CN106285281A - The anti-clamping method of a kind of automobile door lock and device - Google Patents
The anti-clamping method of a kind of automobile door lock and device Download PDFInfo
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- CN106285281A CN106285281A CN201610971869.XA CN201610971869A CN106285281A CN 106285281 A CN106285281 A CN 106285281A CN 201610971869 A CN201610971869 A CN 201610971869A CN 106285281 A CN106285281 A CN 106285281A
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- motor
- door lock
- locking
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- 238000000034 method Methods 0.000 title claims abstract description 34
- 230000000052 comparative effect Effects 0.000 claims abstract description 22
- 230000005611 electricity Effects 0.000 claims description 14
- 238000001514 detection method Methods 0.000 abstract description 4
- 230000005669 field effect Effects 0.000 description 4
- 241000208340 Araliaceae Species 0.000 description 2
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 2
- 235000003140 Panax quinquefolius Nutrition 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 235000008434 ginseng Nutrition 0.000 description 2
- 229910044991 metal oxide Inorganic materials 0.000 description 2
- 150000004706 metal oxides Chemical class 0.000 description 2
- 230000010349 pulsation Effects 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- GOLXNESZZPUPJE-UHFFFAOYSA-N spiromesifen Chemical compound CC1=CC(C)=CC(C)=C1C(C(O1)=O)=C(OC(=O)CC(C)(C)C)C11CCCC1 GOLXNESZZPUPJE-UHFFFAOYSA-N 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05F15/00—Power-operated mechanisms for wings
- E05F15/40—Safety devices, e.g. detection of obstructions or end positions
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B83/00—Vehicle locks specially adapted for particular types of wing or vehicle
- E05B83/36—Locks for passenger or like doors
- E05B83/40—Locks for passenger or like doors for sliding doors
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- Lock And Its Accessories (AREA)
- Power-Operated Mechanisms For Wings (AREA)
Abstract
The anti-clamping method of a kind of automobile door lock that the present invention provides and device, be applied to electric rear tail gate for automobile, side sliding door, and this anti-clamping method includes: obtains the cell voltage of automobile locking motor in real time；According to cell voltage, adjusting the dutycycle of the equivalent voltage of cell voltage and motor of locking, the equivalent voltage of the motor that makes to lock is stable；Obtain the temperature of current environment, lock the normal drive current of motor and anti-pinch current threshold according to this temperature computation；Obtain current environment to lock the actual current of motor；Compare actual current and the difference of normal drive current and described anti-pinch current threshold；According to comparative result, it may be judged whether anti-pinch.The anti-clamping method of a kind of automobile door lock that the present invention provides and device, during automobile door lock is moved to one-level lock-bit by secondary latch position, can substitute for anti-biting bar and realize the anti-pinch detection of arrangements for automotive doors, reduce electric rear tail gate for automobile, electronic side sliding door anti-pinch cost, and then reduce integral vehicle cost.
Description
Technical field
The present invention relates to automobile door lock anti-pinch technical field, more specifically, particularly relate to the anti-pinch of a kind of automobile door lock
Method and device.
Background technology
Along with the development of science and technology, automobile has become the portable tool of people's go off daily, various vapour
It is the fiercest to compete between man of depot, and for the favor of Win Clients, technology of improving is in constantly development, such as: motorcar electric
Rear tailgate, motorcar electric side sliding door system compare more traditional transmission rear tailgate because of the opening ways of its uniqueness and side sliding door just has
Lot of advantages, noise is low, and current of electric is little, is the most increasingly favored by client.
In the prior art, the electronic rear tailgate of automobile, electronic side sliding door use on the direction closed the door software anti-pinch and
The mode that anti-biting bar combines carries out anti-pinch.Wherein software anti-pinch is by detecting the speed of arrangements for automotive doors, the isoparametric change of electric current
Change and then detect the change of arrangements for automotive doors resistance, then with anti-grip force compares, make anti-pinch and judge.Tail after motorcar electric
Door, the door lock of electronic side sliding door are generally self-priming lock, and self-priming lockset has one-level lock-bit and secondary latch position, when arrangements for automotive doors is locked
Time, initially enter secondary latch position, subsequently enter one-level lock-bit and complete latching operation, and software anti-pinch typically arrives electronic self-priming lock fortune
Move during secondary latch position the most out of service, secondary latch position when moving to one-level lock-bit, use anti-biting bar and carry out anti-pinch, but
It is that anti-biting bar is relatively costly, does not meets the main trend reducing integral vehicle cost.
Therefore, those skilled in the art's problem demanding prompt solution is: anti-biting bar is expensive, causes the electronic rear tail of automobile
Door, electronic side sliding door anti-pinch cost are high, are unfavorable for reducing integral vehicle cost.
Summary of the invention
For solve the problems referred to above, the invention provides anti-clamping method and the device of a kind of automobile door lock, automobile door lock by
During secondary latch position moves to one-level lock-bit, can substitute for anti-biting bar and realize the anti-pinch detection of arrangements for automotive doors, reduce vapour
The electronic rear tailgate of car, electronic side sliding door anti-pinch cost, and then reduce integral vehicle cost.
