CN101032959A - Vehicle braking apparatus - Google Patents
Vehicle braking apparatus Download PDFInfo
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- CN101032959A CN101032959A CN 200710086810 CN200710086810A CN101032959A CN 101032959 A CN101032959 A CN 101032959A CN 200710086810 CN200710086810 CN 200710086810 CN 200710086810 A CN200710086810 A CN 200710086810A CN 101032959 A CN101032959 A CN 101032959A
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Abstract
A vehicle braking apparatus is provided with a brake operating element (1) that is operated by a driver, and an actuator that generates a braking force in accordance with a braking operation of the brake operating element. A controller (9) is operatively arranged to control the actuator such that an increase in a rate of change of the braking force with respect to the braking operation by the driver is suppressed upon determining that vehicle cabin background noise is equal to or below a prescribed threshold value.
Description
Technical field
The present invention relates to a kind of vehicle braked device, it, is braked by the braking force of braking force generation unit output via braking two-wire (Bi-Wire) according to the operation of braking operation pieces such as brake pedal.
Background technology
As existing brake equipment, the technology that for example exists patent documentation 1 and patent documentation 2 to be put down in writing.In these technology, have: brake wheel cylinder (wheel hydraulic actuating cylinder), thus the hydraulic pressure that its utilization is endowed carries out the work brake wheel; Hydraulic Pump, it supplies with operating fluid to brake wheel cylinder, makes it to become and the cooresponding hydraulic pressure of target braking force; And electrical motor, it drives this Hydraulic Pump.Then, control the action of above-mentioned electrical motor, produce target braking force, thereby brake, described target braking force is according to obtaining with the corresponding main hydraulic cylinder pressure that produces of the amount of entering into (operational ton) of brake pedal.
Patent documentation 1: the spy opens the 2000-159094 communique
Patent documentation 2: the spy opens the 2000-1162 communique
Summary of the invention
But, during vehicle stopping period or low speed driving etc., if the operation brake pedal, then electrical motor and Hydraulic Pump are for example merely proportional and work with the operational ton of pedal operation, thereby when obtaining target braking force, the operational sound of above-mentioned Hydraulic Pump might cause the attention of chaufeur.
The present invention proposes in order to address the above problem, and its purpose is, a kind of brake equipment that can improve the car indoor comfort at glancing impact is provided.
In order to address the above problem, vehicle braked device of the present invention has the braking force generation unit that produces with the cooresponding braking force of operational ton of the braking operation piece of driver's operation, inferring that the indoor background noise of car is less than or equal under the situation of specified value, corresponding with the brake operating of chaufeur and suppress the pace of change of above-mentioned braking force.
The effect of invention
By the present invention, under situations such as vehicle body speed or engine speed reduction, when the indoor background noise of car is less than or equal to specified value, corresponding with the brake operating of chaufeur and pace of change braking force diminishes.Its result diminishes in the operational sound of the above-mentioned braking force generation unit of glancing impact, can improve the car indoor comfort.
Description of drawings
Fig. 1 is the figure of the summary of the related hydraulic circuit of expression embodiments of the present invention.
Fig. 2 is the figure of the processing of the related BBW control part of explanation embodiments of the present invention 1.
Fig. 3 is the figure of an example of related main hydraulic cylinder pressure of expression embodiments of the present invention 1 and the relation between the target braking force (desired deceleration).
Fig. 4 is the figure of an example of related path increment of expression embodiments of the present invention 1 and the relation between the target braking force (desired deceleration).
Fig. 5 is the figure of an example of the relation of expression braking force (deceleration/decel) and coefficient of determination α.
Fig. 6 is the figure of the computing of benchmark between explanation stroke and the main hydraulic cylinder pressure and scaled value.
Fig. 7 is the figure of an example of the relation between expression deviation D s and the gradient factor.
Fig. 8 is the figure of another processing of the related BBW control part of explanation embodiments of the present invention 1.
Fig. 9 is the figure of expression sequential legend.
Figure 10 is the figure of the processing of the related BBW control part of explanation embodiments of the present invention 2.
Figure 11 is the figure of the processing of the related BBW control part of explanation embodiments of the present invention 3.
Figure 12 is the figure of the example of expression gradient factor β 4.
Figure 13 is the figure of other processing of the related BBW control part of explanation embodiments of the present invention 3.
The specific embodiment
Below, embodiments of the present invention are described with reference to the accompanying drawings.
