CN105612406B - The throttling set of position-detection sensor and internal combustion engine - Google Patents
The throttling set of position-detection sensor and internal combustion engine Download PDFInfo
- Publication number
- CN105612406B CN105612406B CN201480057282.7A CN201480057282A CN105612406B CN 105612406 B CN105612406 B CN 105612406B CN 201480057282 A CN201480057282 A CN 201480057282A CN 105612406 B CN105612406 B CN 105612406B
- Authority
- CN
- China
- Prior art keywords
- coil
- magnetic circuit
- detection
- magnet exciting
- exciting coil
- 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.)
- Active
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D11/00—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated
- F02D11/06—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated characterised by non-mechanical control linkages, e.g. fluid control linkages or by control linkages with power drive or assistance
- F02D11/10—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated characterised by non-mechanical control linkages, e.g. fluid control linkages or by control linkages with power drive or assistance of the electric type
- F02D11/106—Detection of demand or actuation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
- F02D9/08—Throttle valves specially adapted therefor; Arrangements of such valves in conduits
- F02D9/10—Throttle valves specially adapted therefor; Arrangements of such valves in conduits having pivotally-mounted flaps
- F02D9/1035—Details of the valve housing
- F02D9/105—Details of the valve housing having a throttle position sensor
-
- 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
- G01D5/20—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 by varying inductance, e.g. by a movable armature
- G01D5/204—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 by varying inductance, e.g. by a movable armature by influencing the mutual induction between two or more coils
- G01D5/2066—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 by varying inductance, e.g. by a movable armature by influencing the mutual induction between two or more coils by movement of a single coil with respect to a single other coil
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2200/00—Input parameters for engine control
- F02D2200/02—Input parameters for engine control the parameters being related to the engine
- F02D2200/04—Engine intake system parameters
- F02D2200/0404—Throttle position
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
Abstract
Detection sensor that can be cost effective is provided.A kind of position-detection sensor 1, it is characterised in that have：Magnet exciting coil 20, in the inside of winding winding 21 and surrounding formation magnetic circuit 25, and magnetic circuit 25 narrows from a side end towards end side；And detection coil 12, it is inserted into magnetic circuit 25 from any one of a side end and end side, and be supported in a manner of it can retreat in the mobile route in magnetic circuit 25, and magnetic field is formed by generate induced electromotive force V by magnet exciting coil 20.The position-detection sensor 1 of the present invention, therefore can be cost effective due to regarding magnet exciting coil 20 and detection coil 12 as main inscape.
Description
Technical field
The present invention relates to position-detection sensors, more particularly to detect the position of various parts or the sensing of rotation angle
Device.
Background technology
Using various sensors to detect rotation angle.For example, Hall sensor is converted using permanent magnet to being equipped with magnetoelectricity
The surface of the sensor chip of element applies horizontal magnetic field, to detect the absolute angle around rotary shaft of permanent magnet (for example, specially
Sharp document 1).In addition, solver (resolvers) has stator and rotor, and utilize the mutual electricity between stator and rotor
Sense because rotor is relative to the rotation position of stator change the case where, output it is corresponding relative to the rotation angle of stator with rotor
Detect signal (for example, patent document 2).Other, it is also known that MR sensors, optical encoders, angle sensors, potentiometer
(potentiometer) etc..
The purposes of detection rotation angle is related to various aspects, considers the elements such as accuracy of detection, reliability and cost to select
Sensor suitable for purposes.For example, used in for the electricity in automobile (four-wheel) and the internal combustion engine of the driving source of automatic two-wheeled cycle
Son control fuel injection device (Fuel Injection System：Fuel injection system (FI systems)) in, in detection throttle valve
In the sensor of the rotation angle of (Throttle Valve), it is mainly applicable in Hall sensor, potentiometer.
Existing technical literature
Patent document
Patent document 1：Japanese Unexamined Patent Publication 2013-2835 bulletins；
Patent document 2：Japanese Unexamined Patent Publication 2010-239693 bulletins.
