CN2894054Y - Magnetosensitive Z element DC brushless electric machine - Google Patents
Magnetosensitive Z element DC brushless electric machine Download PDFInfo
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- CN2894054Y CN2894054Y CN 200620020675 CN200620020675U CN2894054Y CN 2894054 Y CN2894054 Y CN 2894054Y CN 200620020675 CN200620020675 CN 200620020675 CN 200620020675 U CN200620020675 U CN 200620020675U CN 2894054 Y CN2894054 Y CN 2894054Y
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Abstract
A Magnetic sensitive Z element brushless direct current motor relates to a brushless direct current motor, which solves the problems of large volume, complex structure, inconvenient orientation, low efficiency and bad seismic resistance when the position sensors of magnetoelectric type, Hall element type, photoelectric type, and high frequency coupling type are applied in the brushless direct current motor. The magnetic sensitive Z element of this utility model is arranged right above the rotating plane of the external rotor magnetic steel (10), the signals output by the magnetic sensitive Z element output the first signal (G) through the processing of the first signal processing circuit (3), the first signal goes across the second signal processing circuit (4) and output the second signal (S), these two signals work cooperatively, go through AB / CD winding gate circuit (5) C/D winding gate circuit (6), and A/B winding gate circuit (7), and then control the first winding (A), the second winding (B), the third winding (C), and the fourth winding (D) to guide circuit in sequence. The utility model is simple in commutation controlling principle, low in power dissipation, and high in sensitivity, in addition, the application circuit is easy for integration and miniaturization.
Description
Technical field
The utility model relates to a kind of dc brushless motor.
Background technology
Brushless DC motor normally is made up of motor body, rotor-position sensor and electronic switching circuit three parts.Brushless DC motor is after energising, and position transducer converts the position signalling of rotor to the signal of telecommunication, goes to control the stator winding commutation by electronic switching circuit then, makes it produce correct magnetic field in good time, promotes the rotation that rotor magnetic steel continues.At present, position transducer commonly used has several forms such as electromagnetic position sensor, photoelectric position sensor, magneto-electric position transducer, high-frequency coupling formula position transducer in DC Brushless Motor.Adopt the more of magneto-electric position transducer both at home and abroad, its advantage is that output signal is big, and working stability is reliable, and not tight to environmental requirement, temperature range is wide, and installing and locating is convenient, and input impedance easy and the electronic commutation circuit is complementary the positional precision height; But also there is following shortcoming in it: volume is big, the process structure complexity, and change turns to difficulty.Adopt the simple volume of brushless DC motor configurations of Hall element position transducer little, change turns to easily; But it settles location inconvenience, and sheet of elements is thin frangible, and line is carefully easily broken, efficient low (will add 20 milliamperes Control current as the germanium Hall plate, adopt two Hall plates will consume 40 milliamperes electric current), output signal is little, the circuit debugging is not busy difficult, and environment and working temperature are had certain requirement, and is shatter-proof poor.Though the photoelectric position sensor structure is also simple, realization is convenient, owing to use light source bulb, shock resistance is relatively poor, and shaking more violent occasion should not adopt.The structure of high-frequency coupling formula position transducer is the simplest, but output signal is little, and desiring to make the bigger brushless DC motor of power will increase number of stages of amplification.
The utility model content
Magneto-electric, Hall element formula, photoelectric type, high-frequency coupling formula position sensor applications existing volume when the brshless DC motor is big in order to solve, complex structure, location inconvenience, efficient are low, the problem of shock resistance difference, the utility model provides a kind of magnetosensitive Z element dc brushless motor, promptly makes the dc brushless motor of position transducer with magnetosensitive Z element.
