WO1996019858A1 - Schaltungsanordnung und verfahren zum betreiben eines verstellantriebs - Google Patents
Schaltungsanordnung und verfahren zum betreiben eines verstellantriebs Download PDFInfo
- Publication number
- WO1996019858A1 WO1996019858A1 PCT/DE1995/001672 DE9501672W WO9619858A1 WO 1996019858 A1 WO1996019858 A1 WO 1996019858A1 DE 9501672 W DE9501672 W DE 9501672W WO 9619858 A1 WO9619858 A1 WO 9619858A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- circuit arrangement
- power
- adjustment
- electric motor
- arrangement according
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
- H02H7/085—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors against excessive load
- H02H7/0851—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors against excessive load for motors actuating a movable member between two end positions, e.g. detecting an end position or obstruction by overload signal
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
- H02H7/085—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors against excessive load
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/44—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to the rate of change of electrical quantities
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
- H02H7/093—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors against increase beyond, or decrease below, a predetermined level of rotational speed
Definitions
- the determination of the electrical power takes into account the reaction capacity of the adjustment drive, which is determined in particular by the stored kinetic energy both in the electric motor and in the drive and in the part to be adjusted.
- the electrical power of the electric motor can be varied continuously with a power specification signal depending on the position of the part to be adjusted.
- An advantageous measure provides that at least two discrete power levels are specified with the power specification signal.
- the electric motor 10 can be connected via a first and second changeover switch 16, 17 to a first and second connection 18, 19 of an energy source (not shown in more detail).
- the first changeover switch 16 connects a first motor connection 20 either to the first or the second connection 18, 19.
- the second changeover switch 17 also connects a second motor connection 21 either to the first or second connection 18, 19.
- a switching element 23, on which a voltage drop U occurs, is arranged in a line 22 leading from the changeover switches 16, 17 to the second connection 19.
- the two changeover switches 16, 17 are actuated by control signals 24, 25 which are emitted by a selection circuit 26 which is contained in a control arrangement 27.
- the selection circuit also outputs a direction of rotation signal 28 to a position determination 29.
- the switching element 23 is actuated by a switching signal 30 which provides a power specification 31 contained in the control arrangement 27.
- the selection circuit 26 contained in the control arrangement 27 and the power specification 31 are acted upon by a positioning signal 32 supplied to the control arrangement 27.
- a tap 33 on the line 22 leading from the changeover switches 16, 17 to the switching element 23 is connected both to a speed determination 34 and to a motor current evaluation 35. Between tap 33 and speed determination 34 a capacitor 36 and a signal processor 37 are connected in series.
- the speed determination 34 outputs an output signal 38 to a speed comparator 39 which compares the output signal 38 with a speed limit value 40 and outputs a first overload signal 41 when the limit value is exceeded.
- the output signal 38 of the speed determination 34 is further supplied to the power input 31.
- the motor current evaluation 35 outputs as an output signal a parameter 42 determined from the motor current to a parameter comparator 43 which compares the parameter 42 with a parameter limit value 44 and emits a second overload signal 45 when a limit value is exceeded.
- a ripple signal 46 which provides signal conditioning 37, is fed to speed determination 34.
- the ripple W on which the ripple signal 46 is based is shown schematically in the signal conditioning unit 37.
- the distance I 'between the shafts represents a measure of a certain adjustment path of the part 12 to be adjusted.
- the distance I 'can correspond to the path interval I.
- the ripple signal 46 is also fed to the position determination 29.
- the position determination 29 outputs the position signal Pg as a measure of the position P M of the part 12 to be adjusted.
- the position signal P ⁇ is fed to a position comparator 47 and to the motor current evaluation 35 and influences the limit values 40, 44.
- the position comparator 47 compares the position signal Pg with predetermined position ranges Pv and outputs a power specification signal 48 to the power specifications 31.
- the mechanical coupling 11 corresponds, for example, to a gearbox and a transfer device, which produces a reciprocating movement from a rotary movement.
- the electric motor 10 can be operated in both directions of rotation. The directions of rotation are specified via a corresponding control of the two changeover switches 16, 17, which connect the two motor connections 20, 21 to the two connections 18, 19 of the energy source (not shown in more detail).
