CN106597328A - Motor magnetic ring polarity detection circuit and system - Google Patents
Motor magnetic ring polarity detection circuit and system Download PDFInfo
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- CN106597328A CN106597328A CN201610948804.3A CN201610948804A CN106597328A CN 106597328 A CN106597328 A CN 106597328A CN 201610948804 A CN201610948804 A CN 201610948804A CN 106597328 A CN106597328 A CN 106597328A
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- 230000005611 electricity Effects 0.000 claims description 8
- 230000000052 comparative effect Effects 0.000 claims description 6
- 230000001105 regulatory effect Effects 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 230000009897 systematic effect Effects 0.000 description 5
- 230000002093 peripheral effect Effects 0.000 description 3
- 241000208340 Araliaceae Species 0.000 description 2
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 2
- 235000003140 Panax quinquefolius Nutrition 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 2
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- 235000008434 ginseng Nutrition 0.000 description 2
- 230000010349 pulsation Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/12—Measuring magnetic properties of articles or specimens of solids or fluids
Abstract
The invention discloses a motor magnetic ring polarity detection circuit and a motor magnetic ring polarity detection system, which relate to the field of automotive electronics. The motor magnetic ring polarity detection circuit comprises a Hall acquisition module, a voltage division module, a reference voltage module and a first comparator, wherein the Hall acquisition module is used for acquiring electrical information of a vehicle-mounted power supply; the voltage division module is connected to a polarity acquisition point of the Hall acquisition module, and is used for carrying out voltage division on potential of the polarity acquisition point to obtain a polarity voltage after voltage division; the reference voltage module is connected to the vehicle-mounted power supply, and is used for generating a reference voltage according to a voltage of the vehicle-mounted power supply; and an input end of the first comparator is connected to the voltage division module and the reference voltage module, and compares the polarity voltage with the reference voltage to obtain a comparison result used for representing polarity of the motor magnetic ring. Compared with the method adopting a fixed reference voltage in the prior art, the motor magnetic ring polarity detection circuit and the motor magnetic ring polarity detection system can reduce system errors caused by voltage fluctuations of the vehicle-mounted power supply, thereby achieving the effect of detecting the polarity of the motor magnetic ring more precisely.
Description
Technical field
The present invention relates to vehicle electric field, and in particular to a kind of motor magnet ring polarity detection circuit and system.
Background technology
What at present vehicle dormer window, vehicle window were adopted is all motor control, for vehicle window or skylight movement velocity and direction according to
It is acquired by Hall chip, so hall signal acquisition scheme is most important；What is adopted on current market is substantially Hall
The scheme of sensor, Hall element includes current mode and voltage-type.Current mode Hall is more stable than voltage-type Hall, reliability
Height, current mode Hall commercially also occupies very big ratio at present, so the design safety reliability of current mode Hall is to pass
It is important.
The design of current current mode hall signal collection is generally adopted by the series resistance on current sensor and is connected to
To reach the purpose of partial pressure on power supply, while designing a voltage reference source, (reference voltage is in current mode Hall high/low currents feelings
The mid portion of the magnitude of voltage that partial pressure is obtained under condition), the two signals are given to the in-phase input end of comparator and anti-phase defeated simultaneously
Enter end and show that a comparative result is (logically high：1, or logic low：0), because motor is rotated, magnet ring N, S poles on motor are handed over
For conversion, so the electric current on current mode Hall is also alternately change, and then the voltage of the input of comparator is input to
It is two different magnitudes of voltage of height, and is exactly a series of square-wave signals outputs after the reference voltage of our settings is compared
(level saltus step changes according to N, S pole of motor upper magnetic ring and changes), carries out square wave and adopts finally by the input capture port of CPU
Collection, and then calculate the rotating speed of motor.
Problem present in prior art：If the 12V power supplys being 1. input into using system are used as pull-up power supply, due to
The 12V power supplys of car load are unstable values (changing between 9V～16V), so the setting of reference source is extremely difficult, reliability is very
Difference.2. another mode be so can result reference source as pull-up source using fixed power supply (output of LDO) output
The difficult problem of setting, but the premise of this scheme is to need extra increase LDO, needs to increase significant cost.
Therefore, how to realize detecting that motor magnet ring polarity becomes technical problem urgently to be resolved hurrily exactly.
The content of the invention
In view of this, a kind of motor magnet ring polarity detection circuit and system are embodiments provided, how to solve
Realize detecting the problem of motor magnet ring polarity exactly.
