CN103900827B - A kind of electricity promotes simulation oil brake - Google Patents
A kind of electricity promotes simulation oil brake Download PDFInfo
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- CN103900827B CN103900827B CN201410131674.5A CN201410131674A CN103900827B CN 103900827 B CN103900827 B CN 103900827B CN 201410131674 A CN201410131674 A CN 201410131674A CN 103900827 B CN103900827 B CN 103900827B
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- push rod
- brake
- spiral shell
- outfan
- oil
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Abstract
A kind of electricity promotes simulation oil brake, the distance rod of brake pump assembly is promoted by electric pushrod device, electric pushrod device drives with pushing motor, the output shaft of pushing motor drives the screw rod connected to rotate, described screw front end embeds threaded interior spiral shell push rod, connected described distance rod by interior spiral shell push rod directly or by thrust outfan, promote described distance rod to do rectilinear motion; The screw thread pair intra helical that described interior spiral shell push rod and screw rod are formed uniformly is embedded with multiple position sensor. The present invention has abandoned traditional hydraulic push rod as the mode controlling brake thrust, wheels-locked testing device volume is greatly reduced, cost is greatly reduced, and be easy to accurately control different brakes and process, the mode being particularly used in the sctew feeder of electric pushrod burial place sensor so that the actual act process of electric pushrod and effect can precisely controlled and feedbacks.
Description
Technical field
The present invention relates to automobile brake system analog, specifically a kind of electricity promotes simulation oil brake.
Background technology
Automobile brake system is the critical component of automotive safety, and in conventional automobile brake test, the pressurization of brake fluid adopts hydraulic cylinder and cylinder to promote pressurization, and volume is big, cost is high, controls inconvenience. It is unfavorable for the repetition test of automobile brake system and to the testing research of all parts in automobile brake system.
Simultaneously, the assay device of brake system there is also the key technical problem of a position control to skidding distance and detection, traditional use hydraulic control mode, not only bulky, and be only easy to carry out opened loop control from controlling party, position feedback accuracy is very low, cause being difficult to accurately measure actual promotion state in practical operation, the Different Effects that the different conditions of the interference and frame for movement that are subject to various factors causes is difficult to assert, and the state of these parts is the key to brake gear bulk testing state and effect, to result of the test and brake disc, oil pressure, the performance at each position such as vacuum servo is important experimental condition.
Summary of the invention
The technical problem to be solved is to solve the problems referred to above, it is provided that a kind of electricity that can accurately obtain actual brake push rod state promotes simulation oil brake.
Described electricity promotes simulation oil brake, including the vacuum pump being sequentially connected with, surge tank, electric contact pressure vacuum gauge, vacuum booster, and the oil gear being connected with the output portion of described vacuum booster, it is connected brake pump assembly with the input portion of described vacuum booster, it is characterized in that:
The distance rod of described brake pump assembly is promoted by electric pushrod device, described electric pushrod device is driven by pushing motor, the power supply line of pushing motor connects control chamber, the output shaft of pushing motor drives the screw rod connected to rotate, described screw front end embeds interior spiral shell push rod threaded with it, described interior spiral shell push rod connects described distance rod directly or by thrust outfan, makes described distance rod do rectilinear motion; In the thread groove inwall of described interior spiral shell push rod, helical form is uniformly embedded with multiple position sensor.
A kind of embodiment is, described position sensor is embedded in the thread groove of interior spiral shell push rod, it is axially arranged with a plurality of wire casing in described interior spiral shell push rod, the output lead of described position sensor is concentrated by described wire casing and is drawn, concentrated the transducing signal input terminal being connected to control chamber multicore by shielded cable, transducing signal input terminal be connected to the data conversion module in control chamber or processor interface.
The embodiment of a kind of position sensor, described position sensor is reflective photoelectric sensor.
Another kind of embodiment is, magnet steel that described position sensor is buried underground by described screw front end side and the sensing element that described interior spiral shell push rod inwall is buried underground form; It is axially arranged with a plurality of wire casing in described interior spiral shell push rod, the output lead of described position sensor is concentrated by described wire casing and is drawn, concentrated the transducing signal input terminal being connected to control chamber multicore by shielded cable, transducing signal input terminal be connected to the data conversion module in control chamber or processor interface.
The embodiment of above-mentioned position sensor, sensing element is tongue tube or Hall element.
Described oil gear connects an oil hydraulic cylinder, and the input of described oil gear, delivery outlet are connected with the output of described oil hydraulic cylinder, input interface respectively; The oil pressure outfan of described oil hydraulic cylinder is provided with pressure transmitter, and the outfan of described pressure transmitter electrically connects with the input interface of described controller. .