- the switch positions of the changeover switches 16, 17 are determined by the selection circuit 26 contained in the control arrangement 27 as a function of the positioning signal 32 and communicated to the two changeover switches 16, 17 via the control signals 24, 25.
- the positioning signal 32 can contain, for example, an open-close command, a left-turn-right-turn command or a command via a continuous position specification.
- the embodiment shown in the figure is based on a controller in which the control arrangement 27 does not contain any feedback about the position P M of the part 12 to be adjusted. The expansion to a Po Position control is possible by returning the position signal P E to the control arrangement 27.
- the electric motor 10 can be stopped by connecting both motor connections 20, 21 to either the first connection 18 or the second connection 19 of the energy source. The electric motor 10 is then short-circuited in each case. It is also possible to switch off the electric motor 10 in that at least one of the two changeover switches 16, 17 has a further switching contact which does not lead to either the first or the second connection 18, 19 of the energy source. Regardless of the position of the changeover switches 16, 17, the electric motor 10 can be switched on and off via the switching element 23.
- the switching element 23 therefore offers a further possibility of switching off the electric motor 10, regardless of the position of the changeover switches 16, 17.
- the switching element 23 is switched on and off by the switching signal 30, which first defines the performance specifications 31 contained in the control arrangement 27 as a function of the positioning signal 32.
- Switching element 23 can be provided by means of the switching signal 30, in which the switching element 23 is switched on and off in rapid succession in order to preselect an average motor current.
- the specification of the average current through the electric motor 10 is by varying the
- An overload state of the adjustment drive 10, 11, 12 occurs, for example, when it is stiff, when a mechanical end stop is reached or when it is jammed
- Another possibility for detecting an overload condition uses a speed or a speed that occurs in the adjusting drive 10, 11, 12.
- the determined speed is also a measure of the adjusting force or the adjusting torque with which the part 12 to be adjusted is moved.
- Sensors which detect the magnetic field accompanying the current are particularly suitable for detecting the motor current.
- Such sensors are, for example, Hall effect sensors, magnetoresistive elements or inductive sensors.
- the advantage of these sensors is that no intervention in the current-carrying lines is necessary.
- a current sensor is shown, which provides a signal voltage representative of the motor current due to a voltage drop occurring at a resistor.
- One such sensor is, for example, an ohmic resistance, which should have a low value in view of the high motor current.
- the exemplary embodiment is based on the detection of the voltage drop U that occurs at the switching element 23. This current detection has the advantage that a separate sensor can be omitted.
- the switching element 23 is preferably a power MOSFET with a low resistance in the on state.
- the relationship between the voltage drop U and the current flowing through the field effect transistor is sufficiently linear for the intended application. If necessary, an electronic equalization can be carried out.
- the voltage drop U is coupled out at the tap 33 from the line 22 and fed to both the motor current evaluation 35 and the speed determination 34.
- the motor current evaluation 35 determines a parameter of the motor current, wherein for example the absolute level of the motor current and / or the temporal change in the motor current and / or the location-related change in the motor current can be taken into account. If necessary, an addition from the absolute motor current level to one of the change values determined can be provided. When determining the changes, both the first and higher derivatives, either according to the time or according to the location, can be taken into account.
- the parameter 42 determined in the motor current evaluation 35 is compared in the parameter comparator 43 with the parameter limit value 44.
- the characteristic variable limit value 44 can be, for example, a fixed, predetermined number.
- the parameter limit value 44 preferably depends on the electrical voltage of the energy source, not shown in the figure, to which the electric motor 10 can be connected via the two connections 18, 19. Furthermore, the parameter limit value 44 preferably depends on the position P ⁇ of the part 12 to be adjusted.
- the speed determination 34 determines a speed of the actuating drive 10, 11, 12 in the exemplary embodiment shown from the ripple W of the motor current.
- the ripple W in the motor current is caused by commutation processes in the electric motor 10 and therefore depends on the design of the electric motor 10.
- the number of waves during one Rotation of the electric motor 10 is determined by design.