(embodiment 1)
Fig. 1 is the summary constructional drawing of the related hydraulic circuit of present embodiment.
(structure)
Description architecture at first.
Among Fig. 1, label 1 is to constitute the brake pedal 1 that chaufeur carries out the braking operation piece of brake operating, and it links hydraulic intensifier and main hydraulic cylinder 2.The wheel hydraulic actuating cylinder 4 that above-mentioned main hydraulic cylinder 2 connects as brake wheel cylinder via the 1st path 3.Among Fig. 1, label 5 expression fluid reservoiies.
Insert electromagnetism cutout valve 6 in above-mentioned the 1st path 3.The closure state of this electromagnetism cutout valve 6 when the state of Fig. 1 is energising, this state is the bonded assembly state that disconnects between main hydraulic cylinder 2 and the wheel hydraulic actuating cylinder 4.This electromagnetism cutout valve 6 is an open state when no power, and the hydraulic pressure that becomes main hydraulic cylinder 2 can be to wheel hydraulic actuating cylinder 4 condition of supplying.
Label 7 and 8 is Hydraulic Pumps 8 that electrical motor 7 and this electrical motor 7 drives, and they are the braking force generation units that produce braking force in braking two-wire (below be also referred to as BBW) control.Electrical motor 7 is by control signal (control current) control action from brake controller 9, by the driving torque driving Hydraulic Pump 8 of this electrical motor 7.Among Fig. 1, gear type pump is carried out illustration as Hydraulic Pump 8.The introducing port of Hydraulic Pump 8 connects fluid reservoir 5 via the 2nd path 10, ejiction opening connects above-mentioned the 1st path 3 via the 3rd path 11, operating fluid in the fluid reservoir 5 can be drawn via the 2nd path 10, and this operating fluid can be via the 3rd path 11 to 4 ejections of wheel hydraulic actuating cylinder.The 3rd path 11 insert the hold-off valve 12 that constitutes by electromagnetic proportional valve midway.In addition, wheel hydraulic actuating cylinder 4 connects the 2nd path 10, the 2 paths 10 via the 4th path 13 and is communicated with the reducing valve 14 that connection is made of electromagnetic proportional valve in above-mentioned fluid reservoir 5, the 4 paths 13.
Then, under the state of BBW control, above-mentioned cutout valve 6 becomes closure state, and when supercharging, hold-off valve 12 becomes open state, reducing valve 14 becomes closure state, operating fluid by Hydraulic Pump 8 ejections carries out supercharging to 4 supplies of wheel hydraulic actuating cylinder, and during decompression, hold-off valve 12 becomes closure state, reducing valve 14 becomes open state, and the operating fluid in the wheel hydraulic actuating cylinder 4 is back in the fluid reservoir 5 and reduces pressure.
Here, label 15 is stroke sensors, exports brake controller 9 to after detecting the operational ton of brake pedal 1.Label 16 is the pressure sensors that detect main hydraulic cylinder pressure P m (the brake request amount that is equivalent to chaufeur), exports detected pressure signal to brake controller 9.Label 17 is the pressure sensors that detect the wheel cylinder pressure, exports detected pressure signal to brake controller 9.Label 18 is pressure sensors that the ejection of detective liquid press pump 8 is pressed, and exports detected pressure signal to brake controller 9.
In addition, above-mentioned brake controller 9 is made of for example micro controller system of CPU, ROM, RAM, digital port, A/D port, built-in various timing functions (or multi-disc machine of realization identical function).Export control signals by this brake controller 9 to each valve and electrical motor 7.
This brake controller 9 has control part main body 9A, and it is corresponding with braking mode and carry out to each valve output control signal etc.; And BBW control part 9B, it carries out BBW control.
Below, with reference to the processing of the above-mentioned BBW control part 9B of figure 2 explanation when the supercharging.This BBW control part 9B is in the work of the sampling period of each appointment, at first in step S10, from the path increment S (operational ton) of stroke sensor 15 input brake pedals 1, in step S20, behind pressure sensor 16 input main hydraulic cylinder pressure P m, jump to step S30.
Judged whether brake request among the step S30, judging has under the situation of brake request, jumps to step S40, and judging does not have to return after the end process under the situation of brake request.The judgement of brake request can by path increment S whether be on the occasion of or main hydraulic cylinder pressure P m whether be on the occasion of or brake switch whether be that technique known such as On are judged.
