DE102005048961A1 - Vibration-damper device for a motor vehicle seat has piezoelectric elements for actively dampening vibrations occurring in a vehicle's seat - Google Patents
Vibration-damper device for a motor vehicle seat has piezoelectric elements for actively dampening vibrations occurring in a vehicle's seat Download PDFInfo
- Publication number
- DE102005048961A1 DE102005048961A1 DE102005048961A DE102005048961A DE102005048961A1 DE 102005048961 A1 DE102005048961 A1 DE 102005048961A1 DE 102005048961 A DE102005048961 A DE 102005048961A DE 102005048961 A DE102005048961 A DE 102005048961A DE 102005048961 A1 DE102005048961 A1 DE 102005048961A1
- Authority
- DE
- Germany
- Prior art keywords
- seat
- vehicle
- vibration damping
- vehicle seat
- damping device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 230000008859 change Effects 0.000 claims abstract description 9
- 238000013016 damping Methods 0.000 claims description 51
- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- 230000009471 action Effects 0.000 claims description 2
- 230000001419 dependent effect Effects 0.000 description 4
- 238000001514 detection method Methods 0.000 description 4
- 230000003044 adaptive effect Effects 0.000 description 3
- 239000000919 ceramic Substances 0.000 description 3
- 230000005284 excitation Effects 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000006096 absorbing agent Substances 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 238000011896 sensitive detection Methods 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/005—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion using electro- or magnetostrictive actuation means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/002—Seats provided with an occupancy detection means mounted therein or thereon
- B60N2/0021—Seats provided with an occupancy detection means mounted therein or thereon characterised by the type of sensor or measurement
- B60N2/0024—Seats provided with an occupancy detection means mounted therein or thereon characterised by the type of sensor or measurement for identifying, categorising or investigation of the occupant or object on the seat
- B60N2/0025—Seats provided with an occupancy detection means mounted therein or thereon characterised by the type of sensor or measurement for identifying, categorising or investigation of the occupant or object on the seat by using weight measurement
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/002—Seats provided with an occupancy detection means mounted therein or thereon
- B60N2/0021—Seats provided with an occupancy detection means mounted therein or thereon characterised by the type of sensor or measurement
- B60N2/003—Seats provided with an occupancy detection means mounted therein or thereon characterised by the type of sensor or measurement characterised by the sensor mounting location in or on the seat
- B60N2/0031—Seats provided with an occupancy detection means mounted therein or thereon characterised by the type of sensor or measurement characterised by the sensor mounting location in or on the seat mounted on the frame
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/50—Seat suspension devices
- B60N2/501—Seat suspension devices actively controlled suspension, e.g. electronic control
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/50—Seat suspension devices
- B60N2/502—Seat suspension devices attached to the base of the seat
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/50—Seat suspension devices
- B60N2/52—Seat suspension devices using fluid means
- B60N2/522—Seat suspension devices using fluid means characterised by dampening means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/50—Seat suspension devices
- B60N2/54—Seat suspension devices using mechanical springs
- B60N2/542—Seat suspension devices using mechanical springs made of rubber or other material having high internal friction, e.g. polymers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2210/00—Sensor types, e.g. for passenger detection systems or for controlling seats
- B60N2210/40—Force or pressure sensors
- B60N2210/48—Piezoelectric
Landscapes
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Seats For Vehicles (AREA)
- Vibration Prevention Devices (AREA)
Abstract
Description
Die Erfindung betrifft eine Schwingungsdämpfungseinrichtung zur aktiven Dämpfung von auftretenden Schwingungen in einem Fahrzeugsitz gemäß dem Oberbegriff des Anspruchs 1.The The invention relates to a vibration damping device for active damping occurring vibrations in a vehicle seat according to the preamble of claim 1.
Aus
der
In
der
Die zentrale Steuerung weist eine Sensorik auf, welche der Erfassung und Verarbeitung von Schwingungsinformationen dient, welche im Fahrbetrieb des Fahrzeuges in der Bodenplatte auftreten. In Abhängigkeit von diesen erfassten Schwingungen wird die aktive Schwingungsdämpfung durch die zentrale Steuerung aktiviert, indem gezielt Gegenschwingungen an einem oder mehreren der Piezoaktoren erzeugt werden.The central control has a sensor, which the detection and processing of vibration information is used while driving of the vehicle occur in the bottom plate. Dependent on From these detected vibrations, the active vibration damping by the central control activates by selectively countervailing be generated on one or more of the piezoelectric actuators.