Invention content
Problems to be solved by the invention
FI systems and are arranged due to that can carry out high-precision air-fuel ratio control caused by the synergistic effect with catalyst
Gas clean-up effect is combined, and is imported in advance to automobile and large-scale cart, later, to also including with the small of prime mover bicycle
Type cart also promotes being applicable in for FI systems.Moreover, because small-sized cart vehicle price compared with large and medium-sized cart is low,
Therefore even if considering the validity to environment, it is also desirable to reduce the cost of FI systems.If especially will be with prime mover bicycle conduct
Applicable object, then cost effective requirement is high.
The sensor of rotation angle about the throttle valve for being detected as FI System Forming Elements, although Hall sensor and
Potentiometer is at low cost compared with MR sensors and optical encoders, angle sensors, if but imagine small-sized cart, it is required that further
It is cost effective.
It is completed the present invention is based on such background, the purpose is to provide to realize cost effective detection sensor.
In addition, the purpose of the present invention is to provide the internal combustion engine throttling sets for having such detection sensor.
Solution to problem
Based on such purpose, position-detection sensor of the invention is characterized in that having：Magnet exciting coil is being wound
The inside of electric wire and surrounding form magnetic circuit, and magnetic circuit narrows from a side end towards end side；And detection coil, from one
Magnetic circuit, and the side can retreat in the mobile route in magnetic circuit are inserted into any one of side end and end side
Formula is supported, and magnetic field is formed by generate induced electromotive force by magnet exciting coil.
About the position-detection sensor of the present invention, since the magnetic circuit of magnet exciting coil becomes from a side end towards end side
It is narrow, if therefore electric current is supplied to magnet exciting coil, the intensity for being formed by magnetic field becomes larger from a side end towards end side.Cause
And the width of the induced electromotive force and magnetic circuit generated in the detection coil moved in the magnetic circuit, i.e. position accordingly change, institute
If to detect induced electromotive force, the position of detection coil when detection can determine.
Moreover, the position-detection sensor of the present invention is since the coil for making wound wire is as main body, therefore it can
It is greatly cost effective.
Although the position-detection sensor of the present invention is that the object for the position detection that will be additionally present of is connected to detection coil
Come what is used, but the detection object of linear reciprocating motion and both detection objects of rotary motion can be suitable for.
In the former case, magnetic circuit is formed as linear from a side end towards end side, and detected in straight line
The position for the detection coil retreated in shape mobile route.Thereby, it is possible to determine the position of the detection object of linear reciprocating motion, and
Further seek displacement distance.
In addition, in the latter case, magnetic circuit is formed as arc-shaped from a side end towards end side, and detect
The position for the detection coil retreated in arc-shaped mobile route.Thereby, it is possible to determine the position of the detection object of rotary motion, i.e.,
Rotation angle.
In addition, the present invention also provides a kind of throttling set of internal combustion engine, have：Throttle valve controls in internal combustion engine
The supply amount of mixed gas；And position sensor, detect throttle valve opening as rotation angle, which is characterized in that position
Sensor is any of the above-described kind of detection sensor.
Invention effect
According to the present invention, due to using magnet exciting coil and detection coil as main inscape, therefore provide can it is low at
The detection sensor of this change.
Description of the drawings
Fig. 1 is the figure for the composition for showing the rotational angle detecting sensor involved by first embodiment；
Fig. 2 is the figure of the action for the rotational angle detecting sensor for showing Fig. 1；
Fig. 3 is the figure of the induced electromotive force for illustrating to generate in interior loop；
Fig. 4 is the chart for showing related data related with the voltage change of rotational angle detecting sensor；
Fig. 5 is the figure for the composition for showing the rotational angle detecting sensor involved by second embodiment；
Fig. 6 is the figure of the action for the rotational angle detecting sensor for showing Fig. 5；
Fig. 7 is the figure for showing the rotational angle detecting sensor of Fig. 5 being suitable for the Measuring opening of the throttle valve of FI systems.
Specific implementation mode
[first embodiment]
Hereinafter, embodiment based on ... shown in the drawings explains the present invention in detail.
As shown in Figure 1, the position-detection sensor 1 involved by present embodiment has as inscape：Has detection
The coil 10 of coil 12, the magnet exciting coil 20 for having the magnetic circuit 25 retreated for coil 10, the induction electric obtained according to coil 10
Gesture V carrys out the detector 30 of position of the detection coil 10 inside magnet exciting coil 20.
