EP2494314A2 - Messanordnung und -verfahren zur erfassung einer drehbewegung sowie labyrinthdichtung - Google Patents
Messanordnung und -verfahren zur erfassung einer drehbewegung sowie labyrinthdichtungInfo
- Publication number
- EP2494314A2 EP2494314A2 EP10771110A EP10771110A EP2494314A2 EP 2494314 A2 EP2494314 A2 EP 2494314A2 EP 10771110 A EP10771110 A EP 10771110A EP 10771110 A EP10771110 A EP 10771110A EP 2494314 A2 EP2494314 A2 EP 2494314A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- absolute
- encoder
- machine part
- wheel
- sensor
- 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- Withdrawn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
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
- G01D5/244—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing characteristics of pulses or pulse trains; generating pulses or pulse trains
- G01D5/245—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing characteristics of pulses or pulse trains; generating pulses or pulse trains using a variable number of pulses in a train
- G01D5/2454—Encoders incorporating incremental and absolute signals
- G01D5/2455—Encoders incorporating incremental and absolute signals with incremental and absolute tracks on the same encoder
-
- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/72—Sealings
- F16C33/76—Sealings of ball or roller bearings
- F16C33/80—Labyrinth sealings
-
- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C41/00—Other accessories, e.g. devices integrated in the bearing not relating to the bearing function as such
- F16C41/007—Encoders, e.g. parts with a plurality of alternating magnetic poles
-
- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
- F16C19/34—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load
- F16C19/38—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with two or more rows of rollers
-
- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C23/00—Bearings for exclusively rotary movement adjustable for aligning or positioning
- F16C23/06—Ball or roller bearings
- F16C23/08—Ball or roller bearings self-adjusting
- F16C23/082—Ball or roller bearings self-adjusting by means of at least one substantially spherical surface
- F16C23/086—Ball or roller bearings self-adjusting by means of at least one substantially spherical surface forming a track for rolling elements
-
- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2300/00—Application independent of particular apparatuses
- F16C2300/10—Application independent of particular apparatuses related to size
- F16C2300/14—Large applications, e.g. bearings having an inner diameter exceeding 500 mm
-
- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2360/00—Engines or pumps
- F16C2360/31—Wind motors
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M1/00—Analogue/digital conversion; Digital/analogue conversion
- H03M1/12—Analogue/digital converters
- H03M1/22—Analogue/digital converters pattern-reading type
- H03M1/24—Analogue/digital converters pattern-reading type using relatively movable reader and disc or strip
- H03M1/28—Analogue/digital converters pattern-reading type using relatively movable reader and disc or strip with non-weighted coding
- H03M1/30—Analogue/digital converters pattern-reading type using relatively movable reader and disc or strip with non-weighted coding incremental
- H03M1/308—Analogue/digital converters pattern-reading type using relatively movable reader and disc or strip with non-weighted coding incremental with additional pattern means for determining the absolute position, e.g. reference marks
Definitions
- the invention relates to a measuring arrangement for detecting a rotational movement. Furthermore, the invention relates to a bearing arrangement with such a measuring arrangement, a labyrinth seal and a method for mounting a measuring arrangement.
- Rotation angle changes can be detected by means of incremental encoders and associated incremental sensors. Absolute values for the angle of rotation can be recorded with the aid of absolute encoders and associated absolute sensors.
- the measuring arrangements for detecting rotational movements can be very expensive.
- An object of the invention is to allow detection of a rotational movement even with large dimensions of the relatively rotating machine parts with reasonable effort.
- the measuring arrangement according to the invention for detecting a rotational movement between a first machine part and a second machine part has an encoder wheel which is non-rotatably connected to the first machine part, an absolute encoder which is non-rotatably connected to the first machine part, an incremental sensor which is non-rotatable with the second Machine part is connected and an absolute sensor which is rotatably connected to the second machine part, on.
- the encoder wheel has an alternating sequence of recesses and webs in the circumferential direction.
