WO2005124285A1 - 磁気式エンコーダ装置 - Google Patents
磁気式エンコーダ装置 Download PDFInfo
- Publication number
- WO2005124285A1 WO2005124285A1 PCT/JP2005/008598 JP2005008598W WO2005124285A1 WO 2005124285 A1 WO2005124285 A1 WO 2005124285A1 JP 2005008598 W JP2005008598 W JP 2005008598W WO 2005124285 A1 WO2005124285 A1 WO 2005124285A1
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- WIPO (PCT)
- Prior art keywords
- rotation
- magnetic field
- signal
- permanent magnet
- encoder device
- Prior art date
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- 230000005291 magnetic effect Effects 0.000 title claims abstract description 150
- 238000001514 detection method Methods 0.000 claims description 59
- 239000003302 ferromagnetic material Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 2
- 239000011800 void material Substances 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 8
- 230000002093 peripheral effect Effects 0.000 description 7
- 229910000859 α-Fe Inorganic materials 0.000 description 4
- 229910000975 Carbon steel Inorganic materials 0.000 description 2
- 239000010962 carbon steel Substances 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 239000000696 magnetic material Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000005355 Hall effect Effects 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 244000145845 chattering Species 0.000 description 1
- 230000005294 ferromagnetic effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
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- 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
- G01D5/14—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 the magnitude of a current or voltage
- G01D5/142—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 the magnitude of a current or voltage using Hall-effect devices
- G01D5/145—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 the magnitude of a current or voltage using Hall-effect devices influenced by the relative movement between the Hall device and magnetic fields
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/30—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring angles or tapers; for testing the alignment of axes
-
- 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
- G01D2205/00—Indexing scheme relating to details of means for transferring or converting the output of a sensing member
- G01D2205/20—Detecting rotary movement
- G01D2205/26—Details of encoders or position sensors specially adapted to detect rotation beyond a full turn of 360°, e.g. multi-rotation
Definitions
- the present invention relates to a magnetic encoder device that detects a rotational position of a motor used in an industrial robot, an NC machine tool, and the like, and in particular, detects a multi-rotation amount in addition to detecting an absolute position within one rotation angle.
- a magnetic encoder device that detects a rotational position of a motor used in an industrial robot, an NC machine tool, and the like, and in particular, detects a multi-rotation amount in addition to detecting an absolute position within one rotation angle.
- a magnetic encoder detects a magnetic field of a permanent magnet fixed to the rotating body, magnetized in one direction perpendicular to the rotation axis of the rotating body, with a magnetic field detecting element, and detects an angle within one rotation.
- An apparatus is disclosed. (For example, see Patent Document 1).
- FIG. 8 is a perspective view of a conventional magnetic encoder device.
- 1 is a rotating body
- 2 is a permanent magnet constituting a disk-shaped magnetized body fixed to an end of the rotating body 1
- a permanent magnet 2 is perpendicular to the axial direction of the rotating body 1. It is magnetized in one direction.
- 3 is a ring-shaped fixed body provided on the outer peripheral side of the permanent magnet 2
- 4 is provided concentrically with respect to the rotation center of the rotating body 1 and is arranged at equal intervals in the circumferential direction of the fixed body 3.
- the magnetic field detecting element includes four magnetic field detecting elements 41, 42, 43, and 44. These magnetic field detecting elements 4 are opposed to the outer peripheral surface of the permanent magnet 2 via a gap, and are shifted from each other by 90 degrees in electrical angle to form an A-phase detecting element 41 and a B-phase detecting element 42.
- a phase detection element is shifted by 180 degrees in electrical angle with respect to the A phase detection element 41.
- the element 43 is shifted by 180 degrees in electrical angle with respect to the B-phase
- FIG. 9 is a block diagram of a signal processing circuit.
- reference numeral 5 denotes a signal processing circuit, which includes differential amplifiers 51 and 52 and an angle calculation circuit 53.
- the magnetic field detection element 4 detects the magnetic field generated by the permanent magnet 2 and generates a sine of one cycle per rotation with respect to the rotation angle. Outputs a wavy signal.
- An encoder that outputs a signal of one cycle per rotation in this way is called an IX-type encoder.