Detection object is connected to the position-detection sensor 1, and determines detection object by position-detection sensor 1
Position P'.
Hereinafter, illustrating each element of position-detection sensor 1 successively.
[coil 10]
Coil 10 has the holder 11 being formed by resin and configures the detection coil 12 inside holder 11.
Holder 11 is connected to detection object (not shown) at rear.Therefore, holder 11 follows the straight line of detection object
Movement, retreats inside the magnetic circuit 25 of magnet exciting coil 20.
Detection coil 12 is formed by electric wire, and is formed with test section 12a in front end.
In addition, the both ends of conducting wire are connected to detector 30.
Coil 10 can from reference position shown in FIG. 1 by half-way shown in Fig. 2 (a), until Fig. 2 (b) institutes
It is moved in the range of the maximum shift position shown.
If in the state that electric current is applied to magnet exciting coil 20, coil 10 is retreated inside magnetic circuit 25, then due to electromagnetism sense
It answers and flows induced current in test section 12a, generate induced electromotive force V.Generated induction electric is detected using detector 30
Gesture V.
[magnet exciting coil 20]
Magnet exciting coil 20 have winding 21 made of wound wire and from inside keep winding 21 spool 23, with
The Inner Constitution magnetic circuit 25 of spool 23.
The cross section of magnet exciting coil 20 accordingly forms spool 23 to form straight line at circle, by the shape with coil 10
Magnetic circuit 25.
Spool 23 by internal diameter hold forward it is gradually smaller in a manner of formed.Therefore, magnetic circuit 25 is formed by with width towards front end
The mode to narrow is formed.
The both ends of winding 21 are connected to power supply 27, are applied alternating current from power supply 27.
Here, illustrate in the position (hereinafter, position P1) of Fig. 2 (a) and the position (hereinafter, position P2) of Fig. 2 (b),
Induced electromotive force V1, V2 of detection coil 12 are resulted from respectively.
If applying alternating current from power supply 27, as shown in figure 3, generating magnetic flux φ inside the magnetic circuit 25 of magnet exciting coil 20
(magnetic field).Moreover, because magnetic circuit 25 is formed in a manner of narrowing towards front end, therefore magnetic flux density is got higher towards front end.
Then, the test section 12a at the P2 of position runs through more magnetic flux φ compared with the P2 of position.In addition, due to handing over
Galvanic electricity stream is applied to magnet exciting coil 20, therefore about the variation per unit time for the magnetic flux for running through test section 12a per unit time,
Compared with the P1 of position the case where, test section 12a at the P2 of position also bigger.
In addition, induced electromotive force V is proportional to through the variation per unit time of magnetic flux φ of test section 12a.
Thus, become the induction than being generated at the P1 of position in the induced electromotive force V2 that the test section 12a of position P2 is generated
Electromotive force V1 is big (V2 ＞ V1).
That is, as test section 12a is towards the front end entrance of magnet exciting coil 20, generated induced electromotive force V becomes larger.
[detector 30]
Detector 30 is continuously detected the induced electromotive force V of detection coil 12, and the sense for detecting and being detected
Answer position P of the corresponding coils 10 of electromotive force V in magnet exciting coil 20.Then, inspection pair is determined based on the position P of coil 10
The position of elephant.
Position-detection sensor 1 can determine the position P' of detection object using 2 kinds of determining methods.Detect the position of object
Setting P' can be determined using any method, also can and be determined with two methods.
The first is the phase based on the variation about the induced electromotive force V opposite with position P of the coil 10 in magnetic circuit 25
Data are closed to determine the position of coil 10, in the method for the position P' of determining detection object.
Detector 30 keeps the related data of the variation about the induced electromotive force V opposite with the position P of coil 10.It can
Using position-detection sensor 1, dependency number is obtained by measuring induced electromotive force V corresponding with the commitment positions P of coil 10
According to.Although showing an example of related data with line chart in Fig. 4 (a), detector 30 can be as the data of form
It keeps, furthermore it is also possible to kept as function.In addition, in the related data of Fig. 4 (a), although position P and induced electricity
Kinetic potential V is in proportionate relationship, but this only an example after all.
