CN102371987A - Efficiency measuring method of electrically operated parking brake in motor vehicle - Google Patents
Efficiency measuring method of electrically operated parking brake in motor vehicle Download PDFInfo
- Publication number
- CN102371987A CN102371987A CN2011102310583A CN201110231058A CN102371987A CN 102371987 A CN102371987 A CN 102371987A CN 2011102310583 A CN2011102310583 A CN 2011102310583A CN 201110231058 A CN201110231058 A CN 201110231058A CN 102371987 A CN102371987 A CN 102371987A
- Authority
- CN
- China
- Prior art keywords
- parking brake
- brake
- electric
- described method
- parking
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/74—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
- B60T13/741—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive acting on an ultimate actuator
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
- B60T17/18—Safety devices; Monitoring
- B60T17/22—Devices for monitoring or checking brake systems; Signal devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T7/00—Brake-action initiating means
- B60T7/02—Brake-action initiating means for personal initiation
- B60T7/08—Brake-action initiating means for personal initiation hand actuated
- B60T7/10—Disposition of hand control
- B60T7/107—Disposition of hand control with electrical power assistance
Abstract
The invention relates to an efficiency measuring method of an electrically operated parking brake in a motor vehicle. In the method, a reversal clearance of the parking brake is determined according to a time difference between the starting of a loosen process and the reduction of a clamping force and the reversal clearance is taken as a function of the reversal clearance to measure the efficiency.
Description
Technical field
The present invention relates to a kind of method of efficient of the Parking Brake that can handle with electric means that is used for asking for self-propelled vehicle.
Background technology
In DE 103 61 042 B3, described a kind of method that is used to control Parking Brake, said Parking Brake comprises electro-motor as actr, and this electro-motor faces the brake disc extruding with friction covering and is used to produce braking force Parking power in other words.For the variation to producing owing to wearing and tearing, heat affecting or changes in resistance of cross-feed power compensates, confirm the size of the breaking current of electro-motor as the function of the number of times of the manipulation of said Parking Brake.Through the transmission device of self-locking, even after breaking off electro-motor, also keep the Parking power that is reached.
According to DE 103 61 042 B3, adjust Parking power according to the number of times of the manipulation of said Parking Brake, so that can the efficient of variation be compensated.But this is with the prerequisite that is associated as of the number of times of said manipulation and the linearity between the said efficient.
Summary of the invention
Task of the present invention is in long time of run and with higher precision, sufficiently high braking during standstill power to be provided in Parking Brake.
This task is resolved with the said characteristic of claim 1 by the present invention.Dependent claims shows favourable improvement project.
By method of the present invention, ask for the current efficient of the Parking Brake that can handle with electric means in the self-propelled vehicle for said with higher precision.Said efficient is calculated as the function in the reverse gap in the Parking Brake; Said reverse gap is meant the gap of the mechanical distance in the Parking Brake, just in the electric brake actuator of said Parking Brake and the brake piston gap in the transmission distance between and the coefficient friction brake unit of brake clamp in other words.Produce Parking power in other words after gripping power or the squeese pressure and when after making the self-propelled vehicle Parking, unclamping said Parking Brake again thereupon said reverse gap work.In this process, before reducing Parking power, at first should overcome and reverse the gap.
The size in said reverse gap receives the restriction of different influence factors.On the one hand said reverse gap depends on the member tolerance, and said on the other hand reverse gap especially also receives the restriction of the variation that externalities causes such as wearing and tearing or by heat when time of run is longer and when often handling Parking Brake.
By method of the present invention, ask for the efficient of said Parking Brake for said as the function that reverses the gap.Exist that itself is known related in said efficient between the gap with reversing, this association can be kept at the adjustment appearance in other words in the controller, thereby when knowing said reverse gap, also can ask for said efficient.Can regulate the size of said squeese pressure again according to current efficient; The power that is just produced by said electric brake actuator is the size of moment in other words, and said power moment in other words is delivered to such as transmission device or main shaft device by means of gear unit and is used to produce desired Parking power on the friction brake unit.