Among the step S40, jump to step S50 behind the calculating target braking force Fs (desired deceleration).
Target braking force Fs is for example according to Fig. 3, obtains after main hydraulic cylinder pressure P m being multiply by the gain K2 of regulation.
Fs＝Gp＝K2×Pm
Or, obtain target braking force Fs=Gs by path increment S based on as corresponding diagram of Fig. 4 etc.
In addition, both calculate under the situation of target braking force Fs according to path increment S and main hydraulic cylinder pressure P m, for example use coefficient of determination α (＜1) to calculate target braking force Fs by following formula, and this coefficient of determination as shown in Figure 5, by target braking force decision last time, big more its value of target braking force is big more.
Fs＝G＝(1-α)×Gs+αGp
In addition, the method for calculating of above-mentioned target braking force Fs is an example, also can carry out computing with other method of calculating.
In step S50, behind following formula computing current braking force Fr and the deviation delta F between the target braking force Fs, jump to step S60 then.Current braking force Fr is for example by obtaining after the gain of the wheel cylinder pressure be multiply by regulation.
ΔF＝Fs-Fr
Then in step S60, judge whether to be in during vehicle stops, judgement is to be under the situation of vehicle in stopping, and jumps to step S70, under the situation that vehicle does not stop, jumping to step S110.
The processing of this step S60 is to infer whether the indoor background noise of car is less than or equal to the processing of specified value.
Here, in step S60, also can replace the judgement of vehicle in stopping, but according to signal from vehicle body speed detection unit (in Fig. 1, being represented by dotted lines), judge vehicle body speed be less than or equal to specified value (the moving velocity degree when for example being less than or equal to traffic congestion or be about to stop before speed) or according to signal from engine speed detecting unit (in Fig. 1, being represented by dotted lines), judge that engine speed is less than or equal under the situation of regulation rotating speed, infer that the indoor background noise of car is less than or equal to specified value.In addition, also can obtain near the indoor for example chaufeur head of car sound, judge by the size of this sound whether the indoor background noise of car is less than or equal to specified value by sound detection unit (in Fig. 1, being represented by dotted lines) such as microphones.The treatment scheme of this situation as shown in Figure 8.In this treatment scheme, in step S25, read the information processing that step S60 uses among the indoor volume of the speed of a motor vehicle, engine speed, car.
Here, the above-mentioned background noise is from the outdoor indoor sound of car that conducts to of car, for example can be the operational sound of load sound, engine sound, air-conditioning.
Calculate among the S70 and the actual cooresponding conversion path increment of main hydraulic cylinder pressure P m Sp, jump to step S80 then.
Computing at above-mentioned conversion path increment Sp describes.
At first, obtain path increment S when depressing brake pedal 1 very slowly and the relation between the main hydraulic cylinder pressure P m, as benchmark H (with reference to figure 6).In addition, when the speed that depresses of brake pedal 1 was very fast, even identical path increment S for example shown in the R among Fig. 6, compares with the value of obtaining according to the relation of benchmark H, actual main hydraulic cylinder pressure P m also became bigger value.
Then, obtain the path increment S under the situation of using said reference H according to benchmark H, as with the cooresponding conversion path increment Sp of actual main hydraulic cylinder pressure P m (with the cooresponding actual value of the stroke of reality) of input.
Among the step S80, obtain deviation D s (=Sp-S), jump to step S90.
This deviation D s is equivalent to the deviation of the real response of the main hydraulic cylinder pressure P m relative with enter into (operation of braking operation piece) of brake pedal 1 with respect to said reference H.
In addition, also can be as shown in Figure 6, use the relation of said reference H, obtain the main hydraulic cylinder pressure P mp after current path increment S converted, with the deviation (Pm-Pmp) between this scaled value and the actual main hydraulic cylinder pressure P m as above-mentioned deviation D s.
Among the step S90,, jump to step S100 then according to above-mentioned deviation D s compute gradient factor beta 1 (≤1).This gradient factor β 1 diminishes when 1 value and deviation D s increase for being less than or equal to.For example can be by decisions such as corresponding diagram shown in Figure 7.In addition, deviation D s is always greater than under 1 the situation, also can be with the inverse of deviation D s as gradient factor β 1.