If detector 30 detects induced electromotive force V, position-detection sensor 1 determines the position of coil 10 according to related data
Set P.
Moreover, detector 30 keeps position Ps of the position P' with detection object relative to coil 10 in magnet exciting coil 20
The related related data of correlation.Based on the related data, detection object is determined according to the position P of identified coil 10
Position P'.
Second is the dependency number based on the variation about the voltage ratio R opposite with position P of the coil 10 in magnetic circuit 25
According to the position of coil 10 is determined, the method to determine the position P' of detection object.
Here, voltage ratio R refers to voltage the ratio between of the voltage of coil 10 relative to magnet exciting coil 20.
Apply certain voltage to magnet exciting coil 20 using power supply 27.Therefore, the voltage ratio R of the given location of coil 10
Do not change.
The voltage for being applied to magnet exciting coil 20 is transferred to detector 30 by power supply 27.In addition, detector 30 is to detection coil
12 induced electromotive force V is detected.Then, detector 30 detects the voltage and coil 10 for being applied to magnet exciting coil 20
Induced electromotive force V both sides, and calculate voltage ratio R.
In addition, detector 30 keeps the related data about the voltage ratio R opposite with the position P of coil 10, (Fig. 4 (a) is empty
Line) and position P' about opposite with the position P of coil 10 detection object related data.Although in addition, in the correlation
In data, position P and voltage ratio R are in proportionate relationship, but this only an example after all.
Detector 30 determines the position P of coil 10 based on related data according to the voltage calculated.Moreover, according to institute
The position P of determining coil 10 determines the position P' of detection object based on related data.
By determining the position P of coil 10 based on voltage ratio R, even if the application voltage of such as power supply 27 becomes because of thunderbolt
Change, or generate the variation for the voltage for being applied to magnet exciting coil 20 because of the magnetic force environment of surrounding, also can determine detection object
Position P'.
Although the position-detection sensor 1 so far illustrated is using the detection object of linear motion as object, in detection pair
In the case of as rotation, it can be used as detecting the rotational angle detecting sensor of its rotation angle θ to use.
In this case, make movement conversion mechanism between holder 11 and detection object.Movement conversion mechanism is will
Rotary motion is converted to the mechanism of linear motion, such as can use rack-and-pinion (rack and pinion) mechanism.
If detecting object rotary motion, holder 11 is moved along a straight line by movement conversion mechanism.Therefore, coil 10 exists
It retreats the inside of magnetic circuit 25.If coil 10 is retreated in magnetic circuit 25, induced electromotive force V is generated in detection coil 12, and utilize
Detector 30 detects induced electromotive force V.
In this case, detector 30 is kept from the dependency number about the induced electromotive force V opposite with the position P of coil 10
According to what is obtained with the related data about the rotation angle θ opposite with the position P of coil 10, about opposite with rotation angle θ
The related data of the variation of induced electromotive force V.Detector 30 can determine rotation angle θ according to the position P of coil 10.
In addition, rotational angle detecting sensor 2 can also detect rotation angle θ using voltage ratio R.In this case,
Detector 30 keeps the data about the rotation angle θ opposite with voltage ratio R, and determines rotation according to the voltage of calculating ratio R
Angle, θ.
No matter the specific composition of present embodiment detector 30, the well known electricity of induced electromotive force V can will be detected
Road, equipment are suitable for detector 30.But since the purpose of the present invention is position P' or the rotation with low cost to detection object
Angle, θ is detected, therefore it is expected that detector 30 is made to be the composition according to the purpose.But since related data can be kept, and
And rotation angle θ signal processings easy so corresponding with the induced electromotive force V detected are determined, therefore can
Detector 30 is constituted using the microcomputer of cheap single-chip.
[second embodiment]
In the present embodiment, the rotational angle detecting sensor 2 retreated with illustrating 50 arc-shaped of coil.
As shown in figure 5, the rotational angle detecting sensor 2 involved by present embodiment has as inscape：Have
Be formed as the coil 50 of falculate holder 51, the magnet exciting coil 60 for having the arc-shaped magnetic circuit 65 retreated for holder 51,
And the detector 30 of rotation angle θ is sought according to the induced electromotive force V obtained from coil 50.