Asking for said reverse gap of efficient is the basis, and the beginning of said reverse gap and release process was associated with time difference between the reduction of gripping power.This observe said Parking Brake electric brake actuator characteristic parameter and from the change curve of said characteristic parameter, confirm the time difference between the reduction of said release process and gripping power.The moment that said gripping power reduces is characterised in that the change curve of sign of the characteristic parameter of said electric brake actuator, and this can confirm through the analysis to said characteristic parameter.Can from the change curve of said characteristic parameter, confirm thus said gripping power reduction the moment and after the beginning of knowing said release process, confirm the said time difference, this time difference is the yardstick that is used for the reverse gap of said Parking Brake.
Said electric brake actuator can be characteristic parameter electric or machinery for reversing the observed characteristic parameter in gap.The voltage of considering said electric brake actuator as electric characteristic parameter is electric current in other words, then considers the moment that rotating speed or gripping power are produced by said brake actuator in other words as the characteristic parameter of machinery.Advantageously consider to use the characteristic parameter that can under the situation that does not have the additional hardware expense, try to achieve, the electric current of preferred brake motor, voltage is rotating speed in other words.As long as also can try to achieve the moment that said gripping power is produced by said brake actuator in other words, that also can take in it.Need extra sensor to be used to detect said power moment in other words in case of necessity.
Said characteristic parameter the change curve of the sign in the moment that said gripping power is eliminated suddenly through great-jump-forward the load that switches on the electric brake actuator produce; Said subsequently characteristic parameter has turning point and/or the point of transition that can discern in change curve, this can confirm through the analysis to said characteristic parameter.Said turning point point of transition is in other words being represented the significant variation in the change curve of said characteristic parameter, and the beginning of the release process of expression gripping power.Especially said electric current and rotating speed have such point of transition.But the voltage of the said brake actuator change curve of power or moment in other words is characterised in that can detectedly changing of sign.
In order to enlarge tolerance, possibly advantageously from a plurality of release process of said Parking Brake, try to achieve and reverse the gap with respect to error.In addition maybe be advantageously, inspection monodrome or ask the credibility of average numerical value, method is whether the numerical value that is calculated in the said reverse of inspection gap surpasses the number range that allows.
Said efficient with reverse related between the gap and depend on observed Parking Brake especially.Not only consider the related of the linearity that possibly exist as approximate function but also consider such as as second order or the more nonlinear association that exists of the function of high-order at this.
As electric brake actuator, advantageously use the electro-motor in the said Parking Brake.But also can consider the actuating unit of all other the actr that can regulate with electric means such as electromagnetism in principle, said actr is carried out the adjusting motion of the machinery that is used to produce braking force when on load voltage.
Saidly carry out in the controller in other words by the adjustment appearance of method of the present invention in self-propelled vehicle, said adjustment appearance controller in other words can be the component part of said emergency brake system.
Description of drawings
Other advantage and favourable embodiment can obtain from other claim, description of drawings and accompanying drawing.Accompanying drawing illustrates as follows:
Fig. 1 is the section of the Parking Brake in the self-propelled vehicle, and this Parking Brake has the electro-motor that is used for to the brake piston loading,
Fig. 2 is the chart with change curve of different machinery and electric characteristic parameter, and said characteristic parameter is as the function of the time in unclamping the process of Parking Brake,
Fig. 3 is the efficient and the related chart that reverses between the gap with said Parking Brake, and
Fig. 4 is the diagram of circuit that is used to ask for the efficient of the said Parking Brake that can handle with electric means.