- the absolute encoder is attached to the sender wheel and marks a circumferential position of the sender wheel.
- the incremental sensor scans the encoder wheel and generates an incremental signal.
- the absolute sensor scans the absolute encoder and generates an absolute signal.
- the invention has the advantage that it enables a precise detection of a rotational movement between two machine parts with relatively little effort. It is particularly advantageous that the measuring arrangement according to the invention can be used efficiently and flexibly, even with large dimensions of the machine parts, since the Absolute encoder is attached to the sender wheel and thus no costly measures for attachment to another location must be made and in this respect are no requirements to be placed on the installation environment.
- the absolute encoder can be designed as a separate component.
- the absolute sensor can be arranged within the grid defined by the recesses and webs at any desired circumferential position of the encoder wheel. This makes it possible, for example, to mount the absolute encoder in the context of mounting the measuring arrangement on a position that is particularly accessible or that is particularly suitable for other reasons.
- the absolute encoder can be releasably attached to the encoder wheel. This has the advantage that the position, the circumferential position of the encoder wheel, which is marked by the absolute encoder, with little effort and without damaging the encoder wheel and the absolute encoder can be changed again. This is especially noticeable when an exchange of the encoder wheel is associated with high costs.
- the absolute encoder can be positively connected to the encoder wheel. A form-locking connection is usually very durable and can train and solve with reasonable effort.
- the absolute encoder can engage in one of the recesses of the encoder wheel.
- the absolute encoder can be designed asymmetrically such that it can be fastened exclusively in a predetermined orientation on the encoder wheel. In this way, assembly errors and consequential damage can be avoided.
- the absolute encoder can be designed, for example, as an elastic element.
- the absolute encoder can be clamped in the recess of the encoder wheel due to its elasticity.
- the absolute encoder is made of spring steel, in particular of a stainless spring steel.
- the absolute encoder is designed as a U-shaped part, in particular made of sheet metal. Such a shape can be realized with little effort and also offers the possibility to provide a defined elasticity.
- the recesses and / or the webs of the encoder wheel can be arranged equidistantly in the circumferential direction. This enables a particularly simple evaluation of the incremental signal generated by the incremental sensor.
- the encoder wheel may have projections which protrude into the recesses, in particular in the axial direction. These projections can be used for the formation of positive connection with the absolute encoder.
- the sender wheel may be composed of several segments in the circumferential direction. This is particularly advantageous for a large-sized encoder wheel.
- the transmitter wheel can also be made of spring steel, in particular of stainless spring steel.
- the transmitter wheel is designed as a component of a labyrinth seal. This has the advantage that no additional component must be provided for the sender wheel and thus eliminates the cost of manufacturing and handling and the space required for an additional component.
- the labyrinth seal can be provided for example for sealing a bearing assembly of a wind turbine.
- the incremental sensor and the absolute sensor may have different scanning directions. This allows a compact design of the measuring arrangement according to the invention.
- the scanning directions of the incremental sensor and the absolute sensor make an angle of at least 45 degrees with each other, and in particular are oriented orthogonal to each other.
- the incremental sensor can be arranged, for example, so that its scanning direction is radial with respect to the encoder wheel.
- the absolute sensor may be arranged so that its scanning direction is axial with respect to the encoder wheel.
- the incremental sensor and the absolute sensor can be connected to a common holding device. be arranged. This reduces the assembly effort and ensures precise positioning of the incremental sensor and the absolute sensor relative to one another.
- the absolute sensor can be arranged displaceably in the circumferential direction of the encoder wheel. This makes it possible to set the circumferential position of the encoder wheel marked by the absolute sensor.
- the measuring arrangement according to the invention can be designed for a measuring operation in which the first machine part rests and the second machine part carries out a rotary movement. With such a variant, there is no risk that the absolute sensor will detach from the encoder wheel as a result of the rotational movement.
- the invention further relates to a bearing arrangement of a wind energy plant with the measuring arrangement according to the invention.