According in a first aspect, embodiments provide a kind of motor magnet ring polarity detection circuit, including：
Hall acquisition module, for gathering the power information of vehicle power；Division module, is connected to the pole of Hall acquisition module
Property collection point, for carrying out partial pressure to the current potential of polarity collection point the polar voltages after partial pressure are obtained；Reference voltage module, connection
To vehicle power, for generating reference voltage according to the voltage of vehicle power；First comparator, its input is respectively connecting to point
Polar voltages and reference voltage are compared the ratio obtained for characterizing motor magnet ring polarity by die block and reference voltage module
Relatively result.
Alternatively, Hall acquisition module includes：For the first pull-up resistor for being connected serially between vehicle power and ground and suddenly
The series connection node of that device, the first pull-up resistor and Hall device is polarity collection point.
Alternatively, reference voltage module includes：For the second pull-up resistor and the confession that are connected serially between vehicle power and ground
Electric unit；Second pull-up resistor and the first pull-up resistor have identical resistance；Power supply unit is used to provide dc source；Second
The connecting node output reference voltage of pull-up resistor and power supply unit.
Alternatively, power supply unit includes：The transistor and reference resistance being sequentially connected in series between the second pull-up resistor and ground；
Second comparator, its first input end is used to be connected to dc source, and its second input is connected to transistor and reference resistance
Between, its output end is connected to the control end of transistor.
Alternatively, power supply unit also includes：Regulating resistor, first for being connected to dc source and the second comparator is defeated
Enter between end, for the current potential that adjustment is input into the first input end of the second comparator.
Alternatively, division module includes：The first resistor and second resistance being connected serially between polarity collection point and ground, first
The voltage of the connecting node output of resistance and second resistance is polar voltages.
Alternatively, also include between the second pull-up resistor and first comparator：3rd resistor and the 4th resistance；3rd resistor
And the 4th resistance be sequentially connected in series between the second pull-up resistor and ground, the connecting node of 3rd resistor and the 4th resistance is connected to
The input of one comparator.
Alternatively, first resistor and 3rd resistor have identical resistance；Second resistance and the 4th resistance have identical
Resistance.
According in a first aspect, embodiments provide a kind of motor magnet ring polarity detection system, including：
The motor magnet ring polarity detection circuit that above-described embodiment is provided；Controller, is connected to the output end of first comparator,
Judge to obtain the polarity of motor magnet ring for receiving comparative result.
Technical solution of the present invention, has the advantage that：
Motor magnet ring polarity detection circuit provided in an embodiment of the present invention and system, because reference voltage module is connected to car
Power supply is carried, according to the voltage of vehicle power reference voltage is generated, the reference voltage is compared as the benchmark of polar voltages
Compared with, so that reference voltage can follow the fluctuation of vehicle carried power voltage and change, then so that as the ginseng of benchmark
Examining voltage can be adaptively adjusted.Relative to the mode of reference voltage fixed in prior art, can reduce because of vehicle mounted electric
Source voltage pulsation and the systematic error that causes, it is achieved thereby that more precisely detecting motor magnet ring polarity.
Used as optional technical scheme, the second pull-up resistor and the first pull-up resistor have identical resistance, so as to so that
Second pull-up resistor of reference voltage module is carrying out being depressured the reference voltage and the first pull-up electricity that obtain to vehicle carried power voltage
Resistance is carrying out being depressured the voltage for obtaining polarity collection point quite to vehicle carried power voltage, so that reference voltage being capable of self adaptation
Ground adjustment, so that reference voltage is suitable with the voltage of polarity collection point.
Used as optional technical scheme, first resistor and 3rd resistor have an identical resistance, second resistance and the 4th electric
Resistance has identical resistance, so that being separately input into the polarity collection point voltage and reference voltage tool at first comparator two ends
There is suitable peripheral circuit environment, systematic error can be more effectively reduced then, improve reference voltage and follow vehicle power
The adaptivity of voltage change.
Description of the drawings
The features and advantages of the present invention can be more clearly understood from by reference to accompanying drawing, accompanying drawing is schematic and should not manage
Solution is to carry out any restriction to the present invention, in the accompanying drawings：
Fig. 1 is a kind of motor magnet ring polarity detection circuit principle schematic in the embodiment of the present invention；
Fig. 2 is a kind of motor magnet ring polarity detection system principle schematic in the embodiment of the present invention；
Fig. 3 is a kind of motor magnet ring polarity detection circuit signal flow diagram in the embodiment of the present invention.