For achieving the above object, the present invention provides following technical scheme:
The anti-clamping method of a kind of automobile door lock, is applied to electric rear tail gate for automobile, side sliding door, and described anti-clamping method includes:
Obtain the cell voltage of automobile locking motor in real time；
According to described cell voltage, adjust the dutycycle of the equivalent voltage of described cell voltage and described motor of locking, make
The equivalent voltage of described motor of locking is stable；
Obtain the temperature of current environment, according to normal drive current and the anti-pinch electricity of motor of locking described in described temperature computation
Stream threshold value；
Obtain the actual current of motor of locking described in current environment；
Compare described actual current and the difference of described normal drive current and described anti-pinch current threshold；
According to comparative result, it may be judged whether anti-pinch.
Preferably, in above-mentioned anti-clamping method, described according to described cell voltage, adjust described cell voltage and described on
The dutycycle of equivalent voltage of lock motor, make described in the lock equivalent voltage of motor stable, including:
Acquisition standard equivalent voltage, calculates described cell voltage and the dutycycle of described standard equivalent voltage, it is thus achieved that standard
Dutycycle；
Described dutycycle is adjusted to described standard dutycycle, make described in lock the equivalent voltage of motor equal to described standard
Equivalent voltage.
Preferably, in above-mentioned anti-clamping method, the temperature of described acquisition current environment, on described in described temperature computation
The normal drive current of lock motor and anti-pinch current threshold, including:
Obtain current environment temperature, according to described temperature obtain at said temperatures described in lock motor characteristic ginseng
Number, according to normal drive current and the anti-pinch current threshold of motor of locking described in the calculating of described characterisitic parameter.
Preferably, in above-mentioned anti-clamping method, described according to comparative result, it may be judged whether anti-pinch, including:
If described comparative result is that described anti-pinch current threshold is less than described difference, then anti-pinch, described automobile locking motor
Stop driving and being unlocked operation；
If described comparative result is described anti-pinch current threshold is more than or equal to described difference, the most not anti-pinch, on described automobile
Lock motor continues to drive.
Preferably, in above-mentioned anti-clamping method, described electric rear tail gate for automobile, side sliding door include: the first door lock and second
Door lock, including:
When described first door lock starts drive and be judged as anti-pinch, and when described second door lock does not drives, described second
Lock does not works, and described first door lock is unlocked operation；
When described first door lock and described second door lock all start to drive, described first door lock or described second door lock are sentenced
When breaking as anti-pinch, described first door lock and described second door lock are all unlocked operation；
When described first door lock is locked complete, and when described second door lock is judged as anti-pinch during driving, described the
One door lock and described second door lock are all unlocked operation.
Present invention also offers the anti-pinch device of a kind of automobile door lock, be applied to electric rear tail gate for automobile, side sliding door, described
Anti-pinch device includes:
Cell voltage acquisition module, for the cell voltage of acquisition automobile locking motor in real time；
Adjusting module, for according to described cell voltage, adjusts described cell voltage and the equivalent electric of described motor of locking
The dutycycle of pressure, make described in the lock equivalent voltage of motor stable；
Current threshold acquisition module, for obtaining the temperature of current environment, according to motor of locking described in described temperature computation
Normal drive current and anti-pinch current threshold；
Actual current acquisition module, for obtaining the actual current of motor of locking described in current environment；
Comparison module, for comparing the difference of described actual current and described normal drive current and described anti-pinch current threshold
Value；
Judge module, for according to comparative result, it may be judged whether anti-pinch.
Preferably, in above-mentioned anti-pinch device, described adjusting module specifically for:
Acquisition standard equivalent voltage, calculates described cell voltage and the dutycycle of described standard equivalent voltage, it is thus achieved that standard
Dutycycle；
Described dutycycle is adjusted to described standard dutycycle, make described in lock the equivalent voltage of motor equal to described standard
Equivalent voltage.
Preferably, in above-mentioned anti-pinch device, described current threshold acquisition module specifically for:
Obtain current environment temperature, according to described temperature obtain at said temperatures described in lock motor characteristic ginseng
Number, according to normal drive current and the anti-pinch current threshold of motor of locking described in the calculating of described characterisitic parameter.
Preferably, in above-mentioned anti-pinch device, described judge module specifically for:
If described comparative result is that described anti-pinch current threshold is less than described difference, then anti-pinch, described automobile locking motor
Stop driving and being unlocked operation；
If described comparative result is described anti-pinch current threshold is more than or equal to described difference, the most not anti-pinch, on described automobile
Lock motor continues to drive.
