CN1789903A - Pulse generator integrated with rotor angle sensor - Google Patents
Pulse generator integrated with rotor angle sensor Download PDFInfo
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- CN1789903A CN1789903A CNA2005101270526A CN200510127052A CN1789903A CN 1789903 A CN1789903 A CN 1789903A CN A2005101270526 A CNA2005101270526 A CN A2005101270526A CN 200510127052 A CN200510127052 A CN 200510127052A CN 1789903 A CN1789903 A CN 1789903A
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- 230000005355 Hall effect Effects 0.000 claims description 98
- 230000004907 flux Effects 0.000 claims description 85
- 230000005405 multipole Effects 0.000 claims description 42
- 238000001514 detection method Methods 0.000 claims description 30
- 230000005415 magnetization Effects 0.000 claims description 6
- 230000007257 malfunction Effects 0.000 abstract 1
- 230000009931 harmful effect Effects 0.000 description 12
- 230000015572 biosynthetic process Effects 0.000 description 10
- 238000005755 formation reaction Methods 0.000 description 10
- 230000014509 gene expression Effects 0.000 description 10
- 230000009466 transformation Effects 0.000 description 5
- 229910052761 rare earth metal Inorganic materials 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 229910000938 samarium–cobalt magnet Inorganic materials 0.000 description 2
- 230000002950 deficient Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
- F02P7/00—Arrangements of distributors, circuit-makers or -breakers, e.g. of distributor and circuit-breaker combinations or pick-up devices
- F02P7/06—Arrangements of distributors, circuit-makers or -breakers, e.g. of distributor and circuit-breaker combinations or pick-up devices of circuit-makers or -breakers, or pick-up devices adapted to sense particular points of the timing cycle
- F02P7/067—Electromagnetic pick-up devices, e.g. providing induced current in a coil
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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
- G01D5/244—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
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
- H02P6/14—Electronic commutators
- H02P6/16—Circuit arrangements for detecting position
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Power Engineering (AREA)
- Electromagnetism (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
- Ignition Installations For Internal Combustion Engines (AREA)
Abstract
To provide a pulse generator integrated with a rotor angle sensor which is hardly affected by magnetic noise and in which malfunction hardly occurs. The pulse generator 10 integrated with a rotor angle sensor is provided with a multipolar ring magnet 15 for detecting rotation angles; a magnet 16 for generating pulses; a magnetoelectric converting element 17 for detecting rotation angles; and a magnetoelectric converting element 18 for generating pulses. In the pulse generator, the magnet 16 for generating pulses is fixed at a predetermined distance, in the direction of the axis of rotation, from the multipolar ring magnet 15 for detecting rotating angles mounted to the periphery of the rotor 14 in such a way that one magnetic pole of the magnet 16 for generating pulses is located on the side of the axis of rotation of a rotor 14 and that the other magnetic pole of the magnet 16 for generating pulses is located on the side opposite to the axis of rotation of the rotor, and the magnet 13 for magnetic bias is arranged on the side of the magnetoelectric converting element 18 for generating pulses opposite to the magnet 16 for generating pulses.
Description
(the application is dividing an application in first to file 03138447.1.)
Technical field
The present invention relates to the pulse producer one-piece type with rotor angle sensor, particularly can reduce from the magnetic noise of motor produce dysgenic, with the one-piece type pulse producer of rotor angle sensor.
Background technology
Fig. 5 is a synoptic diagram of representing that the one-piece type pulse producer of a kind of and rotor angle sensor in the technology is formerly used.The one-piece type pulse producer 100 of this and rotor angle sensor is made of flux generating unit 101 and magnetoelectricity transformation component 102.Flux generating unit 101 is detected with multipole ring magnet 104 by the rotational angle on the periphery that is installed in rotor 103, and is fixed on detecting with one-piece type pulse generation usefulness magnet 105 formations of multipole ring magnet 104 with rotational angle on the rotor 103.If for instance, described this pulse producer 100 can be as the portfire on the actuating motor applies the signal generator that igniting timing time signal is used on the two-wheeled vehicle to being attached to.
Fig. 6 is that the rotational angle that uses in flux generating unit 101 detects the stereographic map of using the part of magnet 105 with multipole ring magnet 104 and pulse generation.Rotational angle detects with multipole ring magnet 104 along its circumferencial direction, be formed with the N utmost point and the S utmost point with the predetermined space alternating magnetization, and the mode outside pulse generation projects to according to the S utmost point, the N utmost point, the S utmost point with magnet 105 is configured.
