Method for controlling motor vehicle door or motor vehicle door

Abstract

The invention relates to a method for controlling a motor vehicle door or a motor vehicle door and a corresponding device. For this purpose, a drive device (11) is provided for a door leaf (2) of a motor vehicle door or a motor vehicle door, said door leaf being movable relative to a motor vehicle body (1). Furthermore, sensors (9, 10) for detecting a single or a plurality of static and / or dynamic parameters of the door leaf (2) and a self-learning control unit (8) for evaluating the values of the sensors (9, 10) are provided. According to the invention, the control unit (8) evaluates parameters of the door leaf (2) for user identification.

Description

Technical Field

[0001] The present invention relates to a method for controlling a motor vehicle door or a motor vehicle hatch, wherein the motor vehicle door or the motor vehicle hatch has a drive device for a door leaf of the motor vehicle door or the motor vehicle hatch that can move relative to the motor vehicle body, and the motor vehicle door or the motor vehicle hatch also has at least one sensor for acquiring single or multiple static parameters and / or dynamic parameters of the door leaf and a self-learning control unit for evaluating the values ​​of the sensor. Background Art

[0002] The control of motor vehicle doors or motor vehicle hatches, such as motor vehicle side doors, motor vehicle tailgates or motor vehicle hoods, is now usually performed completely or partially with the aid of a motor vehicle. For this purpose, a drive for an associated door leaf that is movable relative to the motor vehicle body is provided as an actuating element of the motor vehicle door or motor vehicle hatch. The door leaf can be a side door leaf, a tailgate leaf or a hood. In principle, other doors or door leaves are also conceivable, such as cargo compartment doors, sliding doors, etc.

[0003] The aforementioned drive for the movable door leaf can be used here not only in connection with the opening movement of the relevant door leaf, but also in connection with the closing movement, or in connection with the opening and closing movement of the door leaf. However, in both cases, i.e. during the opening process and during the closing process, the vehicle user has the habit of assisting the aforementioned movement of the door leaf or at least initiating said movement of the door leaf. Therefore, the entire required drive energy is not required for the drive for the door leaf, but only part of it. This ultimately depends on how the specific vehicle user acts on the door leaf.

[0004] With regard to the control and monitoring of passenger door systems, for example by using a self-learning routine, a method is already known in the prior art according to DE 10 2015 014 802 A1. This allows the opening and closing cycles to be adjusted to the ideal opening and closing cycles taking into account a characteristic curve family that is dependent on environmental parameters. In this way, reliable and comfortable operation can be provided under a wide range of different environmental conditions. However, the possible adjustments are not user-specific.

[0005] The general prior art according to DE 10 2006 057 679 B4 relates to a device for locking a driven, movable component, in particular a tailgate or door of a motor vehicle. For this purpose, a first detection device is designed to emit a signal about the locking state of the component. As a component of the closing device, a distance measurement is performed by means of a second detection device. In addition, a self-learning control is implemented. In fact, it is possible to check for a plurality of closing processes: from these closing processes, an average value of the delay time is derived. As a result, the delay time can be changed dynamically, for example depending on the seasonal ambient temperature. There is also no possible adjustment according to the user. Summary of the invention

[0006] The invention is based on the technical problem of further developing this method in such a way that conclusions can be drawn about the user and his actions on the door leaf of a motor vehicle door or a motor vehicle hatch and these can be utilized.

[0007] In order to solve this technical problem, a generic method for controlling a motor vehicle door or a motor vehicle hatch within the scope of the invention is characterized in that a control unit evaluates parameters of the door leaf for user recognition.

[0008] The control unit usually first evaluates dynamic parameters of the door leaf for user identification. These dynamic parameters of the door leaf are, for example, the time curve of the door leaf movement. This can be one or all of the displacement-time curve, the velocity-time curve, the acceleration-time curve, etc. According to the invention, these dynamic parameters of the door leaf are evaluated for user identification.