Among the step S100, be shown below, multiply by gradient factor β 1 by deviation delta F with above-mentioned braking force, corresponding with above-mentioned deviation D s and suppress the deviation delta F of braking force.The rotating speed that can suppress electrical motor 7 and Hydraulic Pump 8 thus, thus suppress to boost gradient.
ΔF＝ΔF×β1
Among the step S110, the deviation delta F based on above-mentioned braking force is shown below, and calculates the control current Im flow to electrical motor, after adjusting this control current and becoming electrical motor 7 electric currents, and end process.
Im＝ΔF×K1
Wherein, K1 is the gain of regulation.
Here, above-mentioned processing shown in Figure 2 only represents that reducing valve 14 is closure state, the treatment scheme part when hold-off valve 12 is open state, booster brake power.During decompression, hold-off valve 12 is a closure state, and reducing valve 14 is an open state.
(action effect)
In the brake equipment of said structure, if infer when the indoor background noise of car is less than or equal to specified value, be that the rotating speed of Hydraulic Pump 8 reduces with the response variance Ds corresponding amount of benchmark H as benchmark, relative with stroke main hydraulic cylinder pressure P m then by rotating speed with electrical motor 7, can make electrical motor 7 is the operational sound reduction of Hydraulic Pump 8, improves the car indoor comfort of glancing impact.In addition, record and narrate at Hydraulic Pump 8 here, also can the replacement liquid press pump and link via wire rod and wheel hydraulic actuating cylinder.
Here, though the rotating speed of electrical motor 7 descends more, the time that reaches target braking force Fs is long more since be when parking or situation such as utmost point low speed under, so no problem.
Fig. 9 represents another sequential chart of braking force.In addition, the example of other following embodiments is is also recorded and narrated in Fig. 9 in the lump.
This sequential legend is to calculate example under the situation of target braking force Fs according to path increment S and main hydraulic cylinder pressure P m, F0 is the passing that does not suppress the braking force of (β 1=1) under the situation of rotating speed of electrical motor 7 by above-mentioned gradient factor β 1, and F1 is the passing that suppresses the braking force under the situation of electrical motor 7 rotating speeds by above-mentioned gradient factor β 1.
As shown in Figure 9, because the response variance correcting motor 7 according to operating system (input system) side of calculating target braking force Fs side is the rotating speed of Hydraulic Pump 8, so can suppress the rotating speed of Hydraulic Pump 8 at the operation initial stage of brake pedal 1, the initial response of above-mentioned correction (regularly) is good.
In addition, above-mentioned steps S70～S100 constitutes variation inhibition unit.
(embodiment 2)
Below with reference to description of drawings embodiment 2.In addition, at the parts identical, give same numeral and describe with above-mentioned embodiment.
The basic structure of present embodiment is identical with above-mentioned embodiment 1, difference is, among the step S60 of above-mentioned BBW control part 9B in the processing of Fig. 2, judge that the indoor background noise of above-mentioned car is less than or equal under the situation of specified value, replace the processing of step S70～step S100, the processing of carrying out step S265 shown in Figure 10～step S300 suppresses the unit as pace of change.
That is, among the step S265, input is pressed from the ejection of the Hydraulic Pump 8 of pressure sensor, then in step S270, according to jumping to step S280 behind the hydraulic pressure pump pressure Ps of following formula calculating by target braking force Fs deduction.
Ps＝Fs×K3
Wherein, K3 is gain.
Among the step S280, the operating lag amount Δ P by the following formula calculating Hydraulic Pump 8 relative with target braking force Fs jumps to step S290 then.
ΔP＝Ps-Pr
Among the step S290, according to jumping to step S300 behind above-mentioned operating lag amount Δ P compute gradient factor beta 2 (≤1).This gradient factor β 2 is less than or equal to 1 value and big more it is more little at operating lag amount Δ P.For example can be according to decisions such as corresponding diagram shown in Figure 7 (not needing to use the corresponding diagram identical) with β 1.In addition, operating lag amount Δ P is greater than under 1 the situation, can be with the inverse of Δ P as gradient factor β 2.
Among the step S300, be shown below, the deviation delta F with the deviation delta F of above-mentioned braking force multiply by gradient factor β 2 back inhibition braking forces jumps to step S110.
ΔF＝ΔF×β2
Among the step S110, as noted above, calculate the control current Im that flows to electrical motor 7 according to the deviation delta F of above-mentioned braking force, after adjusting this control current and becoming electrical motor 7 electric currents, end process.
