CN101741205A - Method for arranging variable-frequency motor position sensor of washing machine - Google Patents
Method for arranging variable-frequency motor position sensor of washing machine Download PDFInfo
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- CN101741205A CN101741205A CN200910185825A CN200910185825A CN101741205A CN 101741205 A CN101741205 A CN 101741205A CN 200910185825 A CN200910185825 A CN 200910185825A CN 200910185825 A CN200910185825 A CN 200910185825A CN 101741205 A CN101741205 A CN 101741205A
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- washing machine
- frequency motor
- position sensor
- magnet steel
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Abstract
The invention discloses a method for arranging a variable-frequency motor position sensor of a washing machine. At least three hall sensors are uniformly arranged on one side of a group of steel magnets, and are arranged at N poles or S poles of the steel magnets in a comparatively concentrated mode. In the method, the hall sensors are arranged at one pole of each steel magnet in a concentrated mode, but not distributed between two poles of each steel magnet, so the structure can save at least half of hall plates, and the same detection effect can be achieved.
Description
Technical field
The present invention relates to the method for arranging in washing machine field, particularly a kind of variable-frequency motor position sensor of washing machine.
Technical background
What variable-frequency washing machine adopted is the brush DC variable-frequency motor, and this motor is with respect to traditional squirrel cage motor, has energy-conservation, a series of advantages such as efficient is high, the output torque is big, noise is little, operate steadily, rotating speed adjustable.Position transducer is the important composition parts of variable-frequency motor, has two effects: i.e. the residing position of detection rotor permanent magnet pole relative stator armature winding, so that determine the conducting order of power transistor in the motor commutation drive circuit; Determine the conducting pin of power transistor in the electronic commutation drives, thereby determine the magnetic state of armature field.
The general Hall Mageneto-sensitive type position transducer that adopts on the washing machine, it has simple in structure, light weight, easy for installation, low cost of manufacture and is convenient to advantage such as large-scale production.The basic principle of Hall Mageneto-sensitive type position transducer is: when the bipolarity Hall element is the N utmost point when magnetic field of living in, and the output high level signal, when magnetic field of living in is the S utmost point, the output low level signal.This magnetic field is exactly the magnet steel of rotor, common corresponding one group of magnet steel (i.e. N+S), 3 Hall elements (U, V, W) are arranged, extremely shown in Figure 6 as Fig. 1, because magnet steel rotates forward with respect to Hall element, 3 Hall elements also change with respect to the position of magnet steel, and these three transducers are evenly distributed between the N utmost point and the S utmost point of two blocks of magnet steel, can detect 6 different position signallings altogether, as shown in Table 1.
Summary of the invention
Technical problem to be solved by this invention provides a kind of method for arranging of the variable-frequency motor position sensor of washing machine that can economize the material material-saving, reduce cost.
The technical scheme of technical solution problem of the present invention is: the method for arranging of variable-frequency motor position sensor of washing machine, at least three Hall elements are evenly arranged in a side of one group of magnet steel, and relative centralized arrangement is in the N of this magnet steel utmost point or S utmost point position.
The present invention compared with prior art with the wherein utmost point of Hall element centralized arrangement at magnet steel, but not is distributed between the two poles of the earth of magnet steel, and this structure can be saved the Hall Plate of half at least, and can reach identical detection effect.
Description of drawings
Fig. 1 to 6 is the position transducer position distribution view of prior art;
Fig. 7 to 12 is a position transducer position distribution view of the present invention.
Embodiment
A kind of method for arranging of variable-frequency motor position sensor of washing machine, at least three Hall elements are evenly arranged in a side of one group of magnet steel 4, and relative centralized arrangement is in the N of this magnet steel 4 utmost point or S utmost point position.Described first, second and third Hall element 1,2,3 is evenly arranged with respect to one group of magnet steel 4, and all be positioned at the homonymy of this magnet steel 4, first, second and third Hall element 1,2,3 is respectively applied for and detects U, V, the W phase voltage signal is a hall signal, and first, second and third Hall element 1,2,3 is called U, V, W phase transducer again.Described first, second and third Hall element 1,2,3 relative centralized arrangement are in the N of this magnet steel 4 utmost point or S utmost point position.Described first, second and third Hall element 1,2,3 is positioned on the Hall Plate, and shown in Fig. 7 to 12, because magnet steel 4 rotates forward with respect to Hall element, first, second and third Hall element 1,2,3 positions with respect to magnet steel 4 also change.