The specific embodiment
The Parking Brake 1 that is used for self-propelled vehicle has been shown in Fig. 1, in the halted state of self-propelled vehicle, has produced gripping power, be used to make the self-propelled vehicle Parking through this Parking Brake 1.The electric brake actuator 4 that said Parking Brake 1 has brake clamp 2, brake piston 3 and is configured to electro-motor, said brake actuator 4 is regulated brake piston 3 towards the direction of the pliers 8 of said brake clamp 2.At glancing impact, the friction brake unit that the end face freely 9 of said brake piston 3 is arranged on the said brake piston in other words is expressed to by on the brake disc of said brake clamp 2 overlap joints, and produces braking force gripping power in other words thus.
The said brake actuator 4 that is configured to electro-motor is driving main shaft 5 through the transmission device of intermediate arrangement; Rotatablely moving of this main shaft 5 converts axial adjusting motion into through driver element 6, through said axial adjusting motion said brake piston 3 is adjusted in the braking position.Said driver element 6 is provided with negative thread and is placed on the outside thread of said main shaft 5, this driver element 6 be in hollow cylinder brake piston 3 inside and be connected with said brake piston 3.
In order to detect the current efficiency eta of actuating device, from the beginning t that unclamps of said Parking Brake with electric brake actuator 4 and the transmission device of being attached troops to a unit and main shaft
AWith at moment t
LConfirm the reverse gap of said Parking Brake among the time difference △ t between the reduction of the reality of said gripping power.As can be from finding out Fig. 2, the responsibility in said reverse gap be, is not that beginning along with release process is at moment t
AReduce gripping power immediately, but with time delay at moment t
LJust reduce gripping power.This time difference △ t is the yardstick that is used for the reverse gap of said Parking Brake.
The time curve of different character parameter when unclamping Parking Brake has been shown in Fig. 2.Voltage U and the change curve of electric current I on the electric brake actuator, the rotation speed n and the gripping power F of brake actuator in Fig. 2, have been charged to.Change curve according to said gripping power F can be clear that, is not that beginning along with release process is at moment t owing to reverse the said gripping power F in gap
AJust reduce, but at moment t
LJust reduction that is to say with time lag △ t and reduces.From said time difference △ t, confirm said reverse gap,, must confirm t constantly in order to try to achieve this time difference △ t
L, at this moment t
LReduce said gripping power F.This can confirm by means of the change curve of the sign of voltage U, electric current I and rotation speed n.
Electric current I is at moment t
LOccupy local minimum, wherein said change curve is at moment t
LHas bending.Inversion point is being represented in this bending simultaneously.Through analysis, can confirm said moment t with higher precision according to the change curve that characterizes to current value
L
Also can from voltage U, confirm t constantly
LVoltage U is at moment t
AWith t
LBetween rise and at moment t precipitously
LHave maxim, this maxim can be confirmed through the corresponding analysis to the change curve of magnitude of voltage.
The rotation speed n of the electro-motor that uses as electric brake actuator is at moment t
LThe local maximum that has the form of bending.
Mechanical efficiency eta has been shown in Fig. 3 and has reversed related between the S of gap.Said association almost is linear association, and wherein said efficiency eta diminishes with the increase that reverses gap S.
The diagram of circuit of the efficient that is used for definite said Parking Brake has been shown in Fig. 4.Unclamping of said first method step 10 expression drgs, the time difference △ t between the beginning through the analysis of the change curve of the characteristic parameter of brake actuator being tried to achieve release process in second method step 11 and the reduction of gripping power.Be regarded as characteristic parameter at this such as electric current I with brake actuator.
In next method step 12, confirm said reverse gap S as the function of time difference △ t.It is preferred directly proportional with said time difference △ t that this reverses gap, wherein also can consider other linearity or nonlinear association in case of necessity, but this association itself is known and be kept at and adjust appearance in other words in the controller.
Possibly advantageously not only consider the single numerical value of said reverse gap S, but from a plurality of release process of said Parking Brake, try to achieve the aviation value that is used for said reverse gap S in case of necessity.
The credibility of the said reverse of inquiry gap S in next method step 13.This reverse gap S must be within the number range of permission, and deviation is so big in other words otherwise exist error, thereby can not reasonably said reverse gap S be used for further processing.If said reverse gap S is not within the number range that allows, that just follows not-branch (" N ") turns back to the beginning of method again.If opposite said reverse gap S is within the number range of permission, that is just followed and is-the next method step of branch (" Y ") continuation execution.
