CN103900827A - Electric-drive simulation oil pressure brake device - Google Patents
Electric-drive simulation oil pressure brake device Download PDFInfo
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- CN103900827A CN103900827A CN201410131674.5A CN201410131674A CN103900827A CN 103900827 A CN103900827 A CN 103900827A CN 201410131674 A CN201410131674 A CN 201410131674A CN 103900827 A CN103900827 A CN 103900827A
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- push rod
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Abstract
Disclosed is an electric-drive simulation oil pressure brake device. A propelling rod of a brake pump assembly is pushed by an electric pushing rod device which is driven by a pushing motor, an output shaft of the pushing motor drives a screw rod connected with the output shaft to rotate, the front end of the screw rod is embedded into a threaded-connection internal screw pushing rod, the internal screw pushing rod is connected with the propelling rod directly or through a propelling output end, and the propelling rod is pushed to do the linear motion; a plurality of position sensors are spirally and evenly embedded in a thread pair formed by the internal screw pushing rod and the screw rod. According to the device, a traditional hydraulic pushing rod which is used as the mode for controlling the brake thrust is abandoned, the size of a brake test device is greatly reduced, the cost is greatly reduced, the different brake motions and processes are conveniently and precisely controlled, and especially through the mode that the position sensors are embedded in a spiral feeding device of the electric pushing rod, the actual motion process and the effect of the electric pushing rod are precisely controlled and fed back.
Description
Technical field
The present invention relates to automobile brake system analogue means, is that a kind of electricity promotes simulation oil brake specifically.
Background technology
Automobile brake system is the critical component of automotive safety, and in automobile brake test in the past, the pressurization of brake fluid adopts hydraulic cylinder and cylinder to promote pressurization, and volume is large, cost is high, controls inconvenient.Be unfavorable for the repetition test of automobile brake system and the testing research to all parts in automobile brake system.
Simultaneously, also there is a position control to skidding distance and the key technical problem of detection in the test unit of brake system, traditional use hydraulic control mode, not only bulky, and be only convenient to carry out open loop control from controlling party, position feedback precision is very low, cause being difficult to the actual promotion state of Measurement accuracy in practical operation, being subject to the Different Effects that the interference of various factors and the different conditions of physical construction cause is difficult to assert, and the state of these parts is the keys to brake gear bulk testing state and effect, to test findings and brake flange, oil pressure, the performance at each position such as vacuum servo is important test condition.
Summary of the invention
Technical matters to be solved by this invention is to address the above problem, and provides a kind of electricity that can accurately obtain actual brake push rod state to promote simulation oil brake.
Described electricity promotes simulation oil brake, comprise the vacuum pump, surge tank, electric contact pressure vacuum gauge, the vacuum booster that connect successively, and the oil gear being connected with the efferent of described vacuum booster, be connected brake pump assembly with the input part 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 box, the output shaft of pushing motor drives the screw rod rotation connecting, described screw front end embeds the interior spiral shell push rod being threaded with it, described interior spiral shell push rod is direct or connect described distance rod by thrust output terminal, makes described distance rod do rectilinear motion; In the thread groove inwall of described interior spiral shell push rod, spiral fashion is evenly embedded with multiple position transducers.
A kind of embodiment is, described position transducer is embedded in the thread groove of interior spiral shell push rod, in described interior spiral shell push rod, be axially arranged with many wire casings, the output lead of described position transducer is concentrated and is drawn by described wire casing, concentrate the transducing signal input terminal that is connected to control box multicore by shielded cable, be connected to data conversion module or the processor interface in control box by transducing signal input terminal.
An embodiment for position transducer, described position transducer is reflective photoelectric sensor.
Another kind of embodiment is that the sensing element that the magnet steel that described position transducer is buried underground by described screw front end one side and described interior spiral shell push rod inwall are buried underground forms; In described interior spiral shell push rod, be axially arranged with many wire casings, the output lead of described position transducer is concentrated and is drawn by described wire casing, concentrate the transducing signal input terminal that is connected to control box multicore by shielded cable, be connected to data conversion module or the processor interface in control box by transducing signal input terminal.