- the differential amplifier 51 receives the A1 signal (V), which is the detection signal from the A-phase
- the differential signal V of the signal is output.
- the differential signals V and V are signals that are 90 degrees out of phase with each other and b a b
- the angle calculation circuit 53 calculates the ar C tan (V ZV) from the differential signals V and V, and
- the magnetic field generated by the permanent magnet magnetized in one direction is detected by the magnetic field detecting element, and the angle is calculated by the signal processing circuit to detect the angle within one rotation.
- Patent Document 1 Japanese Patent Application No. 10-541482
- the conventional IX-type encoder has no means to detect the amount of multiple rotations, and only detects angles within one rotation.
- a multi-rotation detection circuit is added to the signal processing circuit of the conventional IX-type encoder, and the signal from the magnetic field detection element 4 is input to the multi-rotation detection circuit to reduce the multi-rotation amount. It is possible to detect.
- the magnetic field detecting element 4 and the added multi-rotation detection circuit are connected continuously. Need to be energized.
- the power consumption is required to be extremely low.
- the present invention has been made in view of such problems, and can detect a large number of rotations with low power consumption, can operate continuously for a long time only with a battery power supply, and can provide an outer rotor type motor.
- An object of the present invention is to provide a small, thin, and long-life magnetic encoder device capable of detecting a large number of rotations.
- a magnetic encoder device is configured as follows.
- the invention according to claim 1 provides a permanent magnet that is magnetized in one direction perpendicular to the rotation axis of the rotating body and is fixed to the rotating body, and faces the permanent magnet via a gap to the fixed body.
- a magnetic encoder device provided with a mounted magnetic field detecting element and a signal processing circuit for processing a signal of the magnetic field detecting element force
- the magnetic field detecting element detects at least two one-rotation angles within one rotation.
- a signal processing circuit for generating an angle signal within one rotation from a detection signal of the single-turn magnetic field detecting element.
- the rotating body and the permanent magnet form a ring shape
- a ring-shaped magnetic yoke is formed around the permanent magnet
- the fixed body is disposed inside the rotating body. It was done.
- the fixed body has a ring shape and is made of a ferromagnetic material.
- the multi-rotation magnetic field detecting element is a magnetoresistive element or a Hall element.
- the multi-turn magnetic field detecting element is arranged in a circumferential direction of the permanent magnet.
- the multi-rotation magnetic field detecting element is disposed on a side surface of the permanent magnet via a gap in an axial direction of the rotating body.
- a multi-rotation magnetic field detection element and a multi-rotation signal processing circuit are provided separately from the angle detection means within one rotation, which comprises a one-rotation magnetic field detection element and a one-rotation signal processing circuit.
- Multi-rotation detection means is added, so when the external power supply is shut off, backup power only needs to be supplied to the multi-rotation detection means, so the multi-rotation amount can be detected with extremely small power and used as a knock-up power supply. It is not necessary to frequently replace the battery, etc., so long-term continuous operation is possible.
- the rotating body and the permanent magnet have a ring shape, and the fixed body is arranged inside the rotating body. Can be detected.
- a hollow magnetic encoder device capable of detecting a multi-rotation amount can be configured.
- the external dimensions are greatly increased even if the multi-rotation function is added. Does not occur. Therefore, even if the multi-rotation function is added to the device to which the conventional technology is already applied, the application to the device is not limited due to the external shape. Also, since there is no mechanical contact portion, a long-life and highly reliable magnetic encoder device can be realized.
- the multi-rotation magnetic field detecting element is arranged in the remaining space on the outer peripheral portion of the permanent magnet in which the one-rotation magnetic field detecting element is arranged, so that it can be configured to be thin. The thickness in the radial direction can be reduced.
- FIG. 1 is a perspective view of a magnetic encoder device showing a first embodiment of the present invention.
- FIG. 2 is a block diagram of a multi-rotation signal processing circuit of the magnetic encoder device according to the present invention.
- FIG. 3 is an operation explanatory diagram showing a relationship between a multi-rotation signal and an angle signal within one rotation.