Hereinafter, illustrating each integral part of rotational angle detecting sensor 2 successively.In addition, pair same with first embodiment
The composition of sample is accompanied by identical symbol, and omits the description.
In addition, rotational angle detecting sensor 2 can determine the position P' of detection object using 2 kinds of determining methods.Inspection
The position P' for surveying object can be determined using any method, also can and be determined with two methods.
[coil 50]
Coil 50 be can rotate forward and invert centered on rotary shaft 55, i.e. what the mode of pendulum motion was supported
Component has the holder 51 supported by rotary shaft 55 and the detection coil being arranged inside holder 51 52.50 energy of coil
It is enough centered on rotary shaft 55, in the half-way from reference position shown in fig. 5 (rotation angle=0 degree) by Fig. 6 (a),
It is swung in the range of maximum displacement position (rotation angle=90 degree) shown in Fig. 6 (b).
[holder 51]
Holder 51 is formed by resin, and be plan view shape is falculate component.Holder 51 includes the insertion of arc-shaped
Portion 53 and linear swing part 54.It retreats in the inside of the magnetic circuit 65 of magnet exciting coil 60 insertion section 53.In addition, in insertion section 53
Inside, be equipped with detection coil 52.
Shape of the detection coil 52 along insertion section 53 is formed, and test section 52a is formed in front end.The conducting wire of detection coil 52
Both ends be connected to detector 30.
Detection coil 52 generates induced electromotive force V by retreating in the inside for generating the magnetic circuit 65 of magnetic flux φ.Pass through profit
With detector 30 come the variation of the conversion process induced electromotive force, come the corresponding coil of the induced electromotive force V that determines with detected
50 rotation angle θ.
The outer peripheral edge 51a and inner peripheral 51b of holder 51 need not be the arc-shaped with single curvature, for example, also
Straight line or curve can be connected each in outer peripheral edge 51a and inner peripheral 51b to be formed.If in short, can not with
The form that magnet exciting coil 60 is retreated in the case of interfering, then can make the magnetic circuit 65 of arc-shaped work in the present embodiment.
The central angle alpha of holder 51 is 90 degree.The central angle alpha is the detection object with rotational angle detecting sensor 2
Rotation angle is what 90 degree or less of situation was accordingly set.Thus, detecting the case where rotation angle of object is more than 90 degree
Under, the central angle alpha of holder 51 is set as angle corresponding with the rotation angle.
About swing part 54, the rotation that rotary shaft 55 is followed in one end is supported in a manner of it can rotate by axis, and another
One end is supported by insertion section 53 and its rear end 51d, is worked as mechanicalness structural member.To, as long as having the function of this,
No matter then shape and material.The holder 51 of 54 one of the insertion section 53 and swing part can for example be made by injection moulding
Make.
It is of course also possible to make the part of swing part 54 seperatedly with insertion section 53, and by engaged with insertion section 53 come
Make holder 51.
About the coil 50 of present embodiment, due to supporting the rear end 51d of insertion section 53 using swing part 54, therefore from for
The substantially entire scope of the rear end 51d to front end 51c of support section can be retreated in magnetic circuit 65.Thus, according to this embodiment party
Formula due to that can eliminate the region that do not retreat in magnetic circuit 65 of insertion section 53, therefore contributes to rotational angle detecting sensor 2
Miniaturization principal element.
Rotary shaft 55 and the action of the rotary shaft (hereinafter, primary shaft) for the various elements being driven in rotation synchronously are revolved
Turn.Primary shaft can be extended so that it works as rotary shaft 55, additionally it is possible to directly or indirectly connect rotary shaft 55
In primary shaft.As the example being indirectly connected with, it is contemplated that the case where making speed reducer or booster engine intervene.
[magnet exciting coil 60]
Magnet exciting coil 60 has winding 61 made of wound wire and keeps the spool 63 of winding 61 from inside, online
The Inner Constitution magnetic circuit 65 of axis 63.Magnet exciting coil 60 by the shape of the holder 51 with coil 50 accordingly formed spool 63 come
Magnetic circuit 65 is formed as into arc-shaped.