The embodiment of above-mentioned position transducer, sensing element is tongue tube or Hall element
Described oil gear connects an oil hydraulic cylinder, and input, the delivery outlet of described oil gear are connected with output, the input interface of described oil hydraulic cylinder respectively; The oil pressure output terminal of described oil hydraulic cylinder is provided with pressure unit, and the output terminal of described pressure unit is electrically connected with the input interface of described controller.。
A kind of control linkage scheme of pure hardware is, in described control box, be provided with to control the given module of pressure, pressure conditioning module and PWM driver module under data conversion module that outbound course is electrically connected in turn, position conditioning module, desired location, another input end of described position conditioning module is connected with the output terminal of the given module in position;
The output terminal of described PWM driver module is electrically connected 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 unit, and the output terminal of described pressure unit is electrically connected with another input end of described pressure conditioning module;
The output terminal of multiple described position transducers is connected respectively to the corresponding input end of described data conversion module, for the position sensor switches signal of diverse location being arranged to the data-signal that is converted to correspondence position value.
As prioritization scheme, described position transducer is reflective photoelectric sensor, and the output terminal of described pressure unit connects measurement instrument.
The present invention has abandoned traditional hydraulic push rod as the mode of controlling brake thrust, make that wheels-locked testing device volume greatly reduces, cost significantly reduces, and be convenient to accurately control different brake and process, especially use the mode of burial place sensor in the sctew feeder of electric pushrod, make the actual act process of electric pushrod and the effect can precisely controlled and feedback.
If use scrambler mode, although also can obtain the run-length data of degree of precision, but the impact of the factors such as scrambler can be subject to on-the-spotly shaking, skids under the state of transmission, actual test, transfer coefficient, in fact the data that draw remain the output data after control end output effect gives a discount, instead of actual electric pushrod feeding state, be not the data result directly obtaining from the change in location of push rod, thereby its feedback of status data there is no essential meaning.And the present invention program has adopted the direct feedback position data of physical location from push rod, this packet has contained the mechanical property of brake part and the integral result of installation capability, can obtain the most truly, objectively the result being obtained by the actual advanced state of push rod, and draw thus corresponding brake flange, vacuum servo, oil pressure parts under this push rod state in real time, real result, the transmission performance that also can detect thus electric pushrod itself, has great significance for the process of the test of automobile braking device.
Brief description of the drawings
Fig. 1 is one-piece construction schematic diagram of the present invention,
Fig. 2 is that the present invention's electricity promotes control circuit structured flowchart,
Fig. 3 is electric pushing structure schematic diagram,
Fig. 4 is electric pushrod longitudinal profile schematic diagram.
In figure: 1-vacuum pump, 2-electric contact pressure vacuum gauge, 3-surge tank, 4-oil gear, 5-pressure unit, 6-oil hydraulic cylinder, 7-vacuum booster, 8-brake pump assembly, 9-control box, 10-electric pushrod device, 11-distance rod, 12-pressure conditioning module, 13-PWM driver module, 14-measurement instrument, the given module of 15-pressure, 18-thrust output terminal, 19-pushing motor, 20-screw rod, 21-position transducer, 22-wire casing, 23-interior spiral shell push rod, 24-position conditioning module, 25-data conversion module, the given module in 26-position.
Embodiment
Below in conjunction with drawings and Examples, the present invention is further described: as shown in fig. 1, described electricity promotes simulation oil brake, for emulation automobile brake system, can replace repetition test and detect the performance of all parts in brake system.This electricity promotes simulation oil brake and comprises the vacuum pump 1, surge tank 3, electric contact pressure vacuum gauge 2, the vacuum booster 7 that connect successively, and the oil gear 4 being connected with the efferent of described vacuum booster 7, be connected brake pump assembly 8 with the input part of described vacuum booster 7, described oil gear 4 connects an oil hydraulic cylinder 6, and input, the delivery outlet of described oil gear 4 are connected with output, the input interface of described oil hydraulic cylinder 6 respectively; The oil pressure output terminal of described oil hydraulic cylinder 6 is provided with pressure unit 5, and the output terminal of described pressure unit 5 is electrically connected with the input interface of described controller 9.
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 box 9, the output shaft of pushing motor 19 drives the screw rod 20 connecting to rotate, described screw rod 20 front ends embed the interior spiral shell push rod 23 being threaded, and by described interior spiral shell push rod 23 directly or connect described distance rod 11 by thrust output terminal 18, promote described distance rod and do rectilinear motion; In the thread groove inwall of described interior spiral shell push rod 23, spiral fashion is evenly embedded with multiple position transducers 21.For the ease of controlling, pushing motor is direct current generator, and the control voltage that accurately changes pushing motor just can change the rotating speed of screw rod immediately, and then changes the fltting speed of interior spiral shell push rod.Pushing motor optionally can carry out connecting screw rod 20 by shaft coupling.