The control connection scheme of a kind of pure hardware is, being provided with to control the given module of pressure under data conversion module that outbound course sequentially electrically connects, position conditioning module, setting position, pressure conditioning module and PWM in described control chamber and drive module, the outfan that another input of described position conditioning module gives module with position is connected;
Described PWM drives the outfan of module to electrically connect with the drive end of described pushing motor, and described pushing motor is direct current generator; The oil pressure actuated output pipe of described oil gear is provided with pressure transmitter, and the outfan of described pressure transmitter electrically connects with another input of described pressure conditioning module;
The outfan of multiple described position sensors is connected respectively to the corresponding input of described data conversion module, for the position sensor switches signal of diverse location arranges the data signal being converted to correspondence position value.
As prioritization scheme, described position sensor is reflective photoelectric sensor, and the outfan of described pressure transmitter connects measures instrument.
The present invention has abandoned traditional hydraulic push rod as the mode controlling brake thrust, wheels-locked testing device volume is greatly reduced, cost is greatly reduced, and be easy to accurately control different brakes and process, the mode being particularly used in the sctew feeder of electric pushrod burial place sensor so that the actual act process of electric pushrod and effect can precisely controlled and feedbacks.
If use coder mode, although the run-length data of degree of precision can also be obtained, but encoder can be subject to the impact of the factors such as on-the-spot vibrations, skidding, carry-over factor when transmission, actual test, the data drawn actually remain and control the output data after end output effect gives a discount, rather than the electric pushrod feeding state of reality, it not the data result that directly obtains of the change in location from push rod, thus its feedback of status data there is no essential meaning. And the present invention program have employed from the direct feedback position data of the physical location of push rod, these data contain the mechanical performance of brake part and the whole result of installation capability, the result obtained by the actual advanced state of push rod can be obtained the most truly, objectively, and thus draw corresponding brake disc, vacuum servo, the oil pressure parts result real-time, real under this push rod state, can also thus detecting the transmission performance of electric pushrod itself, the process of the test for automobile braking device has great significance.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present invention,
Fig. 2 is that electricity of the present invention promotes control circuit structured flowchart,
Fig. 3 is electricity pushing structure schematic diagram,
Fig. 4 is electric pushrod vertical section schematic diagram.
In figure: 1 vacuum pump, 2 electric contact pressure vacuum gauges, 3 surge tanks, 4 oil gears, 5 pressure transmitters, 6 oil hydraulic cylinders, 7 vacuum boosters, 8 brake pump assemblies, 9 control chambers, 10 electric pushrod devices, 11 distance rods, 12 pressure conditioning module, 13 PWM drive module, 14 measure instrument, and 15 pressure give module, 18 thrust outfans, 19 pushing motors, 20 screw rods, 21 position sensors, 22 wire casings, spiral shell push rod in 23,24 position conditioning module, 25 data conversion modules, 26 positions give module.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is further described: as shown in fig. 1, and described electricity promotes simulation oil brake, is used for emulating automobile brake system, it is possible to replaces repetition test detection all parts performance in brake system. This electricity promotes vacuum pump 1 that simulation oil brake includes being sequentially connected with, surge tank 3, electric contact pressure vacuum gauge 2, vacuum booster 7, and the oil gear 4 being connected with the output portion of described vacuum booster 7, it is connected brake pump assembly 8 with the input portion of described vacuum booster 7, described oil gear 4 connects an oil hydraulic cylinder 6, and the input of described oil gear 4, delivery outlet are connected with the output of described oil hydraulic cylinder 6, input interface respectively; The oil pressure outfan of described oil hydraulic cylinder 6 is provided with pressure transmitter 5, and the outfan of described pressure transmitter 5 electrically connects with the input interface of described controller 9.
Such as Fig. 3, the distance rod 11 of described brake pump assembly 8 is promoted by electric pushrod device 10, described electric pushrod device 10 drives with pushing motor 19, the power supply line of pushing motor 19 connects control chamber 9, the output shaft of pushing motor 19 drives the screw rod 20 connected to rotate, described screw rod 20 front end embeds threaded interior spiral shell push rod 23, described interior spiral shell push rod 23 connect described distance rod 11 directly or by thrust outfan 18, promote described distance rod to do rectilinear motion; In the thread groove inwall of described interior spiral shell push rod 23, helical form is uniformly embedded with multiple position sensor 21. For the ease of controlling, pushing motor is direct current generator, and the control voltage accurately changing pushing motor just can change the rotating speed of screw rod and then the fltting speed of spiral shell push rod in change immediately. Pushing motor optionally can connect screw rod 20 by shaft coupling.