Außerdem ist
aus der
Des
Weiteren wird in der
Der Erfindung liegt die Aufgabe zugrunde, eine Schwingungsdämpfungseinrichtung mit wenigstens einem piezoelektrischen Element zur aktiven Dämpfung von auftretenden Schwingungen in einem Fahrzeugsitz anzugeben, welche eine gegenüber dem Stand der Technik optimierte Ausgestaltung aufweist und eine verbesserte Dämpfung der auftretenden Schwingungen gewährleistet.Of the Invention is based on the object, a vibration damping device with at least one piezoelectric element for active damping of indicate vibrations occurring in a vehicle seat, which one opposite the The prior art has optimized design and improved damping ensures the occurring vibrations.
Die Aufgabe wird gelöst durch eine Schwingungsdämpfungseinrichtung mit wenigstens einem piezoelektrischen Element zur aktiven Dämpfung von auftretenden Schwingungen in einem Fahrzeugsitz mit den Merkmalen des Anspruchs 1.The Task is solved by a vibration damping device with at least one piezoelectric element for active damping of occurring Vibrations in a vehicle seat with the features of the claim 1.
Erfindungsgemäß ist das piezoelektrische Element für eine Drucksensierung ausgelegt, wobei das piezoelektrischen Element im Bereich der Fahrzeugkarosserie des Fahrzeuges dergestalt angeordnet ist, dass eine auf den Fahrzeugsitz einwirkenden Kraft mit dem piezoelektrischen Element als Druckänderung gegenüber der Fahrzeugkarosserie sensiert und der Wert der Druckänderung der Steuer-/Regelungseinheit zur Verfügung gestellt wird. Die Schwingungsdämpfungseinrichtung umfasst wenigstens ein piezoelektrisches Element zur aktiven Dämpfung von auftretenden Schwingungen in dem Fahrzeugsitz. Die piezoelektrischen Elemente der erfindungsgemäßen Schwingungsdämpfungseinrichtung erlauben eine Sensierung und eine Dämpfung der in dem Fahrzeugsitz auftretenden Schwingungen mit ein und demselben Bauelement, wodurch die Dämpfung der auftretenden Schwingungen im Fahrzeugsitz optimiert wird. Mit den piezoelektrischen Elementen werden die auftretenden Schwingungen unmittelbar erfasst. Eine adaptive, anregungsabhängige Optimierung der Dämpfung der auftretenden Schwingungen ist gege ben. Es Bedarf hierzu keiner zusätzlichen Sensierung der Schwingungen der Fahrzeugkarosserie. Die Anzahl der verwendeten piezoelektrischen Elemente kann individuell an die Ausgestaltung des Fahrzeugsitzes angepasst werden. Durch die Doppelfunktion der piezoelektrischen Elemente kann eine Kostenreduktion und eine Gewichtsreduktion für die Schwingungsdämpfungseinrichtung bzgl. der eingesetzten Komponenten erzielt werden. Es werden keine gesonderten passiven Schwingungstilger benötigt. Dabei ist es von Vorteil, wenn die Schwingungsdämpfungseinrichtung vier piezoelektrische Elemente aufweist, welche jeweils an einer Koppelstelle des Fahrzeugsitzes zur Fahrzeugkarosserie angeordnet sind.According to the invention, the piezoelectric element is designed for pressure sensing, wherein the piezoelectric element is arranged in the region of the vehicle body of the vehicle in such a way that a force acting on the vehicle seat with the piezoelectric element as a pressure change relative to the vehicle body sensed and the value of the pressure change of the control / Control unit is provided. The vibration damping device comprises at least one piezoelectric element for active damping of vibrations occurring in the vehicle seat. The piezoelectric elements of the vibration damping device according to the invention allow sensing and damping of vibrations occurring in the vehicle seat with one and the same component, whereby the damping of the vibrations occurring in the vehicle seat is optimized. With the piezoelectric elements, the vibrations occurring are detected immediately. An adaptive, excitation-dependent optimization of the damping of the vibrations occurring is gege ben. There is no need for it additional sensing of the vibrations of the vehicle body. The number of piezoelectric elements used can be adapted individually to the design of the vehicle seat. Due to the dual function of the piezoelectric elements, a cost reduction and a weight reduction for the vibration damping device with respect to the components used can be achieved. No separate passive vibration absorbers are needed. It is advantageous if the vibration damping device has four piezoelectric elements, which are each arranged at a coupling point of the vehicle seat to the vehicle body.