Specific embodiment
To make purpose, technical scheme and the advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
The a part of embodiment of the present invention, rather than the embodiment of whole.Based on the embodiment in the present invention, those skilled in the art are not having
Have and make the every other embodiment obtained under the premise of creative work, belong to the scope of protection of the invention.
As long as additionally, technical characteristic involved in invention described below different embodiments non-structure each other
Just can be combined with each other into conflict.
In order to realize detecting motor magnet ring polarity exactly, present embodiment discloses a kind of motor magnet ring Check up polarity is electric
Road, refer to Fig. 1, be the detection circuit structure schematic diagram, and the motor magnet ring polarity detection circuit includes：Hall acquisition module 1,
Division module 2, reference voltage module 3 and first comparator 4, wherein：
Hall acquisition module 1 is used to gather the power information of vehicle power.In a particular embodiment, Hall acquisition module 1 can
To be realized using currently existing scheme, for example, Hall acquisition module 1 can include：For being connected serially to vehicle power VBatWith ground it
Between the first pull-up resistor R1 and Hall device, the first pull-up resistor R1 and Hall device series connection node be polarity collection point Q, lead to
Often, the current potential that can gather polarity collection point Q obtains polar voltages, then, by the polar voltages and reference voltage or base
Quasi- voltage is compared detection and obtains motor magnet ring polarity (S poles or N poles).
Division module 2 is connected to the polarity collection point Q of Hall acquisition module 1, for carrying out to the current potential of polarity collection point Q
Partial pressure obtains polar voltages V after partial pressureQ.The operating voltage of vehicle power is 12V or so (changing between 9V～16V), and is led to
Often the operating voltage of chip and electronic devices and components (such as single-chip microcomputer) is 5V, therefore, it is to reduce vehicle power because of overtension
The damage caused to chip, can carry out partial pressure and obtain the polarity after partial pressure by 2 pairs of polar voltages for collecting of division module
Voltage VQ。
Reference voltage module 3 is used to be connected to vehicle power, for generating reference voltage according to the voltage of vehicle power
Vref.In the present embodiment, by vehicle power VBatTo generate reference voltage VrefSuch that it is able to so that in vehicle carried power voltage ripple
When dynamic, the reference voltage V of generationrefAlso the fluctuation of vehicle carried power voltage can be followed and is adaptively adjusted.
First comparator 4 its input is respectively connecting to division module 2 and reference voltage module 3, to polar voltages VQWith
Reference voltage VrefIt is compared the comparative result obtained for characterizing motor magnet ring polarity.In the present embodiment, compare by first
Device 4 is to polar voltages VQWith reference voltage VrefIt is compared, after the comparison, the output high level of first comparator 4 or low electricity
Flat, the high level and low level characterize the polarity (N poles or S poles) of motor magnet ring.In a particular embodiment, first comparator 4
Normal phase input end can be input into polar voltages VQ, inverting input input reference voltage Vref；Can also first comparator 4
Normal phase input end input reference voltage Vref, inverting input input polar voltages VQ.It should be noted that in normal phase input end
When replacing with the input voltage of inverting input, the motor magnet ring that the high level and low level that first comparator 4 is exported is characterized
Polarity also can replace, specifically, hereafter will be described in an illustrative manner.
In a particular embodiment, reference voltage module 3 includes：For being connected serially to vehicle power VBatAnd ground between second
Pull-up resistor R2 and power supply unit 31.Wherein, the second pull-up resistor R2 and the first pull-up resistor R1 have identical resistance, so as to
So that vehicle power VBatBy the pressure drop of the second pull-up resistor R2 and vehicle power VBatBy the pressure drop of the first pull-up resistor R1
It is identical.Power supply unit 31 is used to provide the connecting node O output reference of dc source, the second pull-up resistor R2 and power supply unit 31
Voltage.It should be noted that in the present embodiment, there is the second pull-up resistor R2 and the first pull-up resistor R1 identical resistance to be can
To allow certain error to exist, the error can determine according to specific required precision.
In a particular embodiment, power supply unit 31 includes：The crystal being sequentially connected in series between the second pull-up resistor R2 and ground
Pipe T1 and reference resistance Rref；Second comparator 32, its first input end is used to be connected to dc source VCC, its second input
It is connected to transistor T1 and reference resistance RrefBetween, its output end is connected to the control end of transistor T1.It should be noted that
In an alternate embodiment of the invention, technical staff can also suitably increase as needed some current limiting devices, such as in the second comparator
Current-limiting resistance can be increased between 32 output end and the control end of transistor T1, to limit the electricity for flowing through transistor T1 control ends
Stream.