During common Hall Plate detection signal, the level of sensing during over against the N level when Hall element is 1, and the level of sensing during over against the S level is 0, in one-period, the variation of detected hall signal as shown in Table 1:
Table one
| Sequence number | ??U | ??V | ??W |
| ??1 | ??1 | ??1 | ??0 |
| ??2 | ??1 | ??0 | ??0 |
| ??3 | ??1 | ??0 | ??1 |
| ??4 | ??0 | ??0 | ??1 |
| ??5 | ??0 | ??1 | ??1 |
| ??6 | ??0 | ??1 | ??0 |
We know that 180 ° two functional values are just the opposite on phase place rule by SIN function.Therefore, with 180 ° of W phase transducer reaches, W phase transducer is placed between U, the V phase transducer, the area of Hall Plate can reduce half like this, raw material have been significantly reduced, and the detected hall signal negate of W phase transducer----promptly obtained/the W signal, in one-period, the variation of detected hall signal such as following table:
| Sequence number | ??U | ??V | ??W | ??/W |
| ??1 | ??1 | ??1 | ??1 | ??0 |
| ??2 | ??1 | ??0 | ??1 | ??0 |
| ??3 | ??1 | ??0 | ??0 | ??1 |
| ??4 | ??0 | ??0 | ??0 | ??1 |
| ??5 | ??0 | ??1 | ??0 | ??1 |
| ??6 | ??0 | ??1 | ??1 | ??0 |
U in U in the contrast table one, V, W and the table two, V ,/W, both are identical, so the present invention is feasible, and can save the closely material of half, reach same effect.
Claims (4)
1. the method for arranging of variable-frequency motor position sensor of washing machine, it is characterized in that: at least three Hall elements are evenly arranged in a side of one group of magnet steel, and relatively centralized arrangement in the N of this magnet steel utmost point or S utmost point position.
2. the method for arranging of variable-frequency motor position sensor of washing machine according to claim 1, it is characterized in that: described first, second and third Hall element is evenly arranged with respect to one group of magnet steel, and all is positioned at the homonymy of this magnet steel.
3. the method for arranging of variable-frequency motor position sensor of washing machine according to claim 1 and 2, it is characterized in that: the relative centralized arrangement of described first, second and third Hall element is in the N of this magnet steel utmost point or S utmost point position.
4. the method for arranging of variable-frequency motor position sensor of washing machine according to claim 2, it is characterized in that: described first, second and third Hall element is positioned on the Hall Plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910185825A CN101741205A (en) | 2009-12-04 | 2009-12-04 | Method for arranging variable-frequency motor position sensor of washing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910185825A CN101741205A (en) | 2009-12-04 | 2009-12-04 | Method for arranging variable-frequency motor position sensor of washing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101741205A true CN101741205A (en) | 2010-06-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910185825A Pending CN101741205A (en) | 2009-12-04 | 2009-12-04 | Method for arranging variable-frequency motor position sensor of washing machine |
Country Status (1)
| Country | Link |
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| CN (1) | CN101741205A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108791682A (en) * | 2018-06-15 | 2018-11-13 | 天津永霖科技有限公司 | A kind of the relative space position structure and speed-type assistance sensor of Hall and magnet steel |
| CN111424399A (en) * | 2020-02-25 | 2020-07-17 | 宁波普尔机电制造有限公司 | Control system and method for variable frequency washing machine based on direct current brushless motor drive |
-
2009
- 2009-12-04 CN CN200910185825A patent/CN101741205A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108791682A (en) * | 2018-06-15 | 2018-11-13 | 天津永霖科技有限公司 | A kind of the relative space position structure and speed-type assistance sensor of Hall and magnet steel |
| CN111424399A (en) * | 2020-02-25 | 2020-07-17 | 宁波普尔机电制造有限公司 | Control system and method for variable frequency washing machine based on direct current brushless motor drive |
| CN111424399B (en) * | 2020-02-25 | 2022-06-24 | 宁波普尔机电制造有限公司 | Control system and method for variable frequency washing machine based on direct current brushless motor drive |
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Application publication date: 20100616 |