- FIG. 4 is a perspective view of a magnetic encoder device showing a second embodiment of the present invention.
- FIG. 5 is a perspective view of a magnetic encoder device according to a third embodiment of the present invention.
- FIG. 6 is a perspective view of a magnetic encoder device showing a fourth embodiment of the present invention.
- FIG. 7 is a diagram showing a configuration of a fixed body part according to a fifth embodiment of the present invention.
- FIG. 8 is a perspective view of a conventional magnetic encoder device.
- FIG. 9 is a block diagram of a signal processing circuit of a conventional magnetic encoder device.
- FIG. 1 is a perspective view of a magnetic encoder device according to a first embodiment of the present invention.
- 1 is a rotating body
- 2 is a permanent magnet
- 3 is a fixed body
- 4 is a 1-turn magnetic field detecting element
- 5 is a 1-turn signal processing circuit
- 6 is a multi-turn magnetic field detecting element
- 7 is a multi-turn signal. It is a processing circuit.
- the configurations of the rotating body 1, the permanent magnet 2, the fixed body 3, the one-turn magnetic field detecting element 4, and the one-rotation signal processing circuit 5 are the same as those of the related art, and thus the description thereof is omitted.
- the permanent magnet 2 is formed of a ferrite-based magnet and has a two-pole configuration in which the permanent magnet 2 is magnetized parallel to one direction perpendicular to the axis of the rotating body 1.
- the size of the permanent magnet 2 is 3 mm in diameter and lmm in thickness.
- the multi-rotation magnetic field detecting element 6 is composed of two magnetoresistive elements, an Am phase detecting element 61 and a Bm phase detecting element 62, and is arranged on the outer peripheral surface of the permanent magnet 2 on the disk with a gap therebetween, and Also, the phase is shifted by about 90 degrees in electrical angle.
- the position between the Bm phase detection elements 62 may be a position having an electrical angle of 10 to 170 degrees.
- the multi-rotation signal processing circuit 7 processes the Am phase signal and the Bm phase signal detected from the multi-rotation magnetic field detection element 6 to generate a multi-rotation signal.
- FIG. 2 is a block diagram of the multi-rotation signal processing circuit 7.
- 71 and 72 are amplifiers, and 73 is a counter.
- the present invention differs from the prior art in that the multi-rotation magnetic field detecting element 6 and the multi-rotation signal processing circuit are different. Road 7 is provided.
- FIG. 3 is an operation explanatory diagram showing a relationship between a multi-rotation signal and an angle signal within one rotation.
- the angle signal within one rotation is an angle signal that changes from 0 to (dn- ⁇ ) for one rotation of the rotating body, where the resolution of this signal is dn.
- the data dc of the angle signal within one rotation when the multi-rotation signal changes is stored in advance, and the data of the angle signal within one rotation at the detection point is stored. If d is greater than dc, add ⁇ (d—dc) Zdn ⁇ to the multi-turn signal k. If d is less than dc, add ⁇ (d + dn—dc) Zdn ⁇ to the multi-turn signal k. It is obtained by doing.
- the multi-rotation magnetic field detection element 6 and the multi-rotation signal processing circuit 7 are supplied with power from the battery, hold the multi-rotation amount data, and continue to detect the multi-rotation amount.
- Multi-rotation detection does not require higher detection accuracy than angle signals within one rotation, and can be detected with low power. At this time, power is not supplied to the magnetic field detecting element 4 and the signal processing circuit 5, and an angle signal within one rotation cannot be detected. Even if the external power supply is shut off, the magnetic field detection element for one rotation and the detection signal can be reproduced after the power is restored.
- the multi-rotation magnetic field detecting element 6 and the multi-rotation signal A multi-rotation detection means consisting of a processing circuit 7 is added.
- the multi-rotation amount can be detected with an extremely small voltage and power.
- the power consumption of the backup power supply could be reduced to about 0.3 mW. This is approximately 1/500 of the power consumption when multi-rotation is detected by adding a multi-rotation detection circuit to the conventional magnetic encoder device and sharing the signal of the magnetic field detection element.