For reflective photoelectric sensor, such as Fig. 4, it is axially arranged with a plurality of wire casing 22 in described interior spiral shell push rod 23, the output lead of described position sensor 21 is concentrated by described wire casing 22 and is drawn, concentrated the transducing signal input being connected to control chamber 9 multicore by shielded cable, transducing signal input be connected to the data conversion module 25 in control chamber or processor interface.
The position sensor being embedded in the groove of screw thread, when screw rod 20 screw propulsion, often through a position sensor, then screw rod arriving signal beamed back immediately by this position sensor, and keeps this signal in the non-departure process of screw rod. Can bury underground up to 16 in each spiralization cycle or more position sensor, make the air line distance of each pitch, positional precision can improve more than 16 times, effectively prevent linear position detection installation accuracy and make the requirement that precision is high, therefore the high-precision cost of manufacture that simultaneously significantly reduces is being put forward, especially, outside push rod, arrange sophisticated sensor can face because the vibrations in equipment running process, the factor such as rocking and the measurement problem unstable, inaccurate that causes, let alone required precision.
The control connection scheme of a kind of pure hardware is, such as Fig. 2, it is provided with to control the given module 15 of pressure under data conversion module 25 that outbound course sequentially electrically connects, position conditioning module 24, setting position, pressure conditioning module 12 and PWM in described control chamber 9 and drives module 13, described PWM drives the outfan of module 13 to electrically connect with the drive end of described pushing motor 19, and described pushing motor 19 is direct current generator;Another input of described position conditioning module 24 is connected with the outfan of the given module 26 in position; The outfan of multiple described position sensors 21 is connected respectively to the corresponding input of described data conversion module 25, for the position sensor switches signal of diverse location arranges the data signal being converted to correspondence position value. Data conversion module can be overlapped out by simple logic circuit, such as it is scaled position representation signal according to system change-over circuit by the signal intensity of position sensor in each cycle, output represents the data of actual position value, therefore the output of data conversion module 25 is equivalent to the particular location that screw rod advances or retreats, the conditioning of laggard line position is being compared with the given module 26 in position, correction position error, and give the output of corresponding oil pressure pressure according to current location. The oil pressure actuated output pipe of described oil gear 4 is provided with pressure transmitter 5, and the outfan of described pressure transmitter 5 electrically connects with another input of described pressure conditioning module 12; After being compared and carry out pressure conditioning module 12 by the observed pressure of setting pressure with pressure transmitter output feedack, produce current motor rotating speed voltage. Would indicate that the voltage of rotating speed exports to pushing motor 19 after PWM module is modulated, thus producing actual thrust. Whole control process can according to the different braking state of brake process numerical simulation set, thus the performance of the overall brake device each several part accurately tested under different states, collect the test data under corresponding speed, pressure, tested product is made comprehensive assessment, and each several part of this brake gear all could alternatively be tested product and is simulated test.
Above procedure is the simulation to brake process utilizing hardware to complete, certainly, whole test process carries out real-time data collection if, with computer, analyze in real time and provide result, experimentation will be made definitely concrete, be conducive to drawing at a test process test data of each several part simultaneously, and draw result of calculation.
Oil pressure progradation is creatively realized by the present invention program with the electronic way of propelling, easily facilitate and control flexibly and sampling, position-detection sensor is placed in the inside that screw-driven is secondary, avoiding the instability that exterior vibration causes, the position sensor that spiral is buried underground is more favorable for obtaining high-precision test data with low cost and technological requirement.
Claims (7)
1. an electricity promotes simulation oil brake, including the vacuum pump (1) being sequentially connected with, surge tank (3), electric contact pressure vacuum gauge (2), vacuum booster (7), and the oil gear (4) being connected with the output portion of described vacuum booster (7), the brake pump assembly (8) being connected with the input portion of described vacuum booster (7), is characterized in that:
The distance rod (11) of described brake pump assembly (8) is promoted by electric pushrod device (10), described electric pushrod device (10) is driven by pushing motor (19), the power supply line of pushing motor (19) connects control chamber (9), the output shaft of pushing motor (19) drives the screw rod (20) connected to rotate, described screw rod (20) front end embeds interior spiral shell push rod (23) threaded with it, described interior spiral shell push rod (23) connects described distance rod (11) directly or by thrust outfan (18), described distance rod is made to do rectilinear motion, the screw thread pair intra helical that described interior spiral shell push rod (23) and screw rod (20) are formed uniformly is embedded with multiple position sensor (21),
Described position sensor (21) is embedded in the thread groove of interior spiral shell push rod (23), it is axially arranged with a plurality of wire casing (22) in described interior spiral shell push rod (23), the output lead of described position sensor (21) is concentrated by described wire casing (22) and is drawn, concentrated the transducing signal input terminal being connected to control chamber (9) multicore by shielded cable, transducing signal input terminal be connected to the data conversion module (25) in control chamber or processor interface.
