`
`
`
`GEQTEXT
`Translations, Inc.
`
`55
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`
`)
`
`STATE OF NEW YORK
`
`COUNTY OF NEW YORK
`
`CERTIFICATION
`
`This is to certify that the attached translation is, to the best of my knowledge and belief, a true
`
`and accurate translation from German into English of the attached Published Patent Application
`
`No. P 40 00 730.8, dated August 1, 1991.
`
`
`
`Ken Hetzel, Project Manager
`Geotext Translations, Inc; "
`
`Sworn to and subscribed before me
`
`thisC ( M day of AW”
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`MORGEN MvRDAL
`NOTARY PUBLIC-STATE OF NEW YORK
`No. 01MY6274933
`d in Kings COW?
`Quollfle
`My Commission Expires “Wary 14‘ 20!
`
`New York 259 West 30th Street, 17th Floor, New York, NY 10001, USA tel +1 212.631.7432 fax +1.212.631.7778
`San Francisco 220 Montgomery Street Ste. 438, San Francisco CA 94104 U.S.A tel +1.415.576.9500 fax +1.415.520.0525
`\Nsshington 1025 Connecticut Avenue, Suite 1000, Washington, DC 20036, U.S.A. Tel +1.202.828.1267 Fax +1.202.828.1271
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`Hong Kong 20th Floor, Central Tower, 28 Queen’s Road, Central, Hong Kong tel +852.2159.9143 fax +852.3010.0082
`
`translationsemeotex“toil
`
`l VVV\/V\/.geO’C‘SXT.C/Webasto Roof Systems, Inc.
`Exhibit 1018
`
`1
`
`Webasto Roof Systems, Inc.
`Exhibit 1018
`
`

`

`(19) FEDERAL REPUBLIC (12) Published Patent Application
`OF GERMANY
`.,
`(10)DE 40 00 730A1
`
`(5011113 C151
`F 16 P 3/12
`GOSB9/02 H
`<
`
`11111111111111111111111111111111111111111111111111
`
`
`
`a
`1;
`2
`"H
`
`G
`
`GE
`
`PATENT
`OFFICE
`
`(21) Application number: P 40 00 730.8
`(22) Filing date: 01/12/1990
`(43) Date ofPublication. 08/01/1991
`
`(71) Applicant:
`
`Robert Bosch GmbH, 7000 Stuttgart, DE;
`Reitter & Schefenacker KG, 73 00 Esslingen,
`DE; Domatic GmbH, 7034 Gaertringen, DE
`
`(72) lnventors:
`
`Lamm, Hubert, 7594 Kappelrodeck, DE;
`Kiefer, Stefan 7601 Ortenberg, DE; Knecht,
`Gerhard, 7557 Iffezheim, DE; Mau, Gert, 7042
`Aidlingen, DE; Zottmaier, Rainer, Dr., 7300
`Esslingen, DE
`
`
`
`___—_L
`Examination application has been submitted per PatG [Patentgesetz — German Patent Act] § 44
`
`(54) Method and device for operating power-actuated components which pose a clamping hazard
`
`(57) The invention relates to a method and a device
`for operating power-actuated components which
`pose a clamping hazard to objects or body parts of
`people, wherein at
`least one derivative of a
`parameter is determined with respect to the path
`traveled by the component, said parameter having a
`relation to the force of actuation of the component.
`If at
`least one threshold value is exceeded,
`the
`device is switched off or the direction of movement
`
`is reversed.
`
`DE4000730Al
`
`FEDERAL PRINTING OFFICE 06.91 108 31/12
`
`10/50
`
`2
`
`Webasto Roof Systems, Inc.
`Exhibit 101 8
`
`2
`
`Webasto Roof Systems, Inc.
`Exhibit 1018
`
`