- a multi-rotation magnetoresistive element 6 that is small and has low power consumption is the same circle as the one-rotation magnetic field detecting element 4. Since it is arranged in the space on the circumference, there is no increase in dimensions in the axial and radial directions of the rotating shaft, and a compact structure can be maintained.
- a ferrite-based magnet was used as the permanent magnet. May be.
- the signals are adjusted using the amplifiers 71 and 72 in the multi-rotation signal processing circuit 7, it is obvious that the same effect can be obtained by using the comparator.
- the comparator can be placed near the magnetic field detecting element 6 instead of the multi-rotation signal processing circuit 7. In this case, since the binarized signal, which is the output signal of the comparator, is sent to the multi-rotation signal processing circuit 7, there is an effect that noise resistance can be improved.
- FIG. 4 is a perspective view of a magnetic encoder device according to a second embodiment of the present invention.
- This embodiment is different from the first embodiment in that the multi-rotation magnetic field detecting element 6 is arranged on the outer peripheral surface of the disk-shaped permanent magnet 2 through a gap in the first embodiment, In the embodiment, the point is that the permanent magnet 2 is arranged on a disk-shaped plane with a gap. It should be noted that the rotating shaft 1 was arranged on a plane opposite to the plane on which it was fixed.
- the multi-rotation magnetic field detection element 6 is composed of two Hall elements, an Am phase detection element 61 and a Bm phase detection element 62, and is shifted from the rotation direction of the rotator 1 by approximately 90 degrees with respect to each other. It is fixed to the fixed body 3 with a fixing jig. Surface of permanent magnet 2 and multi-turn magnetic field detection The gap of the element 6 is about lmm.
- the multi-rotation magnetic field detecting element 6 is disposed on the plane on the disk of the permanent magnet 2 opposite to the rotating body 1 via the gap, so that the motor (not shown) rotates.
- the motor not shown
- stable detection is possible even with a small current consumption that does not directly receive the radiant heat from the motor.
- a multi-rotation detecting circuit is added to the signal processing circuit of the conventional magnetic encoder device, and the signal of the magnetic field detecting element within one rotation is shared to reduce the amount of multi-rotation.
- the power consumption can be reduced to about 1/500 compared to the case of detection, and when a battery is used as a knock-up power supply, the time for replacing the battery can be dramatically increased.
- FIG. 5 is a perspective view of a magnetic encoder device according to a third embodiment of the present invention.
- 1 ' is a rotating body
- 2' is a magnetic field generating rotor
- 3 ' is a fixed body
- Reference numeral 21 denotes a ring-shaped permanent magnet
- reference numeral 22 denotes a ring-shaped magnetic yoke arranged around the ring-shaped magnet 21 and made of a magnetic material.
- the magnetic field generating rotor 2 ′ includes a ring-shaped permanent magnet 21 and a ring-shaped magnetic yoke 22.
- 4 is opposed to the ring-shaped permanent magnet 21 via an air gap, and detects the position within one rotation attached to the fixed body 3'.4 are magnetic field detecting elements for one rotation
- 5 is the magnetic field detecting element from the magnetic field detecting element 4.
- a single-rotation signal processing circuit 6 for processing signals is opposed to the ring-shaped permanent magnet 2 via a gap, and is two multi-rotation magnetic field detecting elements attached to the fixed body 3 '.
- the ring-shaped permanent magnet 21 is formed of a ferrite-based magnet, and has a two-pole configuration that is magnetized in one direction parallel to the direction perpendicular to the axis of the rotating body 1.
- the ring-shaped magnetic yoke 22 is made of a ferromagnetic material such as carbon steel.
- the magnetic field generating rotor 22 has the effect of reducing the magnetic resistance and concentrating the magnetic field on the magnetic field detecting element 4 for one rotation and the magnetic field detecting element 6 for multiple rotations, thereby improving the SN ratio of the magnetic field detecting element. it can. It also has the effect of blocking external magnetic noise.
- the material should be ferromagnetic, for example carbon Such as steel.
- the magnetic field detecting element 4 for one rotation also generates four Hall-effect element forces, opposing the inner peripheral surface of the permanent magnet 21 via a gap, and shifting the phase by 90 degrees in electrical angle from each other.