Have above-mentioned formation, belong to the one-piece type pulse producer 100 of this and rotor angle sensor of technology formerly, rotation by rotor 103, detect the flux that produces with multipole ring magnet 104 with 106 pairs of rotational angles detections of hall effect devices by rotational angle and implement to detect, and it is transformed to and the corresponding electric signal of this flux density.By this electric signal is implemented metering, can implement to detect to the rotational angle of rotor 103.
On the other hand, when rotor 103 rotates, when making pulse generation be positioned at the position of opposition side with hall effect devices 107 with magnet 105 and pulse generation, will can be not detected by pulse generation with the flux of magnet generation.Along with the rotation of rotor 103, make pulse generation with magnet 105 and pulse generation with hall effect devices 107 when close to each other, detected by pulse generation, and be transformed to and the corresponding electric signal of this flux density with the flux that magnet 105 produces.
Fig. 7 shows rotational angle and detects the flux density (a) of using hall effect devices 107 positions with hall effect devices 106 positions and pulse generation, and the output voltage (b) when detecting with hall effect devices 106 and pulse generation with hall effect devices 107 with Hall IC as rotational angle, with the variation of the rotational angle of rotor 103.Curve C 1 expression rotational angle detects the variation with the flux density at place, hall effect devices 106 positions, and the variation with the flux density at place, hall effect devices 107 positions takes place curve C 2 indicating impulses.The magnetic noise that the flux that curve C 3 expressions are produced by motor causes.Straight line C4a and C4b represent is that when adopting the Hall IC that includes Hall element, amplifier, schmidt trigger loop to detect with hall effect devices 106 and pulse generation with hall effect devices 107 as rotational angle two detect level Th
H, Th
LWhen detecting with hall effect devices 106 positions and pulse generation, rotational angle is positioned at detection level Th with the flux density of the position of hall effect devices 107
HWhen above, it is V with hall effect devices 107 output voltages that rotational angle detects with hall effect devices 106 and pulse generation
LElectric signal.When detecting with hall effect devices 106 positions and pulse generation, rotational angle is positioned at detection level Th with the flux density of hall effect devices 107 positions
LWhen following, it is V with hall effect devices 107 output voltages that rotational angle detects with hall effect devices 106 and pulse generation
HElectric signal.Curve C 15 expressions detect the output signal of using hall effect devices 106 from rotational angle, and curve C 16 expressions are from the output signal of pulse generation with hall effect devices 107.In this wise, Hall IC can be utilized two detection level Th that represented by straight line C4a, C4b
H, Th
L, output signal is switched to voltage V
LWith voltage V
HAs shown in Figure 7, when pulse generation was positioned at position separated from one another (0 °～about 60 °) with magnet 105 and pulse generation with hall effect devices 107, flux density was near 0; When pulse generation is positioned at approximating position (about 60 °) with magnet 105 and pulse generation with hall effect devices 107, this flux density will reach minimum value P1 to the increase of negative value direction, flux density will be to increasing on the occasion of direction and reach maximal value P2 subsequently, yet increase and be changed to minimum value P3 once more to the negative value direction once more.Corresponding to the variation of this flux density, rotational angle detects with hall effect devices 106 and pulse generation and is positioned at detection level Th with hall effect devices 107 in flux density
HWhen above, output voltage is V
LElectric signal.As shown in Figure 7, when the rotor rotation angle was positioned at the scope of P4 to P5, flux density was positioned at and detects level Th with hall effect devices 107 in pulse generation
HMore than, so output voltage is V in this scope
LElectric signal.Utilize this electric signal to produce the pulse signal of pulse producer.
Yet, when pulse generation is positioned at position separated from one another with magnet 105 and pulse generation with hall effect devices 107, flux density will be positioned near 0, so pulse generation will be shown in the curve C among Fig. 73 with hall effect devices 107, can be subjected to harmful effect by the magnetic noise that produces from the flux of motor, owing to have this magnetic noise, so even be positioned at angle P4 to the scope of angle P5, pulse generation also can be positioned at Th with the detection level of hall effect devices 107
HMore than, the expression rotor has rotational angle, therefore has the problem that may cause misoperation.Since use as the two-wheeled vehicle portfire, and the one-piece type this pulse producer 100 of rotor angle sensor be configured in usually actuating motor near, so above-mentioned defective becomes sizable problem on performance.
