analogue system that is used for the automotive brake endurancing of claim 1, it is characterized in that because the IO frequency of common PLC is lower, controller (9) adopts single-chip microcomputer or Industrial Control Computer all can.
6. according to the described ABS analogue system that is used for the automotive brake endurancing of claim 1, it is characterized in that for the temperature that keeps liquid in the ABS analogue system is in normal range all the time, Hydraulic Station needs aftercooler; In order to guarantee the pressure stability in the hydraulic circuit, need add accumulator apparatus simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200287727U CN201053923Y (en) | 2006-05-18 | 2006-05-18 | ABS emulation system for automobile brake durability test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200287727U CN201053923Y (en) | 2006-05-18 | 2006-05-18 | ABS emulation system for automobile brake durability test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201053923Y true CN201053923Y (en) | 2008-04-30 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006200287727U Expired - Fee Related CN201053923Y (en) | 2006-05-18 | 2006-05-18 | ABS emulation system for automobile brake durability test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201053923Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107655698A (en) * | 2017-08-30 | 2018-02-02 | 中国煤炭科工集团太原研究院有限公司 | A kind of hydraulic power unit for the experiment of explosion-proof wet brake |
| CN111879527A (en) * | 2020-08-04 | 2020-11-03 | 清华大学 | System and method for testing durability of hydraulic control unit in automobile braking system |
-
2006
- 2006-05-18 CN CNU2006200287727U patent/CN201053923Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107655698A (en) * | 2017-08-30 | 2018-02-02 | 中国煤炭科工集团太原研究院有限公司 | A kind of hydraulic power unit for the experiment of explosion-proof wet brake |
| CN111879527A (en) * | 2020-08-04 | 2020-11-03 | 清华大学 | System and method for testing durability of hydraulic control unit in automobile braking system |
| CN111879527B (en) * | 2020-08-04 | 2022-04-29 | 清华大学 | System and method for testing durability of hydraulic control unit in automobile braking system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080430 |