Here, in the processing of above-mentioned steps S265～S280, obtain operating lag amount (deviation) after target braking force Fs is converted into pressure, but also can be by press target propelling thrust Fs and the actual target braking force Fr calculated response retardation of inferring (deviation) according to the ejection of Hydraulic Pump 8.
(action effect)
In the brake equipment of said structure, be less than or equal to specified value if infer the indoor background noise of car, be the corresponding amount of operating lag Δ P that the rotating speed of Hydraulic Pump 8 reduces the braking force generation unit (electrical motor 7 and Hydraulic Pump 8) relative with target braking force Fs then by rotating speed with electrical motor 7, can make electrical motor 7 is the operational sound reduction of Hydraulic Pump 8, improves the car indoor comfort of glancing impact.
Fig. 9 represents other sequential charts of braking force simultaneously.This sequential legend is to calculate example under the situation of target braking force Fs according to path increment S and main hydraulic cylinder pressure P m both sides, F0 is the passing that does not suppress the braking force of (β 2=1) under the situation of rotating speed of electrical motors 7 by above-mentioned gradient factor β 2, and F2 is the passing that suppresses the braking force under the situation of rotating speed of electrical motors 7 by above-mentioned gradient factor β 2.
Compare with response variance, under the bigger situation of the response variance of the braking force generation unit relative, just can suppress the rotating speed of Hydraulic Pump 8 more rightly with target braking force Fs as operating system (input system) side of enforcement mode 1.That is, owing to compare with embodiment 1, the correction execution time is longer, and the continuation of correction is good, so can carry out the correction that rotating speed suppresses more accurately.
Here, also can use the gradient factor β 2 that obtains according to the deviation of above-mentioned output system, and the gradient factor β that obtains according to the deviation of input system as shown in Embodiment 11 both suppress the rotating speed of electrical motor 7.For example can be in the treatment scheme of Fig. 2, by after step S100 and then, carrying out the processing of above-mentioned steps S265～step S300, the deviation delta F of the target braking force Fs that obtains among the step S50 is shown below multiply by β 1 and β 2.
ΔF＝β1×β2×ΔF
The sequential legend of the passing of braking force in this case becomes as the F3 among Fig. 9, by the deviation of input system and the deviation of output system, the rotating speed that can suppress electrical motor 7 is the correction of the rotating speed of Hydraulic Pump 8, owing to can realize the state of accuracy (good correction continuation) of the correcting value of the responsibility (good timing) of the correction in the embodiment 1 and above-mentioned embodiment 2 simultaneously, can reduce operational sound.
(embodiment 3)
Below with reference to description of drawings embodiment 3.In addition, giving same numeral at parts identical with above-mentioned embodiment etc. describes.
The basic structure of present embodiment is identical with above-mentioned embodiment, but in the processing (Fig. 2) of BBW control part 9B, the processing after the step S30 (suppressing the cooresponding processing in unit with pace of change) there are differences as shown in figure 11.
Promptly, if judge among the step S30 brake request arranged, then jump to step S60, judge whether the vehicle indoor background noise that stops to wait for bus is less than or equal to specified value, in judgement is to be less than or equal to jump to step S410 under the situation of specified value, in " 0 " substitution coefficient of determination α, jump to step S430 then.Another example (with reference to figure 8) with above-mentioned embodiment 1 is identical in addition, under the situation of carrying out the deduction that the indoor background noise of car is less than or equal to specified value by the indoor volume of the speed of a motor vehicle, engine speed or car, carry out with the treatment scheme that Figure 13 was put down in writing and to handle.
In step S60, judge under the indoor situation of background noise of car and jump to step S420 greater than specified value.
Among the step S420, as shown in Figure 5, set coefficient of determination α (0＞α＞1) and make big more this coefficient of determination of target braking force Fs (deceleration/decel) of last time also big more, jump to step S430.Among the step S430,, obtain target braking force Gp by main hydraulic cylinder pressure P m after main hydraulic cylinder pressure P m being multiply by the gain K2 of regulation according to Fig. 3.
Gp＝K2×Pm
In addition, based on curve corresponding diagram shown in Figure 4 etc., obtain target braking force Fs=Gs according to path increment S.
Then,,, utilize coefficient of determination α, set the contribution degree of main hydraulic cylinder pressure P m and path increment S, finally calculate target braking force Fs by following formula at main hydraulic cylinder pressure P m and both target braking force Fs of path increment S according to following formula.