- the invention relates to a labyrinth seal, with a first ring and a second ring, which overlap axially and together form a sealing labyrinth.
- the first ring is formed as a part of a sensor wheel and has an alternating sequence of recesses and webs in the circumferential direction.
- the labyrinth seal according to the invention has the advantage that it is designed without significant additional effort as a donor for detecting a rotational movement. The material and assembly costs for an additional encoder can thus be saved.
- an absolute encoder can be attached, which marks a circumferential position of the encoder wheel. In this way, the conditions for absolute rotation angle detection are created by simple means.
- the labyrinth seal may have an outer diameter of at least 0.3 m, preferably at least 1 m.
- the invention further relates to a method for mounting a measuring arrangement for detecting a rotational movement between a first machine part and a second machine part.
- a transmitter wheel which has an alternating sequence of recesses and webs in the circumferential direction, is non-rotatably connected to the first machine part.
- an absolute encoder is attached to the sender wheel in such a way that it marks a circumferential position of the sender wheel.
- an incremental sensor which scans the transmitter wheel, rotatably connected to the second machine part and it is an absolute sensor which scans the absolute encoder rotatably connected to the second machine part.
- the second machine part can be brought into a desired rotational angle position relative to the first machine part, before the absolute encoder is attached to the encoder wheel.
- the absolute encoder can be attached to the encoder wheel in such a way that the marked circumferential position of the encoder wheel is within a circumferential region of the second machine part, within which the absolute sensor can be adjusted.
- the absolute sensor can be adjusted to the education of the rotationally fixed connection with the second machine part to the marked by the absolute encoder circumferential position of the encoder wheel.
- any rotational angular position of the second machine part relative to the first machine part can be marked with high precision by the absolute encoder within a through the Recesses and webs of the encoder wheel predetermined grid is arranged and a fine adjustment is made by circumferential displacement of the absolute sensor.
- FIG. 1 shows an exemplary embodiment of a bearing arrangement with an inventive measuring arrangement in side view
- FIG. 2 shows the exemplary embodiment illustrated in FIG. 1 in a sectional view
- FIG. 4 shows an enlarged detail from FIG. 3,
- FIG. 5 shows a further enlarged detail from FIG. 3,
- Figure 6 shows an embodiment of the absolute encoder in perspective
- FIG. 7 an embodiment of the sensor group in perspective view
- FIG. 8 shows an embodiment of the sensor group in the mounted state in a perspective view and 9 shows the embodiment of the sensor group shown in Figure 8 in a sectional view.
- Figure 1 shows an embodiment of a bearing assembly with an inventively designed measuring arrangement in side view. An associated sectional view is shown in FIG. 2.
- the bearing assembly comprises a roller bearing 1, which is formed in the illustrated embodiment as a double-row spherical roller bearings.
- the rolling bearing 1 may for example be designed as a double-row tapered roller bearing, or have another single or multi-row design.
- the rolling bearing 1 is arranged in a housing 2 and serves for the rotatable mounting of a shaft 3 or another machine part about a rotation axis 4.
- the rolling bearing 1 can be used for mounting a rotor shaft of a wind power plant.
- the housing 2 has two axially extending supports 5 for mounting in an installation environment.
- As the axial direction in each case a direction parallel to the axis of rotation 4 of the rolling bearing 1 is considered, unless otherwise stated.
- the rolling bearing 1 is fixed by means of a clamping nut 6 on the shaft 3 and has an inner ring 7, an outer ring 8 and between the inner ring 7 and the outer ring 8 rolling rolling elements 9.
- FIGS. 1 and 2 show an encoder wheel 10, an absolute encoder 11 and a sensor group 12, which are components of the measuring arrangement according to the invention for detecting the rotational movement of the shaft 3.
- the encoder wheel 10 and the absolute encoder 1 1 are rotatably connected to the housing 2.
- the sensor group 12 is rotatably connected to the shaft 3.