Summary of the invention
The present invention makes in order to address the above problem, and purpose of the present invention just provides a kind of harmful effect that can reduce the generation of magnetic noise, thereby can reduce the pulse producer one-piece type with rotor angle sensor that misoperation occurs.
According to the of the present invention and one-piece type pulse producer of rotor angle sensor,, can constitute as described below in order to realize above-mentioned purpose.
First kind of pulse producer one-piece type with rotor angle sensor provided by the invention (corresponding with claim 1) comprising: be installed in rotational angle epitrochanterian, that be formed with the N utmost point and the S utmost point with the predetermined space alternating magnetization and detect and to use multipole ring magnet; Be fixed on epitrochanterian pulse generation magnet; Be fixed on rotational angle detect with the pole surface of multipole ring magnet mutually opposed and at a distance of predetermined space locational, rotational angle detected the rotational angle detection hall effect devices that is transformed to electric signal with the flux of multipole ring magnet generation; And be fixed on mutually opposed and be transformed to the pulse generation hall effect devices of electric signal at a distance of locational, the flux that pulse generation is produced with magnet of predetermined space with the pole surface of magnet with pulse generation; It is characterized in that: pulse generation with hall effect devices with pulse generation with the opposite side of magnet, dispose direction of magnetization and pulse generation with the identical magnetic bias magnet of magnet.
If adopt first kind of pulse producer one-piece type with rotor angle sensor, since in pulse generation with hall effect devices and pulse generation with the opposite side of magnet, dispose direction of magnetization and the pulse generation identical magnetic bias magnet of magnet, so can pass through bias magnet, the flux that is applied to the hall effect devices place is implemented predetermined bias treatment, when pulse generation is not positioned at the immediate relative position of pulse generation usefulness hall effect devices place with magnet, flux density is generally negative value, the harmful effect that therefore can reduce to come the magnetic noise of self starting motor to produce.And, can select can further improve the accuracy of detection of paired pulses time of origin as the lower pulse generation hall effect devices of threshold ratio that detects level.
And, owing to be provided with bias magnet, make magnetic field that magnetic field that pulse generation produces with magnet and bias magnet the produce flux flow direction when last opposite,, can obtain rapid big flux variation so compare with the occasion that magnet produces magnetic field with only adopting pulse generation.
Second kind of pulse producer one-piece type provided by the invention (corresponding) with claim 2 with rotor angle sensor, it is characterized in that, on the basis of above-mentioned formation, preferably, the pole orientation that makes magnetic bias use magnet with the pole orientation and the pulse generation of magnet disposes in the opposed mode of homopolarity.
The third pulse producer one-piece type (corresponding) provided by the invention with claim 3 with rotor angle sensor, it is characterized in that, on the basis of above-mentioned formation, preferably, described pulse generation becomes an one magnetic pole to be positioned at rotation axis one side of described rotor with magnet configuration, its another magnetic pole is positioned at a side opposite with described axis of rotor rotation, and fix or apart fix preset distance along rotating shaft direction ground connection mutually arranged side by side with multipole ring magnet with the rotational angle detection on being installed in described rotor periphery, and bias magnet is configured to it and is positioned at described pulse generation with being positioned on the center of rotation direction of described rotor with the magnetic pole of described pulse generation with the opposite side of magnet of hall effect devices, and another magnetic pole is positioned at a side opposite with described rotor center direction.
If adopt the third and the one-piece type pulse producer of rotor angle sensor, owing to make pulse generation be positioned at rotation axis one side of rotor with a magnetic pole of magnet, another magnetic pole is positioned at a side opposite with axis of rotor rotation, pulse generation is fixed at a distance of preset distance along rotating shaft direction with multipole ring magnet with magnet and the rotational angle detection that is installed on the rotor periphery, so can pass through bias magnet, the flux that is applied to the hall effect devices place is implemented predetermined bias treatment, when pulse generation is not positioned at the immediate relative position of pulse generation usefulness hall effect devices place with magnet, flux density is generally negative value, the harmful effect that therefore can reduce to come the magnetic noise of self starting motor to produce.And, can select can further improve the accuracy of detection of paired pulses time of origin as the lower pulse generation hall effect devices of threshold ratio that detects level.
And, owing to be provided with bias magnet, make magnetic field that magnetic field that pulse generation produces with magnet and bias magnet the produce flux flow direction when last opposite,, can obtain rapid big flux variation so compare with the occasion that magnet produces magnetic field with only adopting pulse generation.
The 4th kind of pulse producer one-piece type with rotor angle sensor provided by the invention (corresponding with claim 4) is characterized in that comprising: be installed in the multipole ring magnet of rotational angle detection epitrochanterian, be formed with the N utmost point and the S utmost point with the predetermined space alternating magnetization on periphery; Be fixed on epitrochanterian, along the periphery place magnetized pulse generation ring magnet; Be fixed on rotational angle detect with the pole surface of multipole ring magnet mutually opposed and at a distance of predetermined space locational, rotational angle detected the rotational angle detection hall effect devices that is transformed to electric signal with the flux of multipole ring magnet generation; And be fixed on mutually opposed and be transformed to the pulse generation hall effect devices of electric signal at a distance of locational, the flux that pulse generation is produced with ring magnet of predetermined space with the pole surface of ring magnet with pulse generation; It is characterized in that: the pulse generation ring magnet is to be the N utmost point or the S utmost point according to only making the part in the pole surface, and magnetized magnet is carried out for the mode of another magnetic pole in other zones.
If adopt the 4th kind of pulse producer one-piece type with rotor angle sensor, because the pulse generation ring magnet is to be the N utmost point or the S utmost point according to only making the part in the pole surface, magnetized magnet is carried out for the mode of another magnetic pole in other zones, so when pulse generation is positioned at the pulse generation hall effect devices with other magnetic poles outside the pulse generation magnetic pole on the ring magnet is on the relative position time, flux density is generally negative value (or on the occasion of), therefore can reduce the harmful effect that the external magnetic noise produces.And, can select can further improve the accuracy of detection of paired pulses time of origin as the lower pulse generation hall effect devices of threshold ratio that detects level.
The 5th kind of pulse producer one-piece type provided by the invention (corresponding) with claim 5 with rotor angle sensor, it is characterized in that, preferably, on the basis of above-mentioned formation, rotational angle is detected constitute by a magnet integral body with ring magnet with magnet or pulse generation with ring magnet and pulse generation.
The 6th kind of pulse producer one-piece type provided by the invention (corresponding) with claim 6 with rotor angle sensor, it is characterized in that, preferably, on the basis of above-mentioned formation, it is Hall element or Hall IC that rotational angle detects with hall effect devices and pulse generation hall effect devices.
If adopt the 6th kind of pulse producer one-piece type with rotor angle sensor, because it is Hall element or Hall IC that rotational angle detects with hall effect devices and pulse generation hall effect devices, so can be electric signal with the flux density transform reliably, the paired pulses time of origin be implemented to detect more accurately.
Description of drawings
Fig. 1 is first embodiment of the invention and the pie graph one-piece type pulse producer of rotor angle sensor.
Fig. 2 detects the stereographic map of using the part of magnet with multipole ring magnet and pulse generation for using the rotational angle in the flux generating unit of first embodiment of the invention.
Fig. 3 is in first embodiment of the invention, (a) flux density and (b) curve that changes with the rotor rotation angle of the output voltage of Hall IC.
Fig. 4 detects the stereographic map of using the part of ring magnet with multipole ring magnet and pulse generation for using the rotational angle in the flux generating unit of second embodiment of the invention.
Fig. 5 is formerly in the technology and the synoptic diagram one-piece type pulse producer of rotor angle sensor.
Fig. 6 detects stereographic map with the part of multipole ring magnet and pulse generation usefulness magnet for using rotational angle in technology formerly and the flux generating unit one-piece type pulse producer of rotor angle sensor.
Fig. 7 be technology formerly with the one-piece type pulse producer of rotor angle sensor in, (a) flux density and (b) curve that changes with the rotor rotation angle of the output voltage of Hall IC.
The implication of the Reference numeral among the figure is:
10 with the one-piece type pulse producer of rotor angle sensor
11 flux generating units
12 magnetoelectricity transformation components
13 bias magnets
14 rotors
15 rotational angles detect uses multipole ring magnet
16 pulse generation magnet
17 rotational angles detect uses hall effect devices
18 pulse generation hall effect devices
Embodiment
Below with reference to accompanying drawing, preferred forms of the present invention is described.
The formation that illustrates in embodiment, shape, size and configuration relation only can understand, implement to summarize displaying on the degree of the present invention, and the material of its numerical value and each formation only is for example.Therefore, the present invention is not limited in the embodiment that the following describes, and those skilled in the art can also carry out various distortion on the basis that does not break away from the technological thought that the claim scope limited.