2. electricity according to claim 1 promotes simulation oil brake, it is characterized in that: described position sensor (21) is reflective photoelectric sensor.
3. electricity according to claim 1 promotes simulation oil brake, it is characterized in that: magnet steel that described position sensor (21) is buried underground by described screw rod (20) side, front end and the sensing element that described interior spiral shell push rod (23) inwall is buried underground form; It is axially arranged with a plurality of wire casing (22) in described interior spiral shell push rod (23), the output lead of described position sensor (21) is concentrated by described wire casing (22) and is drawn, concentrated the transducing signal input terminal being connected to control chamber (9) multicore by shielded cable, transducing signal input terminal be connected to the data conversion module (25) in control chamber or processor interface.
4. electricity according to claim 3 promotes simulation oil brake, it is characterized in that: described sensing element is tongue tube or Hall element.
5. electricity according to claim 1 promotes simulation oil brake, it is characterized in that: described oil gear (4) connects an oil hydraulic cylinder (6), and the input of described oil gear (4), delivery outlet are connected with the output of described oil hydraulic cylinder (6), input interface respectively; The oil pressure outfan of described oil hydraulic cylinder (6) is provided with pressure transmitter (5), and the outfan of described pressure transmitter (5) electrically connects with the input interface of described controller (9).
6. electricity according to claim 1 promotes simulation oil brake, it is characterized in that: being provided with to control the given module (15) of pressure under data conversion module (25) that outbound course sequentially electrically connects, position conditioning module (24), setting position, pressure conditioning module (12) and PWM in described control chamber (9) and drive module (13), the outfan that another input of described position conditioning module (24) gives module (26) with position is connected;
Described PWM drives the outfan of module (13) to electrically connect with the drive end of described pushing motor (19), and described pushing motor (19) is direct current generator; The oil pressure actuated output pipe of described oil gear (4) is provided with pressure transmitter (5), and the outfan of described pressure transmitter (5) electrically connects with another input of described pressure conditioning module (12);
The outfan of multiple described position sensors (21) is connected respectively to the corresponding input of described data conversion module (25), for the position sensor switches signal of diverse location arranges the data signal being converted to correspondence position value.
7. electricity according to claim 6 promotes simulation oil brake, it is characterized in that: the outfan of described pressure transmitter (5) connects measures instrument (14).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410131674.5A CN103900827B (en) | 2014-04-02 | 2014-04-02 | A kind of electricity promotes simulation oil brake |
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| CN201410131674.5A CN103900827B (en) | 2014-04-02 | 2014-04-02 | A kind of electricity promotes simulation oil brake |
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| CN103900827A CN103900827A (en) | 2014-07-02 |
| CN103900827B true CN103900827B (en) | 2016-06-15 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105606369B (en) * | 2015-09-08 | 2018-05-11 | 宁波拓普智能刹车系统有限公司 | A kind of motorcar electric machinery booster is performance test bed |
| CN108791252B (en) * | 2018-06-11 | 2020-03-17 | 浙江国自机器人技术有限公司 | Brake control method and system of drum brake device and related device |
| CN108801651B (en) * | 2018-06-11 | 2020-05-01 | 浙江国自机器人技术有限公司 | Drum brake performance detection method and system of drum brake device and related device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN203772551U (en) * | 2014-04-02 | 2014-08-13 | 武汉东测科技有限责任公司 | An electric-propelling simulation oil pressure brake device |
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| DE3203400A1 (en) * | 1982-02-02 | 1983-08-11 | Alfred Dipl.-Ing.(FH) 7257 Ditzingen Wieland | Vacuum system |
| CN2111899U (en) * | 1992-01-31 | 1992-08-05 | 彭新录 | Automatic braking pump |
| KR100791632B1 (en) * | 2006-07-18 | 2008-01-04 | 고려대학교 산학협력단 | Apparatus for testing performance of brake pad of car |
| KR20090090452A (en) * | 2008-02-21 | 2009-08-26 | 주식회사 만도 | Hydraulic unit of electronic control brake system having simulation function |
| CN203337254U (en) * | 2013-07-15 | 2013-12-11 | 北京市电加工研究所 | Measurement system for corner freedom degree frequency-response function of mechanical structural member |
| CN103496365A (en) * | 2013-10-25 | 2014-01-08 | 北京汽车股份有限公司 | Hydraulic brake master pump assisted by electric power |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN203772551U (en) * | 2014-04-02 | 2014-08-13 | 武汉东测科技有限责任公司 | An electric-propelling simulation oil pressure brake device |
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