- the structure and operation of the measuring arrangement according to the invention will be explained in more detail below.
- the rolling bearing 1 shown in Figures 1 and 2 may have very large outer dimensions and have an outer diameter of more than 0.3 m, in particular even more than 1 m. In the illustrated embodiment, the rolling bearing 1, for example, an outer diameter of 1.7 m and an inner diameter of 1.3 m.
- Figure 3 shows an embodiment of the encoder wheel 10 in a sectional view. Enlarged sections of Figure 3 are shown in Figures 4 and 5.
- the encoder wheel 10 has a centrally perforated disc 13 and a radially outer ring 14 and a radially inner ring 15.
- the rings 14, 15 are coaxially and perpendicularly secured to the disc 13 and extend differently far in the axial direction, wherein the radially outer ring 14 has a greater axial extent than the radially inner ring 15.
- the radially outer ring 14 has equidistant over its circumference distributed recesses 16, which are separated from each other in the circumferential direction by webs 17.
- the recesses 16 can be produced for example by punching.
- each recess 16 protrude from two opposite sides of two axial projections 18 into it.
- the axial projections 18 are asymmetrical, i. H. not centrally located in the recesses 16.
- the encoder wheel 10 may be made of sheet metal, in particular of a spring steel. Preferably, a stainless spring steel is used.
- the disc 13 of the encoder wheel 10 may be composed in the circumferential direction of a plurality of segments, which are connected to each other for example by a welded joint.
- the rings 14, 15 may be formed segmented.
- the encoder wheel 10 may be formed as a component of a labyrinth seal, which seals the rolling bearing 1 axially.
- the rings 14 and 15 are components of a labyrinth seal.
- Figure 6 shows an embodiment of the absolute encoder 1 1 in perspective view.
- the absolute encoder 1 1 is U-shaped and has two legs 19 and 20, which can be approximated by overcoming an elastic restoring force.
- the leg 19 is extended by a donor surface 21 and has an opening 22 and an opening 23.
- the leg 20 has an opening 24 and an opening 25.
- the openings 22, 24 are used to attach the absolute encoder 1 1 on the encoder wheel 10 and each take an axial projection 18 of the encoder wheel 10.
- the apertures 22, 24 are matched with respect to their dimensions to the axial projections 18 in the recesses 16 of the encoder wheel 10 and asymmetrically formed in the same way as the axial projections 18. This ensures that the absolute encoder 1 1 only right in one of the recesses 16 of the encoder wheel 10 can be fixed.
- the absolute encoder 1 1 can be made of sheet metal, in particular of a spring steel.
- FIG. 7 shows an embodiment of the sensor group 12 in a perspective view.
- the sensor group 12 has a double-angled holder 26, to which an incremental sensor 27 and an absolute sensor 28 are attached.
- the incremental sensor 27 and the absolute sensor 28 are arranged next to one another and tilted relative to one another in such a way that their scanning directions are oriented orthogonal to one another.
- a slot 29 is formed, which serves the attachment and adjustment of the sensor group 12.
- the incremental sensor 27 and the absolute sensor 28 may each be designed as inductive sensors which, depending on whether or not a metallic surface is arranged in front of the sensor within a scanning range in the scanning direction, generate different signal levels.
- Figure 8 shows an embodiment of the sensor group 12 in the assembled state in a perspective view. An associated sectional view is shown in FIG. 9.
- the rotation angle between the shaft 3 and the housing 2 has been selected such that the absolute sensor 28 is arranged adjacent to the encoder surface 21 of the absolute encoder 11.
- the absolute encoder 1 1 is arranged in one of the recesses 16 of the encoder wheel 10 and by the engagement of the axial projections 18 of the encoder wheel 10 in the openings 22, 24 of the absolute encoder 1 1, which is maintained by the elastic restoring force of the absolute encoder 1 1, positively fixed.
- a clamping screw 30 between the openings 23, 25 of the absolute encoder 1 1, the legs 19, 20 of the absolute encoder 1 1 can be approximated by overcoming the elastic restoring force and so the positive engagement can be solved.