Fig. 1 is first embodiment of the invention and the pie graph one-piece type pulse producer of rotor angle sensor.The pulse producer 10 one-piece type with rotor angle sensor is made of flux generating unit 11, magnetoelectricity transformation component 12 and bias magnet 13.Flux generating unit 11 is detected with multipole ring magnet 15 by the rotational angle that is installed in rotor 14 peripheries, and is fixed on pulse generation magnet 16 formations on the rotor 14 according to detecting with multipole ring magnet 15 with this rotational angle at a distance of the mode of predetermined space.
Fig. 2 uses the rotational angle in flux generating unit 11 for expression and detects the stereographic map of using the part of magnet 16 with multipole ring magnet 15 and pulse generation.Rotational angle detects with multipole ring magnet 15 and is made of in the form of a ring multipole magnet, pulse generation is rotation axis one sides that are positioned at rotor 14 according to a magnetic pole 19 (in Fig. 2 for the S utmost point) with magnet 16, and another magnetic pole 20 (being the N utmost point in Fig. 2) is positioned at the magnet that the mode of a side opposite with the rotation axis of rotor 14 is installed.
The pulse producer 10 one-piece type of above-mentioned formation with rotor angle sensor, rotation by rotor 14, detect the flux that produces with multipole ring magnet 15 with 17 pairs of rotational angles detections of hall effect devices by rotational angle and implement to detect, and be transformed to and the corresponding electric signal of this flux density.By this electric signal is measured, can the rotational angle of rotor 14 be detected.
On the other hand, when rotor 14 rotates, when pulse generation is positioned at the position of opposition side with magnet 16 and pulse generation with hall effect devices 18, not detected with the flux that magnet 16 produces by pulse generation.Along with the rotation of rotor 14, make pulse generation with magnet 16 and pulse generation with hall effect devices 18 when close to each other, detected by pulse generation, and be transformed to and the corresponding electric signal of this flux density with the flux that magnet 16 produces.
Fig. 3 shows rotational angle and detects the flux density (a) of using hall effect devices 18 positions with hall effect devices 17 positions and pulse generation, and the output voltage (b) when detecting with hall effect devices 17 and pulse generation with hall effect devices 18 with Hall IC as rotational angle, with the variation of the rotational angle of rotor 14.Curve C 11 expression rotational angles detect the variation with the flux density of hall effect devices 17 positions, and the variation with the flux density of hall effect devices 18 positions takes place curve C 12 indicating impulses.The variation of the magnetic noise that curve C 13 expression causes from the flux of motor.Two when straight line C14a and C14b represent to adopt the Hall IC that includes Hall element, amplifier, schmidt trigger loop to use hall effect devices 18 as the rotational angle detection with hall effect devices 17 and pulse generation are detected level Th
H, Th
LWhen detecting with hall effect devices 17 positions and pulse generation, rotational angle is positioned at detection level Th with the flux density of hall effect devices 18 positions
HWhen above, it is V with hall effect devices 18 output voltages that rotational angle detects with hall effect devices 17 and pulse generation
LElectric signal.When detecting with hall effect devices 17 positions and pulse generation, rotational angle is positioned at detection level Th with the flux density of hall effect devices 18 positions
LWhen following, it is V with hall effect devices 18 output voltages that rotational angle detects with hall effect devices 17 and pulse generation
HElectric signal.Curve C 15 expressions detect the output signal of using hall effect devices 17 from rotational angle, and curve C 16 expressions are from the output signal of pulse generation with hall effect devices 18.Adopt this form of the composition, Hall IC can be utilized two detection level Th that represented by straight line C14a, C14b
H, Th
L, output signal is switched to voltage V
LWith voltage V
HAs shown in Figure 3, when pulse generation is positioned at position separated from one another (0 °～90 °) with magnet 16 and pulse generation with hall effect devices 18, be negative value owing to bias magnet makes flux density; When pulse generation was positioned at approximating position (more than 90 °) with magnet 16 and pulse generation with hall effect devices 18, to increasing on the occasion of direction, flux density will be towards continuing to increase on the occasion of direction subsequently by negative value for this flux density.When pulse generation is positioned at position separated from one another (130 °～180 °) with magnet 16 and pulse generation once more with hall effect devices 18, flux density will be changed into negative value.When the variation corresponding to this flux density, pulse generation is positioned at detection level Th with the flux density at place, hall effect devices 18 positions
HWhen above, pulse generation is V with hall effect devices 18 output voltages
LElectric signal.That is, when Fig. 3 rotor rotational angle was arranged in the scope of P10 to P11, pulse generation was V with hall effect devices 18 output voltages
LElectric signal, utilize this voltage to be V
LElectric signal produce pulse.
In this wise, pulse generation is configured to the center of rotation direction place that an one magnetic pole 19 is positioned at rotor 14 with magnet 16, another magnetic pole 20 is positioned at the opposite side of center of rotation direction with rotor 14, and detect with multipole ring magnet 15 along rotating shaft direction preset distance and fixing apart with rotational angle on the periphery that is fixed on rotor 14, and be positioned at according to an one magnetic pole on the center of rotation direction of rotor, another magnetic pole is positioned at the bias magnet of installing with the mode of the opposite side of center of rotation direction of rotor 13, can be to being attached to the bias treatment that pulse generation is scheduled to the flux on the hall effect devices 18, thereby when pulse generation is not positioned at pulse generation usefulness hall effect devices 18 immediate relative position places with magnet 16, even the magnetic noise is arranged, because flux density is generally negative value, be positioned at the detection level Th of pulse generation with hall effect devices 18
HBelow, so can not be subjected to the harmful effect that produces from the magnetic noise of motor yet.And, can select to use the lower pulse generation hall effect devices of threshold ratio as detecting level, can further improve the pulse generation accuracy of detection in period.
And, owing to be provided with bias magnet 13, the flux flow direction of the magnetic field that the magnetic field that pulse generation produces with magnet 16 and bias magnet 13 produce when last is opposite, so compare when only adopting pulse generation with magnet 16 generation magnetic fields, can produce rapid big flux variation.
And, by adopting rare earth element magnet to detect with multipole ring magnet 15 and pulse generation magnet 16 as rotational angle, can obtain big flux density, even because bias magnet 13 makes flux density setover towards the negative value direction, when pulse generation with magnet 16 and pulse generation with hall effect devices 18 when close to each other, also can obtain greatly, therefore can implement reliable and high-precision test by the paired pulses time of origin on the occasion of flux density.And, by adopting the SmCo magnet in the rare earth element magnet, can further reduce environment temperature the harmful effect that is produced, stable and paired pulses time of origin enforcement detection accurately.
And in the present embodiment,, yet also can fix according to the mode that the S utmost point is given prominence to toward the outer side so that the outstanding toward the outer side mode of the N utmost point is fixed on pulse generation on the rotor 14 with magnet 16.
Below, to describing of second embodiment of the invention with the one-piece type pulse producer of rotor angle sensor.In the present embodiment, all identical except flux generating unit 11 with first embodiment, so mainly flux generating unit 11 is described below.
Fig. 4 detects the stereographic map of using ring magnet 22 with multipole ring magnet 21 and pulse generation for the rotational angle of using in the flux generating unit 11.At this, rotational angle detects with multipole ring magnet 21 and pulse generation ring magnet 22, is made of ring magnet 21,22 respectively.
Ring magnet 21 (rotational angle detects with multipole ring magnet 21) is made of multipole magnet, ring magnet 22 (pulse generation with ring magnet 22) be so that only some magnetic pole for the N utmost point or the S utmost point be positioned at the outside of annular component, magnetized magnet is carried out for the mode that another magnetic pole is positioned at outside the annular component in other zone.
Because detecting with multipole ring magnet 21 and pulse generation, rotational angle use ring magnet 22 respectively by ring magnet 21,22 constitute, ring magnet 21 (rotational angle detects with multipole ring magnet 21) is made of multipole magnet, ring magnet 22 (pulse generation ring magnet 22) is that only some is the N utmost point, the magnet that other zone constitutes for the S polar region, so when pulse generation is positioned at pulse generation with the relative position of hall effect devices with the magnetic pole outside the pulse generation magnetic pole on the ring magnet, flux density is negative value (or on the occasion of), therefore can reduce the harmful effect that the external magnetic noise produces.And, can select to use the lower pulse generation hall effect devices of threshold ratio as detecting level, can further improve the accuracy of detection of paired pulses time of origin.
And, by detecting with multipole ring magnet 21 and pulse generation ring magnet 22 as rotational angle with rare earth element magnet, can obtain bigger flux density, and by adopting the SmCo magnet in the rare earth element magnet, the harmful effect that can further reduce environment temperature and produced, stable and accurately the paired pulses time of origin implement to detect.
If adopt aforesaid the present invention, can obtain technique effect as described below.
