CN202255349U - Angle measuring device of wind power pitch system - Google Patents
Angle measuring device of wind power pitch system Download PDFInfo
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- CN202255349U CN202255349U CN2011204020542U CN201120402054U CN202255349U CN 202255349 U CN202255349 U CN 202255349U CN 2011204020542 U CN2011204020542 U CN 2011204020542U CN 201120402054 U CN201120402054 U CN 201120402054U CN 202255349 U CN202255349 U CN 202255349U
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- wheel hub
- wind power
- scrambler
- hall switch
- hub
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- 238000005259 measurement Methods 0.000 claims description 8
- 238000010586 diagram Methods 0.000 description 2
- 206010010774 Constipation Diseases 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N ferric oxide Chemical compound O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 230000009191 jumping Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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Abstract
The utility model discloses an angle measuring device of a wind power pitch system, which comprises a hub. The hub comprises a hub inner gear ring, an A coder is arranged in the hub and connected with a main controller, a hall approaching switch is further arranged in the hub, one end of the hall approaching switch faces right toward the inner gear face of the hub inner gear ring, and the other end of the hall approaching switch is connected with the main controller. The hall approaching switch is used for replacing a B coder in the prior art, a redundant function of a coder group can also be achieved, and simultaneously using cost is further reduced.
Description
Technical field
The utility model belongs to wind power generation field, relates in particular to a kind of angle measurement unit of wind power pitch-controlled system.
Background technology
At present, A, two scramblers of B are housed all in the wind power pitch-controlled system, when the absolute value position deviation of two scramblers was excessive, pitch-controlled system was put away the oars with the protection blower fan, prevented that scrambler saltus step or scrambler from damaging the back pitch-controlled system and continuing operation.Because the B scrambler is absolute value encoder, price is more expensive, and that two scrambler angular deviations also need not be provided with is very little.
Proximity Hall switch is to utilize Hall element to the changes of magnetic field of its present position and produce the principle of switching signal, when magnetic bodies during near proximity Hall switch, does not need Mechanical Contact and apply any pressure switch motion can take place.
The utility model content
In view of the defective that above-mentioned prior art exists, the purpose of the utility model is the angle measurement unit that proposes a kind of wind power pitch-controlled system.
The purpose of the utility model will be achieved through following technical scheme:
A kind of angle measurement unit of wind power pitch-controlled system; Comprise a wheel hub; Said wheel hub comprises the wheel hub ring gear, is provided with the A scrambler in the said wheel hub, and said A scrambler is connected with master control; Also be provided with a proximity Hall switch in the said wheel hub, the inner toothed surface that one of said proximity Hall switch is rectified said wheel hub ring gear; The other end of said proximity Hall switch is connected with said master control.
Preferably, the angle measurement unit of above-mentioned wind power pitch-controlled system, wherein: said A scrambler is the angle absolute value encoder.
The utility model has replaced B scrambler of the prior art with proximity Hall switch, can realize scrambler crowd's redundancy feature equally, has also reduced use cost simultaneously.
Following constipation closes the embodiment accompanying drawing, the embodiment of the utility model is done further to detail, so that the utility model technical scheme is easier to understand, grasp.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment 1;
Fig. 2 is that the utility model embodiment 1 pulse duty factor is 50% o'clock a proximity Hall switch output signal diagram;
Fig. 3 is that the utility model embodiment 1 pulse duty factor is 80% o'clock a proximity Hall switch output signal diagram.
Embodiment
The angle measurement unit of a kind of wind power pitch-controlled system of present embodiment; As shown in Figure 1, comprise wheel hub 1, wheel hub 1 comprises wheel hub ring gear 2; Be provided with the A scrambler in the wheel hub 1; The A scrambler is connected with master control, also is provided with proximity Hall switch 3 in the wheel hub 1, the inner toothed surface that one of proximity Hall switch 3 is rectified wheel hub ring gear 2; Another degree of proximity Hall switch 3 is connected with master control.The A scrambler is an absolute value encoder.