In method step 14, confirm the mechanical efficiency η of said Parking Brake as the function of said reverse gap S.This association itself is known equally and is kept at said adjustment appearance in other words in the controller.Confirm to remain the gripping power F that produces by said brake actuator at next function that can be used as down said efficiency eta in method step 15.
Claims (11)
1. be used for asking for the method for efficient of the Parking Brake (1) that can handle with electric means of self-propelled vehicle; Wherein when unclamping Parking Brake (1), confirm the reverse gap (S) of said Parking Brake (1) the time difference (△ t) between the reduction of the beginning of release process and gripping power; Wherein from the characteristic parameter of the electric brake actuator (4) of said Parking Brake (1), confirm the said time difference (△ t), and ask for said efficient (η) as the function in said reverse gap (S).
2. by the described method of claim 1, it is characterized in that the electric characteristic parameter of asking for the electric brake actuator (4) of said Parking Brake (1) in said reverse gap (S) is the basis.
3. by the described method of claim 2, it is characterized in that the voltage (U) of considering to use said electric brake actuator (4) as electric characteristic parameter is electric current (I) in other words.
4. by each described method in the claim 1 to 3; It is characterized in that; The characteristic parameter of asking for the machinery of said electric brake actuator (4) in said reverse gap (S) is the basis, and especially rotating speed (n) or the gripping power Parking power in other words (F) with said brake actuator (4) is the basis.
5. by each described method in the claim 1 to 4, it is characterized in that, confirm in the turning point of the moment from the change curve of observed characteristic parameter that said Parking power (F) begins to reduce.
6. by each described method in the claim 1 to 5, it is characterized in that, confirm in the point of transition of the moment from the change curve of observed characteristic parameter that said Parking power (F) begins to reduce.
7. by each described method in the claim 1 to 6, it is characterized in that, a plurality of release process of said Parking Brake (1) are observed in the hope of said reverse gap (S).
8. by each described method in the claim 1 to 7, it is characterized in that whether the numerical value in said reverse gap (S) is checked above the number range that allows.
9. by each described method in the claim 1 to 8, it is characterized in that asking for said efficient (η) of said gripping power is the basis.
10. adjust appearance controller in other words, be used for implementing by each described method of claim 1 to 9.
11. the Parking Brake in the self-propelled vehicle (1) has by the described adjustment appearance of claim 10 controller in other words.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102010039309.6A DE102010039309B4 (en) | 2010-08-13 | 2010-08-13 | Method for determining the efficiency of an electrically operated parking brake in a vehicle |
| DE102010039309.6 | 2010-08-13 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102371987A true CN102371987A (en) | 2012-03-14 |
| CN102371987B CN102371987B (en) | 2015-07-08 |
Family
ID=45528465
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110231058.3A Active CN102371987B (en) | 2010-08-13 | 2011-08-12 | Efficiency measuring method of electrically operated parking brake in motor vehicle |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP5864158B2 (en) |
| CN (1) | CN102371987B (en) |
| DE (1) | DE102010039309B4 (en) |