Die piezoelektrischen Elemente sind in einem Bereich eines Sitzbefestigungsabschnittes der Fahrzeugkarosserie angeordnet. Der Sitzbefestigungsabschnitt ist fest mit dem Fahrzeugboden verbunden und trägt das gesamte Gewicht des auf ihm beweglich angeordneten Fahrzeugsitzes. Eine Anordnung der piezoelektrischen Elemente im Bereich des Sitzbefestigungsabschnittes ist für eine messtechnisch empfindliche Erfassung von auf den Fahrzeugsitz einwirkenden Kräften besonders geeignet.The Piezoelectric elements are in a region of a seat attachment portion the vehicle body arranged. The seat attachment section is firmly connected to the vehicle floor and carries the entire weight of the on him movably arranged vehicle seat. An arrangement of piezoelectric elements in the region of the seat attachment portion is for a metrologically sensitive detection of the vehicle seat acting forces particularly suitable.
In einer weiteren Ausgestaltung der Erfindung ist der Sitzbefestigungsabschnitt als Schiene für einen Sitzrahmen des Fahrzeugsitzes ausgebildet und das piezoelektrischen Element auf der dem Fahrzeugsitz abgewandten Seite der Schiene angeordnet. Das piezoelektrische Element ist zwischen dem Fahrzeugboden und der Schiene so eingebracht, dass die Schiene den auf ihr lastenden Druck des Fahrzeugsitzes, zusätzlich der auf ihn einwirkenden Kräfte, vollständig an das piezoelektrische Element übertragen kann. Mit dieser Ausgestaltung der Schwingungsdämpfungseinrichtung ist sichergestellt, dass nur Kräfte mit dem piezoelektrischen Element sensiert werden – neben denen durch das Eigengewicht des Fahrzeugsitzes verursachten Kräften – die durch eine äußere Einwirkung auf den Fahrzeugsitz verursacht werden.In Another embodiment of the invention is the seat attachment portion as a rail for formed a seat frame of the vehicle seat and the piezoelectric Element arranged on the vehicle seat facing away from the rail. The piezoelectric element is between the vehicle floor and The rail is placed so that the rail on the burden on her Pressure of the vehicle seat, in addition the forces acting on him, Completely transmitted to the piezoelectric element can. With this embodiment of the vibration damping device is ensured that only forces be sensed with the piezoelectric element - next those caused by the weight of the vehicle seat forces - by an external influence caused to the vehicle seat.
Vorzugsweise werden mit der Schwingungsdämpfungseinrichtung das Gewicht und/oder eine Gewichtsverteilung eines auf dem Fahrzeugsitz sitzenden Insassen bestimmt. Mittels der zusätzlichen Erfassung des Gewichts und/oder der Gewichtsverteilung werden Parameter zur Verfügung gestellt, welche in einem Bedarfsfall eine Ansteuerung von geeigneten Sicherheitsmaßnahmen für einen Insassenschutz ermöglichen. Insbesondere kann durch Auswertung der Gewichtsverteilung eine Insassenidentifikation durchgeführt werden.Preferably be with the vibration damping device the weight and / or weight distribution of one on the vehicle seat seated inmates. By the additional detection of the weight and / or weight distribution parameters are provided which in case of need a control of suitable security measures for one Allow occupant protection. In particular, by evaluating the weight distribution, an occupant identification carried out become.
In einer weiteren Ausgestaltung der Erfindung kann zusätzlich wenigstens ein Drucksensor zur Sensierung einer auf den Fahrzeugsitz einwirkenden Kraft in einer Rückenlehne und/oder in einem Sitzteil des Fahrzeugsitzes angeordnet sein. Dadurch wird eine Erfassung der auftretenden Schwingungen auch lokal innerhalb des Fahrzeugsitzes ermöglicht, wodurch die Schwingungsdämpfung weiter optimiert wird. Die Schwingungsdämpfung kann dadurch beispielsweise bezüglich des Sitzteils oder der Rückenlehne individuell optimiert werden, wobei auch eine Torsion und/oder eine Biegung berücksichtigt werden kann.In a further embodiment of the invention may additionally at least a pressure sensor for sensing a force acting on the vehicle seat Force in a backrest and / or be arranged in a seat part of the vehicle seat. Thereby a detection of the occurring vibrations is also locally within the vehicle seat allows causing the vibration damping is further optimized. The vibration damping can thereby, for example in terms of the seat part or the backrest be optimized individually, with a twist and / or a Bending considered can be.