Magnetosensitive Z element dc brushless motor of the present utility model comprises the dc brushless motor body, described dc brushless motor body has following two kinds of structures: (1) described motor body comprises external stator and the internal rotor magnet steel that is wound with or is inlaid with first winding, second winding, the tertiary winding and the 4th winding, leaves the gap between the outer surface of the inner surface of external stator and internal rotor magnet steel; (2) described motor body comprises internal stator and the external rotor magnet steel that is wound with or is inlaid with first winding, second winding, the tertiary winding and the 4th winding, the inner surface of the outer surface of internal stator and external rotor magnet steel leaves the gap, and the inner surface of external rotor magnet steel is pasted with permanent magnet pole;
Described magnetosensitive Z element dc brushless motor also comprises DC power supply+V, magnetosensitive Z element, first signal processing circuit, the secondary signal treatment circuit, AB/CD winding gating circuit, C/D winding gating circuit and A/B winding gating circuit, the output of DC power supply+V connects the anode of magnetosensitive Z element and the electrode input end of first signal processing circuit, the negative electrode of magnetosensitive Z element connects the negative input and the ground connection of first signal processing circuit, the output of first signal processing circuit connects the secondary signal treatment circuit respectively, an input of C/D winding gating circuit and A/B winding gating circuit, the output of secondary signal treatment circuit connects the input of AB/CD winding gating circuit, an output of AB/CD winding gating circuit connects another input of C/D winding gating circuit, and another output of AB/CD winding gating circuit connects another input of A/B winding gating circuit; For above-mentioned (1) motor of planting structure, magnetosensitive Z element be arranged on the internal rotor magnet steel rotational plane directly over, promptly when the internal rotor magnet steel turn to magnetosensitive Z element under the time, correspondence is the pole end piece of internal rotor magnet steel under the magnetosensitive Z element; For above-mentioned (2) motor of planting structure, magnetosensitive Z element be arranged on the external rotor magnet steel rotational plane directly over, promptly when the external rotor magnet steel turn to magnetosensitive Z element under the time, under the magnetosensitive Z element to magnetic pole should be arranged.
First signal processing circuit is a filtering shaping circuit, and this circuit is used for the voltage waveform of magnetosensitive Z element output is carried out filtering and shaping and exports the first signal G.The secondary signal treatment circuit is a frequency multiplier circuit, this circuit is used for the cycle of the first signal G is become original twice and exports secondary signal S, signal S makes A by AB/CD winding gating circuit, B or C, wherein one group of winding conducting among two groups of the D, simultaneously, C/D winding gating circuit and A/B winding gating circuit make in A/B and two groups of windings of C/D under the effect of signal G a winding conducting respectively, so just can be under the acting in conjunction of signal G and S, realize winding A by three winding gating circuits, B, C, the orderly gating of D also produces magnetic field, thereby promotes the lasting rotation of rotor.
The utility model utilizes the position transducer of magnetosensitive Z element as dc brushless motor, its commutation control principle is simple, low in energy consumption, highly sensitive, volume is little, simple in structure, the location is convenient, shock resistance is good, and circuit is easy to integrated and miniaturization, makes magnetosensitive Z element that a new application arranged on the dc brushless motor direction.
Description of drawings
Fig. 1 is a structural representation of the present utility model; Fig. 2 and Fig. 3 are internal rotor magnet steel 2 of the present utility model and the schematic diagram of two kinds of different relative positions of magnetosensitive Z element 8; Fig. 4 is the structural representation of embodiment three; Fig. 5 is the corresponding relation sequential chart of the Continuity signal waveform of the signal S of signal G, 4 outputs of secondary signal treatment circuit of signal waveform, 3 outputs of first signal processing circuit of magnetosensitive Z element 8 outputs under a kind of working condition of the dc brushless motor of embodiment one and the first winding A, the second winding B, tertiary winding C, the 4th winding D.
Embodiment
Embodiment one: referring to Fig. 1 to Fig. 3, Fig. 5, the magnetosensitive Z element dc brushless motor of this embodiment is by the dc brushless motor body, DC power supply+V, magnetosensitive Z element 8, first signal processing circuit 3, secondary signal treatment circuit 4, AB/CD winding gating circuit 5, C/D winding gating circuit 6 and A/B winding gating circuit 7 are formed, described motor body comprises and is wound with or is inlaid with the first winding A, the second winding B, the external stator 1 of tertiary winding C and the 4th winding D and internal rotor magnet steel 2 leave the gap between the outer surface of the inner surface of external stator 1 and internal rotor magnet steel 2; The output of DC power supply+V connects the anode of magnetosensitive Z element 8 and the electrode input end of first signal processing circuit 3, the negative electrode of magnetosensitive Z element 8 connects the negative input and the ground connection of first signal processing circuit 3, the output of first signal processing circuit 3 connects secondary signal treatment circuit 4 respectively, an input of C/D winding gating circuit 6 and A/B winding gating circuit 7, the output of secondary signal treatment circuit 4 connects the input of AB/CD winding gating circuit 5, an output of AB/CD winding gating circuit 5 connects another input of C/D winding gating circuit 6, and another output of AB/CD winding gating circuit 5 connects another input of A/B winding gating circuit 7; Magnetosensitive Z element 8 be arranged on internal rotor magnet steel 2 rotational plane directly over, promptly when internal rotor magnet steel 2 turn to magnetosensitive Z element 8 under the time, corresponding under the magnetosensitive Z element 8 is the pole end piece of internal rotor magnet steel 2.
In this embodiment, evenly have four axial pass trough 1-2 on the inner surface of described external stator 1, be provided with salient pole 1-1 between adjacent two axial pass trough 1-2, the first winding A, the second winding B, tertiary winding C and the 4th winding D are wrapped in respectively on four salient pole 1-1 of external stator 1 inner surface, and the first winding A, the second winding B, tertiary winding C are identical with the coil turn of the 4th winding D; Described external stator 1 is formed by stacking by a plurality of silicon steel sheets; Described internal rotor magnet steel 2 has a pair of magnetic pole.Magnetosensitive Z element 8 be fixed on internal rotor magnet steel 2 rotational plane directly over a position on, because the below of magnetosensitive Z element 8 has magnetic pole not have magnetic pole sometimes sometimes, magnetic pole periodically changes from the distance of magnetosensitive Z element 8, the variation of therefore passing the density of line of magnetic force generating period of magnetosensitive Z element 8, voltage and the magnetic field intensity on the magnetosensitive Z element 8 have functional relation under certain condition (shown in first oscillogram among Fig. 5).First signal processing circuit 3 is that the voltage waveform to magnetosensitive Z element 8 output of being used for that comprises the T trigger carries out the circuit that filtering and shaping and output duty cycle are 50% the square wave first signal G.Secondary signal treatment circuit 4 is used for cycle with the first signal G and becomes original twice and duty ratio and still remain 50% and export secondary signal S.When the relative position of internal rotor magnet steel 2 and magnetosensitive Z element 8 as shown in Figure 2, and when the output initial state of T trigger was low level in first signal processing circuit 3, the 4th winding D conducting under the effect of follow-up circuit did not have electric current to pass through in other three windings.The magnetic pole that the 4th winding D energising back produces is the S utmost point in the inboard near rotor, produce clockwise torque with the magnetic pole effect of internal rotor magnet steel 2, make internal rotor magnet steel 2 turn over 90 ° of arrival positions as shown in Figure 3 clockwise, first winding A conducting this moment makes internal rotor magnet steel 2 turn over 90 ° clockwise, the second winding B, tertiary winding C, the 4th winding D conducting in turn in order successively then, rotor is with regard to continuous getting into smooth like this, and what Fig. 5 showed is the signal timing diagram of the dc brushless motor under this working condition.
Embodiment two: referring to Fig. 1 to Fig. 3, Fig. 5, this embodiment with the difference of embodiment one is: evenly have a plurality of axial pass troughs on the inner surface of described external stator 1, a plurality of coils are embedded in the groove of external stator 1 inner surface successively and constitute the first winding A, the second winding B, tertiary winding C and the 4th winding D respectively, and the first winding A, the second winding B, tertiary winding C and the 4th winding D account for 90 ° of electrical degrees in the direction of the clock successively.Other compositions and annexation thereof are identical with embodiment one.This tool execution mode adopts conventional rule mode that coil is embedded in the stator slot, and stator slot is by being that a component is four facies tracts with 90 ° of electrical degrees clockwise, and these four facies tracts constitute the first winding A, the second winding B, tertiary winding C and the 4th winding D successively.
Embodiment three: referring to Fig. 4, the magnetosensitive Z element dc brushless motor of this embodiment is by the dc brushless motor body, DC power supply+V, magnetosensitive Z element 8, first signal processing circuit 3, secondary signal treatment circuit 4, AB/CD winding gating circuit 5, C/D winding gating circuit 6 and A/B winding gating circuit 7 are formed, described motor body comprises and is wound with or is inlaid with the first winding A, the second winding B, the internal stator 9 of tertiary winding C and the 4th winding D and external rotor magnet steel 10, the inner surface of the outer surface of internal stator 9 and external rotor magnet steel 10 leaves the gap, and the inner surface of external rotor magnet steel 10 is pasted with permanent magnet pole 11; The output of DC power supply+V connects the anode of magnetosensitive Z element 8 and the electrode input end of first signal processing circuit 3, the negative electrode of magnetosensitive Z element 8 connects the negative input and the ground connection of first signal processing circuit 3, the output of first signal processing circuit 3 connects secondary signal treatment circuit 4 respectively, an input of C/D winding gating circuit 6 and A/B winding gating circuit 7, the output of secondary signal treatment circuit 4 connects the input of AB/CD winding gating circuit 5, an output of AB/CD winding gating circuit 5 connects another input of C/D winding gating circuit 6, another output of AB/CD winding gating circuit 5 connects another input of A/B winding gating circuit 7, magnetosensitive Z element 8 be arranged on external rotor magnet steel 10 rotational plane directly over, promptly when external rotor magnet steel 10 turn to magnetosensitive Z element 8 under the time, under the magnetosensitive Z element 8 to magnetic pole 11 should be arranged.Described external rotor magnet steel 10 has a pair of magnetic pole.
Claims (9)
1, magnetosensitive Z element dc brushless motor, described magnetosensitive Z element dc brushless motor comprises the dc brushless motor body, described motor body comprises external stator (1) and the internal rotor magnet steel (2) that is wound with or is inlaid with first winding (A), second winding (B), the tertiary winding (C) and the 4th winding (D), leaves the gap between the outer surface of the inner surface of external stator (1) and internal rotor magnet steel (2); It is characterized in that described magnetosensitive Z element dc brushless motor also comprise DC power supply (+V), magnetosensitive Z element (8), first signal processing circuit (3), secondary signal treatment circuit (4), AB/CD winding gating circuit (5), C/D winding gating circuit (6) and A/B winding gating circuit (7), (+V) output connects the anode of magnetosensitive Z element (8) and the electrode input end of first signal processing circuit (3) to DC power supply, the negative electrode of magnetosensitive Z element (8) connects the negative input and the ground connection of first signal processing circuit (3), the output of first signal processing circuit (3) connects secondary signal treatment circuit (4) respectively, an input of C/D winding gating circuit (6) and A/B winding gating circuit (7), the output of secondary signal treatment circuit (4) connects the input of AB/CD winding gating circuit (5), an output of AB/CD winding gating circuit (5) connects another input of C/D winding gating circuit (6), and another output of AB/CD winding gating circuit (5) connects another input of A/B winding gating circuit (7); Magnetosensitive Z element (8) be arranged on internal rotor magnet steel (2) rotational plane directly over, promptly when internal rotor magnet steel (2) turn to magnetosensitive Z element (8) under the time, corresponding under the magnetosensitive Z element (8) is the pole end piece of internal rotor magnet steel (2).
2, magnetosensitive Z element dc brushless motor according to claim 1, it is characterized in that evenly having four axial pass troughs (1-2) on the inner surface of described external stator (1), be provided with salient pole (1-1) between adjacent two axial pass troughs (1-2), first winding (A), second winding (B), the tertiary winding (C) and the 4th winding (D) are wrapped in respectively on four salient poles (1-1) of external stator (1) inner surface, and first winding (A), second winding (B), the tertiary winding (C) are identical with the coil turn of the 4th winding (D).
3, magnetosensitive Z element dc brushless motor according to claim 1, it is characterized in that evenly having a plurality of axial pass troughs on the inner surface of described external stator (1), a plurality of coils are embedded in the groove of external stator (1) inner surface successively and constitute first winding (A), second winding (B), the tertiary winding (C) and the 4th winding (D) respectively, and first winding (A), second winding (B), the tertiary winding (C) and the 4th winding (D) account for 90 ° of electrical degrees in the direction of the clock successively.