Pulse is taken place to become an one magnetic pole to be positioned at the rotation axis side of rotor with magnet configuration, it is opposition side that another magnetic pole is positioned at respect to axis of rotor rotation, and detect with multipole ring magnet along rotating shaft direction preset distance apart with the rotational angle that is installed in epitrochanterian periphery, thereby can be by bias magnet to being applied to the bias treatment that pulse generation is scheduled to the flux of hall effect devices, so when pulse generation is not positioned at when being immediate relative position place with the pulse generation hall effect devices with magnet, flux density is generally negative value, the harmful effect that the magnetic noise that therefore can reduce to be provided by motor produces.And, if select to use the lower pulse generation hall effect devices of threshold ratio, can also further improve the accuracy of detection of paired pulses time of origin.And, set bias magnet, can make magnetic field that magnetic field that pulse generation produces with magnet and bias magnet the produce flux flow direction when last opposite,, can produce the flux variation of rapid increase so compare with the occasion that magnet produces magnetic field with only adopting pulse generation.Therefore, the present invention can reduce the harmful effect that the magnetic noise produces, thereby reduces the appearance of misoperation.
And, because the pulse generation ring magnet is employing is the N utmost point or the S utmost point according to the part in its pole surface, magnetized magnet is carried out for the mode of another magnetic pole in other zone, so when pulse generation is positioned at the relative position place with magnetic pole outside the pulse generation magnetic pole on the ring magnet and pulse generation with hall effect devices, flux density is negative value (or on the occasion of), therefore can reduce the harmful effect that the external magnetic noise produces.And, can select to use the lower pulse generation hall effect devices of threshold ratio as detecting level, can further improve the accuracy of detection of paired pulses time of origin.
Claims (3)
1. pulse producer one-piece type with rotor angle sensor comprises:
Be installed in epitrochanterian, as on periphery, to be formed with the N utmost point and the S utmost point multipole ring magnet of rotational angle detection with the predetermined space alternating magnetization;
Be fixed on described epitrochanterian, along the magnetized pulse generation ring magnet of periphery;
Be fixed on described rotational angle detect with the pole surface of multipole ring magnet mutually opposed and at a distance of predetermined space locational, described rotational angle detected the rotational angle detection hall effect devices that is transformed to electric signal with the flux of multipole ring magnet generation; And
Be fixed on mutually opposed and be transformed to the pulse generation hall effect devices of electric signal with described pulse generation at a distance of locational, the flux that described pulse generation is produced with ring magnet of predetermined space with the pole surface of ring magnet,
It is characterized in that: described pulse generation ring magnet is that the part with its pole surface is the N utmost point or the S utmost point, and magnetized magnet is carried out for the mode of another magnetic pole in other zones.
2. as claimed in claim 1 and the one-piece type pulse producer of rotor angle sensor is characterized in that: described rotational angle detects and constitutes with the magnet of ring magnet by an integral body with multipole ring magnet and described pulse generation.
3. as claimed in claim 1 or 2 and the one-piece type pulse producer of rotor angle sensor is characterized in that: it is Hall element or Hall integrated circuit that described rotational angle detects with hall effect devices and described pulse generation hall effect devices.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP111742/2002 | 2002-04-15 | ||
| JP2002111742A JP2003307433A (en) | 2002-04-15 | 2002-04-15 | Pulse generator integrated with rotor angle sensor |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB031384471A Division CN1268932C (en) | 2002-04-15 | 2003-04-14 | Pulse generator integrated with rotor anguler transducer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1789903A true CN1789903A (en) | 2006-06-21 |