- the clamping screw 30 thus facilitates the assembly and disassembly of the absolute encoder 1 1 on the encoder wheel 10.
- the clamping screw 30 may also be designed so that it allows spreading of the legs 19, 20 of the absolute encoder 1 1 and thereby ensures the positive engagement.
- the clamping screw 30 is not absolutely necessary and therefore can be omitted.
- the radially outer ring 14 and the radially inner ring 15 of the encoder wheel 10 form a sealing labyrinth with a radially middle ring 31 which is arranged between the rings and is connected in a rotationally fixed manner to the shaft 3.
- the encoder wheel 10 is thus formed as part of a labyrinth seal.
- the holder 26 of the sensor group 12 is screwed by means of two fastening screws 32 which are guided through the slot 29 with the clamping nut 6 and thereby rotationally fixed to the shaft 3. Since the slot 29 extends in the circumferential direction of the clamping nut 6, the holder 26 and thus the entire sensor group 12 can be moved slightly in the circumferential direction.
- the incremental sensor 27 is radially aligned relative to the axis of rotation 4 of the rolling bearing 1, ie its scanning direction extends radially.
- the absolute sensor 28 is axially aligned relative to the axis of rotation 4 of the bearing 1, d. H. its scanning direction extends axially, so that the encoder surface 21 of the absolute encoder 1 1 can be scanned.
- the detection of the rotational movement of the shaft 3 with the measuring arrangement according to the invention can be carried out as follows:
- the sensor group 12 rotates, that is, both the incremental sensor 27 and the absolute sensor 28, with the shaft 3 with, the encoder wheel 10 and attached thereto absolute sensor 28 remain stationary.
- the scanning region alternately covers recesses 16 and webs 17 of the encoder wheel 10.
- this generates different signals.
- the incremental sensor 27 outputs an incremental signal which varies in the same manner as the position of the scanning portion of the incremental sensor 27 relative to the recesses 16 and lands 17 of the sender wheel 10.
- the rotation angle change and thus, for example, the current speed of the shaft 3 can be determined.
- An Er Averaging an absolute value for the angle of rotation, ie the current rotational angle position, is only possible if at least one previous rotational angular position is known, which can be used as a reference value.
- absolute rotation angles can not be determined with the incremental sensor 27 since, given identical rotational movement, it always delivers an identical incremental signal, regardless of which absolute angle of rotation the shaft 3 has in each case.
- the absolute sensor 28 determines absolute values for the angle of rotation and thus, for example, the respective rotational angular position of the shaft 3. This is achieved in that the absolute sensor 28 scans the encoder surface 21 of the absolute encoder 1 1, which is arranged on a single, defined circumferential position of the encoder wheel 10 and thus marks this circumferential position and the associated rotational angle position. With each revolution of the shaft 3, the absolute sensor 28 thus provides an absolute signal when passing the marked rotational angular position, d. H. the absolute sensor 28 outputs an absolute angle of rotation once per revolution.
- the absolute signal of the absolute sensor 28 can be used as a reference in the evaluation of the incremental signal of the incremental sensor 27.
- the absolute rotation angle can be determined at any time.
- at least a one-time adjustment of the measuring arrangement relative to the machine part is required. This adjustment can be carried out in the context of the assembly process described below.
- the housing 2, the rolling bearing 1 and the shaft 3 including the machine part are mounted in a conventional manner.
- the encoder wheel 10 is fixed in any rotational angle position on the housing 2.
- the shaft 3 is rotated in such a way that the machine part precisely in a predetermined rotation. angle position is arranged.
- the absolute encoder 1 1 is arranged and fixed in the recess 16 of the encoder wheel 10 which comes closest to the intended mounting position of the sensor group 12, more precisely the absolute sensor 28. This ensures that in the predetermined rotational angular position of the machine part, the encoder surface 21 of the absolute encoder 1 1 is arranged at least in the vicinity of the sensing surface of the absolute sensor 28.