`

`DE 40 00 730 Al
`
`2
`
`l
`
`Description
`
`Prior art
`
`The invention relates to a method and device for
`
`components which
`power—actuated
`operating
`clamping hazard to objects or body parts ofpeople.
`A method for the electronic monitoring of opening and
`closing processes of electrically—operated window lift motors
`and sunroofs in vehicles is known from DE-PS 30 34 118.
`
`pose
`
`a
`
`The path traveled by the moving component during the
`opening and closing process is divided into multiple regions.
`In a first and third region, the electric motor is switched off
`as soon as a time limit is reached when a blocking state
`arises, wherein the same is determined by a detection of the
`rotary speed of the drive. In a second region, measured
`values which are dependent on the rotary speed or on the
`speed of the moving component, or of the drive motor, are
`continuously determined during the closing process, and
`compared to a threshold value related to an initial measured
`value at start. If the threshold is exceeded, the drive direction
`of the electric motor is briefly reversed, and then the drive is
`switched off. The path traveled by the moving component is
`determined by integration of a rotary speed signal in a device
`which processes signals.
`The invention addresses the problem of providing a
`method and device for the operation of power—actuated
`components,
`to reliably detect the clamping of objects or
`persons by the component in all operating conditions, and to
`immediately initiate counter measures.
`
`Advantages of the invention
`
`in the method and the device according to the invention,
`first a parameter is detected which has a relation to the
`actuating force of the component, and of the path traveled by
`the component. Next, at least one derivative of the profile of
`the parameter with respect
`to the path of travel
`is
`determined. The term ‘derivative’ means the determination
`of the differential quotient using analog calculations, and the
`determination of
`a difference quotient using digital
`calculation. If a threshold value is exceeded which is pre-
`specified for the result of the at least one derivative, this
`leads to the component being switched off and/or to the
`reversal of the direction of movement.
`
`The determination of the first derivative is enough to
`allow the recognition of a clamping occurrence with high
`reliability. The additional or alternative determination of
`higher derivatives, preferably at
`least of the
`second
`derivative, further increases the detection reliability, because
`changes influence the result more strongly than in the first
`derivative. If more than one derivative is determined, then
`each result is compared to its own threshold value, wherein
`the threshold values can be different. The component
`is
`switched off, or
`the direction of movement
`thereof is
`reversed, if at least one threshold value is exceeded. The
`method and the device according to the invention have the
`advantage that the speed of the actuated component need not
`be taken into account. The speed of the component can
`therefore change within wide boundaries over the complete
`
`path of travel, as long as the result of at least one derivative
`does not exceed the pre-specified threshold.
`The method and the device according to the invention
`are suitable for the operation of sliding doors and other
`stationary, power-actuated
`components which pose
`a
`clamping hazard to objects or body parts of people. [They
`are] particularly suitable for
`the operation of sliding
`sunroofs, window lift motors, door closing mechanisms, and
`seatbelt positioning devices
`in
`vehicles.
`[They
`are]
`particularly advantageous when used for power—actuated
`hand tool machines in assembly processes.
`[They are]
`further suitable for the operation of rolling shutters and
`access gates, and particularly parking spot placeholder
`devices.
`
`Implementations and improvements of the method and
`of the device according to the invention are found in the
`dependent
`claims.
`In
`cases where more
`than
`one
`derivativewfor
`example the first
`and the secondv—is
`calculated, there is a simplification resulting from combining
`the results of the derivatives, and subsequently comparing
`[the combined results] to a threshold value. A combination
`of the results can be performed, by way of example, by
`addition, wherein the sum is compared to the threshold
`value.
`
`In one particularly advantageous implementation of the
`method and of the device according to the invention,
`multiple determinations are made of at least one derivative,
`with respect to different paths of travel.
`lt is possible to
`make an adjustment by means of this measure for different
`objects or body parts of people, wherein the invention aims
`to prevent the clamping of the same. The differing density of
`objects or body parts leads to hard or correspondingly soft
`clamping processes which are revealed by different changes
`in the parameters with respect
`to the path of travel. A
`determination set
`for a hard clamping of at
`least one
`derivative would,
`for example, not
`recognize
`a
`soft
`clamping.
`,Thus,
`in further development,
`the start of the
`clamping of various objects will beable to be identified as
`quickly as possible.
`In each case, calculating the first
`derivatives is already sufficient. It is possible here as well to
`increase the reliability of detection by determining higher
`derivatives—preferably the first and second derivative. The
`results of the multiple calculations of the derivatives running
`in parallel are each compared to a threshold value. If the first
`and/or higher derivatives are likewise determined, separate
`threshold values are provided for these results as well.
`In implementations of the method where different
`derivatives are determined, a combination of the first and/or
`higher derivatives
`is possible as well,
`along with a
`subsequent comparison to a single threshold value. As such,
`for
`the calculations running in parallel, only as many
`threshold values need be provided as calculations are carried
`out.
`
`the threshold values are
`In one practical embodiment,
`determined adaptively by means of clamping tests. With this
`measure,
`it
`is possible to pre—specify optimum threshold
`values of each individual component.
`A further improvement of the method and of the device
`according to the invention relates to a division of the entire
`path of travel of the component into multiple subregions,
`wherein a threshold value is assigned to each of the same.
`
`Webasto Roof Systems, Inc.
`Exhibit 1018
`
`3
`
`Webasto Roof Systems, Inc.
`Exhibit 1018
`
`