- the rectangular signal which appears as a ripple signal 46, can be evaluated in the speed determination 34 by a time determination between the level changes and converted into the output signal 38, which is a measure of a speed that has occurred in the adjusting drive 10, 11, 12.
- the output signal 38 is likewise a measure of the speed of the part 12 to be adjusted or of another part within the adjusting drive 10, 11, 12.
- the speed-related values are therefore also speed-related values.
- the output signal 38 is compared in the speed comparator 33 with the speed limit value 40.
- the speed limit value 40 can be a fixed predetermined number or preferably a value that depends on other variables.
- a dependency on the position P M of the part 12 to be adjusted is preferably provided via the position signal Pg. With a limit value
- the speed comparator 39 emits the first overload signal 41 in the sense of a shortfall.
- a soft clamping process in which the part 12 to be adjusted can travel a comparatively large adjustment distance until a A predetermined maximum pinching force can generally be mastered without any problems since there is sufficient time available to switch off the electric motor 10 or to reverse the direction of rotation after the soft pinching process has been detected. It is more difficult to master hard pinching processes in which the pinching force must be reduced to the maximum permitted value within a comparatively short adjustment path.
- a high spring rate which indicates the change in force on the adjustment path covered until one of the overload signals 41, 45 occurs, must therefore be realizable to master a hard pinching process.
- the measure provided according to the invention the fixing of the electrical power available to the electric motor 10 of the adjustment drive 10, 11, 12 to a predetermined value, which is preferably position-dependent, enables a predetermined spring rate to be maintained.
- Existing adjusting drives 10, 11, 12, which do not make it possible to maintain the specified spring rate can continue to be used with the measure provided according to the invention after, for example, compliance with legal regulations.
- If the power is determined independently of the position of the part 12 to be adjusted, a reduction in the adjustment speed may have to be accepted.
- the power specified for the electric motor 10 is preferably dependent on the position of the part to be adjusted, with a division into different areas P A , P ⁇ , P 1 preferably also being provided.
- the adjusting drive 10, 11, 12 can then operate at the full adjustment speed in the positions or in the position ranges P A , P ⁇ , P 1, in which no power reduction is provided.
- the value to which the power for the electric motor 10 is to be determined is preferably determined experimentally. at Changes in output in the sense of a reduction depend preferably on the operating data of the adjustment drive 10, 11, 12. Such operating data are, for example, the power consumed by the electric motor 10, which is actually consumed at the maximum power available, and the motor current or preferably the speed. For example, in a position range P A , P ß , P c there is a speed level of 3,000 rpm and in a subsequent position range P, P ß , P ⁇ the speed should be reduced to a level of 1,000 rpm, for example , the electrical power provided for the electric motor 10 is set to an experimentally determined value of, for example, 40% compared to the full power.
- the power reduction can be lower and is, for example, ascertained 60% of the full power in order to likewise reduce the speed level to 1,000 rpm.
- the power specification 31 carries out the determination of the power by a corresponding determination of the switching signal 30.
- the power input 31 is supplied with the output signal 38 determined by the speed determination 34.
- the power specification 31 receives the position-dependent power specification signal 48, which the position comparator 47 outputs.
- an incremental position determination is provided.
- the incremental position determination can use additional position sensors such as Hall elements.
- the evaluation of the ripple W of the motor current is provided in any case in the exemplary embodiment, so that in the present exemplary embodiment the position P 1 is to be determined from the ripple W of the motor current.
- the ripple signal 46 is therefore fed to the position determination 29, which has a forward Contains backward counter that counts the number of individual waves.
- the position determination 29 receives the information about the drive direction via the direction of rotation signal 28.
- a calibration in the position determination 29 can be carried out by means of a reference mark, not shown in the figure, which is arranged within the adjustment drive 10, 11, 12 or on the part 12 to be adjusted.
- Another calibration option is given by moving to a predetermined position P M and setting the counter in position determination 29 accordingly.
- the part 12 to be adjusted can be moved on the one mechanical end stops 14, 15, the reaching of which is indicated by the occurrence of at least one overload signal 41, 45.
- the counter contained in the position determination 29 can be set to the counter reading zero, for example.