Taking reflective photoelectric sensor as example, as Fig. 4, in described interior spiral shell push rod 23, be axially arranged with many wire casings 22, the output lead of described position transducer 21 is concentrated and is drawn by described wire casing 22, concentrate the transducing signal input end that is connected to control box 9 multicores by shielded cable, be connected to data conversion module 25 or the processor interface in control box by transducing signal input end.
The position transducer being embedded in the groove of screw thread, in the time of screw rod 20 screw propulsion, every through a position transducer, this position transducer is beamed back screw rod arriving signal immediately, and in departure process, does not keep this signal at screw rod.In each spiralization cycle, can bury nearly 16 or multiposition sensor more underground, make the air line distance of each pitch, positional precision can improve more than 16 times, effectively avoid linear position to detect installation accuracy and made the high requirement of precision, and significantly reduced cost of manufacture carrying the high-precision while therefore, especially, arrange that sophisticated sensor can face outward because the vibrations in equipment running process, the factor such as rock and unstable, the inaccurate problem of measurement that causes at push rod, let alone accuracy requirement.
A kind of control linkage scheme of pure hardware is, as Fig. 2, in described control box 9, be provided with to control the given module 15 of pressure, pressure conditioning module 12 and PWM driver module 13 under data conversion module 25 that outbound course is electrically connected in turn, position conditioning module 24, desired location, the output terminal of described PWM driver module 13 is electrically connected with the drive end of described pushing motor 19, and described pushing motor 19 is direct current generator; Another input end of described position conditioning module 24 is connected with the output terminal of the given module 26 in position; The output terminal of multiple described position transducers 21 is connected respectively to the corresponding input end of described data conversion module 25, for the position sensor switches signal of diverse location being arranged to the data-signal that is converted to correspondence position value.Data conversion module can be overlapped out by simple logical circuit, for example be scaled position representation signal according to system change-over circuit by the signal intensity of position transducer in each cycle, output represents the data of actual position value, therefore the output of data conversion module 25 is just equivalent to the particular location that screw rod advances or retreats, nursing one's health with the more laggard line position of the given module 26 in position, correction position error, and according to the given corresponding oil pressure Output pressure of current location.The oil pressure actuated output pipe of described oil gear 4 is provided with pressure unit 5, and the output terminal of described pressure unit 5 is electrically connected with another input end of described pressure conditioning module 12; By the observed pressure of setting pressure and pressure unit output feedback relatively and carry out after pressure conditioning module 12, produce current motor speed voltage.The voltage that represents rotating speed is exported to pushing motor 19 after the modulation of PWM module, thereby produce actual thrust.Whole control procedure can be according to the different braking state of brake process numerical simulation of setting, thereby accurately test the performance of the overall brake device each several part under different states, be collected in the test data under corresponding speed, pressure, tested product is made to comprehensive assessment, and the each several part of this brake gear all can replace with tested product and carry out simulation test.
Above process is the simulation to brake process that utilizes hardware to complete, certainly, if whole test process utilizes computing machine to carry out real-time data collection, real-time analysis also provides result, to make experimentation more clear and definite concrete, be conducive to draw the test data of each several part at a test process simultaneously, and draw result of calculation.
The present invention program creatively realizes oil pressure progradation with the electronic way of propelling, more be convenient to control flexibly and sampling, position-detection sensor is placed in the inside of screw thread transmission, that has avoided that exterior vibration causes is unstable, and the position transducer that spiral is buried underground is more beneficial to low cost and technological requirement and obtains high-precision test data.
Claims (8)
1. an electricity promotes simulation oil brake, comprise the vacuum pump (1), surge tank (3), electric contact pressure vacuum gauge (2), the vacuum booster (7) that connect successively, and the oil gear (4) being connected with the efferent of described vacuum booster (7), the brake pump assembly (8) being connected with the input part 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 box (9), the output shaft of pushing motor (19) drives screw rod (20) rotation connecting, described screw rod (20) front end embeds the interior spiral shell push rod (23) being threaded with it, described interior spiral shell push rod (23) is direct or connect described distance rod (11) by thrust output terminal (18), makes described distance rod do rectilinear motion; Described interior spiral shell push rod (23) is evenly embedded with multiple position transducers (21) with the screw thread pair internal helicoid shape that screw rod (20) forms.