- the B1 phase detection element 42 and further shift the phase by 180 degrees in electrical angle with respect to the A1 phase detection element 41, and shift the phase by 180 degrees in electrical angle with respect to the B1 phase detection element 42.
- a B2 phase detecting element 44 is provided.
- the multi-rotation magnetic field detecting element 6 becomes a magnetoresistive element, and faces the magnetic field generating rotor 2 ′ in the radial direction of the rotating body 1 via a gap, and shifts the phase by approximately 90 degrees in electrical angle with respect to each other.
- a phase detection element 61 and a Bm phase detection element 62 are provided.
- the configurations of the single-rotation signal processing circuit 5 and the multi-rotation processing circuit 7 are the same as those in the first embodiment, and a description thereof will be omitted.
- This embodiment is different from the first embodiment in that the permanent magnet fixed to the rotating body is formed into a ring shape and the permanent magnet is formed in a ring shape in order to detect the multi-rotation amount of the outer rotor type motor.
- a magnetic yoke is formed, and a single-turn magnetic field detecting element 4 and a multi-turn magnetic field detecting element 6 are arranged on a fixed body disposed inside a rotating body.
- the magnetic field generating rotor 2' rotates.
- the magnetic field generated by the magnetic field generating rotor 2 ′ is detected by the magnetic field detecting element 4 for one rotation, and is converted into an angle signal within one rotation by the one-rotation signal processing circuit 5.
- the magnetic field generated by the magnetic field generating rotor 2 ′ is detected by the magnetic field detecting element 6 and converted into a multi-rotation signal by the signal processing circuit 7.
- the method for generating the angle signal within one rotation and the multi-rotation signal is the same as that in the first embodiment, and thus the description thereof is omitted.
- the size of the rotating body in the axial and radial directions is not increased due to the addition of the function of detecting the amount of multiple rotations, so that a compact structure can be maintained, and extremely small power is required for the outer rotor type rotating body. Multi-rotation amount can be detected.
- a Hall element as the magnetic field detecting element, a large output signal can be obtained while the size and shape are small (about 2.5 X 1.5 X 0.6 mm), resulting in excellent noise resistance.
- the shape of the Hall element is small, the thickness of the rotating body in the axial direction can be reduced. Further, since the thickness in the radial direction can be reduced, the hollow diameter can be increased. The structure is optimal for the shape.
- a ferrite-based magnet was used as the ring-shaped permanent magnet, but there is an Sm-Co-based magnet! May be formed.
- FIG. 6 is a perspective view of a magnetic encoder device showing a fourth embodiment of the present invention.
- This embodiment is different from the third embodiment in that the multi-turn magnetic field detecting element 6 is arranged on the outer peripheral surface of the fixed body 3 in the third embodiment, whereas the magnetic field generating rotor in the present embodiment is different from the third embodiment.
- the point is that the rotating body 1 'is fixed to the fixed body 3' by a fixing jig (not shown) through a gap in the axial direction of the rotating body 1 '.
- the multi-rotation amount can be detected with extremely small power with respect to the outer rotor type motor, and the multi-rotation magnetic field detecting element 6 is connected to the magnetic field generation rotor on the side opposite to the rotating body 1 ′.
- the multi-rotation magnetic field detecting element 6 is connected to the magnetic field generation rotor on the side opposite to the rotating body 1 ′.
- a motor not shown
- stable detection is possible even with a small current consumption, so that radiant heat of the motor power is not directly received. Can be.
- FIG. 7 is a diagram showing a configuration of a fixed body part according to a fifth embodiment of the present invention.
- 31 is a ring-shaped fixed body, and 32 is an element holder.
- This embodiment is different from the third embodiment in that the shape of the fixed body is a ring shape. By doing so, the amount of multiple rotations of the outer rotor type motor having the hollow structure can be detected.
- the material of the ring-shaped fixed body 31 was a ferromagnetic material (for example, carbon steel). By doing so, the magnetic resistance is reduced in the same manner as the effect of the ring-shaped magnetic yoke 22 of the third embodiment, and the magnetic field detecting element for one rotation 4 and the magnetic field detecting element for multiple rotations for detecting the position within one rotation of the magnetic field.