Preferably, in above-mentioned anti-pinch device, described electric rear tail gate for automobile, side sliding door include: the first door lock and described
Second door lock, described anti-pinch device includes:
Unlocked state, for starting drive and be judged as anti-pinch when described first door lock, and described second door lock does not drives
Time, described second door lock does not works, and described first door lock is unlocked operation；
When described first door lock and described second door lock all start to drive, described first door lock or described second door lock are sentenced
When breaking as anti-pinch, described first door lock and described second door lock are all unlocked operation；
When described first door lock is locked complete, and when described second door lock is judged as anti-pinch during driving, described the
One door lock and described second door lock are all unlocked operation.
By foregoing description, the anti-clamping method of a kind of automobile door lock that the present invention provides and device, on obtaining
The cell voltage of lock motor, adjusts the dutycycle of cell voltage and the equivalent voltage of motor of locking, the equivalent electric of the motor that makes to lock
Pressure be in steady statue, therewith by according to the temperature of surrounding can calculate motor of locking normal drive current and
Anti-pinch current threshold, obtains the actual current of motor of locking under current environmental temperature, to actual current and normal drive current
Difference and anti-pinch current threshold compare, according to comparative result, it is possible to judge whether anti-pinch.It follows that the present invention is carried
The anti-clamping method of confession and device can be locked at the self-priming of electric rear tail gate for automobile, side sliding door and be moved to one-level lock-bit by secondary latch position
Time, can substitute for anti-biting bar and realize anti-pinch, reduce electric rear tail gate for automobile, electronic side sliding door anti-pinch cost, and then reduce whole
Car cost.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
In having technology to describe, the required accompanying drawing used is briefly described, it should be apparent that, the accompanying drawing in describing below is only this
Inventive embodiment, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to according to
The accompanying drawing provided obtains other accompanying drawing.
The schematic flow sheet of the anti-clamping method of a kind of automobile door lock that Fig. 1 provides for the embodiment of the present invention；
The structural representation of the anti-pinch device of a kind of automobile door lock that Fig. 2 provides for the embodiment of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Describe, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments wholely.Based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under not making creative work premise
Embodiment, broadly falls into the scope of protection of the invention.
Embodiment one
The schematic flow sheet of the anti-clamping method of a kind of automobile door lock that Fig. 1 provides for the embodiment of the present invention one.
Embodiments provide the anti-clamping method of a kind of automobile door lock, be applied to electric rear tail gate for automobile, side sliding door,
As it is shown in figure 1, this anti-clamping method includes:
S101: obtain the cell voltage of automobile locking motor in real time.
During electric rear tail gate for automobile, side sliding door are locked, obtain the cell voltage of motor of locking.
S102: according to cell voltage, adjust the dutycycle of the equivalent voltage of cell voltage and motor of locking, make motor of locking
Equivalent voltage stable.
In the prior art, the commonly used relay of motor-drive circuit of locking drives, when motor of i.e. locking needs to drive
Cell voltage is applied to motor two ends so that it is rotate forward, when needing return, cell voltage is reversely applied to motor two ends of locking,
Make it invert.But cell voltage can change along with the difference of whole vehicle state, therefore motor movement of locking under different operating modes
Characteristic such as electric current, speed etc. all can be different.
In this step, motor-drive circuit of locking can use MOSFET (Metal-Oxide-Semiconductor
Field-Effect Transistor, metal-oxide layer semiconductcor field effect transistor) drive circuit, software uses PWM
(Pulse Width Modulation, pulse width modulation) controls, and is applied to lock the accounting for of motor both end voltage by adjustment
Empty ratio, thus the motor two ends that ensure to lock under different cell voltages apply identical equivalent voltage, thus constant in load
In the case of lock motor movement characteristic such as electric current, speed etc. all keep consistent.
S103: obtain the temperature of current environment, locks the normal drive current of motor and anti-pinch electricity according to this temperature computation
Stream threshold value.
Owing to internal resistance, the rotational angular velocity of lock counter electromotive force of motor constant and motor of locking of motor of locking all can be subject to
The impact of ambient temperature, normal drive current and the anti-pinch current threshold of motor of therefore locking can be by motors of locking
Internal resistance, the equivalent voltage of lock counter electromotive force of motor constant and the rotational angular velocity of motor of locking and motor of locking calculate.
S104: obtain current environment and lock the actual current of motor.
During electric rear tail gate for automobile, side sliding door are locked, obtain the driving electric current of motor of locking, electricity of namely locking
Machine in working order under actual current.
S105: compare actual current and the difference of normal drive current and anti-pinch current threshold.
S106: according to comparative result, it may be judged whether anti-pinch.
It is to say, can be according to the size between actual current and the difference of normal drive current and anti-pinch current threshold
Relation, it is judged that draw whether anti-pinch.Concrete, if comparative result is that anti-pinch current threshold is less than difference, then anti-pinch, automobile locking
Motor stops driving and being unlocked operation；If comparative result is that anti-pinch current threshold is more than or equal to difference, the most not anti-pinch, automobile
Motor of locking continues to drive.
By the anti-clamping method of a kind of automobile door lock that the embodiment of the present invention one provides, can electric rear tail gate for automobile,
When the self-priming lock of side sliding door is moved to one-level lock-bit by secondary latch position, can substitute for anti-biting bar and realize the detection of arrangements for automotive doors anti-pinch,
Reduce electric rear tail gate for automobile, electronic side sliding door anti-pinch cost, and then reduce integral vehicle cost.
Embodiment two
The embodiment of the present invention two provides the anti-clamping method of a kind of automobile door lock, by the step in the embodiment of the present invention one
S102 is optimized for:
Acquisition standard equivalent voltage, calculates cell voltage and the dutycycle of standard equivalent voltage, it is thus achieved that standard dutycycle；
Dutycycle being adjusted to standard dutycycle, the equivalent voltage of the motor that makes to lock is equal to standard equivalent voltage.
Needing to illustrate, standard equivalent voltage is standard dutycycle with the business of cell voltage, at cell voltage liter
Gao Shi, standard dutycycle declines, dutycycle is adjusted to standard dutycycle, and the dutycycle after adjustment is multiplied by cell voltage, then may be used
To obtain the equivalent voltage acting on motor two ends of locking.Owing to the equivalent voltage at motor two ends of locking is stable, then motor of locking
Electric current the most relative with the speed of service stable, do not have due to voltage pulsation cause the speed of service sudden change door lock is caused machinery
Damage, extends the service life of door lock.
By the anti-clamping method of a kind of automobile door lock that the embodiment of the present invention two provides, it is ensured that at different cell voltages
Under motor two ends of locking apply identical equivalent voltage, thus motor movement characteristic of locking in the case of load is constant is the most electric
Stream, speed etc. all keep consistent.
Embodiment three
The embodiment of the present invention three provides the anti-clamping method of a kind of automobile door lock, by the step in the embodiment of the present invention one
S103 is optimized for:
Obtaining the temperature of current environment, the characterisitic parameter of motor of being locked at such a temperature according to this temperature, according to special
Property parameter calculate the lock normal drive current of motor and anti-pinch current threshold.
In conjunction with locking, motor driving equation (1) illustrates, motor driving equation (1) of locking is as follows:
U=I*R+K* ω (1)
Wherein, U is motor both end voltage of locking, and I is motor drive current of locking, and R is motor internal resistance of locking, and K is for locking
Counter electromotive force of motor constant, ω is electric machine rotation angular velocity of locking.
Understand from above-mentioned motor driving equation (1) of locking, even if using software PWM to be controlled, it is ensured that motor of locking
Equivalent voltage stable, the current of electric that makes to lock is consistent, the motor internal resistance but the electric current on motor of locking still can be locked, on
The impact of the rotational angular velocity of lock counter electromotive force of motor constant and motor of locking.
But, it has been investigated that, the rotational angular velocity of motor of locking, lock motor internal resistance and the counter electromotive force of motor of locking
Constant is mainly affected by ambient temperature.The most in embodiments of the present invention, at different ambient temperatures to motor of locking
Normal drive current is tested, and show that electric rear tail gate for automobile, side sliding door are locked motor in the range of normal working temperature
Curve that normal drive current varies with temperature and data, thus by obtaining the temperature of current environment, draw motor of locking
Normal drive current at such a temperature.
In conjunction with locking, motor driving equation (2) illustrates, motor driving equation (2) of locking is as follows:
T=Kt*I (2)
Wherein, T is the output torque of motor of locking, and Kt is the torque constant of motor of locking, and I is that motor of locking drives electricity
Stream.
Understanding from above-mentioned motor driving equation (2) of locking, the driving electric current of motor of locking can react accurately locks
The size of motor output torque, when anti-pinch occurs, the rotating speed of motor of locking is pulled low, by above-mentioned motor driving equation of locking
(1) understanding, in the case of U is constant, the driving electric current I of motor of locking increases, make the driving electric current of the motor of locking after increase with
Motor driving electric current in the case of normal load of locking does difference and processes, and the driving electric current of increase is caused by barrier.By
Gear ratio in motor of locking is fixed, and the driving electric current therefore increased is directly proportional to anti-grip force, the most only needs at different temperatures
With ergometer, fixing anti-grip force is carried out corresponding current value to be marked, i.e. can draw anti-pinch current threshold.
First under different ambient temperatures, the internal resistance to motor of locking, lock counter electromotive force of motor constant and electricity of locking
The rotational angular velocity of machine detects, and calibrates corresponding value, therefore, by obtaining the temperature of current environment, according to this temperature
Degree just can calculate normal drive current and the anti-pinch current threshold of motor of locking.
Such as, when automobile is when temperature is in the environment of 25 DEG C, the characterisitic parameter of motor of locking has certain value, and
During the different tests under temperature environment, the characteristic parameter value of motor of locking all is demarcated and draws.Therefore, only need to obtain
The temperature of current environment, in conjunction with motor driving equation (1) and the motor driving equation (2) of locking of locking, it is possible to calculate electricity of locking
The normal drive current of machine and anti-pinch current threshold.
By the anti-clamping method of a kind of automobile door lock that the embodiment of the present invention three provides, variation of ambient temperature pair can be overcome
The impact of arrangements for automotive doors anti-pinch, and then improve the sensitivity of arrangements for automotive doors anti-pinch.
It should be noted that some electric rear tail gate for automobile currently marketed, side sliding door mostly are twin-lock control, i.e. left and right
A lock it is respectively arranged with on direction.Due to rigging error and electric rear tail gate for automobile, the impact of side sliding door self-deformation, two locks cannot
Accomplish Complete Synchronization.
It is to say, electric rear tail gate for automobile, side sliding door include: the first door lock and the second door lock, and the first door lock and
Two door locks cannot accomplish again Complete Synchronization.
Therefore, when the first door lock starts drive and be judged as anti-pinch, and when the second door lock does not drives, the second door lock not work
Make, and the first door lock is unlocked operation；
When the first door lock and the second door lock all start to drive, when the first door lock or the second door lock are judged as anti-pinch, first
Door lock and the second door lock are all unlocked operation；
When the first door lock is locked complete, and when the second door lock is judged as anti-pinch during driving, the first door lock and second
Door lock is all unlocked operation.
Thus, when the first door lock or the second door lock are judged as anti-pinch, can forbid that another door lock is locked, and first
Lock and the second door lock are all unlocked operation, and then prevent from user is caused extruding.
Embodiment four
The structural representation of the anti-pinch device of a kind of automobile door lock that Fig. 2 provides for the embodiment of the present invention four.
The embodiment of the present invention four provides the anti-pinch device of a kind of automobile door lock, is applied to electric rear tail gate for automobile, sideslip
Door, for performing the anti-clamping method of a kind of automobile door lock that the embodiment of the present invention one provides, as in figure 2 it is shown, this anti-pinch device bag
Include: cell voltage acquisition module 21, adjusting module 22, current threshold acquisition module 23, actual current acquisition module 24, compare mould
Block 25 and judge module 26.
Wherein, cell voltage acquisition module 21, for the cell voltage of acquisition automobile locking motor in real time.
During electric rear tail gate for automobile, side sliding door are locked, cell voltage acquisition module 21 obtains the electricity of motor of locking
Cell voltage.
Adjusting module 22, for according to cell voltage, adjusting the dutycycle of the equivalent voltage of cell voltage and motor of locking,
The equivalent voltage of motor of making to lock is stable.
In the prior art, the commonly used relay of motor-drive circuit of locking drives, when motor of i.e. locking needs to drive
Cell voltage is applied to motor two ends so that it is rotate forward, when needing return, cell voltage is reversely applied to motor two ends of locking,
Make it invert.But cell voltage can change along with the difference of whole vehicle state, therefore motor movement of locking under different operating modes
Characteristic such as electric current, speed etc. all can be different.
In this step, motor-drive circuit of locking can use MOSFET (Metal-Oxide-Semiconductor
Field-Effect Transistor, metal-oxide layer semiconductcor field effect transistor) drive circuit, software uses PWM
(Pulse Width Modulation, pulse width modulation) controls, and therefore adjusting module 22 is applied to, by adjustment, electricity of locking
The dutycycle of machine both end voltage, thus the motor two ends that ensure to lock under different cell voltages apply identical equivalent voltage, because of
And lock in the case of load is constant motor movement characteristic such as electric current, speed etc. all keep consistent.
Current threshold acquisition module 23, for obtaining the temperature of current environment, is just locking motor according to this temperature computation
Often drive electric current and anti-pinch current threshold.
Due to the internal resistance of motor of locking, the rotational angular velocity of lock counter electromotive force of motor constant and motor of locking all can be subject to
The impact of ambient temperature, therefore current threshold acquisition module 23 can be the most electric by the internal resistance of motor of locking, motor of locking
The equivalent voltage of kinetic potential constant and the rotational angular velocity of motor of locking and motor of locking calculates the driven of motor of locking
Electric current and anti-pinch current threshold.
Actual current acquisition module 24, locks the actual current of motor for obtaining current environment.
During electric rear tail gate for automobile, side sliding door are locked, actual current acquisition module 24 obtains driving of motor of locking
Streaming current, namely lock motor in working order under actual current.
Comparison module 25, for comparing difference and the anti-pinch current threshold of actual current and normal drive current.
Judge module 26, for according to comparative result, it may be judged whether anti-pinch.
It is to say, judge module 26 can be according to actual current and the difference of normal drive current and anti-pinch current threshold
Between magnitude relationship, it is judged that draw whether anti-pinch.Concrete, if comparative result is anti-pinch current threshold is less than difference, then prevent
Folder, automobile locking motor stops driving and being unlocked operation；If comparative result is anti-pinch current threshold is more than or equal to difference, then
Not anti-pinch, automobile locking motor continues to drive.
By the anti-pinch device of a kind of automobile door lock that the embodiment of the present invention four provides, it is used for performing the embodiment of the present invention one
The anti-clamping method of a kind of automobile door lock provided, can lock at the self-priming of electric rear tail gate for automobile, side sliding door and be transported by secondary latch position
When moving to one-level lock-bit, can substitute for anti-biting bar and realize the detection of arrangements for automotive doors anti-pinch, reduce electric rear tail gate for automobile, electronic side
Slide anti-pinch cost, and then reduce integral vehicle cost.
In the present invention implements four, adjusting module 22 specifically for:
Acquisition standard equivalent voltage, calculates cell voltage and the dutycycle of standard equivalent voltage, it is thus achieved that standard dutycycle；
Dutycycle being adjusted to standard dutycycle, the equivalent voltage of the motor that makes to lock is equal to standard equivalent voltage.
Needing to illustrate, standard equivalent voltage is standard dutycycle with the business of cell voltage, at cell voltage liter
Gao Shi, standard dutycycle declines, dutycycle is adjusted to standard dutycycle, and the dutycycle after adjustment is multiplied by cell voltage, then may be used
To obtain the equivalent voltage acting on motor two ends of locking.Owing to the equivalent voltage at motor two ends of locking is stable, then motor of locking
Electric current the most relative with the speed of service stable, do not have due to voltage pulsation cause the speed of service sudden change door lock is caused machinery
Damage, extends the service life of door lock.
Therefore, adjustment module 22 can ensure that motor two ends of locking under different cell voltages apply identical equivalent electric
Pressure, thus lock in the case of load is constant motor movement characteristic such as electric current, speed etc. all keep consistent.
In the present invention implements four, current threshold acquisition module 23 specifically for:
Obtaining the temperature of current environment, the characterisitic parameter of motor of being locked at such a temperature according to this temperature, according to special
Property parameter calculate the lock normal drive current of motor and anti-pinch current threshold.
In conjunction with locking, motor driving equation (1) illustrates, motor driving equation (1) of locking is as follows:
U=I*R+K* ω (1)
Wherein, U is motor both end voltage of locking, and I is motor drive current of locking, and R is motor internal resistance of locking, and K is for locking
Counter electromotive force of motor constant, ω is electric machine rotation angular velocity of locking.
Understand from above-mentioned motor driving equation (1) of locking, even if using software PWM to be controlled, it is ensured that motor of locking
Equivalent voltage stable, the current of electric that makes to lock is consistent, the motor internal resistance but the electric current on motor of locking still can be locked, on
The impact of the rotational angular velocity of lock counter electromotive force of motor constant and motor of locking.
But, it has been investigated that, the rotational angular velocity of motor of locking, lock motor internal resistance and the counter electromotive force of motor of locking
Constant is mainly affected by ambient temperature.The most in embodiments of the present invention, at different ambient temperatures to motor of locking
Normal drive current is tested, and show that electric rear tail gate for automobile, side sliding door are locked motor in the range of normal working temperature
Curve that normal drive current varies with temperature and data, thus by obtaining the temperature of current environment, draw motor of locking
Normal drive current at such a temperature.
In conjunction with locking, motor driving equation (2) illustrates, motor driving equation (2) of locking is as follows:
T=Kt*I (2)
Wherein, T is the output torque of motor of locking, and Kt is the torque constant of motor of locking, and I is that motor of locking drives electricity
Stream.
Understanding from above-mentioned motor driving equation (2) of locking, the driving electric current of motor of locking can react accurately locks
The size of motor output torque, when anti-pinch occurs, the rotating speed of motor of locking is pulled low, by above-mentioned motor driving equation of locking
(1) understanding, in the case of U is constant, the driving electric current I of motor of locking increases, make the driving electric current of the motor of locking after increase with
Motor driving electric current in the case of normal load of locking does difference and processes, and the driving electric current of increase is caused by barrier.By
Gear ratio in motor of locking is fixed, and the driving electric current therefore increased is directly proportional to anti-grip force, the most only needs at different temperatures
With ergometer, fixing anti-grip force is carried out corresponding current value to be marked, i.e. can draw anti-pinch current threshold.
First internal resistance, lock counter electromotive force of motor constant and the electricity of locking under different ambient temperatures, to motor of locking
The rotational angular velocity of machine detects, and calibrates corresponding value, and therefore, current threshold acquisition module 23 works as front ring by obtaining
The temperature in border, just can calculate normal drive current and the anti-pinch current threshold of motor of locking according to this temperature.
Such as, when automobile is when temperature is in the environment of 25 DEG C, the characterisitic parameter of motor of locking has certain value, and
During the different tests under temperature environment, the characteristic parameter value of motor of locking all is demarcated and draws.Therefore, only need to obtain
The temperature of current environment, in conjunction with motor driving equation (1) and the motor driving equation (2) of locking of locking, it is possible to calculate electricity of locking
The normal drive current of machine and anti-pinch current threshold.
Current threshold acquisition module 23 can overcome the variation of ambient temperature impact on arrangements for automotive doors anti-pinch, and then improves vapour
The sensitivity of car car door anti-pinch.
It should be noted that some electric rear tail gate for automobile currently marketed, side sliding door mostly are twin-lock control, i.e. left and right
A lock it is respectively arranged with on direction.Due to rigging error and electric rear tail gate for automobile, the impact of side sliding door self-deformation, two locks cannot
Accomplish Complete Synchronization.
It is to say, electric rear tail gate for automobile, side sliding door include: the first door lock and the second door lock, and the first door lock and
Two door locks cannot accomplish again Complete Synchronization.
Therefore this anti-pinch device includes:
Unlocked state 27, for starting drive and be judged as anti-pinch when the first door lock, and when the second door lock does not drives, second
Door lock does not works, and the first door lock is unlocked operation；
When the first door lock and the second door lock all start to drive, when the first door lock or the second door lock are judged as anti-pinch, first
Door lock and the second door lock are all unlocked operation；
When the first door lock is locked complete, and when the second door lock is judged as anti-pinch during driving, the first door lock and second
Door lock is all unlocked operation.
When the first door lock or the second door lock are judged as anti-pinch, unlocked state 27 can forbid that another door lock is locked,
And the first door lock and the second door lock are all unlocked operation, and then prevent from user is caused extruding.
Described above to the disclosed embodiments, makes professional and technical personnel in the field be capable of or uses the present invention.
Multiple amendment to these embodiments will be apparent from for those skilled in the art, as defined herein
General Principle can realize without departing from the spirit or scope of the present invention in other embodiments.Therefore, the present invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and principles disclosed herein and features of novelty phase one
The widest scope caused.
Claims (10)
1. an anti-clamping method for automobile door lock, is applied to electric rear tail gate for automobile, side sliding door, it is characterised in that described anti-pinch
Method includes:
Obtain the cell voltage of automobile locking motor in real time；
According to described cell voltage, adjust the dutycycle of the equivalent voltage of described cell voltage and described motor of locking, make described
The equivalent voltage of motor of locking is stable；
Obtain the temperature of current environment, according to normal drive current and the anti-pinch current threshold of motor of locking described in described temperature computation
Value；
Obtain the actual current of motor of locking described in current environment；
Compare described actual current and the difference of described normal drive current and described anti-pinch current threshold；
According to comparative result, it may be judged whether anti-pinch.
Anti-clamping method the most according to claim 1, it is characterised in that described according to described cell voltage, adjusts described electricity
The dutycycle of the equivalent voltage of cell voltage and described motor of locking, make described in the lock equivalent voltage of motor stable, including:
Acquisition standard equivalent voltage, calculates described cell voltage and the dutycycle of described standard equivalent voltage, it is thus achieved that standard duty
Ratio；
Described dutycycle is adjusted to described standard dutycycle, make described in lock the equivalent voltage of motor equal to the equivalence of described standard
Voltage.
Anti-clamping method the most according to claim 1, it is characterised in that the temperature of described acquisition current environment, according to described
Lock described in temperature computation the normal drive current of motor and anti-pinch current threshold, including:
Obtain the temperature of current environment, according to described temperature obtain at said temperatures described in lock the characterisitic parameter of motor, depend on
Normal drive current and anti-pinch current threshold according to motor of locking described in the calculating of described characterisitic parameter.
Anti-clamping method the most according to claim 1, it is characterised in that described according to comparative result, it may be judged whether anti-pinch, bag
Include:
Stop less than described difference, then anti-pinch, described automobile locking motor if described comparative result is described anti-pinch current threshold
Drive and be unlocked operation；
If described comparative result is that described anti-pinch current threshold is more than or equal to described difference, the most not anti-pinch, described automobile locking electricity
Machine continues to drive.
Anti-clamping method the most according to claim 1, described electric rear tail gate for automobile, side sliding door include: the first door lock and
Two door locks, it is characterised in that including:
When described first door lock starts drive and be judged as anti-pinch, and when described second door lock does not drives, described second door lock is not
Work, and described first door lock is unlocked operation；
When described first door lock and described second door lock all start to drive, described first door lock or described second door lock are judged as
During anti-pinch, described first door lock and described second door lock are all unlocked operation；
When described first door lock is locked complete, and when described second door lock is judged as anti-pinch during driving, described first
Lock and described second door lock are all unlocked operation.
6. an anti-pinch device for automobile door lock, is applied to electric rear tail gate for automobile, side sliding door, it is characterised in that described anti-pinch
Device includes:
Cell voltage acquisition module, for the cell voltage of acquisition automobile locking motor in real time；
Adjusting module, for according to described cell voltage, adjusts the equivalent voltage of described cell voltage and described motor of locking
Dutycycle, make described in the lock equivalent voltage of motor stable；
Current threshold acquisition module, for obtaining the temperature of current environment, is just locking motor according to described in described temperature computation
Often drive electric current and anti-pinch current threshold；
Actual current acquisition module, for obtaining the actual current of motor of locking described in current environment；
Comparison module, for comparing the difference of described actual current and described normal drive current and described anti-pinch current threshold；
Judge module, for according to comparative result, it may be judged whether anti-pinch.
Anti-pinch device the most according to claim 6, it is characterised in that described adjusting module specifically for:
Acquisition standard equivalent voltage, calculates described cell voltage and the dutycycle of described standard equivalent voltage, it is thus achieved that standard duty
Ratio；
Described dutycycle is adjusted to described standard dutycycle, make described in lock the equivalent voltage of motor equal to the equivalence of described standard
Voltage.
Anti-pinch device the most according to claim 6, it is characterised in that described current threshold acquisition module specifically for:
Obtain the temperature of current environment, according to described temperature obtain at said temperatures described in lock the characterisitic parameter of motor, depend on
Normal drive current and anti-pinch current threshold according to motor of locking described in the calculating of described characterisitic parameter.
Anti-pinch device the most according to claim 6, it is characterised in that described judge module specifically for:
Stop less than described difference, then anti-pinch, described automobile locking motor if described comparative result is described anti-pinch current threshold
Drive and be unlocked operation；
If described comparative result is that described anti-pinch current threshold is more than or equal to described difference, the most not anti-pinch, described automobile locking electricity
Machine continues to drive.
Anti-pinch device the most according to claim 6, described electric rear tail gate for automobile, side sliding door include: the first door lock and institute
State the second door lock, it is characterised in that described anti-pinch device includes:
Unlocked state, for starting drive and be judged as anti-pinch when described first door lock, and when described second door lock does not drives, institute
State the second door lock not work, and described first door lock is unlocked operation；
When described first door lock and described second door lock all start to drive, described first door lock or described second door lock are judged as
During anti-pinch, described first door lock and described second door lock are all unlocked operation；
When described first door lock is locked complete, and when described second door lock is judged as anti-pinch during driving, described first
Lock and described second door lock are all unlocked operation.
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| CN201610971869.XA CN106285281B (en) | 2016-10-28 | 2016-10-28 | The anti-clamping method and device of a kind of automobile door lock |
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| CN201610971869.XA CN106285281B (en) | 2016-10-28 | 2016-10-28 | The anti-clamping method and device of a kind of automobile door lock |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107558831A (en) * | 2017-07-18 | 2018-01-09 | 重庆海德世拉索***（集团）有限公司 | The control method and circuit of motorcar electric tailgate door-lock motor |
| CN110303998A (en) * | 2019-06-28 | 2019-10-08 | 大陆汽车电子(长春)有限公司 | The anti-pinch temperature-compensation method and electronic control unit of equipment are closed on vehicle |
| CN111058721A (en) * | 2019-11-13 | 2020-04-24 | 中国第一汽车股份有限公司 | Automobile tail gate control method and system, vehicle and storage medium |
| CN111706200A (en) * | 2020-05-29 | 2020-09-25 | 东风汽车有限公司 | Anti-pinch control method for electric suction door and electronic equipment |
| CN111997471A (en) * | 2020-09-02 | 2020-11-27 | 北京经纬恒润科技有限公司 | Anti-pinch detection method and device for vehicle body closing system |
| CN112832601A (en) * | 2021-01-06 | 2021-05-25 | 上海科世达-华阳汽车电器有限公司 | Door handle anti-pinch method, device, equipment and computer readable storage medium |
| CN113037145A (en) * | 2020-12-23 | 2021-06-25 | 盛视科技股份有限公司 | Electric door blocking judgment method and system |
| CN114251024A (en) * | 2021-12-21 | 2022-03-29 | 恩坦华汽车零部件（镇江）有限公司 | PWM control-introduced self-closing automobile back door lock |
| CN117558077A (en) * | 2024-01-10 | 2024-02-13 | 深圳市每开创新科技有限公司 | Parameter adjustment method of electronic lock, storage medium and terminal device |
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| CN111997471B (en) * | 2020-09-02 | 2022-03-15 | 北京经纬恒润科技股份有限公司 | Anti-pinch detection method and device for vehicle body closing system |
| CN113037145A (en) * | 2020-12-23 | 2021-06-25 | 盛视科技股份有限公司 | Electric door blocking judgment method and system |
| CN112832601A (en) * | 2021-01-06 | 2021-05-25 | 上海科世达-华阳汽车电器有限公司 | Door handle anti-pinch method, device, equipment and computer readable storage medium |
| CN114251024A (en) * | 2021-12-21 | 2022-03-29 | 恩坦华汽车零部件（镇江）有限公司 | PWM control-introduced self-closing automobile back door lock |
| CN117558077A (en) * | 2024-01-10 | 2024-02-13 | 深圳市每开创新科技有限公司 | Parameter adjustment method of electronic lock, storage medium and terminal device |
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Address after: 4 / F, building 1, No.14 Jiuxianqiao Road, Chaoyang District, Beijing 100020 Patentee after: Beijing Jingwei Hirain Technologies Co.,Inc. Address before: 8 / F, block B, No. 11, Anxiang Beili, Chaoyang District, Beijing 100101 Patentee before: Beijing Jingwei HiRain Technologies Co.,Ltd. |