| FR (1) | FR2963770A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104334405A (en) * | 2013-03-14 | 2015-02-04 | 哈尼施费格尔技术公司 | A system and method for monitoring a brake stem of a mining machine |
| CN105711574A (en) * | 2014-12-22 | 2016-06-29 | 罗伯特·博世有限公司 | Method and Device for Operating a Braking Device, Braking Device |
| CN110402214A (en) * | 2017-03-31 | 2019-11-01 | 株式会社爱德克斯 | Arrester control device |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102011005842B4 (en) | 2011-03-21 | 2024-02-08 | Robert Bosch Gmbh | Method for adjusting the clamping force exerted by a parking brake in a vehicle |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002051682A1 (en) * | 2000-12-27 | 2002-07-04 | Scania Cv Ab (Publ) | Method and system for brakes of utility vehicles |
| US6435625B1 (en) * | 1997-09-29 | 2002-08-20 | Continental Teves Ag & Co., Ohg | Method for applying defined operating forces |
| CN1898110A (en) * | 2003-12-23 | 2007-01-17 | 卢卡斯汽车股份有限公司 | Parking brake and method for controlling the same |
| WO2009053430A1 (en) * | 2007-10-24 | 2009-04-30 | Continental Teves Ag & Co. Ohg | Parking brake and method for operating the same |
| CN101495351A (en) * | 2006-08-07 | 2009-07-29 | 大陆-特韦斯贸易合伙股份公司及两合公司 | Method for the operation of an electromechanically operable parking brake |
| CN101801744A (en) * | 2007-09-12 | 2010-08-11 | 大陆-特韦斯贸易合伙股份公司及两合公司 | Method for the secure release of an electromechanically actuatable parking brake |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19732168C2 (en) * | 1997-07-25 | 2003-06-18 | Lucas Ind Plc | Hydraulic vehicle brake with locking device and method for operating the same |
| JP4844435B2 (en) * | 2007-03-06 | 2011-12-28 | トヨタ自動車株式会社 | Brake device |
| JP5088502B2 (en) * | 2008-08-01 | 2012-12-05 | 日立オートモティブシステムズ株式会社 | Electric brake device |
-
2010
- 2010-08-13 DE DE102010039309.6A patent/DE102010039309B4/en active Active
-
2011
- 2011-08-10 FR FR1157281A patent/FR2963770A1/en not_active Withdrawn
- 2011-08-12 JP JP2011176985A patent/JP5864158B2/en active Active
- 2011-08-12 CN CN201110231058.3A patent/CN102371987B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6435625B1 (en) * | 1997-09-29 | 2002-08-20 | Continental Teves Ag & Co., Ohg | Method for applying defined operating forces |
| WO2002051682A1 (en) * | 2000-12-27 | 2002-07-04 | Scania Cv Ab (Publ) | Method and system for brakes of utility vehicles |
| CN1898110A (en) * | 2003-12-23 | 2007-01-17 | 卢卡斯汽车股份有限公司 | Parking brake and method for controlling the same |
| CN101495351A (en) * | 2006-08-07 | 2009-07-29 | 大陆-特韦斯贸易合伙股份公司及两合公司 | Method for the operation of an electromechanically operable parking brake |
| CN101801744A (en) * | 2007-09-12 | 2010-08-11 | 大陆-特韦斯贸易合伙股份公司及两合公司 | Method for the secure release of an electromechanically actuatable parking brake |
| WO2009053430A1 (en) * | 2007-10-24 | 2009-04-30 | Continental Teves Ag & Co. Ohg | Parking brake and method for operating the same |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104334405A (en) * | 2013-03-14 | 2015-02-04 | 哈尼施费格尔技术公司 | A system and method for monitoring a brake stem of a mining machine |
| CN105711574A (en) * | 2014-12-22 | 2016-06-29 | 罗伯特·博世有限公司 | Method and Device for Operating a Braking Device, Braking Device |
| CN105711574B (en) * | 2014-12-22 | 2019-12-31 | 罗伯特·博世有限公司 | Method and device for operating a brake device, brake device |
| CN110402214A (en) * | 2017-03-31 | 2019-11-01 | 株式会社爱德克斯 | Arrester control device |
| CN110402214B (en) * | 2017-03-31 | 2022-03-29 | 株式会社爱德克斯 | Brake control device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP5864158B2 (en) | 2016-02-17 |
| FR2963770A1 (en) | 2012-02-17 |
| CN102371987B (en) | 2015-07-08 |
| JP2012041041A (en) | 2012-03-01 |
| DE102010039309B4 (en) | 2023-03-30 |
| DE102010039309A1 (en) | 2012-02-16 |
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