Fs＝G＝(1-α)×Gs+αGp
In step S440, current braking force Fr and the deviation delta F between the target braking force Fs jump to step S110, calculating motor 7 control current Im after calculating by following formula.
ΔF＝Fs-Fr
(action effect)
As shown in Figure 6, just zooming more situation is relative with the fast more main hydraulic cylinder pressure P m of entering into of brake pedal 1, the indoor background noise of car is less than or equal under the situation of specified value, owing to only use the path increment S of brake pedal 1 to calculate target braking force Fs, so can be by the reduction gradient of boosting, promptly reduce Hydraulic Pump 8 rotating speeds, thereby suppress the operational sound of the Hydraulic Pump 8 of glancing impact.
F4 is the passing of the braking of present embodiment among Fig. 9, compares with F0 as can be known, and the gradient of boosting reduces.
Here, in the above-described embodiment, in step S410, coefficient of determination α is changed to 0, but is not limited thereto.For example, also can when obtaining target braking force Fs, the contribution degree of main hydraulic cylinder pressure P m be diminished by multiply by the gradient factor of explanation in above-mentioned embodiment 1 or the embodiment 2 for the α that in step S420, calculates.
(other embodiments)
(1) in above-mentioned embodiment 1 and the embodiment 2, the gradient factor β 1 that utilization is obtained by the deviation of input system, the gradient factor β 2 that obtains by the deviation (operating lag amount) of output system or by both β 1 * β 2 of combination, the deviation delta F of target braking force Fs is diminished, but be not limited thereto.Also can be according to the output delay amount of the Hydraulic Pump 8 relative with the path increment S of brake pedal 1, compute gradient factor beta 3 (＜1) multiply by the deviation delta F of target braking force Fs with this gradient factor β 3, suppresses the rotating speed of electrical motor 7 and Hydraulic Pump 8.
(2) in addition, as shown in figure 12, also can calculate, this gradient factor β 4 be multiply by the deviation delta F of target braking force Fs, suppress the rotating speed of electrical motor 7 and Hydraulic Pump 8 less than 1 and vehicle body speed or the more little gradient factor β 4 of big more its value of engine speed.
(3) in addition, the sound that inspection vehicle is indoor, infer that the indoor background noise of car is less than or equal under the situation of specified value, also can be according to the acoustic pressure of this sound, calculating is less than 1 and the more little gradient factor β 4 of more little its value of acoustic pressure, this gradient factor β 4 be multiply by the deviation delta F of target braking force Fs, suppress the rotating speed of electrical motor 7 and Hydraulic Pump 8.
(4) in addition, also can have near the sound detection unit of the acoustic pressure the detective liquid press pump 8, near the acoustic pressure this Hydraulic Pump 8 suppresses the control of the rotating speed of electrical motor 7 during above specified value.
Here, after present inventors confirmed, the acoustic pressure (size of sound) that produces owing to electrical motor work had the big more tendency of high more its value of rotating speed, but can not produce extra high crest frequency composition.Relative therewith, owing to the acoustic pressure that hydraulic pump works produces, can confirm the tangible crest frequency composition of the sour jujube shape that forms by the rotating speed composition, think that peak value that this assigned frequency produces becomes the reason of ear-piercing sound (tone color).Based on this, obtain the motor speed that can not produce ear-piercing acoustic pressure in advance owing to hydraulic pump works, for example make the rotating speed of the acoustic pressure of Hydraulic Pump a little less than the acoustic pressure of (conductively-closed) electrical motor, the inhibition electrical motor makes it become this rotating speed and gets final product.
In addition, in the above-described embodiment, the situation that constitutes the braking force generation unit of braking with electrical motor and Hydraulic Pump is carried out illustration, but is not limited thereto.Thereby also go for carrying out continuous current electromotor and drive the brake equipment that produces the braking force type by the EMB mode.
In addition, Hydraulic Pump is illustrated as gear type pump, also can be plunger pump etc.
Claims (8)
1. vehicle braked device, it has:
Braking operation piece, it is by driver's operation;
Main hydraulic cylinder, it produces the cooresponding main hydraulic cylinder pressure of operation with braking operation piece; And
Electrical motor, it is controlled, with the generation target braking force,
It is characterized in that,
Be less than or equal to specified value if infer the indoor background noise of car, then the brake operating with chaufeur is corresponding, suppresses the rising of the pace of change of above-mentioned braking force.