- the position determination 29 outputs the position P M of the part 12 to be adjusted as a position signal P B.
- the adjustment path of the part 12 to be adjusted is preferably divided into a plurality of position ranges P A , P ⁇ , P Q.
- the position ranges Py specified for the position comparator 47 can correspond to the position ranges P A , P ⁇ , P c . For example, it is provided that within the position range P B , within which none of the end stops
- the method according to the invention which is particularly suitable for controlling hard pinching processes, provides for a continuous change in a parameter, based on successive travel intervals I, to trigger one of the overload signals 41, 45.
- a continuous motor current increase in the motor current evaluation can take place as a function of the position signal Pg supplied to the motor current evaluation 35.
- the path intervals I can be determined from the position signal P E on the basis of the determined change in position. An increase in the motor current ascertained in the parameter comparator 43 within a predetermined number of successive path intervals I leads to the triggering of the second overload signal 45. Another possibility is offered by evaluating the motor current ripple in the signal conditioning system 37. The determination of the individual path intervals I can omitted here since the position information is contained in the ripple W. The distance I 'of the individual shafts is directly a measure of the individual travel intervals I of the part 12 to be adjusted. Depending on the implementation of the entire adjustment drive 10, 11, 12, the stood I 1 from wave to wave at least approximately the predetermined path interval I, which must be set to a specific value in order to achieve a predetermined position resolution.
- the path interval I and the distance I ' are to be set to a correspondingly small value, in particular in order to achieve a minimum predetermined spring rate.
- the speed determination 34 determines the times between the successive distances I 'from the ripple signal 46. In the case of a continuous increase in the times required for the individual distances I' in relation to a predetermined number of distances I ', the speed comparator 39 gives the result most overload signal 41 out. If necessary, averaging over several distances I 'may be necessary, for example to compensate for a phase jitter.
- the method according to the invention for operating the adjustment drive 10, 11, 12 is to be seen in connection with the determination, in particular reduction of the electrical drive power, which is provided according to the invention and which is made available to the electric motor 10.
Landscapes
- Control Of Electric Motors In General (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
- Vehicle Body Suspensions (AREA)
- Oscillators With Electromechanical Resonators (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP95936986A EP0799515A1 (de) | 1994-12-19 | 1995-11-25 | Schaltungsanordnung und verfahren zum betreiben eines verstellantriebs |
JP8519412A JPH10510978A (ja) | 1994-12-19 | 1995-11-25 | 調整駆動部の作動回路装置及び方法 |
US08/860,304 US5963001A (en) | 1994-12-19 | 1995-11-25 | Circuit arrangement and method for operating an adjusting device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4444762A DE4444762A1 (de) | 1994-12-19 | 1994-12-19 | Schaltungsanordnung und Verfahren zum Betreiben eines Verstellantriebs |
DEP4444762.0 | 1994-12-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1996019858A1 true WO1996019858A1 (de) | 1996-06-27 |
Family
ID=6535931