| CN100387928C CN100387928C (en) | 2008-05-14 |
Family
ID=29394450
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB031384471A Expired - Fee Related CN1268932C (en) | 2002-04-15 | 2003-04-14 | Pulse generator integrated with rotor anguler transducer |
| CNB2005101270526A Expired - Fee Related CN100387928C (en) | 2002-04-15 | 2003-04-14 | Pulse generator integrated with rotor angle sensor |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB031384471A Expired - Fee Related CN1268932C (en) | 2002-04-15 | 2003-04-14 | Pulse generator integrated with rotor anguler transducer |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JP2003307433A (en) |
| CN (2) | CN1268932C (en) |
| ES (1) | ES2208132B1 (en) |
| IT (1) | ITTO20030291A1 (en) |
| TW (1) | TW576894B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102032863A (en) * | 2009-09-24 | 2011-04-27 | 株式会社捷太格特 | Rotational angle sensor, motor, rotational angle detector, and electric power steering system |
| CN108554332A (en) * | 2018-05-15 | 2018-09-21 | 中亚民生科技发展有限公司 | The true quantum haulage capacity wave of N-S vectors is implanted into equipment |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102005022596A1 (en) * | 2005-05-17 | 2006-11-23 | Continental Teves Ag & Co. Ohg | Arrangement for intrinsically safe wheel speed detection |
| JP2006322811A (en) * | 2005-05-19 | 2006-11-30 | Uchiyama Mfg Corp | Magnetic encoder and member to be detected |
| JP5073183B2 (en) * | 2005-07-08 | 2012-11-14 | 日本電産サンキョー株式会社 | Magnetic encoder |
| EP2005118A2 (en) * | 2006-04-10 | 2008-12-24 | Timken US Corporation | Turning device position sensing system and method |
| CN100451554C (en) * | 2007-01-17 | 2009-01-14 | 北京航空航天大学 | Device for discriminating rotar position of magnet suspension flywheel |
| CN107270976A (en) * | 2017-07-25 | 2017-10-20 | 上海小寻科技有限公司 | A kind of intelligent flow meter |
| DE102019135494B4 (en) | 2019-12-20 | 2023-11-02 | Baumer Germany Gmbh & Co. Kg | Device and method for detecting movement and/or position of an object |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS576316A (en) * | 1980-06-14 | 1982-01-13 | Toyota Motor Corp | Crank angle detector for internal combustion engine |
| JPS62235522A (en) * | 1986-03-19 | 1987-10-15 | Honda Motor Co Ltd | Rotational angle sensor |
| JP2526882B2 (en) * | 1987-01-31 | 1996-08-21 | ソニー株式会社 | Face-to-face power generation type pulse generator |
| JP2532469B2 (en) * | 1987-05-28 | 1996-09-11 | 松下電器産業株式会社 | Steering shaft rotation angle detector |
| JPH07110336A (en) * | 1993-10-08 | 1995-04-25 | Stanley Electric Co Ltd | Pulse generator and rotation detector |
| EP0668486A3 (en) * | 1994-02-22 | 1997-07-30 | Heidenhain Gmbh Dr Johannes | Device for measuring lengths or angles. |
| JP2000180113A (en) * | 1998-12-14 | 2000-06-30 | Yazaki Corp | Steering wheel angle detecting device |
| JP2000329581A (en) * | 1999-05-18 | 2000-11-30 | Yazaki Corp | Magnet ring for steering angle sensor and its manufacture |
| JP3996351B2 (en) * | 2000-04-03 | 2007-10-24 | 本田技研工業株式会社 | Starter combined generator |
-
2002
- 2002-04-15 JP JP2002111742A patent/JP2003307433A/en not_active Withdrawn
-
2003
- 2003-04-11 TW TW092108459A patent/TW576894B/en not_active IP Right Cessation
- 2003-04-14 CN CNB031384471A patent/CN1268932C/en not_active Expired - Fee Related
- 2003-04-14 IT IT000291A patent/ITTO20030291A1/en unknown
- 2003-04-14 ES ES200300887A patent/ES2208132B1/en not_active Expired - Fee Related
- 2003-04-14 CN CNB2005101270526A patent/CN100387928C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102032863A (en) * | 2009-09-24 | 2011-04-27 | 株式会社捷太格特 | Rotational angle sensor, motor, rotational angle detector, and electric power steering system |
| CN102032863B (en) * | 2009-09-24 | 2014-10-01 | 株式会社捷太格特 | Rotational angle sensor, motor, rotational angle detector, and electric power steering system |
| CN108554332A (en) * | 2018-05-15 | 2018-09-21 | 中亚民生科技发展有限公司 | The true quantum haulage capacity wave of N-S vectors is implanted into equipment |
| CN108554332B (en) * | 2018-05-15 | 2024-03-08 | 中亚民生科技发展有限公司 | N-S vector true quantum traction energy wave implantation equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2003307433A (en) | 2003-10-31 |
| ES2208132A1 (en) | 2004-06-01 |
| CN1268932C (en) | 2006-08-09 |
| ES2208132B1 (en) | 2005-09-01 |
| TW576894B (en) | 2004-02-21 |
| CN100387928C (en) | 2008-05-14 |
| ITTO20030291A1 (en) | 2003-10-16 |
| CN1460861A (en) | 2003-12-10 |
| TW200305684A (en) | 2003-11-01 |
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