4, magnetosensitive Z element dc brushless motor according to claim 1 is characterized in that described external stator (1) is formed by stacking by a plurality of silicon steel sheets.
5, magnetosensitive Z element dc brushless motor according to claim 1 is characterized in that described internal rotor magnet steel (2) has a pair of magnetic pole.
6, magnetosensitive Z element dc brushless motor according to claim 1, it is characterized in that described first signal processing circuit (3) is a filtering shaping circuit, this circuit is used for the voltage waveform of magnetosensitive Z element (8) output is carried out filtering and shaping and exports first signal (G).
7, magnetosensitive Z element dc brushless motor according to claim 1 is characterized in that described secondary signal treatment circuit (4) is a frequency multiplier circuit, and this circuit is used for the cycle of first signal (G) is become original twice and exports secondary signal (S).
8, magnetosensitive Z element dc brushless motor, described magnetosensitive Z element dc brushless motor comprises the dc brushless motor body, described motor body comprises internal stator (9) and the external rotor magnet steel (10) that is wound with or is inlaid with first winding (A), second winding (B), the tertiary winding (C) and the 4th winding (D), the inner surface of the outer surface of internal stator (9) and external rotor magnet steel (10) leaves the gap, and the inner surface of external rotor magnet steel (10) is pasted with permanent magnet pole (11); It is characterized in that described magnetosensitive Z element dc brushless motor also comprise DC power supply (+V), magnetosensitive Z element (8), first signal processing circuit (3), secondary signal treatment circuit (4), AB/CD winding gating circuit (5), C/D winding gating circuit (6) and A/B winding gating circuit (7), (+V) output connects the anode of magnetosensitive Z element (8) and the electrode input end of first signal processing circuit (3) to DC power supply, the negative electrode of magnetosensitive Z element (8) connects the negative input and the ground connection of first signal processing circuit (3), the output of first signal processing circuit (3) connects secondary signal treatment circuit (4) respectively, an input of C/D winding gating circuit (6) and A/B winding gating circuit (7), the output of secondary signal treatment circuit (4) connects the input of AB/CD winding gating circuit (5), an output of AB/CD winding gating circuit (5) connects another input of C/D winding gating circuit (6), another output of AB/CD winding gating circuit (5) connects another input of A/B winding gating circuit (7), magnetosensitive Z element (8) be arranged on external rotor magnet steel (10) rotational plane directly over, promptly when external rotor magnet steel (10) turn to magnetosensitive Z element (8) under the time, under the magnetosensitive Z element (8) to magnetic pole (11) should be arranged.
9, magnetosensitive Z element dc brushless motor according to claim 8 is characterized in that described external rotor magnet steel (10) has a pair of magnetic pole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620020675 CN2894054Y (en) | 2006-04-26 | 2006-04-26 | Magnetosensitive Z element DC brushless electric machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620020675 CN2894054Y (en) | 2006-04-26 | 2006-04-26 | Magnetosensitive Z element DC brushless electric machine |
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| Publication Number | Publication Date |
|---|---|
| CN2894054Y true CN2894054Y (en) | 2007-04-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200620020675 Expired - Fee Related CN2894054Y (en) | 2006-04-26 | 2006-04-26 | Magnetosensitive Z element DC brushless electric machine |
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| CN (1) | CN2894054Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106208895A (en) * | 2016-08-05 | 2016-12-07 | 曹兵 | The DC driven method of alternating current generator, system and utilize the synchronous motor of this system |
| CN108351224A (en) * | 2015-10-22 | 2018-07-31 | 罗伯特·博世有限公司 | Angular sensor |
-
2006
- 2006-04-26 CN CN 200620020675 patent/CN2894054Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108351224A (en) * | 2015-10-22 | 2018-07-31 | 罗伯特·博世有限公司 | Angular sensor |
| US10895475B2 (en) | 2015-10-22 | 2021-01-19 | Robert Bosch Gmbh | Angular position sensor |
| CN108351224B (en) * | 2015-10-22 | 2021-05-11 | 罗伯特·博世有限公司 | Rotation angle sensor |
| CN106208895A (en) * | 2016-08-05 | 2016-12-07 | 曹兵 | The DC driven method of alternating current generator, system and utilize the synchronous motor of this system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070425 |