`

`3
`
`DE 40 00 730 A1
`
`4
`
`the
`enables
`subregions
`into multiple
`division
`The
`incorporation of different dimensions of objects or body
`parts of people.
`A signal filter during the detection of the profile of the
`parameter increases the reliability of the method and of the
`device in the presence of mechanical
`influences on the
`component, such as shaking and the resulting high-frequency
`interference signal components, by way of example. High-
`frequency interference signals would have an effect in the
`determination of higher derivatives, and potentially falsify
`the appearance of a clamping occurrence.
`The method according to the invention can be realized in
`a particularly simple manner if the rotary speed of the drive
`of the component is used as the parameter, and is detected by
`a sensor. The path traveled by the component can then be
`calculated in a simple manner by means of integration of the
`rotary speed signals.
`A further improvement of the method and the device
`according to the invention is possible by pre-specifying a
`minimum rotary speed, wherein the component is switched
`off or the direction of movement thereof is reversed if the
`
`rotary speed drops below this minimum speed. The
`additional monitoring of a minimum rotary speed also rules
`out [sic] the prevention of the clamping of objects or body
`parts of people when the determination of at
`least one
`derivative is no longer possible because the rotary speed is
`too low to make it possible to detect a significant change.
`A simple realization of the component is possible with
`an electric motor drive.
`
`In one particularly advantageous implementation of the
`method and of the device according to the invention, where
`an electric motor drive is used, the detected rotary speed is
`corrected according to the operating voltage. A change in the
`rotary speed can be caused both by a clamping and by a
`change in the operating voltage, wherein it would not be
`possible to differentiate between both causes in a signal-
`processing device without the corresponding correction of
`the detected rotary speed according to the operating voltage,
`with no other input. This correction is particularly simple
`when a direct current motor drive is used, because a change
`in the operating voltage results in a parallel shift of the linear
`rotary speed — rotary torque characteristic curve in the region
`of interest, where the increase in the rotary speed in the
`working range being observed has a linear relationship to the
`change in the operating voltage. The correction value is then
`dependent on the measured voltage which is multiplied by a
`constant value.
`Additional details and advantageous embodiments of the
`method and of the device according to the invention are
`found in additional dependent claims in combination with
`the following description.
`
`Figures
`
`Fig. 1 shows a block diagram of a drive of a power—
`actuated component,
`and Fig.
`2
`shows
`a
`functional
`relationship between rotary speed and rotary torque of a
`direct current electric motor at different operating voltages.
`Fig. 1 shows an electric motor 10 which is controlled by
`a signal-processing device 11 via a motor driver circuit 12.
`A sensor 13 detects the rotary speed of the motor 10 and
`relays the same to the signal~processing device 11. The
`
`device 11 is given commands for the control of the motor 10
`via an operating device 14. In addition, the device 11 can
`give signals to the operating device 14, and these are then
`displayed by the same, for example. As a further input
`variable,
`the operating voltage of the electric motor 10,
`detected by a voltage meter 15,
`is fed to the device 11,
`wherein, for example, the operating voltage can be detected
`from the motor driver circuit 12. The electric motor 10
`
`drives a component which is not illustrated but which poses
`the danger of clamping objects or body parts of people.
`Fig. 2 shows a functional correlation between the rotary
`speed n and the rotary torque M of a direct current motor.
`Three characteristic curves 16 are included which apply to
`different operating voltages U of the electric motor 10.
`The methods and the device according to the invention
`for operating power-actuated components which pose a
`clamping hazard to objects or body parts of people is
`described in greater detail using the block diagram shown in
`Fig. 1, and the functional relationship shown in Fig. 2:
`The electric motor 10 drives an actuated component
`which is not shown in the figure and which poses a clamping
`hazard. In place of the electric motor 10 shown in Fig 1, a
`pneumatic or hydraulic drive can be included for the
`component. The detection of a parameter which has a
`relationship to the force of actuation of the component is
`essential. The sensor 13 in Fig.
`1 is included for this
`purpose, detecting for example the rotary speed 11 of the
`motor 10. In place of the motor rotary speed, another rotary
`speed can be detected—for example at a gearbox. At a given
`rotary speed n, a specific rotary torque M and therefore a
`force of actuation can be obtained using the characteristic
`curve in Fig. 2. The functional relationship shown in Fig. 2
`also applies for a direct current electric motor, wherein the
`operating voltage U is incorporated as the parameter for the
`three different characteristic curves 16 included.
`
`At least one derivative with respect to the path traveled
`by the component is determined from the profile of the
`parameter in the signal-processing device 11. If the rotary
`speed of the drive 10 is used as the parameter,
`the path
`traveled can be obtained by an integration of the rotary speed
`signal. At least one derivative is continuously determined
`during the Operation of the component, and the result is
`compared to a pre-specifiable threshold. If the threshold is
`exceeded,
`the device is switched off or the direction of
`movement of the drive 10 is reversed. The first derivative is
`
`In addition or as an alternative,
`preferably determined.
`higher derivatives, and preferably at
`least
`the second
`derivative, are determined. The incorporation of higher
`derivatives, optionally in addition to the first derivative,
`increases the reliability of the detection of a clamping
`occurrence, because changes in the profile of the parameter
`with respect to the path traveled are more evident at higher
`derivatives than in the first derivative.
`
`If the determination of multiple derivatives is included,
`multiple threshold values can be pre-specified, wherein once
`a single threshold value is exceeded, the device is switched
`off or the direction of movement is reversed. If multiple
`derivatives are calculated, a simplification of the evaluation
`method is achieved by combining the results of the
`derivatives and making a comparison. A combination is
`realized, by way of example, by an addition of the results of
`
`Webasto Roof Systems, Inc.
`Exhibit 1018
`
`4
`
`Webasto Roof Systems, Inc.
`Exhibit 1018
`
`

`

`3
`
`DE 40 00 730 Al
`
`6
`
`the individual derivatives, and a subsequent comparison of
`the sums with a single threshold value.
`The
`embodiment
`advantageously includes multiple
`determinations of at
`least one derivative with respect to
`different paths traveled by the component, wherein the
`results of the derivatives are each compared to a pre-
`specified threshold value. Using this measure, it is possible
`to take varying density of a clamped object or body part of a
`person into account. For example, if a comparatively strong
`drop in the parameter is detected, then it can be assumed that
`the start of a clamping of a hard object has occurred. Then, a
`very fast reaction to the start of the clamping occurrence is
`possible. When a clamping occurs of a softer object or body
`part of a person, the change of the parameter has the same
`amount as that for a hard object only over a longer section of
`the path traveled, with the consequence that the threshold
`determined for the hard clamping occurrence would not be
`reached. The calculation of at least one further derivative
`with respect to a further path, and the pre-specification of a
`separated threshold value in this case provides the solution.
`As a result,
`it is also possible to switch off the device as
`quickly as possible when a softer object is clamped.
`In the case of this evaluation as well, it is possible to
`determine both the first and also higher derivatives. Separate
`threshold values are provided for the result of the first and/or
`each of the higher derivatives, wherein the device is
`switched off or the direction of the movement is reversed
`after a single threshold value is exceeded,
`The pre-specification of different threshold values for
`different derivatives, as well as the pre-specification of a
`different set of threshold values for each of multiple
`determinations of the derivatives, running in parallel, with
`respect to the different paths involves a large number of
`thresholds which need to be pre-spccified. For this reason, in
`one advantageous implementation,
`the results of different
`derivatives are combined into one single threshold. As such,
`the number of the thresholds which must be pre—specifled
`corresponds to the number of the multiple derivatives,
`running in parallel, with respect to the different paths. The
`combination can be realized, by way of example, by an
`addition of the results of the different derivatives.
`In general, higher derivatives are formed from the lower
`derivatives determined previously. In a further simplification
`of the method according to the invention, higher derivatives
`are determined—if this determination is included—for the
`smallest path in each case for which a lower derivative was
`already determined. Then, with multiple determinations,
`running in parallel, of derivatives with respect to different
`paths, it is possible to determine the higher derivatives in
`one calculation.
`
`In one advantageous embodiment, there is an adaptive
`threshold determination in the signal-processing device 11,
`wherein the one or the different thresholds are determined
`adaptively in the device 11 by using one or multiple test
`clamping
`processes.
`In
`this measure, manufacturing
`tolerances in the power-actuated components, as well as
`different
`geometric
`relationships
`for
`each
`individual
`component,
`are
`incorporated by means of optimally
`determining the threshold value.
`
`A further embodiment includes the division of the path
`traveled by the component into multiple subregions, wherein
`different thresholds are assigned to each of these subregions.
`The further refinements of the method and of the device
`achieved in this manner produce advantages in the detecting
`of the start of the clamping occurrence, because it is possible
`to accordingly react more quickly to different dimensions of
`body parts or objects.
`In addition, a very wide range of
`change in force or change in speed of the actuated
`component
`is possible [sic] with this measure, wherein
`optimal
`thresholds can be determined for the different
`regions.
`An optionally included signal filtering in the signal
`processing device 11 filters higher frequency interference
`from the detected parameter, which can be created by
`mechanical activity influencing the component. If the device
`is installed in motor vehicles, such interferences are caused
`by a roadway with potholes, for example. As such,
`the
`possibility of a faulty detection, particularly produced in the
`determination of higher derivatives, is reduced.
`A further increase in the operating reliability is produced
`by the pre-speciflcation of a minimum rotary speed, wherein
`the device is switched off or the direction of the movement
`
`is reversed upon the minimum rotary speed being exceeded.
`By way of example, an extremely low rotary speed occurs
`with a stiffness in the drive of the component. A derivative
`of a parameter with respect to the path is potentially no
`longer possible without a modification, due to the low
`change in the rotary speed. In addition, with this measure it
`is possible to detect a blocking of the drive or of the
`component at a point as early as the start of the movement
`from the component resting position.
`In one advantageous implementation of the method and
`of the device according to the invention, there is a correction
`of the detected rotary speed of an electric motor or gearbox
`according to the operating voltage. The detected rotary speed
`is increased or lowered by a rotary speed correction value,
`which in turn is determined—for example in a memory
`device of the signal-processing device 11' for the operating
`voltages which are taken into account for the correction—
`from the stored functional relationship between the rotary
`speed and the rotary torque, or from a value which is
`proportional to the rotary torque which in turn depends on
`the measured rotary speed and the measured operating
`voltage at a given rotary torque. The rotary speed — rotary
`torque characteristic curve of the electric motor 10 needs to
`be known, wherein the operating voltage thereof is pre-
`specified as a parameter. In the case of a direct current
`electric motor 10, therefore, the correction of the detected
`rotary speed is possible in a particularly simple manner from
`the measured operating voltage which is compared to a
`constant determined from the functional relationship shown
`in Fig. 2. A change in the operating voltage leads to a
`parallel shift of the linear rotary speed — rotary torque
`characteristic curve. In addition, the rotary speed has a linear
`dependence on the operating voltage at a fixed rotary torque.
`At a given rotary torque, the determination of the constant is
`possible with only two different
`rotary speeds. The
`functional relationship between the rotary torque M and the
`rotary speed n can be seen in the data sheet of the electric
`motor used. The rotary speed n can also be obtained with
`respect to an arbitrary intermediate stage inside the drive.
`
`Webasto Roof Systems, Inc.
`Exhibit 1018
`
`5
`
`Webasto Roof Systems, Inc.
`Exhibit 1018
`
`

`

`DE 40 00 730 A1
`
`7
`If an electric motor is used as the drive 10, the functional
`relationship between rotary speed 11 and rotary torque M as
`shown in Fig. 2 is the starting point for the determination of
`the threshold value. The maximum allowable clamping force
`corresponds to a load torque on the motor, wherein a drop in
`rotary speed proceeds therefrom. As such,
`the clamping
`force depends on the slope of the rotary speed — rotary
`torque characteristic curve of the corresponding motor. The
`threshold
`values
`can
`be
`derived
`theoretically. An
`experimental
`threshold value determination is preferably
`included. The adaptive threshold determination described
`above is particularly advantageous because the characteristic
`curve 16 may be subject to variation between individual
`motors.
`
`This would lead to an unacceptable deviation of the
`clamping forces. The adaptation is carried out on the final,
`assembled component. Defined load torques are applied to
`the component, and the rotary speed of the motor
`is
`determined therefrom.
`
`is
`curve
`characteristic
`the
`slope of
`specific
`The
`determined for this motor from various different measuring
`points. This measurement process can be carried out
`separately for each rotary device, for example, wherein the
`self-heating of the motor during the measurement process is
`also taken into account. The threshold values and the
`constant are determined from the characteristic curves 16 as
`
`part of the correction of the detected rotary speed according
`to the operating voltage.
`A Hall effect transmitter is particularly suitable for the
`detection of the rotary speed of the drive 10, having
`preferably two Hall elements.
`It
`is possible to make a
`determination of the direction of rotation with two elements.
`
`The Hall effect has proven particularly robust to interference
`and cost—effective in manufacture, particularly in rough
`environmental conditions.
`
`Claims
`
`the operation of power-actuated
`1. A method for
`components which pose a clamping hazard to objects or
`body parts of people, having the features:
`- detection of a parameter which has a relation to the
`force of actuation;
`- detection of the path traveled by the component;
`- determination of at
`least one derivative of the
`
`profile of the parameter with respect to the path;
`- comparison of the result of the derivation to a
`threshold value;
`- switching off the device or reversing the direction
`of movement when the threshold value is exceeded.
`
`2. A method according to claim 1, wherein the results of
`the first and/or higher derivations are combined and
`compared to a threshold value.
`3. A method according to claim 1, wherein multiple
`derivatives are determined with respect to different paths
`traveled, and the results are each compared to a threshold
`value.
`
`4. A method according to claim 3, wherein the results of
`the first and/or higher derivatives are combined in each
`case, and each of the results is compared to a threshold
`value.
`
`8
`
`5. A method according to one of the previous claims,
`wherein the higher derivatives are determined from the
`lower derivatives, which in turn are found with respect to
`the smallest path.
`6. A method according to one of the previous claims,
`wherein the entire path of actuation of the power-
`actuated component is divided into multiple subregions,
`and different
`threshold values are assigned to said
`subregions.
`7. A method according to one of the previous claims,
`including
`a
`signal
`filtering
`for
`high-frequency
`interference signals of the detected parameter,
`in a
`signal-processing device (11).
`8. A method according to one of the previous claims,
`including an adaptive threshold determination, wherein
`the functional relationship between the parameter and the
`force of actuation is determined experimentally by pre—
`specifying at least two different clamping forces.
`9. A method according to one of the previous claims,
`wherein the rotary speed of a drive (10) is detected as the
`parameter by at least one sensor (13), and is relayed to
`the signal-processing device (11).
`10. A method according to claim 8, wherein the path
`traveled by the component
`is determined from the
`integration of the rotary speed signal.
`11. A method according to claim 8 or 9, wherein a
`minimum rotary speed is pre-specified, below which the
`device is switched off or the direction of movement is
`reversed.
`
`to 10,
`
`12. A method according to one of the previous claims,
`having an electric motor drive (10).
`13. A method according to one of the claims 1
`having a pneumatic or hydraulic drive (10).
`including a
`14. A method according to claim 12,
`correction of the detected rotary speed of the electric
`motor (10) in the signal-processing device (11), wherein
`the determined rotary speed (n) is increased or lowered
`by a rotary speed correction value,lwhich in turn is
`determined from the functional relationship between the
`rotary speed (n) and the rotary torque (M), or a value
`which is proportional to the rotary torque (M), according
`to the measured rotary speed (n) and the measured
`operating voltage (U) at a given rotary torque (M).
`15. A method according to claim 12,
`including a
`correction of the detected rotary speed of a direct current
`electric motor (10), in the signal—processing device (11),
`wherein the determined rotary speed (11) is increased or
`lowered by a rotary speed correction value, which in turn
`is determined from the operating voltage (U), and is
`weighted with a constant which is determined from the
`functional relationship between the rotary speed (n) and
`the rotary torque (M), or a value which is proportional to
`the rotary torque (M), for at least two different operating
`voltages (U) and a given rotary torque (M).
`16. A method according to one of the claims 8 to 13,
`wherein at least one Hall effect sensor is included as the
`
`rotary speed sensor.
`17. A device for the operation of power—actuated
`components which pose a clamping hazard to objects or
`body parts of people, having the features:
`- detection of a parameter which has a relation to
`the force of actuation;
`
`Webasto Roof Systems, Inc.
`Exhibit 1018
`
`6
`
`Webasto Roof Systems, Inc.
`Exhibit 1018
`
`

`

`9
`
`10
`
`DE 40 00 730 A1
`
`- detection of the path traveled by the component;
`- determination of at least one derivative of the
`
`profile of the parameter with respect to the path;
`- comparison of the result of the derivation to a
`threshold value;
`reversing the
`-
`switching off the device or
`direction of movement when the threshold value is
`exceeded.
`
`including the
`18. A device according to claim 17,
`determination of multiple derivatives with respect
`to
`different paths traveled: and including a comparison of
`each of the results with a threshold value.
`
`19. A device according to claim 17 or 18, wherein the
`entire actuation path of the power—actuated component is
`divided into multiple subregions, and different threshold
`values are assigned to said subregions.
`20. A device according to one of the claims 17 to 19,
`including an adaptive threshold determination, wherein
`the functional relationship between the parameter and the
`force of actuation is determined experimentally by pre-
`specifying at least two different clamping forces.
`21. A device according to one of the claims 17 to 20,
`wherein the rotary speed of a drive 10 is detected as the
`parameter by at least one sensor (13), and is relayed to
`the signal—processing device (11).
`221 A device according to one of the claims 17 to 21,
`having an electric motor drive (10).
`23‘ A device according to one of the claims 17 to 22,
`including a correction of the detected rotary speed of a
`direct
`current
`electric motor
`(10),
`in the
`signal-
`processing device (11), wherein the determined rotary
`speed (n)
`is increased or lowered by a rotary speed
`correction value, which in turn is determined from the
`operating voltage (U), and is weighted with a constant
`which is determined from the functional relationship
`between the rotary speed (n) and the rotary torque (M),
`or a value which is proportional to the rotary torque (M),
`for at least two different operating voltages (U) and a
`given rotary torque (M).
`
`1 page(s) of drawings
`
`Webasto Roof Systems, Inc.
`Exhibit 1018
`
`7
`
`Webasto Roof Systems, Inc.
`Exhibit 1018
`
`

`

`- Empty page w
`
`8
`
`Webasto Roof Systems, Inc.
`Exhibit 101 8
`
`8
`
`Webasto Roof Systems, Inc.
`Exhibit 1018
`
`

`

`DRAWINGS PAGE 1
`
`Number:
`1m. (31.5;
`
`DE 40 00 730 A1
`F 16 P 3/12
`
`Publication date:
`
`August 1, 1991
`
`
`
`mama
`
`9
`
`Webasto Roof Systems, Inc.
`Exhibit 101 8
`
`9
`
`Webasto Roof Systems, Inc.
`Exhibit 1018
`
`

`

`10
`
`Webasto Roof Systems, Inc.
`Exhibit 1018
`
`10
`
`Webasto Roof Systems, Inc.
`Exhibit 1018
`
`

`

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`8
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`D
`
`BUNDESREPUBLIK ® Offenlegungsschrift
`DEUTSCHLAND
`DE 40 00 730 A1
`
`@ Int. 01.5:
`5015123312
`
`® Aktenzeichen:
`(2;) Anmeldetag:
`® Offen|egungstagz
`
`P4000 730.8
`12. 1.90
`1. 8.91
`
`DEUTSCHES
`PATENTAMT
`
`
`
`
`
` ® Erfinder:
`® Anmelder:
`Lamm, Hubert, 7594 Kappelrodeck, DE; Kiefer,
`Robert Bosch GmbH, 7000 Stuttgart, DE; Reitter 81
`Stefan, 7601 Ortenberg, DE; Knecht, Gerhard, 7557
`Schefenacker KG, 7300 Esslingen, DE; Domatic
`lffezheim, DE; Mau, Gert, 7042 A1d|1ngen,DE;
`GmbH, 7034 G'értringen, DE
`Zottmaier, Rainer, Dr., 7300 Esslingen, DE
`
`
`
`
`Prflfungsantrag gem. § 44 PatG ist gestth
`@Verfahren und Vorrichtung zurn Betreiben von fremdkrafibetétigten Teilen mit Einklemmg’efahr
`@ Es wird ein Verfahran und sine Vorrichtung zum Betreiben
`von frerndkraftbet'étigten Teilen varges