In order to realize adjusting the size of the voltage that power supply unit 31 is provided, in an alternate embodiment of the invention, power supply unit 31 is also
Including regulating resistor, for being connected between dc source and the first input end of the second comparator 32, for adjusting to second
The current potential of the first input end input of comparator 32.Specifically, regulating resistor can using two different resistances (certainly, according to
Needs can also be identical resistance) mode of series connection to be realizing partial pressure.
In a particular embodiment, division module 2 includes：Be connected serially to first resistor R21 between polarity collection point Q and ground and
The voltage of the connecting node output of second resistance R22, first resistor R21 and second resistance R22 is polar voltages VQ。
In order to realize that the voltage provided power supply unit 31 carries out partial pressure, in a particular embodiment, the second pull-up resistor R2
Also include and first comparator 4 between：3rd resistor R31 and the 4th resistance R32, wherein, 3rd resistor R31 and the 4th resistance
R32 is sequentially connected in series between the second pull-up resistor R2 and ground, and the connecting node of 3rd resistor R31 and the 4th resistance R32 is connected to
The input of first comparator 4.
In order that the input voltage of 4 two inputs of first comparator has suitable peripheral circuit, optional real
In applying example, first resistor R21 and 3rd resistor R31 have identical resistance, and second resistance R22 and the 4th resistance R32 have phase
Same resistance.It should be noted that in the present embodiment, it is alleged with identical resistance, it is not definitely equal, it should be understood that to permit
Perhaps certain error is present, and specific error size can determine according to required precision.
The present embodiment also discloses a kind of motor magnet ring polarity detection system, refer to Fig. 2, is that the detecting system structure is former
Reason figure, the motor magnet ring polarity detection system includes motor magnet ring polarity detection circuit and controller disclosed in above-described embodiment,
Wherein, controller is connected to the output end of first comparator 4, judges to obtain the polarity of motor magnet ring for receiving comparative result.
It should be noted that in a particular embodiment, technical staff can also in systems increase as needed corresponding components and parts (example
Such as resistance), to carry out overvoltage, overcurrent protection to motor magnet ring polarity detection system.
For ease of it will be appreciated by those skilled in the art that hereafter to the motor magnet ring polarity detection circuit/system of above-described embodiment
Operation principle be briefly described.It should be noted that the numerical value in following examples is merely illustrative description, it is impossible to be interpreted as
The whole of technical scheme, can not think that concrete numerical value is construed as limiting to technical scheme.
Fig. 3 is refer to, the part signal stream of motor magnet ring polarity detection circuit disclosed in above-described embodiment is illustrated, with suddenly
Your device is to illustrate as a example by HAL575, vehicle power VBatFlow through the first pull-up resistor R1 and polarity collection point Q places branch road
Electric current IhollFor two intervals：When motor magnet ring polarity is N poles, electric current IhollFor low current, in 5～6.9mA of interval；Work as electricity
When machine magnet ring polarity is S poles, electric current IhollFor high current, in 12～17mA of interval.This two different interval electric currents are being passed through
Also two different interval polar voltages V can be formed after division module 2Q, specifically, polarity when motor magnet ring polarity is S poles
Voltage VQPolar voltages V being higher than when motor magnet ring polarity is N polesQ；Therefore, by first comparator 4 by polar voltages VQWith
Reference voltage compares, it can be determined that go out polar voltages VQBelong to higher interval voltage, or relatively low interval voltage, so as to sentence
Break and motor magnet ring polarity.
In order that first comparator 4 can distinguish polar voltages VQBelong between high voltage region, or between low-voltage area,
The reference voltage V of the input of first comparator 4refShould be between polar voltages VQMaximum and polar voltages V between low-voltage areaQIt is high
Between the minimum of a value of voltage range, then, it is desirable to flow through the reference current of the second pull-up resistor R2 and connecting node O place branch road
IrefShould be between reference current IhollThe interval maximum of low current and electric current IhollBetween the interval minimum of a value of high current, for example
Between 6.9～12mA of interval.In order to reduce because of systematic error caused by the factors such as current deviation, in a preferred embodiment, reference
Electric current IrefElectric current I should be elected ashollThe interval maximum of low current and electric current IhollCentre between the interval minimum of a value of high current
Value, such as (6.9+12)/2mA, so as to improve the reliability of system.In a particular embodiment, can be by adjusting with reference to electricity
The parameter of each components and parts is realizing reference current I in die block 3refThe adjustment of size, is limited to the restriction of length, concrete adjustment side
Formula cannot be exhaustive, will not be described here.