Here, arc-shaped is intended to also include that even if the front end as magnetic circuit 65 is more and more thinner, but its center line is at arc-shaped
Shape.
In addition, about magnet exciting coil 60, cross section is formed at circle in such a way that internal diameter is held become smaller forward.Therefore, magnetic circuit
65 are formed in a manner of narrowing towards front end.
In this example embodiment, although the central angle β of magnet exciting coil 60 is 90 degree consistent with the central angle alpha of holder 51,
It is accordingly to be set with the central angle alpha of holder 51.
Here, illustrate in the position (hereinafter, position P3) of Fig. 6 (a) and the position (hereinafter, position P4) of Fig. 6 (b),
Induced electromotive force V3, V4 of detection coil 52 are resulted from respectively.
About magnet exciting coil 60, magnetic circuit 65 narrows towards front end.Therefore, the test section 52a at the P4 of position, with position P3 phases
Than running through more magnetic flux φ.Therefore, since reference position, it is located at the front end of magnet exciting coil 60, then magnetic flux density becomes
It obtains higher.Thus, become the induced electricity than being generated at the P3 of position in the induced electromotive force V4 that the test section 52a of position P4 is generated
Kinetic potential V3 is big (V4 ＞ V3).
That is, as test section 52a is towards the front end entrance of magnet exciting coil 60, generated induced electromotive force V becomes larger.
Detector 30 involved by present embodiment keeps to calculate rotation angle θ about the rotation angle with coil 50
Spend the related data of the variation of the opposite induced electromotive force V of θ.Rotational angle detecting sensor 2 can be used, coil 50 is often made
Rotate first retainer, for example, 0 degree, 1 degree, 2 degree ... so respectively once when, corresponding with each rotation angle θ induced electricity of measurement
Kinetic potential V obtains related data (Fig. 4 (b)).
Rotational angle detecting sensor 2 is in the detection object suitable for rotation angle θ, if detector 30 detects induced electricity
Kinetic potential V, then with reference to related data to determine rotation angle θ corresponding with the induced electromotive force V detected.Identified rotation angle
Degree θ is used to detect the control process of object.
Rotational angle detecting sensor 2 is in the detection object suitable for rotation angle θ, additionally it is possible to be based on existing with coil 50
The variation of the opposite voltage ratio R of rotation angle θ in magnetic circuit 65 determines rotation angle θ.
In this case, detector 30 keeps the related data about the rotation angle θ opposite with voltage ratio R.Therefore, it examines
Rotation angle θ can be determined based on voltage ratio R by surveying device 30.By the rotation angle for determining detection object based on voltage ratio R
θ, even if can determine the rotation angle θ of detection object if the voltage for being applied to magnet exciting coil 20 changes.
[purposes example]
The one kind of the use of rotational angle detecting sensor 2 as present embodiment on the way, can be used in being detected as FI systems
The rotation angle of the throttle valve of the inscape of system.
Pair position same as the composition illustrated in the first embodiment omits the description.
The summary of composition is shown in FIG. 7.Rotational angle detecting sensor 2 is used to detect the aperture of valve body 43.
About rotational angle detecting sensor 2, the rotary shaft 55 of coil 50 is connected to valve shaft 41, if valve shaft 41 is by electronic cause
Dynamic device 45 drives, then rotary shaft 55 is followed valve shaft 41 and rotated.With the rotation of rotary shaft 55, holder 51 in magnetic circuit 65 into
It moves back, the induced electromotive force V of magnet exciting coil 60 changes, thus ECU 35 can detect rotation based on the induced electromotive force V detected
The rotation angle θ of shaft 55, the i.e. aperture of valve body 43.ECU 35 with reference to the valve body 43 detected aperture, and to electric actuation
Device 45 sends control signal.
Embodiments of the present invention are this concludes the description of, it, then can be in above-mentioned reality but as long as not departing from the purport of the present invention
It applies the composition enumerated in mode and carries out choice selection, or be suitably changed to other compositions.
Although for example, in the present embodiment, the magnet exciting coil 20,60 to be become smaller towards front end using diameter, in the present invention
The internal diameter of coil is gradually changed towards front end, thus can also be applicable in the coil that internal diameter becomes larger towards front end.