- An element holder made of a non-magnetic material was provided between the ring-shaped fixed body 31 and the magnetic field detecting element for one rotation 4 and the magnetic field detecting element for multiple rotations 6. This The element holder not only facilitates the position of the magnetic field detection element but also improves the positional accuracy.
- the amount of multiple rotations can be detected with extremely small electric power with respect to the outer rotor type motor having the hollow structure.
- the present invention makes it possible to detect a multi-rotation amount with a small size and low power consumption, so that the present invention can be applied to a small servo motor which needs to detect an absolute position.
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- General Physics & Mathematics (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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DE112005001382T DE112005001382B4 (de) | 2004-06-16 | 2005-05-11 | Magnetische Codiereinheit |
US11/629,302 US7595635B2 (en) | 2004-06-16 | 2005-05-11 | Small size magnetic encoder unit with low power consumption |
JP2006514669A JP4678371B2 (ja) | 2004-06-16 | 2005-05-11 | 磁気式エンコーダ装置 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004178124 | 2004-06-16 | ||
JP2004-178124 | 2004-06-16 |
Publications (1)
Publication Number | Publication Date |
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WO2005124285A1 true WO2005124285A1 (ja) | 2005-12-29 |
Family
ID=35509795
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2005/008598 WO2005124285A1 (ja) | 2004-06-16 | 2005-05-11 | 磁気式エンコーダ装置 |
Country Status (7)
Country | Link |
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US (1) | US7595635B2 (ja) |
JP (1) | JP4678371B2 (ja) |
KR (2) | KR20070029700A (ja) |
CN (1) | CN1997876A (ja) |
DE (1) | DE112005001382B4 (ja) |
TW (1) | TW200617356A (ja) |
WO (1) | WO2005124285A1 (ja) |
Cited By (3)
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JP2008224283A (ja) * | 2007-03-09 | 2008-09-25 | Yaskawa Electric Corp | 磁気式絶対値エンコーダ装置 |
JP2009079925A (ja) * | 2007-09-25 | 2009-04-16 | Mitsuba Corp | モータ用エンコーダ |
DE102007062780B4 (de) * | 2006-12-28 | 2021-02-11 | Harmonic Drive Systems Inc. | Magnetischer Absolutkodierer |
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EP1883787A4 (en) * | 2005-05-25 | 2013-12-18 | Continental Automotive Canada Inc | DOUBLE POLMS MAGNETIC STRUCTURE WITH TWO 90 DEGREES PHASE SHIFTED MAGNETS FOR POSITION DETECTION IN ONE PLAYER |
WO2009052537A1 (en) * | 2007-10-25 | 2009-04-30 | Sensordynamics Ag Entwicklungs- Und Produktionsgesellschaft | Method and device for contactless sensing rotation and angular position using orientation tracking |
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DE112009000121B4 (de) * | 2008-03-18 | 2013-09-26 | Mitsubishi Electric Corp. | Rotationswinkel-Erfassungsvorrichtung |
US8305073B2 (en) * | 2008-04-23 | 2012-11-06 | Getrag Ford Transmissions Gmbh | Position sensor, position sensor arrangement and method of operating the same by measuring the angular orientation of a local magnetic field vector |
US8947076B2 (en) | 2010-01-18 | 2015-02-03 | Bourns, Inc. | High resolution non-contacting multi-turn position sensor |
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US9417295B2 (en) | 2012-12-21 | 2016-08-16 | Allegro Microsystems, Llc | Circuits and methods for processing signals generated by a circular vertical hall (CVH) sensing element in the presence of a multi-pole magnet |
CN103925933B (zh) * | 2013-01-11 | 2016-12-28 | 江苏多维科技有限公司 | 一种多圈绝对磁编码器 |
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JP6210284B2 (ja) * | 2013-09-18 | 2017-10-11 | 株式会社ジェイテクト | 回転角検出装置 |
TWI640752B (zh) | 2016-11-30 | 2018-11-11 | 財團法人工業技術研究院 | 旋轉感測裝置及旋轉感測方法 |
JP7270395B2 (ja) * | 2019-01-25 | 2023-05-10 | ニデックインスツルメンツ株式会社 | 磁石組立体の製造方法、ならびにエンコーダおよびエンコーダ付きモータ |
CN109870177B (zh) * | 2019-02-15 | 2021-10-08 | 广州极飞科技股份有限公司 | 磁编码器及其校准方法和校准装置、电机以及无人飞行器 |
US11761793B2 (en) | 2020-05-26 | 2023-09-19 | Analog Devices International Unlimited Company | Magnetic sensor package |
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DE69312109T2 (de) * | 1992-02-13 | 1998-01-08 | Japan Servo | Absolutkodierer |
DE9302758U1 (de) | 1993-02-25 | 1994-03-31 | Siemens Ag | Magnetischer Winkellage- und Drehgeschwindigkeitsgeber |
DE4409892A1 (de) * | 1994-03-23 | 1995-09-28 | Bosch Gmbh Robert | Sensor zur Erfassung des Lenkwinkels |
DE4440214C2 (de) | 1994-11-10 | 1997-08-14 | Itt Ind Gmbh Deutsche | Drehgeber mit Hallsensoren |
CN1243956C (zh) | 1997-09-08 | 2006-03-01 | 株式会社安川电机 | 磁编码装置 |
DE19820014A1 (de) * | 1998-05-06 | 1999-11-11 | Heidenhain Gmbh Dr Johannes | Multiturn-Codedrehgeber |
US6433536B1 (en) * | 1998-12-31 | 2002-08-13 | Pacsci Motion Control, Inc. | Apparatus for measuring the position of a movable member |
DE50310186D1 (de) | 2002-10-10 | 2008-09-04 | Ebm Papst St Georgen Gmbh & Co | Vorrichtung zum Erfassen des Absolutwinkels einer Welle |
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2005
- 2005-05-11 JP JP2006514669A patent/JP4678371B2/ja not_active Expired - Fee Related
- 2005-05-11 CN CNA2005800188062A patent/CN1997876A/zh active Pending
- 2005-05-11 WO PCT/JP2005/008598 patent/WO2005124285A1/ja active Application Filing
- 2005-05-11 KR KR1020067023124A patent/KR20070029700A/ko active Application Filing
- 2005-05-11 KR KR1020087017033A patent/KR20080077282A/ko not_active Application Discontinuation
- 2005-05-11 DE DE112005001382T patent/DE112005001382B4/de not_active Expired - Fee Related
- 2005-05-11 US US11/629,302 patent/US7595635B2/en not_active Expired - Fee Related
- 2005-05-19 TW TW094116351A patent/TW200617356A/zh unknown
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JPH0662322U (ja) * | 1993-02-04 | 1994-09-02 | 株式会社三協精機製作所 | アブソリュートエンコーダ装置 |
JP2002506530A (ja) * | 1998-04-18 | 2002-02-26 | ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング | 角度測定用の角度センサ及び方法 |
JP2002228486A (ja) * | 2001-02-05 | 2002-08-14 | Yaskawa Electric Corp | 磁気式エンコーダ |
Cited By (3)
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DE102007062780B4 (de) * | 2006-12-28 | 2021-02-11 | Harmonic Drive Systems Inc. | Magnetischer Absolutkodierer |
JP2008224283A (ja) * | 2007-03-09 | 2008-09-25 | Yaskawa Electric Corp | 磁気式絶対値エンコーダ装置 |
JP2009079925A (ja) * | 2007-09-25 | 2009-04-16 | Mitsuba Corp | モータ用エンコーダ |
Also Published As
Publication number | Publication date |
---|---|
US7595635B2 (en) | 2009-09-29 |
TW200617356A (en) | 2006-06-01 |
US20080054886A1 (en) | 2008-03-06 |
DE112005001382T5 (de) | 2007-05-16 |
JPWO2005124285A1 (ja) | 2008-04-10 |
CN1997876A (zh) | 2007-07-11 |
JP4678371B2 (ja) | 2011-04-27 |
KR20080077282A (ko) | 2008-08-21 |
KR20070029700A (ko) | 2007-03-14 |
DE112005001382B4 (de) | 2009-10-01 |
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