It should be noted that in a particular embodiment：
(1) when the normal phase input end of first comparator 4 is input into polar voltages VQ, inverting input input reference voltage Vref
When.When polar voltages VQMore than reference voltage VrefWhen, the output end of first comparator 4 output high level illustrates polar voltages VQ
Between high voltage region, so as to judge that motor magnet ring polarity is S poles；Conversely, the output end of first comparator 4 output low level, explanation
Polar voltages VQBetween low-voltage area, so as to judge that motor magnet ring polarity is N poles.
(2) when the inverting input of first comparator 4 is input into polar voltages VQ, normal phase input end input reference voltage Vref
When.When polar voltages VQMore than reference voltage VrefWhen, the output end of first comparator 4 output low level illustrates polar voltages VQ
Between low-voltage area, so as to judge that motor magnet ring polarity is N poles；Conversely, the output end of first comparator 4 output high level, explanation
Polar voltages VQBetween high voltage region, so as to judge that motor magnet ring polarity is S poles.
Motor magnet ring polarity detection circuit provided in an embodiment of the present invention and system, because reference voltage module is connected to car
Power supply is carried, according to the voltage of vehicle power reference voltage is generated, the reference voltage is compared as the benchmark of polar voltages
Compared with, so that reference voltage can follow the fluctuation of vehicle carried power voltage and change, then so that as the ginseng of benchmark
Examining voltage can be adaptively adjusted.Relative to the mode of reference voltage fixed in prior art, can reduce because of vehicle mounted electric
Source voltage pulsation and the systematic error that causes, it is achieved thereby that more precisely detecting motor magnet ring polarity.
Used as optional technical scheme, the second pull-up resistor and the first pull-up resistor have identical resistance, so as to so that
Second pull-up resistor of reference voltage module is carrying out being depressured the reference voltage and the first pull-up electricity that obtain to vehicle carried power voltage
Resistance is carrying out being depressured the voltage for obtaining polarity collection point quite to vehicle carried power voltage, so that reference voltage being capable of self adaptation
Ground adjustment, so that reference voltage is suitable with the voltage of polarity collection point.
Used as optional technical scheme, first resistor and 3rd resistor have an identical resistance, second resistance and the 4th electric
Resistance has identical resistance, so that being separately input into the polarity collection point voltage and reference voltage tool at first comparator two ends
There is suitable peripheral circuit environment, systematic error can be more effectively reduced then, improve reference voltage and follow vehicle power
The adaptivity of voltage change.
Obviously, above-described embodiment is only intended to clearly illustrate example, and not to the restriction of embodiment.It is right
For those of ordinary skill in the art, can also make on the basis of the above description other multi-forms change or
Change.There is no need to be exhaustive to all of embodiment.And the obvious change thus extended out or
Among changing still in the protection domain of the invention.
Claims (9)
1. a kind of motor magnet ring polarity detection circuit, it is characterised in that include：
Hall acquisition module (1), for gathering the power information of vehicle power；
Division module (2), is connected to the polarity collection point (Q) of the Hall acquisition module (1), for the polarity collection point
(Q) current potential carries out partial pressure and obtains the polar voltages after partial pressure；
Reference voltage module (3), is connected to the vehicle power, for generating with reference to electricity according to the voltage of the vehicle power
Pressure；
First comparator (4), its input is respectively connecting to the division module (2) and the reference voltage module (3), to institute
State polar voltages and the reference voltage is compared the comparative result obtained for characterizing the motor magnet ring polarity.
2. motor magnet ring polarity detection circuit as claimed in claim 1, it is characterised in that Hall acquisition module (1) bag
Include：
For the first pull-up resistor (R1) and the Hall device that are connected serially between the vehicle power and ground, first pull-up resistor
(R1) and the Hall device series connection node be the polarity collection point (Q).
3. motor magnet ring polarity detection circuit as claimed in claim 2, it is characterised in that reference voltage module (3) bag
Include：
For the second pull-up resistor (R2) for being connected serially between the vehicle power and ground and power supply unit (31)；
Second pull-up resistor (R2) has identical resistance with first pull-up resistor (R1)；
Said supply unit (31) is for providing dc source；
The connecting node of second pull-up resistor (R2) and said supply unit (31) exports the reference voltage.