- the sensor group 12 is first loosely screwed with the mounting screws 32 and then moved by means of the slot 29 in the holder 26 of the sensor group 12 in the circumferential direction until the absolute sensor 28 delivers an absolute signal.
- the holder 26 and thus also the absolute sensor 28 are permanently fixed by tightening the mounting screws.
- the absolute sensor 28 outputs an absolute signal each time the machine part is in the predetermined rotational angular position.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Indicating Or Recording The Presence, Absence, Or Direction Of Movement (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102009051353A DE102009051353A1 (de) | 2009-10-30 | 2009-10-30 | Messanordnung zur Erfassung einer Drehbewegung |
PCT/EP2010/066301 WO2011051363A2 (de) | 2009-10-30 | 2010-10-28 | Messanordnung zur erfassung einer drehbewegung |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2494314A2 true EP2494314A2 (de) | 2012-09-05 |
Family
ID=43827595
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP10771110A Withdrawn EP2494314A2 (de) | 2009-10-30 | 2010-10-28 | Messanordnung und -verfahren zur erfassung einer drehbewegung sowie labyrinthdichtung |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP2494314A2 (de) |
DE (1) | DE102009051353A1 (de) |
WO (1) | WO2011051363A2 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR3035695B1 (fr) | 2015-04-29 | 2017-11-24 | Skf Ab | Roulement instrumente auto-ajustable et systeme mecanique equipe d'un tel roulement |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6045804B2 (ja) * | 1978-02-28 | 1985-10-12 | 日本電気株式会社 | 角度検出器 |
JPS61120919A (ja) * | 1984-11-17 | 1986-06-09 | Nissan Motor Co Ltd | クランク角度検出器 |
EP0309853A1 (de) * | 1987-09-30 | 1989-04-05 | Siemens Aktiengesellschaft | Optischer Impulsgeber für eine elektromotorische Antriebsanordnung |
AT394781B (de) * | 1989-02-03 | 1992-06-25 | Rsf Elektronik Gmbh | Inkrementales messsystem |
JPH02248811A (ja) * | 1989-03-22 | 1990-10-04 | Fuji Heavy Ind Ltd | 車両用舵角センサの絶対舵角検出方法 |
DE4438947C2 (de) * | 1994-10-31 | 1998-01-15 | Freudenberg Carl Fa | Dichtungsanordnung |
GB9605278D0 (en) * | 1996-03-13 | 1996-05-15 | Renishaw Plc | Opto-electronic scale reading apparatus |
DE19819664A1 (de) * | 1998-05-02 | 1999-11-04 | Eaton Controls Gmbh | Vorrichtung zur Bestimmung des Maßes der Verdrehung zwischen zwei Teilen |
US6774622B2 (en) * | 2002-04-29 | 2004-08-10 | Delphi Technologies, Inc. | Vehicle wheel bearing, wheel-speed sensor mechanism assembly, and wheel speed sensor |
JP2005233870A (ja) * | 2004-02-23 | 2005-09-02 | Ntn Corp | 原点検出機能付き光学式回転センサおよび回転センサ付き軸受 |
JP2005256880A (ja) * | 2004-03-10 | 2005-09-22 | Ntn Corp | センサ付軸受 |
-
2009
- 2009-10-30 DE DE102009051353A patent/DE102009051353A1/de not_active Withdrawn
-
2010
- 2010-10-28 WO PCT/EP2010/066301 patent/WO2011051363A2/de active Application Filing
- 2010-10-28 EP EP10771110A patent/EP2494314A2/de not_active Withdrawn
Non-Patent Citations (1)
Title |
---|
See references of WO2011051363A2 * |
Also Published As
Publication number | Publication date |
---|---|
WO2011051363A2 (de) | 2011-05-05 |
DE102009051353A1 (de) | 2011-05-12 |
WO2011051363A3 (de) | 2012-01-19 |
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