2. vehicle braked device according to claim 1 is characterized in that,
Be less than or equal to defined threshold if judge the indoor sound of car, infer that then the indoor background noise of above-mentioned car is less than or equal to the afore mentioned rules value.
3. vehicle braked device according to claim 1 and 2 is characterized in that,
Thereby have by the Hydraulic Pump of above-mentioned direct motor drive to brake wheel cylinder supply hydraulic pressure, the big more afore mentioned rules threshold value of the sound of above-mentioned Hydraulic Pump is also big more.
4. vehicle braked device according to claim 1 and 2 is characterized in that,
The sound of above-mentioned electrical motor makes the afore mentioned rules threshold value become big when big.
5. vehicle braked device according to claim 3 is characterized in that,
Suppress the rotating speed of electrical motor by exporting operating lag, thereby suppress the pace of change of above-mentioned braking force corresponding to the Hydraulic Pump relative with the operation of above-mentioned braking operation piece.
6. vehicle braked device according to claim 1 is characterized in that,
Relation between the main hydraulic cylinder pressure of the operational ton of above-mentioned braking operation piece and and output relative with this operational ton is set as benchmark in advance, corresponding to the deviation of the actual main hydraulic cylinder pressure-responsive relative with respect to said reference with the operation of the braking operation piece of reality, the revolution that suppresses electrical motor suppresses the pace of change of above-mentioned braking force thus.
7. vehicle braked device according to claim 1 is characterized in that,
Be less than or equal to the afore mentioned rules value if infer the indoor background noise of car, the contribution degree of the above-mentioned main hydraulic cylinder pressure when then reducing to obtain above-mentioned target braking force.
8. vehicle braked device according to claim 1 is characterized in that,
If judge that the speed of vehicle is less than or equal to specified speed or engine speed is less than or equal to the regulation rotating speed, infer that then the indoor background noise of car is less than or equal to the afore mentioned rules value.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006066187 | 2006-03-10 | ||
| JP2006066187 | 2006-03-10 | ||
| JP2006315935 | 2006-11-22 |
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| CN101032959A true CN101032959A (en) | 2007-09-12 |
| CN100572155C CN100572155C (en) | 2009-12-23 |
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| CNB2007100868103A Expired - Fee Related CN100572155C (en) | 2006-03-10 | 2007-03-12 | The vehicle braked device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104163167A (en) * | 2014-08-15 | 2014-11-26 | 中联重科股份有限公司 | Air brake control system, method and device and wheel type engineering machinery |
| CN108995617A (en) * | 2018-07-25 | 2018-12-14 | 合肥市智信汽车科技有限公司 | A kind of car braking noise removing method |
| CN111791864A (en) * | 2015-08-10 | 2020-10-20 | Ntn株式会社 | Electric brake system |
| CN112384423A (en) * | 2018-06-25 | 2021-02-19 | 株式会社爱德克斯 | Vehicle brake control device |
| CN112487705A (en) * | 2020-11-12 | 2021-03-12 | 北京慧拓无限科技有限公司 | Mine car parameter optimization method and system based on real-time data |
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2007
- 2007-03-12 CN CNB2007100868103A patent/CN100572155C/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104163167A (en) * | 2014-08-15 | 2014-11-26 | 中联重科股份有限公司 | Air brake control system, method and device and wheel type engineering machinery |
| CN104163167B (en) * | 2014-08-15 | 2017-02-01 | 中联重科股份有限公司 | Air brake control system, method and device and wheel type engineering machinery |
| CN111791864A (en) * | 2015-08-10 | 2020-10-20 | Ntn株式会社 | Electric brake system |
| CN112384423A (en) * | 2018-06-25 | 2021-02-19 | 株式会社爱德克斯 | Vehicle brake control device |
| CN108995617A (en) * | 2018-07-25 | 2018-12-14 | 合肥市智信汽车科技有限公司 | A kind of car braking noise removing method |
| CN112487705A (en) * | 2020-11-12 | 2021-03-12 | 北京慧拓无限科技有限公司 | Mine car parameter optimization method and system based on real-time data |
| CN112487705B (en) * | 2020-11-12 | 2024-07-19 | 中科慧拓(北京)科技有限公司 | Mine car parameter optimization method and system based on real-time data |
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| CN100572155C (en) | 2009-12-23 |
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