2. electricity according to claim 1 promotes simulation oil brake, it is characterized in that: described position transducer buries (21) and is located in the thread groove of interior spiral shell push rod (23), in described interior spiral shell push rod (23), be axially arranged with many wire casings (22), the output lead of described position transducer (21) is concentrated and is drawn by described wire casing (22), concentrate the transducing signal input terminal that is connected to control box (9) multicore by shielded cable, be connected to data conversion module (25) or the processor interface in control box by transducing signal input terminal.
3. electricity according to claim 2 promotes simulation oil brake, it is characterized in that: described position transducer (21) is reflective photoelectric sensor.
4. electricity according to claim 1 promotes simulation oil brake, it is characterized in that: the sensing element that the magnet steel that described position transducer (21) is buried underground by described screw rod (20) front end one side and described interior spiral shell push rod (23) inwall are buried underground forms; In described interior spiral shell push rod (23), be axially arranged with many wire casings (22), the output lead of described position transducer (21) is concentrated and is drawn by described wire casing (22), concentrate the transducing signal input terminal that is connected to control box (9) multicore by shielded cable, be connected to data conversion module (25) or the processor interface in control box by transducing signal input terminal.
5. electricity according to claim 4 promotes simulation oil brake, it is characterized in that: described sensing element is tongue tube or Hall element.
6. 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 input, the delivery outlet of described oil gear (4) are connected with output, the input interface of described oil hydraulic cylinder (6) respectively; The oil pressure output terminal of described oil hydraulic cylinder (6) is provided with pressure unit (5), and the output terminal of described pressure unit (5) is electrically connected with the input interface of described controller (9).
7. electricity according to claim 1 promotes simulation oil brake, it is characterized in that: in described control box (9), be provided with to control the given module of pressure (15), pressure conditioning module (12) and PWM driver module (13) under data conversion module (25) that outbound course is electrically connected in turn, position conditioning module (24), desired location, another input end of described position conditioning module (24) is connected with the output terminal of the given module in position (26);
The output terminal of described PWM driver module (13) is electrically connected 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 unit (5), and the output terminal of described pressure unit (5) is electrically connected with another input end of described pressure conditioning module (12);
The output terminal of multiple described position transducers (21) is connected respectively to the corresponding input end of described data conversion module (25), for the position sensor switches signal of diverse location being arranged to the data-signal that is converted to correspondence position value.
8. electricity according to claim 7 promotes simulation oil brake, it is characterized in that: the output terminal of described pressure unit (5) connects measurement instrument (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410131674.5A CN103900827B (en) | 2014-04-02 | 2014-04-02 | A kind of electricity promotes simulation oil brake |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410131674.5A CN103900827B (en) | 2014-04-02 | 2014-04-02 | A kind of electricity promotes simulation oil brake |
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| CN103900827A true CN103900827A (en) | 2014-07-02 |
| CN103900827B CN103900827B (en) | 2016-06-15 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105606369A (en) * | 2015-09-08 | 2016-05-25 | 宁波拓普智能刹车系统有限公司 | Automobile electric and mechanical booster performance test bench |
| CN108801651A (en) * | 2018-06-11 | 2018-11-13 | 浙江国自机器人技术有限公司 | A kind of drum brake method for testing performance, system and the relevant apparatus of drum type braking device |
| CN108791252A (en) * | 2018-06-11 | 2018-11-13 | 浙江国自机器人技术有限公司 | A kind of brake control method of drum type braking device, system and relevant apparatus |
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| 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 |
| 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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2014
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Patent Citations (7)
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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 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105606369A (en) * | 2015-09-08 | 2016-05-25 | 宁波拓普智能刹车系统有限公司 | Automobile electric and mechanical booster performance test bench |
| 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 |
| CN108801651A (en) * | 2018-06-11 | 2018-11-13 | 浙江国自机器人技术有限公司 | A kind of drum brake method for testing performance, system and the relevant apparatus of drum type braking device |
| CN108791252A (en) * | 2018-06-11 | 2018-11-13 | 浙江国自机器人技术有限公司 | A kind of brake control method of drum type braking device, system and relevant apparatus |
| 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 |
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