Weitere vorteilhafte Ausgestaltungen der Erfindung sind in den Unteransprüchen wiedergegeben.Further advantageous embodiments of the invention are given in the dependent claims.
Die Erfindung wird anhand eines Ausführungsbeispiels in der einzigen Figur näher erläutert, wobei die Figur eine Schwingungsdämpfungseinrichtung mit wenigstens einem piezoelektrischen Element zur aktiven Dämpfung von auftretenden Schwingungen in einem Fahrzeugsitz in schematischer Darstellung zeigt.The Invention is based on an embodiment closer in the single figure explains the figure is a vibration damping device with at least one piezoelectric element for active damping of occurring oscillations in a vehicle seat in a more schematic Illustration shows.
Eine
in der Figur dargestellte Schwingungsdämpfungseinrichtung
Die
piezoelektrischen Elemente
Es
ist von Vorteil, wenn die piezoelektrischen Elemente
Mit
der erfindungsgemäßen Schwingungsdämpfungseinrichtung
Zusätzlich sind
in diesem Ausführungsbeispiel
zwei Drucksensoren
Mit
der Steuer-/Regelungseinheit
Die
erfindungsgemäße Schwingungsdämpfungseinrichtung
Claims (9)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102005048961A DE102005048961A1 (en) | 2005-10-13 | 2005-10-13 | Vibration-damper device for a motor vehicle seat has piezoelectric elements for actively dampening vibrations occurring in a vehicle's seat |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102005048961A DE102005048961A1 (en) | 2005-10-13 | 2005-10-13 | Vibration-damper device for a motor vehicle seat has piezoelectric elements for actively dampening vibrations occurring in a vehicle's seat |
Publications (1)
Publication Number | Publication Date |
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DE102005048961A1 true DE102005048961A1 (en) | 2007-04-19 |
Family
ID=37896334
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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DE102005048961A Withdrawn DE102005048961A1 (en) | 2005-10-13 | 2005-10-13 | Vibration-damper device for a motor vehicle seat has piezoelectric elements for actively dampening vibrations occurring in a vehicle's seat |
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DE (1) | DE102005048961A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007048194A1 (en) * | 2007-10-08 | 2009-04-09 | Grammer Ag | Vehicle with sprung vehicle seat and suspension vehicle cab and suspension method |
DE102008010719A1 (en) | 2008-02-22 | 2009-08-27 | Volkswagen Ag | Seat for vehicle i.e. motor vehicle, has flexible damping element that is provided within area of fixing elements of seat frame and/or back rest for isolating vibrations of body from vehicle seat |
WO2009108234A1 (en) * | 2008-02-28 | 2009-09-03 | Bose Corporation | Plant supension system with weight compensation |
US8342541B2 (en) | 2007-12-04 | 2013-01-01 | Grammer, AG | Apparatus and method for active spring suspension of a vehicle component |
-
2005
- 2005-10-13 DE DE102005048961A patent/DE102005048961A1/en not_active Withdrawn
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007048194A1 (en) * | 2007-10-08 | 2009-04-09 | Grammer Ag | Vehicle with sprung vehicle seat and suspension vehicle cab and suspension method |
US8265832B2 (en) | 2007-10-08 | 2012-09-11 | Grammer Ag | Vehicle comprising a spring-mounted vehicle seat and a spring-mounted vehicle cab, and suspension method |
DE102007048194B4 (en) * | 2007-10-08 | 2014-05-15 | Grammer Aktiengesellschaft | Vehicle with sprung vehicle seat and suspension vehicle cab and suspension method |
US8342541B2 (en) | 2007-12-04 | 2013-01-01 | Grammer, AG | Apparatus and method for active spring suspension of a vehicle component |
DE102008010719A1 (en) | 2008-02-22 | 2009-08-27 | Volkswagen Ag | Seat for vehicle i.e. motor vehicle, has flexible damping element that is provided within area of fixing elements of seat frame and/or back rest for isolating vibrations of body from vehicle seat |
WO2009108234A1 (en) * | 2008-02-28 | 2009-09-03 | Bose Corporation | Plant supension system with weight compensation |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8127 | New person/name/address of the applicant |
Owner name: DAIMLERCHRYSLER AG, 70327 STUTTGART, DE |
|
8127 | New person/name/address of the applicant |
Owner name: DAIMLER AG, 70327 STUTTGART, DE |
|
R120 | Application withdrawn or ip right abandoned |
Effective date: 20120125 |