In addition, in the present embodiment, although about magnet exciting coil 20,60, the shape explanation of cross section is circle, with
The mode that magnetic circuit 25,65 becomes narrow gradually is formed, thus can also section be formed as rectangular-shaped.
In addition, though illustrating to determine the position of detection object by detecting induced electromotive force V in the present embodiment
The method of P' or rotation angle θ, but the inductance that detection is generated because holder 11,51 is retreated in magnetic circuit 25,65 also can be true
Regular inspection surveys the position P' or rotation angle θ of object.
In addition, though second embodiment illustrates that detected rotation angle range is 0~90 degree of example, but this hair
The bright rotation angle that can also be detected more than 90 degree.But due to needing to avoid the interference of swing part 54 and magnet exciting coil 60, therefore
Maximum rotation angle that can be detected ranging from 0~180 degree.
It retreats in being formed in the internal magnetic circuit 25 of winding 21 (spool 23) in addition, though present embodiment is coil 50
It constitutes, but the magnetic flux for constituting magnetic circuit also results from around winding 21, therefore the present invention can also be formed in detection line for holder
The composition retreated in magnetic circuit around enclosing.
Moreover, the purposes that is applicable in of rotational angle detecting sensor according to the present invention is not limited to the throttle valves of FI systems and opens
Degree detection.
Symbol description
1 position-detection sensor
2 rotational angle detecting sensors
10,50 coil
11,51 holder
12,52 detection coil
12a, 52a test section
20,60 magnet exciting coil
21,61 winding
23,63 spool
25,65 magnetic circuit
27 power supplys
30 detectors
40 throttle valves
41 valve shafts
43 valve bodies
45 electric actuators
The outer peripheral edges 51a
51b inner peripherals
The front ends 51c
The rear ends 51d
53 insertion sections
54 swing parts
55 rotary shafts
φ magnetic fluxs
V induced electromotive forces
α, β central angle
θ rotation angles
Claims (4)
1. a kind of position-detection sensor, which is characterized in that have：
Magnet exciting coil, the inside of wound wire and around form magnetic circuit, and the magnetic circuit is from a side end towards the other side
End narrows；
Detection coil, from any one of a side end and the end side insertion magnetic circuit, and with
The mode that can be retreated in the mobile route in the magnetic circuit is supported, by the magnet exciting coil be formed by magnetic field with
Generate induced electromotive force；And
Position of the detection coil inside the magnet exciting coil is detected according to the induced electromotive force of detection coil acquirement
The detector set.
2. position-detection sensor according to claim 1,
The magnetic circuit is formed as linear from a side end towards the end side,
Detect the position for the detection coil retreated in the linear mobile route.
3. position-detection sensor according to claim 1,
The magnetic circuit is formed as arc-shaped from a side end towards the end side,
Detect the position for the detection coil retreated in the mobile route of arc-shaped.