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE1995/001672 WO1996019858A1 (de) | 1994-12-19 | 1995-11-25 | Schaltungsanordnung und verfahren zum betreiben eines verstellantriebs |
Country Status (7)
Country | Link |
---|---|
US (1) | US5963001A (de) |
EP (1) | EP0799515A1 (de) |
JP (1) | JPH10510978A (de) |
KR (1) | KR980700717A (de) |
CN (1) | CN1170480A (de) |
DE (1) | DE4444762A1 (de) |
WO (1) | WO1996019858A1 (de) |
Families Citing this family (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19615581B4 (de) * | 1996-04-19 | 2013-03-07 | Bayerische Motoren Werke Aktiengesellschaft | Verfahren zum Schutz von mechanischen und durch einen Elektromotor angetriebenen Komponentenin Fahrzeugen vor Beschädigung |
DE19758796B4 (de) * | 1997-10-07 | 2009-04-09 | Brose Fahrzeugteile Gmbh & Co. Kommanditgesellschaft, Coburg | Verfahren zur Steuerung und Regelung der Verstellbewegung eines translatorisch verstellbaren Bauteils in Fahrzeugen |
DE19800194A1 (de) * | 1998-01-07 | 1999-07-08 | Bosch Gmbh Robert | Elektromotorischer Antrieb |
DE19811151A1 (de) * | 1998-03-14 | 1999-09-16 | Bosch Gmbh Robert | Verfahren zum Ansteuern eines elektrischen Antriebs |
JPH11336422A (ja) * | 1998-05-25 | 1999-12-07 | Alps Electric Co Ltd | パワーウインド用スイッチ装置 |
DE19840161A1 (de) * | 1998-09-03 | 2000-03-16 | Webasto Karosseriesysteme | Antriebsvorrichtung und Verfahren zum Verstellen eines Fahrzeugteils |
JP2000274142A (ja) * | 1999-03-23 | 2000-10-03 | Koito Mfg Co Ltd | パワーウインドの安全装置 |
DE10011982B4 (de) * | 2000-03-11 | 2008-03-27 | Leopold Kostal Gmbh & Co. Kg | Verfahren zur Überwachung und Beeinflussung eines Elektromotors |
DE10044312A1 (de) * | 2000-09-07 | 2002-04-04 | Wampfler Ag | Steuerschaltung und Verfahren zur Steuerung einer Schließeinrichtung |
DE10108946A1 (de) * | 2001-02-23 | 2002-05-23 | Conti Temic Microelectronic | Verfahren zur Steuerung eines Elektromotors |
JP4287070B2 (ja) * | 2001-04-02 | 2009-07-01 | 矢崎総業株式会社 | パワーウインド挟み込み防止装置 |
US6798160B2 (en) * | 2001-11-02 | 2004-09-28 | Honda Giken Kogyo Kabushiki Kaisha | Electric working machine |
US6788016B2 (en) | 2002-05-31 | 2004-09-07 | Valeo Electrical Systems, Inc. | Motor speed-based anti-pinch control apparatus and method with endzone ramp detection and compensation |
US6678601B2 (en) | 2002-05-31 | 2004-01-13 | Valeo Electrical Systems, Inc. | Motor speed-based anti-pinch control apparatus and method with rough road condition detection and compensation |
US6794837B1 (en) | 2002-05-31 | 2004-09-21 | Valeo Electrical Systems, Inc. | Motor speed-based anti-pinch control apparatus and method with start-up transient detection and compensation |
US6822410B2 (en) | 2002-05-31 | 2004-11-23 | Valeo Electrical Systems, Inc. | Motor speed-based anti-pinch control apparatus and method |
DE20213758U1 (de) * | 2002-09-05 | 2003-10-09 | Brose Fahrzeugteile | Ansteuerschaltung für einen Elektromotor |
DE202004010211U1 (de) * | 2004-06-30 | 2005-08-18 | Brose Fahrzeugteile Gmbh & Co. Kommanditgesellschaft, Coburg | Steuerungsvorrichtung zur Steuerung einer Verstelleinrichtung eines Kraftfahrzeuges |
DE102006049123B4 (de) * | 2006-10-18 | 2013-01-24 | Continental Automotive Gmbh | Verfahren zur Ermittlung der Drehstellung des Rotors eines mechanisch kommutierten Gleichstrom-Stellmotors |
DE102006057680B3 (de) * | 2006-12-07 | 2008-04-10 | Audi Ag | Verfahren und Vorrichtung zum Öffnen und Schließen eines elektrischen Bauteils bei einem Hindernis |
DE102009044912A1 (de) * | 2009-09-23 | 2011-04-07 | Robert Bosch Gmbh | Motorsystem sowie ein Betriebsverfahren für ein solches Motorsystem |
DE102016208596A1 (de) * | 2016-05-19 | 2017-11-23 | Robert Bosch Gmbh | Verfahren zum Betreiben einer Schließvorrichtung sowie eine Schließvorrichtung |
CN106410752B (zh) * | 2016-06-23 | 2018-10-16 | 农业部南京农业机械化研究所 | 一种电机控制装置 |
DE102016218761A1 (de) * | 2016-09-28 | 2018-03-29 | Zf Friedrichshafen Ag | Verfahren und Steuergerät zum Betreiben einer Aktorvorrichtung und Aktorsystem |
WO2021123279A1 (de) * | 2019-12-20 | 2021-06-24 | Dewertokin Gmbh | Elektromotorischer möbelantrieb |
US11611297B2 (en) | 2020-09-18 | 2023-03-21 | Gentherm Inc. | Anti-pinch motor control |
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EP0275238A2 (de) * | 1987-01-15 | 1988-07-20 | CAVIS CAVETTI ISOLATI S.p.A. | Schaltanordnung zur Steuerung der elektrischen Motoren für das Heben und Senken der Scheiben in Kraftfahrzeugen und ähnlichen |
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US5334876A (en) * | 1992-04-22 | 1994-08-02 | Nartron Corporation | Power window or panel controller |
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JPS54120132A (en) * | 1978-01-25 | 1979-09-18 | Tekron Patents Ltd | Control circuit for electric window hoist |
JPS60115784A (ja) * | 1983-11-28 | 1985-06-22 | アイシン精機株式会社 | 開口覆材の自動開閉装置 |
US4633153A (en) * | 1986-02-24 | 1986-12-30 | General Motors Corporation | Power window control with tape drive tension release |
DE4127879C2 (de) * | 1991-08-22 | 1994-07-07 | Mtu Muenchen Gmbh | Regelvorrichtung zur Regelung von Luftspalten elektromagnetischer Tragsysteme |
US5404673A (en) * | 1992-06-26 | 1995-04-11 | Koito Manufacturing Co., Ltd. | Power window apparatus with safety device |
EP0645029A4 (de) * | 1993-03-12 | 1996-01-03 | Prospects Corp | Automatisches lüftungssystem für fahrzeuge. |
GB2292621B (en) * | 1993-03-31 | 1997-07-09 | Komatsu Mfg Co Ltd | Method and apparatus for automatically controlling the opening and closing of a window of driver's cab of a working vehicle |
US5701063A (en) * | 1995-04-05 | 1997-12-23 | Ford Global Technologies, Inc. | Obstruction-sensing system for a movable member |
EP0751274A1 (de) * | 1995-06-30 | 1997-01-02 | Siemens Aktiengesellschaft | Stellantrieb |
DE19539578B4 (de) * | 1995-10-25 | 2007-04-05 | Robert Bosch Gmbh | Verfahren zum Überwachen des Bewegungswegs eines Teils |
US5731675A (en) * | 1996-12-10 | 1998-03-24 | Trw Inc. | Adjustable motor control circuit for power windows |
-
1994
- 1994-12-19 DE DE4444762A patent/DE4444762A1/de not_active Withdrawn
-
1995
- 1995-11-25 WO PCT/DE1995/001672 patent/WO1996019858A1/de not_active Application Discontinuation
- 1995-11-25 EP EP95936986A patent/EP0799515A1/de not_active Ceased
- 1995-11-25 JP JP8519412A patent/JPH10510978A/ja active Pending
- 1995-11-25 US US08/860,304 patent/US5963001A/en not_active Expired - Lifetime
- 1995-11-25 KR KR1019970704076A patent/KR980700717A/ko not_active Application Discontinuation
- 1995-11-25 CN CN95196893A patent/CN1170480A/zh active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0275238A2 (de) * | 1987-01-15 | 1988-07-20 | CAVIS CAVETTI ISOLATI S.p.A. | Schaltanordnung zur Steuerung der elektrischen Motoren für das Heben und Senken der Scheiben in Kraftfahrzeugen und ähnlichen |
GB2264825A (en) * | 1989-04-28 | 1993-09-08 | Riken Kk | Electric motor control circuit. |
US5334876A (en) * | 1992-04-22 | 1994-08-02 | Nartron Corporation | Power window or panel controller |
Also Published As
Publication number | Publication date |
---|---|
CN1170480A (zh) | 1998-01-14 |
DE4444762A1 (de) | 1996-06-20 |
KR980700717A (ko) | 1998-03-30 |
JPH10510978A (ja) | 1998-10-20 |
EP0799515A1 (de) | 1997-10-08 |
US5963001A (en) | 1999-10-05 |
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