When wheel hub 1 rotates, on the wheel hub ring gear 2 each tooth through proximity Hall switch 3, can make all that proximity Hall switch 3 is opened, closure once, promptly form a pulse.Suppose on the wheel hub ring gear 2 that one has 140 teeth; Then wheel hub 1 turns around, and 360 °/140=2.57 ° is represented in 140 pulses of proximity Hall switch 3 output, each pulse; Behind the initial position of having debugged A scrambler and proximity Hall switch 3; Master control can come the calculating location deviation according to the absolute position of the A scrambler that obtains and the umber of pulse of proximity Hall switch 3, and master control can realize the scrambler redundancy feature through rational comparison range is set.
A nearly if desired step is segmented the angle of the pulse representative that proximity Hall switch 3 is exported, and to improve resolving accuracy, then can calculate through the time that high-low level continued of paired pulses.
As shown in Figure 2, pulse duty factor is 50% o'clock, and high level time and low level time respectively account for half the, and it is half the promptly can the angle of each pulse representative to be continued segmentation.If because of velocity variations causes high-low level time different, can take to detect and jump edge and the method for jumping the edge down, because no matter how speed changes, proximity Hall switch 3 output pulses will change after the position of the tooth of wheel hub ring gear 2 arrived ad-hoc location.And for example shown in Figure 3, wheel hub 1 is at the uniform velocity through a complete tooth and gap, and proximity Hall switch 3 pulse duty factors are 80%, explains that the ratio that toothed portion accounts in each tooth angle degree pulse is 80%, then:
Tooth angle degree=360 °/wheel hub the number of teeth * 80%
Gap angle=360 °/wheel hub the number of teeth * 20%
Jump the edge and jump the edge down through detecting going up of pulse, just can confirm the angle of tooth and the angle in gap.
Present embodiment has replaced B scrambler of the prior art with proximity Hall switch 3, can realize scrambler crowd's redundancy feature equally, has also reduced use cost simultaneously.
The utility model still has numerous embodiments, and all employing equivalents or equivalent transformation and all technical schemes of forming all drop within the protection domain of the utility model.
Claims (2)
1. the angle measurement unit of a wind power pitch-controlled system; Comprise a wheel hub; Said wheel hub comprises the wheel hub ring gear, is provided with the A scrambler in the said wheel hub, and said A scrambler is connected with master control; It is characterized in that: also be provided with a proximity Hall switch in the said wheel hub, the inner toothed surface that one of said proximity Hall switch is rectified said wheel hub ring gear; The other end of said proximity Hall switch is connected with said master control.
2. the angle measurement unit of wind power pitch-controlled system according to claim 1, it is characterized in that: said A scrambler is the angle absolute value encoder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204020542U CN202255349U (en) | 2011-10-20 | 2011-10-20 | Angle measuring device of wind power pitch system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204020542U CN202255349U (en) | 2011-10-20 | 2011-10-20 | Angle measuring device of wind power pitch system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202255349U true CN202255349U (en) | 2012-05-30 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204020542U Expired - Lifetime CN202255349U (en) | 2011-10-20 | 2011-10-20 | Angle measuring device of wind power pitch system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202255349U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103061973A (en) * | 2011-10-20 | 2013-04-24 | 苏州能健电气有限公司 | Angular measurement device of variable pitch system of wind generating set |
-
2011
- 2011-10-20 CN CN2011204020542U patent/CN202255349U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103061973A (en) * | 2011-10-20 | 2013-04-24 | 苏州能健电气有限公司 | Angular measurement device of variable pitch system of wind generating set |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120530 |
|
| DD01 | Delivery of document by public notice | ||
| DD01 | Delivery of document by public notice |
Addressee: Qian Xiaoli Document name: Notice of expiration and termination of patent right |