4. motor magnet ring polarity detection circuit as claimed in claim 3, it is characterised in that said supply unit (31) includes：
It is sequentially connected in series transistor (T1) and reference resistance (R and ground between in second pull-up resistor (R2)ref)；
Second comparator, its first input end is used to be connected to dc source, and its second input is connected to the transistor
And reference resistance (the R (T1)ref) between, its output end is connected to the control end of the transistor (T1).
5. motor magnet ring polarity detection circuit as claimed in claim 4, it is characterised in that said supply unit (31) is also wrapped
Include：
Regulating resistor, for being connected between the dc source and the first input end of second comparator, for adjusting
To the current potential that the first input end of second comparator is input into.
6. the motor magnet ring polarity detection circuit as described in claim 1-5 any one, it is characterised in that the division module
(2) include：
First resistor (R21) and second resistance (R22) of the polarity collection point (Q) and ground between is connected serially to, described first is electric
The voltage of the connecting node output of resistance (R21) and the second resistance (R22) is the polar voltages.
7. motor magnet ring polarity detection circuit as claimed in claim 6, it is characterised in that second pull-up resistor (R2) and
Also include between the first comparator (4)：3rd resistor (R31) and the 4th resistance (R32)；
The 3rd resistor (R31) and the 4th resistance (R32) are sequentially connected in series on second pull-up resistor (R2) and ground
Between, the connecting node of the 3rd resistor (R31) and the 4th resistance (R32) is connected to the defeated of the first comparator (4)
Enter end.
8. motor magnet ring polarity detection circuit as claimed in claim 7, it is characterised in that
The first resistor (R21) and the 3rd resistor (R31) have identical resistance；
The second resistance (R22) and the 4th resistance (R32) have identical resistance.
9. a kind of motor magnet ring polarity detection system, it is characterised in that include：
Motor magnet ring polarity detection circuit as described in claim 1-8 any one；
Controller, is connected to the output end of the first comparator (4), judges to obtain the electricity for receiving the comparative result
The polarity of machine magnet ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610948804.3A CN106597328A (en) | 2016-10-26 | 2016-10-26 | Motor magnetic ring polarity detection circuit and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610948804.3A CN106597328A (en) | 2016-10-26 | 2016-10-26 | Motor magnetic ring polarity detection circuit and system |
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| Publication Number | Publication Date |
|---|---|
| CN106597328A true CN106597328A (en) | 2017-04-26 |
Family
ID=58590487
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610948804.3A Pending CN106597328A (en) | 2016-10-26 | 2016-10-26 | Motor magnetic ring polarity detection circuit and system |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4495450A (en) * | 1982-12-29 | 1985-01-22 | Sanyo Electric Co., Ltd. | Control device for brushless motor |
| CN1365007A (en) * | 2000-12-04 | 2002-08-21 | 常绿韩国株式会社 | Device and method for measuring Hull effect |
| CN101641608A (en) * | 2007-06-22 | 2010-02-03 | 罗姆股份有限公司 | Magnetic sensor circuit and electronic apparatus using same |
| CN102386845A (en) * | 2011-11-15 | 2012-03-21 | 吴江市松陵镇诚达模具厂 | Motor speed regulation device for fan |
| CN104767458A (en) * | 2015-05-05 | 2015-07-08 | 威海人合机电股份有限公司 | Square wave distortion compensation method and device of induction motor control system |
-
2016
- 2016-10-26 CN CN201610948804.3A patent/CN106597328A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4495450A (en) * | 1982-12-29 | 1985-01-22 | Sanyo Electric Co., Ltd. | Control device for brushless motor |
| CN1365007A (en) * | 2000-12-04 | 2002-08-21 | 常绿韩国株式会社 | Device and method for measuring Hull effect |
| CN101641608A (en) * | 2007-06-22 | 2010-02-03 | 罗姆股份有限公司 | Magnetic sensor circuit and electronic apparatus using same |
| CN102386845A (en) * | 2011-11-15 | 2012-03-21 | 吴江市松陵镇诚达模具厂 | Motor speed regulation device for fan |
| CN104767458A (en) * | 2015-05-05 | 2015-07-08 | 威海人合机电股份有限公司 | Square wave distortion compensation method and device of induction motor control system |
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