[0009] That is, depending on the action that a user exerts on the door leaf during, for example, the opening and / or closing process, a specific, user-specific displacement-time curve of the door leaf during the closing or opening movement of the door leaf, and thus a velocity-time curve and an acceleration-time curve, can be derived and derived for this user. This specific time curve of the user is then evaluated for user identification and taken into account by the control unit. As a result, the control unit can not only perform a specific user identification based on the relevant time curve, but in principle can also distinguish between different users based on the time curve. In this case, averaging can of course be performed for increased accuracy and better distinguishability. For example, it is conceivable that first five or ten (or another number) corresponding time curves are evaluated when the user exerts an action on the door leaf of a motor vehicle door, and then the characteristic curve of the time curve is stored in the control unit as a user identification (curve). For further identification and user identification, signals from upstream identity authentication can of course also be taken into account.

[0010] In summary, the control unit can perform the user identification realized according to the invention on the basis of the dynamic parameters of the door leaf and evaluate the aforementioned parameters of the door leaf for the purpose of user identification. As a result of this user identification, the control unit can then recalibrate the drive for acting on the door leaf. For example, if the user acts particularly "forcefully" on the aforementioned door leaf during the opening and / or closing process, this can be converted and interpreted by the control unit as follows, i.e., not only the user is identified, but also the drive undergoes the desired recalibration based on this user identification. In the example case, this means reducing the power applied by the door leaf drive to the door leaf.

[0011] If, however, the user only "hesitantly" acts on the door leaf, the drive is adjusted and optionally recalibrated as a function of the user recognition performed in such a way that the drive is almost solely responsible for the door leaf movement.

[0012] Furthermore, it is additionally or alternatively possible for the control unit to take into account static parameters of the door leaf, for example in the form of the door leaf mass. Such static parameters can be stored in the control unit, for example, by the manufacturer. Thus, when controlling the drive, the control unit takes into account not only the specific action exerted by the user on the door leaf in terms of user recognition, but also the mass of the door leaf.

[0013] Furthermore, other parameters of the door leaf can also be taken into account. For example, it is conceivable that the door leaf or its movement depends not only on the action exerted by the user, the aforementioned door leaf mass, but also on the friction of the door leaf relative to the support on the vehicle body. Ideally, the control unit can then distinguish between these different influencing factors, namely the user, the door leaf mass and finally also the friction of the door leaf in the support or in the supports. This distinction can be made based on the movement of the door leaf, whereby additional and known door leaf mass values ​​can also be taken into account as appropriate.

[0014] User identification is therefore usually carried out based on the time curve of the movement, for example based on the maximum speed that can be achieved by the user acting on the door leaf, the speed curve and the change in the door leaf speed over time. In contrast, the influence of the friction between the door leaf and the body on the aforementioned movement process is largely static, resulting in a more or less attenuation of the door leaf speed. The same is true for the mass. In addition, a current sensor on the drive device can also be used to obtain static parameters of the door leaf, such as friction and mass. With the help of this current sensor, the current intensity consumed by the drive device is determined, which current intensity is a measure of the energy consumed by the drive device for the movement of the door leaf. Therefore, from the value of the current sensor, it is possible to infer an increase in the mass of the door leaf and an increase or decrease in the friction of the door leaf relative to the vehicle body in the support.

[0015] In contrast, the rotation angle sensor is mainly used to acquire the dynamic parameters of the door leaf, i.e. to record the movement process in the form of a displacement-time curve, for example, and to be able to analyze it. All these values, i.e. the dynamic movement process of the door leaf as a result of user recognition, the mass of the door leaf and possible static parameters in the form of friction with the vehicle body in the support, are then converted and utilized as a whole by the control unit, so that the control unit recalibrates the drive device for exerting an action on the door leaf according to the sensor values ​​for exerting an action on the door leaf. In fact, both the values ​​of the current sensor and the values ​​of the rotation angle sensor are usually used here.

[0016] Furthermore, the control unit usually specifies different operating states as a function of the values ​​of the aforementioned sensors. This means that, for example, a distinction can be made between normal operation, load operation or even overload operation. Normal operation corresponds to the situation in which the control unit applies a force to the drive device for acting on the door leaf, so that the drive device takes into account the user identification and the acquired mass and friction, and also has the drive power required for this purpose. In load operation, the control unit ensures, for example, that the drive power of the drive device is increased, which, for example, takes into account or can take into account, for example, an increase in the friction of the door leaf relative to the vehicle body. Finally, overload operation corresponds to the situation in which the friction and / or the mass of the door leaf have increased to such an extent that the rated drive power of the drive device is no longer sufficient to move the door leaf. In this case, no control of the drive device by the control unit is caused, but, for example, a fault message is issued or an overload operation is displayed.

[0017] The invention also relates to a device which is particularly suitable for implementing the method. Thus, a method and a device are described, with the aid of which user identification can be carried out in particular. To this end, the control unit generally carries out the aforementioned user identification as a function of the time-dependent values ​​of the sensors. In addition to the user identification as a result of the acquired dynamic parameters of the door leaf, the control unit generally also takes into account static parameters of the door leaf in the form of the mass of the door leaf or the friction with the vehicle body in one or more bearings. As a result, the drive for applying action to the door leaf can be recalibrated or the energy required for the drive can ultimately be adjusted accordingly. All of this is achieved by a learning process of the control unit based on the dynamic and static parameters of the door leaf. For example, the corresponding recalibration can be carried out and implemented by a routine using, for example, artificial intelligence.

[0018] All this is achieved without the need for calibration, for example at the end of production. Furthermore, the calibration carried out during operation in the example case takes into account any changes in the movement of the door leaf, including with regard to the friction conditions observed. This provides an overall high-quality tactile operation of the door leaf, which can be achieved particularly painstakingly and easily. This is a major advantage. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The invention is explained in more detail below with reference to the accompanying drawings which show only one embodiment; in which:

[0020] Figure 1 A schematic diagram showing a device according to the invention for controlling a motor vehicle door or a motor vehicle hatch,

[0021] Figure 2A Shows the movement of the relevant door leaf in the form of a speed-time diagram,

[0022] Figure 2B Schematic diagram showing the current consumed by the drive device as a function of time. DETAILED DESCRIPTION

[0023] The drawing shows a device for controlling a motor vehicle door or a motor vehicle hatch. According to this embodiment, the device is a device for controlling a motor vehicle side door. For this purpose, the motor vehicle side door has a door leaf 2 that can be moved relative to the motor vehicle body 1. For this purpose, the motor vehicle door or the door leaf 2 of the motor vehicle side door is equipped with a motor vehicle lock 3, for which a locking mechanism 4, 5 is only schematically shown, including a bolt / ratchet 4 and a pawl / pawl 5 interacting therewith. The motor vehicle lock 3 or its locking mechanism 4, 5 interacts with a lock holder or lock bow 6 on the body side. As soon as the motor vehicle lock 3 is in the closed state relative to the motor vehicle body and therefore also relative to the door leaf 2 of the motor vehicle door, this is detected by at least one sensor 7 assigned to the locking mechanism 4, 5 and transmitted to a control unit 8, which receives the signals from the sensor 7 and evaluates these signals. In addition, further sensors 9, 10 are also implemented.

[0024] In fact, a rotation angle sensor 9 and a current sensor 10 can be seen. In the example shown, the current I consumed by the drive 11 of the door leaf 2 can be measured by means of the current sensor 10. The rotation angle sensor 9 can be used to determine the angle α through which the door leaf 2 is rotated relative to the vehicle body 1.

[0025] The sensor 9, 10 or the two sensors 9, 10 are used to acquire one or more static parameters and / or dynamic parameters of the door leaf 2. The control unit 8 then evaluates the values ​​of the sensors 9, 10 or the rotation angle sensor 9 and the current sensor 10. According to the invention, the aforementioned signals of the sensors 9, 10 and thus the parameters of the door leaf 2 are evaluated by the control unit 8 for the purpose of user identification.

[0026] For this purpose, refer to Figure 2A, which shows the movement process of the door leaf 2, specifically showing two different curves of the speed v of the door leaf 2 changing with time. The two speed curves show the speed v of the door leaf 2 starting from the origin 0 and changing differently with time t. After time t1, the drive device 11 for the door leaf 2 can assist the closing movement of the door leaf 2 shown at this point. This means that at Figure 2A In the example shown, the door leaf 2 is closed manually and electrically. The time t2 then corresponds to the closed state of the door leaf 2, which is indicated by the closed state of the associated motor vehicle lock 3. The sensor 7 reports this closed state to the control unit 8.

[0027] exist Figure 2A The speed threshold v is also shown in s The first type of user corresponding to the lower curve (dotted line) does not exceed the speed threshold, but the second type of user corresponding to the upper curve (solid line) exceeds the speed threshold. Therefore, for example, the driving device 11 can be used when the speed curve is below the threshold v s In the first user case, the closing movement of the door leaf 2 is assisted, while above the threshold value v s In the second user case, the closing movement of the door leaf 2 is not additionally assisted electrically. Of course, the threshold value v s It can be variably and displaceably predefined by the control unit 8 .

[0028] Figure 2A The speed-time curve v(t) in the figure finally shows the signal of the rotation angle sensor 9, while Figure 2B The current-time curve I(t) in FIG. 1 finally shows the value of the current sensor 10 . In this case, the time t1 corresponds to the situation at which the current I consumed by the drive 11 begins to increase and reaches a maximum value at the time t2 . In other words, in this case, the door leaf 2 has reached its closed state relative to the vehicle body 1 . This closed state is again detected by the sensor 7 inside the vehicle lock 3 and reported to the control unit 8 .

[0029] According to the invention, the control unit 8 can now evaluate parameters of the door leaf 2, namely dynamic parameters of the door leaf 2, namely its Figure 2A , as well as the static parameters of the door leaf 2, thus its mass and possible friction relative to the motor vehicle body 1. In order to identify the user, the control unit 8 evaluates the dynamic parameters of the door leaf 2, such as from Figure 2AIn fact, the respective user generates a specific movement curve over time or a specific movement process over time, which is shown and presented here with the aid of the speed-time curve v(t). The control unit 8 can thus distinguish between different users. As a result, the control unit 8 "knows" that when the first type of user corresponding to the lower (dash-dotted line) speed curve manipulates the door leaf 2, the drive device 11 must intervene to provide assistance, while for the second type of user corresponding to the higher (solid line) speed curve, no or almost no additional assistance is required. In addition, the control unit 8 can take into account static parameters in the form of the mass of the door leaf 2. The current sensor 10 can provide information in this regard as well as information about possible friction forces in the support between the door leaf 2 and the motor vehicle body 1. In fact, the support is shown here as a schematic point, to which the drive device 11 for the door leaf 2 acts.

[0030] A possible increase in the mass of the door leaf 2 and / or the friction of the door leaf in the bearing relative to the motor vehicle body 1 leads to an increase in the current intensity I measured by the current sensor 10 and received by the drive device 11, as shown in FIG. Figure 2B Schematically shown. In fact, two different operating states are shown here. One operating state, which is associated with the dashed curve of the current intensity I, corresponds to normal operation, while the solid curve of the current intensity I over time t corresponds to load operation. In this load operation, in the example case, the drive device 11 is supplied with the maximum possible current intensity. If a higher current intensity is still required to be applied to the drive device 11, for example due to increased friction, so-called overload operation is observed, which is considered to exceed Figure 2B The current intensity I s This overload operation corresponds to a situation where the control unit 8 does not use the drive device 11 to act on the door leaf 2.

[0031] In other words, the control unit 8 takes into account static parameters of the door leaf 2 in the form of the door leaf mass or the friction of the door leaf relative to the motor vehicle body 1. The corresponding values ​​are acquired using a current sensor 10, which is arranged on the drive device 11 for acquiring the static parameters of the door leaf 2. As a result of these measurements, the control unit 8 ensures that the drive device 11 is recalibrated for applying an action on the door leaf 2 as a function of the values ​​of the sensors 9, 10.

[0032] For example, if the friction between the door leaf 2 and the vehicle body 1 increases, this corresponds to Figure 2B In the case of a load operation as shown in the solid line in the figure, the control unit 8 allows the current consumption of the drive device 11 to increase accordingly and ensures that the drive device 11 and its loading action are recalibrated accordingly. Figure 2BThe different operating states are shown, such as normal operation (dashed line), load operation (solid line), and finally exceeding the threshold I s Overload operation.

[0033] Reference numerals list

[0034] 1 Motor vehicle body

[0035] 2 doors

[0036] 3 Motor vehicle locks

[0037] 4.5 Locking mechanism

[0038] 6 Lock Bow

[0039] 7 Sensors

[0040] 8 Control unit

[0041] 9 Angle sensor

[0042] 10 Current sensor

[0043] 9.10 Sensors

[0044] 11. Drive device

[0045] Speed

[0046] v s Speed ​​threshold

[0047] v(t) velocity-time curve

[0048] t, t1, t2, I(t) time

[0049] i Current

[0050] I.I s Current intensity

Claims

1. A method for controlling a motor vehicle door or a motor vehicle hatch, the motor vehicle door or motor vehicle hatch having a drive (11) for a door leaf (2) of the motor vehicle door or motor vehicle hatch that can be moved relative to a motor vehicle body (1), the motor vehicle door or motor vehicle hatch also having at least one sensor (9, 10) for detecting single or multiple static parameters and / or dynamic parameters of the door leaf (2), the motor vehicle door or motor vehicle hatch also having a self-learning control unit (8) for evaluating the values ​​of the sensors (9, 10), It is characterized in that The control unit (8) evaluates parameters of the door leaf (2) for user identification.

2. The method according to claim 1, characterized in that The control unit (8) evaluates dynamic parameters of the door leaf (2) for user identification.

3. The method according to claim 1 or 2, characterized in that: The control unit (8) obtains the parameters of the door leaf from the motion curve of the door leaf (2), such as a displacement-time curve, a speed-time curve, an acceleration-time curve, etc.

4. The method according to any one of claims 1 to 3, characterized in that The control unit (8) takes into account static parameters of the door leaf (2) in the form of the mass of the door leaf and / or the friction of the door leaf.

5. The method according to any one of claims 1 to 4, characterized in that A rotation angle sensor (9) is provided for acquiring dynamic parameters of the door leaf (2).

6. The method according to any one of claims 1 to 5, characterized in that The current sensor (10) is arranged on the driving device (11) to obtain static parameters of the door leaf (2).

7. The method according to any one of claims 1 to 6, characterized in that The control unit (8) recalibrates the drive device (11) for acting on the door leaf (2) as a function of the values ​​of the sensors (9, 10).

8. The method according to any one of claims 1 to 7, characterized in that The control unit (8) specifies different operating states, such as normal operation, load operation or overload operation, according to the values ​​of the sensors (9, 10).

9. The method according to any one of claims 1 to 8, characterized in that The control unit (8) performs user identification based on the time-dependent values ​​of the sensors (9, 10).

10. A device for controlling a motor vehicle door or a motor vehicle hatch, in particular for carrying out a method according to any one of claims 1 to 9, the device comprising a drive (11) for a door leaf (2) of the motor vehicle door or motor vehicle hatch which is movable relative to the motor vehicle body (1), at least one sensor (9, 10) for detecting single or multiple static and / or dynamic parameters of the door leaf (2), and a self-learning control unit (8) for evaluating the values ​​of the sensors (9, 10), It is characterized in that The control unit (8) evaluates parameters of the door leaf (2) for identifying the user.

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