4. a kind of throttling set of internal combustion engine, has：
Throttle valve controls the supply amount of mixed gas in internal combustion engine；And
Position sensor detects the aperture of the throttle valve as rotation angle,
It is characterized in that,
The position sensor is the detection sensor recorded in any one of claims 1 to 3.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013-217610 | 2013-10-18 | ||
| JP2013217610A JP2015080379A (en) | 2013-10-18 | 2013-10-18 | Position detection sensor, and throttle device of internal combustion engine |
| PCT/JP2014/077381 WO2015056689A1 (en) | 2013-10-18 | 2014-10-15 | Position detection sensor, and throttle device for internal combustion engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105612406A CN105612406A (en) | 2016-05-25 |
| CN105612406B true CN105612406B (en) | 2018-08-21 |
Family
ID=52828132
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201480057282.7A Active CN105612406B (en) | 2013-10-18 | 2014-10-15 | The throttling set of position-detection sensor and internal combustion engine |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP2015080379A (en) |
| CN (1) | CN105612406B (en) |
| WO (1) | WO2015056689A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105241416B (en) * | 2015-11-19 | 2017-11-28 | 湖南天雁机械有限责任公司 | Turbine box deflation valve openness measuring device |
| US10389195B2 (en) * | 2017-07-13 | 2019-08-20 | Rosemount Aerospace Inc. | Annular magnets for rotor position estimation |
| US10551213B2 (en) * | 2017-12-15 | 2020-02-04 | Infineon Technologies Ag | Sickle-shaped magnet arrangement for angle detection |
| CN115235333B (en) * | 2022-09-22 | 2022-12-02 | 徐州方达电机有限公司 | Main shaft dynamic eccentricity testing device based on induced current |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2115929B (en) * | 1982-02-17 | 1985-11-27 | Standard Telephones Cables Ltd | Inductive position transducer |
| GB2202331B (en) * | 1987-03-19 | 1991-01-02 | British Gas Plc | Electromagnetic transducer |
| JPH02112722A (en) * | 1988-10-21 | 1990-04-25 | Zenichiro Kojima | Length measuring device |
| JPH0612492Y2 (en) * | 1990-04-20 | 1994-03-30 | 大倉電気株式会社 | Displacement converter |
| WO1996032579A1 (en) * | 1995-04-10 | 1996-10-17 | Siemens Aktiengesellschaft | Process for finding the mass of air entering the cylinders of an internal combustion engine with the aid of a model |
| KR100446076B1 (en) * | 1995-11-30 | 2004-11-03 | 산요덴키가부시키가이샤 | Internal combustion engine unit and air conditioner using the same |
| JP2004012308A (en) * | 2002-06-07 | 2004-01-15 | Smc Corp | Position measuring device utilizing coil, float type flowmeter, and method of measuring position |
| JP5270277B2 (en) * | 2008-09-16 | 2013-08-21 | 愛三工業株式会社 | Position sensor |
-
2013
- 2013-10-18 JP JP2013217610A patent/JP2015080379A/en active Pending
-
2014
- 2014-10-15 CN CN201480057282.7A patent/CN105612406B/en active Active
- 2014-10-15 WO PCT/JP2014/077381 patent/WO2015056689A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| WO2015056689A1 (en) | 2015-04-23 |
| JP2015080379A (en) | 2015-04-23 |
| CN105612406A (en) | 2016-05-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105612406B (en) | The throttling set of position-detection sensor and internal combustion engine | |
| CN104969036B (en) | Sensor device for at least one revolving property for determining rotating element | |
| EP3250895B1 (en) | Force measurement device | |
| CN102686980B (en) | For detecting the magnetic field sensor device of motor element displacement | |
| CN103256883B (en) | Also the angular sensor of absolute rotation angle can be determined when multiple rotary | |
| CN110114637B (en) | Sensor device | |
| US10338158B2 (en) | Bias magnetic field sensor | |
| US9410788B2 (en) | Magnetic length measuring system, length measuring method and method for producing a magnetic length measuring system | |
| CN105765347A (en) | High resolution multi-turn sensor related devices and methods | |
| US10852367B2 (en) | Magnetic-field sensor with a back-bias magnet | |
| US20130127450A1 (en) | Method and device for detecting the coupling of parts to a machine | |
| JP2008538138A (en) | Method and apparatus for detecting the rotation angle of a rotatable element in a non-contact manner | |
| CN104884904A (en) | Detected position correction method for electromagnetic inductance-type position detector | |
| CN112114278A (en) | Magnetic field sensor arrangement, magnetic torque sensor arrangement and method for determining stray field immunity of magnetic flux | |
| CN105974339A (en) | Magnetic sensor | |
| Wang et al. | An angle displacement sensor using a simple gear | |
| CN103842786B (en) | Sensor device | |
| CN105698671A (en) | Novel angular displacement sensor | |
| CN107923732A (en) | Proximity sensor | |
| US7024946B2 (en) | Assembly for measuring movement of and a torque applied to a shaft | |
| CN106461418A (en) | Magnetic position detection device | |
| CN107810389A (en) | Drive device and method with detection device | |
| JP2004198425A (en) | Device for detecting rotational angle of rotatable element | |
| Slanovc et al. | Designing Airgap-Stable Magnetic Linear Position Systems | |
| CN101416037A (en) | Rotation angle detector |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |