CN109595128A - A kind of vane propeller-changing angle precision calibration equipment and method - Google Patents
A kind of vane propeller-changing angle precision calibration equipment and method Download PDFInfo
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- CN109595128A CN109595128A CN201811525481.2A CN201811525481A CN109595128A CN 109595128 A CN109595128 A CN 109595128A CN 201811525481 A CN201811525481 A CN 201811525481A CN 109595128 A CN109595128 A CN 109595128A
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- 230000006698 induction Effects 0.000 claims abstract description 37
- 238000009434 installation Methods 0.000 claims abstract description 19
- 230000001939 inductive effect Effects 0.000 claims description 39
- 238000012795 verification Methods 0.000 claims description 13
- 230000001960 triggered effect Effects 0.000 claims description 9
- 241000196324 Embryophyta Species 0.000 description 8
- 238000013459 approach Methods 0.000 description 3
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- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 238000010835 comparative analysis Methods 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D17/00—Monitoring or testing of wind motors, e.g. diagnostics
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D7/00—Controlling wind motors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2270/00—Control
- F05B2270/30—Control parameters, e.g. input parameters
- F05B2270/328—Blade pitch angle
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Abstract
The invention discloses a kind of vane propeller-changing angle precision calibration equipments, including variable pitch angle acquisition device, the variable pitch angle acquisition device includes variable pitch rotary transformer or variable pitch encoder, it further include the pitch control device being electrically connected with variable pitch angle acquisition device, further include the sensor block being mounted on blade bearing medial surface and be mounted on blade interior wheel hub lateral surface close to switch, close to the sensing direction of switch towards the direction of blade bearing motion profile side, and make during blade is by the first variable pitch extreme position variable pitch to the second variable pitch extreme position close to the installation site of switch, sensor block can be by the induction region close to switch, it is electrically connected close to switch with pitch control device.The invention also discloses the methods for using above-mentioned vane propeller-changing angle precision calibration equipment to be verified.It can be convenient using device and method disclosed by the invention and efficiently vane propeller-changing angle precision verified, compared with prior art, checking precision is higher.
Description
Technical field
The present invention relates to pitch control technical field more particularly to a kind of vane propeller-changing angle precision calibration equipment and sides
Method.
Background technique
As global non-renewable resources are largely exploited, sharply reduce.Wind energy can as a kind of clean and environmental protection
Regenerated resources are increasingly paid attention to by people, and the effective use of wind energy mainly applies to wind-power electricity generation.Wind-power electricity generation is exactly by wind
It can be converted into the process that mechanical energy is finally then converted to electric energy, and the most important component part of wind power generating set is exactly master control system
System and pitch-controlled system.Variable blade control system is related to entire wind power generating set reliability of operation, safety and stability.Become
Blade control system is to be rotated by blade along its longitudinal axis, changes air-flow to the angle of attack of blade, to change wind power generating set
The aerodynamic torque of acquisition makes generator power output keep stablizing.Therefore, the accuracy of blade angle is to pitch control system
System plays a crucial role.
In existing vane propeller-changing angle measurement technique, pitch motor internal encoder or rotary transformer are mainly used
It is measured as variable pitch angle acquisition device.However encoder or rotary transformer break down or damage during the work time
Bad, the blade angle angle value that pitch motor internal encoder or rotary transformer feed back to variable blade control system will appear the feelings of misalignment
Condition, to influence the operation of entire unit.Therefore, it is necessary to be verified to vane propeller-changing angle precision, existing method of calibration
Mainly include approach switch single-point trigger position verification and induction triggering starting to stop motion process verification, the former the shortcomings that
It is not necessarily to be in triggering center close to switch triggering aligned position, checking precision is low；The shortcomings that the latter, is that structure is multiple
It is miscellaneous, movement travel is relatively complicated.
Therefore, how a kind of method of calibration of convenient and efficient and high checking precision vane propeller-changing angle precision is provided, at
For those skilled in the art's urgent problem.
Summary of the invention
In view of the above shortcomings of the prior art, the technical problem to be solved by the present invention is how to simplify vane propeller-changing
The verification of angle precision and improve checking precision.
In order to solve the above technical problems, present invention employs the following technical solutions:
A kind of vane propeller-changing angle precision calibration equipment, including variable pitch angle acquisition device, the variable pitch angle acquisition device packet
Variable pitch rotary transformer or variable pitch encoder are included, further includes the pitch control device being electrically connected with variable pitch angle acquisition device, also wraps
Include the sensor block being mounted on blade bearing medial surface and be mounted on blade interior wheel hub lateral surface close to switch, close to opening
The sensing direction of pass makes towards the direction of blade bearing motion profile side, and close to the installation site of switch in blade
During the first variable pitch extreme position variable pitch to the second variable pitch extreme position, sensor block can be by the induction zone close to switch
Domain is electrically connected close to switch with pitch control device.
It preferably, include the first close switch and the second close switch, vane propeller-changing to first limit of distance close to switching
The position of the blade interior wheel hub lateral surface of sensor block direction is the first close switch when the position of pitch position predetermined angle
Installation site, the blade interior wheel of sensor block direction when vane propeller-changing to the position of distance second limit pitch position predetermined angle
The position of hub lateral surface is the installation site of the second close switch.
Preferably, predetermined angle is 3-10 degree.
Preferably, sensor block end is arranged at intervals with multiple induction parts, the distance of adjacent induction part along vane propeller-changing direction
Greater than the width close to inductive switching region, blade is by the first variable pitch extreme position variable pitch to the process of the second variable pitch extreme position
In, have and only all induction parts can be by the induction region close to switch.
A kind of vane propeller-changing angle precision method of calibration, the method are applied to above-mentioned vane propeller-changing angle precision and verify
Device includes the following steps:
Variable pitch angle acquisition when pitch control device acquires sensor block just triggering for the first time and just disengages close to inductive switching region
The vane propeller-changing angle value of device feedback, saves this value as initial fiducial value into pitch control device；
Variable pitch angle value and the equidirectional movement of sensor block when sensor block has just been triggered any region close to inductive switching for the first time
Variable pitch angle value when just having triggered the region close to inductive switching again is compared, or again with the movement of sensor block opposite direction
Secondary variable pitch angle value when just having disengaged the region close to inductive switching is compared, and calculates the first variable pitch angle error value；It will
Sensor block has just disengaged the variable pitch angle value close to inductive switching region for the first time and the equidirectional movement of sensor block is just de- again
It opens the variable pitch angle value close to inductive switching region to be compared, or just triggers institute again with the movement of sensor block opposite direction
Variable pitch angle value when stating close to inductive switching region is compared, and calculates the second variable pitch angle error value；
When the first variable pitch angle error value and/or the second variable pitch angle error value are greater than or equal to default error threshold, judgement
Variable pitch angle acquisition plant failure generates fault message.
It preferably, include the first close switch and the second close switch, vane propeller-changing to first limit of distance close to switching
The position of the blade interior wheel hub lateral surface of sensor block direction is the first close switch when the position of pitch position predetermined angle
Installation site, the blade interior wheel of sensor block direction when vane propeller-changing to the position of distance second limit pitch position predetermined angle
The position of hub lateral surface is the installation site of the second close switch.
Preferably, predetermined angle is 3-10 degree.
Preferably, sensor block end is arranged at intervals with multiple induction parts, the distance of adjacent induction part along vane propeller-changing direction
Greater than the width close to inductive switching region, blade is by the first variable pitch extreme position variable pitch to the process of the second variable pitch extreme position
In, have and only all induction parts can be by the induction region close to switch.
Preferably, further include following steps:
In checking procedure, if variable pitch rotary transformer or variable pitch encoder can not feed back vane propeller-changing angle value, variable pitch is judged
Angle acquisition plant failure generates fault message.
Preferably, before verification, vane propeller-changing to initial pitch position encodes variable pitch rotary transformer or variable pitch
The vane propeller-changing angle value of device is reset.
In conclusion the invention discloses a kind of vane propeller-changing angle precision calibration equipment, including variable pitch angle acquisition dress
It sets, it further includes filling with variable pitch angle acquisition that the variable pitch angle acquisition device, which includes variable pitch rotary transformer or variable pitch encoder,
The pitch control device for setting electrical connection further includes the sensor block being mounted on blade bearing medial surface and is mounted on blade interior wheel hub
On lateral surface close to switch, close to the sensing direction of switch towards the direction of blade bearing motion profile side, and connect
The installation site closely switched makes during blade is by the first variable pitch extreme position variable pitch to the second variable pitch extreme position, sense
Answer block that can be electrically connected close to switch with pitch control device by the induction region close to switch.On using
State the method that vane propeller-changing angle precision calibration equipment is verified.It can be convenient fastly using device and method disclosed by the invention
Prompt verifies vane propeller-changing angle precision, and compared with prior art, checking precision is higher.
Detailed description of the invention
In order to keep the purposes, technical schemes and advantages of invention clearer, the present invention is made into one below in conjunction with attached drawing
The detailed description of step, in which:
Fig. 1 is that sensor block has just been triggered close to inductive switching area in a kind of vane propeller-changing angle precision calibration equipment disclosed by the invention
The schematic diagram of domain moment；
Fig. 2 is that sensor block has just been disengaged close to inductive switching area in a kind of vane propeller-changing angle precision calibration equipment disclosed by the invention
The schematic diagram of domain moment；
Fig. 3 is the partial structural diagram of the sensor block with induction part of disclosure of the invention；
Description of symbols: sensor block 1, close switch 2, induction part 3, vane propeller-changing direction 4.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawing.
As shown in Figures 1 and 2, the invention discloses a kind of vane propeller-changing angle precision calibration equipments, including variable pitch angle
Acquisition device, the variable pitch angle acquisition device include variable pitch rotary transformer or variable pitch encoder, further include and variable pitch angle
The pitch control device of acquisition device electrical connection further includes the sensor block being mounted on blade bearing medial surface and is mounted in blade
On portion's wheel hub lateral surface close to switch, close to the sensing direction of switch towards the side of blade bearing motion profile side
To, and make the mistake in blade by the first variable pitch extreme position variable pitch to the second variable pitch extreme position close to the installation site of switch
Cheng Zhong, sensor block can be electrically connected close to switch with pitch control device by the induction region close to switch.
The working principle of vane propeller-changing angle precision calibration equipment disclosed by the invention is as follows:
Variable pitch angle acquisition when pitch control device acquires sensor block just triggering for the first time and just disengages close to inductive switching region
The vane propeller-changing angle value of device feedback, saves this value as initial fiducial value into pitch control device；
Variable pitch angle value and the equidirectional movement of sensor block when sensor block has just been triggered any region close to inductive switching for the first time
Variable pitch angle value when just having triggered the region close to inductive switching again is compared, or again with the movement of sensor block opposite direction
Secondary variable pitch angle value when just having disengaged the region close to inductive switching is compared, and calculates the first variable pitch angle error value；It will
Sensor block has just disengaged the variable pitch angle value close to inductive switching region for the first time and the equidirectional movement of sensor block is just de- again
It opens the variable pitch angle value close to inductive switching region to be compared, or just triggers institute again with the movement of sensor block opposite direction
Variable pitch angle value when stating close to inductive switching region is compared, and calculates the second variable pitch angle error value；
When the first variable pitch angle error value and/or the second variable pitch angle error value are greater than or equal to default error threshold, judgement
Variable pitch angle acquisition plant failure generates fault message.
, can be using the pitch control device with comparative analysis function in the present invention, or a processing is used alone again
Device is compared judgement by processor and generates fault message.With induction triggering starting in the prior art to the movement stopped
The method of process checking is compared, and calibration equipment structure disclosed by the invention is simple, and the process of method of calibration is also simple, to hardware
It is required that it is low, save the cost of verification.Compared with the method verified in the prior art close to switch single-point trigger position, due to sense
Answer block that there is one fixed width, therefore when close to inductive switching to sensor block, the variable pitch angle value of feedback is a value range, not
One exact value, which results in the checking precision of this method is lower.And in the present invention, it only acquires sensor block and just triggers close open
It closes induction range and just disengages the variable pitch angle value of the two moments of induction range, this can greatly improve checking precision, adopt
With calibration equipment disclosed by the invention and method, error range can be controlled in 0.01 degree.
When it is implemented, including the first close switch and the second close switch, vane propeller-changing to distance first close to switching
The position of the blade interior wheel hub lateral surface of sensor block direction approaches for first and opens when the position of limit pitch position predetermined angle
The installation site of pass, when vane propeller-changing to the position of distance second limit pitch position predetermined angle in the blade of sensor block direction
The position of portion's wheel hub lateral surface is the installation site of the second close switch.
In order to further increase checking precision, therefore two close switches can be set, it is every by a close switch, it adopts
The collection vane propeller-changing angle value that variable pitch angle acquisition device is fed back twice.Compared with only with a close switch, using multiple
Multilevel iudge can ensure that the stability of method of calibration to avoid because failing to judge caused by accidentalia.
When it is implemented, predetermined angle is 3-10 degree.
By the position of sensor block face when blade is arranged in will reach the limit of position close to the position of switch, it is in blade
It will be verified when reaching two limit positions, checking time and position dispersed, are conducive to further avoid leading because of accidentalia
What is caused fails to judge, and ensure that the stability of method of calibration.
As shown in figure 3, when it is implemented, sensor block end is arranged at intervals with multiple induction parts, phase along vane propeller-changing direction
The distance of adjacent induction part is greater than the width close to inductive switching region, and blade is by the first variable pitch extreme position variable pitch to the second variable pitch
During extreme position, has and only all induction parts can be by the induction region close to switch.
When using this structure, since sensor block has multiple induction parts, sensor block can be obtained by one close to switch
To one group of vane propeller-changing angle value, in this way, multiple multilevel iudge can be carried out in the case where not increasing close switch number,
It can be to avoid because failing to judge caused by accidentalia.
In addition, taking above structure, following steps can also be taken when being compared judgement:
The mean difference by a variable pitch angle error value close to switch is calculated, when the mean difference of variable pitch angle error value
When more than or equal to default error threshold, variable pitch angle acquisition plant failure is judged, generate fault message.
Alternatively, the difference of preset ratio is greater than or waits when in the variable pitch angle error value obtained by one close to switch
When default error threshold, variable pitch angle acquisition plant failure is judged, generate fault message.
Because calibration equipment disclosed by the invention and method be in order to carry out high-precision verification, preset error threshold
Value is often smaller, thinks to break down if any difference is greater than default error threshold, then in checking procedure, due to
Vibration caused by variable pitch is likely to result in erroneous judgement.According to the structure of multiple induction parts, can repeatedly it be compared, then using upper
The mode of stating judges whether failure, can improve the stability of verification to avoid because judging by accident caused by accidentalia.
The invention also discloses a kind of vane propeller-changing angle precision method of calibration, the method is applied to above-mentioned blade and becomes
Propeller angle precision checking device, includes the following steps:
Variable pitch angle acquisition when pitch control device acquires sensor block just triggering for the first time and just disengages close to inductive switching region
The vane propeller-changing angle value of device feedback, saves this value as initial fiducial value into pitch control device；
Variable pitch angle value and the equidirectional movement of sensor block when sensor block has just been triggered any region close to inductive switching for the first time
Variable pitch angle value when just having triggered the region close to inductive switching again is compared, or again with the movement of sensor block opposite direction
Secondary variable pitch angle value when just having disengaged the region close to inductive switching is compared, and calculates the first variable pitch angle error value；It will
Sensor block has just disengaged the variable pitch angle value close to inductive switching region for the first time and the equidirectional movement of sensor block is just de- again
It opens the variable pitch angle value close to inductive switching region to be compared, or just triggers institute again with the movement of sensor block opposite direction
Variable pitch angle value when stating close to inductive switching region is compared, and calculates the second variable pitch angle error value；
When the first variable pitch angle error value and/or the second variable pitch angle error value are greater than or equal to default error threshold, judgement
Variable pitch angle acquisition plant failure generates fault message.
When it is implemented, including the first close switch and the second close switch, vane propeller-changing to distance first close to switching
The position of the blade interior wheel hub lateral surface of sensor block direction approaches for first and opens when the position of limit pitch position predetermined angle
The installation site of pass, when vane propeller-changing to the position of distance second limit pitch position predetermined angle in the blade of sensor block direction
The position of portion's wheel hub lateral surface is the installation site of the second close switch.
When it is implemented, predetermined angle is 3-10 degree.
When it is implemented, sensor block end is arranged at intervals with multiple induction parts along vane propeller-changing direction, adjacent induction part
Distance is greater than the width close to inductive switching region, and blade is by the first variable pitch extreme position variable pitch to the second variable pitch extreme position
In the process, have and only all induction parts can be by the induction region close to switch.
When it is implemented, further including following steps:
In checking procedure, if variable pitch rotary transformer or variable pitch encoder can not feed back vane propeller-changing angle value, variable pitch is judged
Angle acquisition plant failure generates fault message.
When being verified, it can first judge whether variable pitch rotary transformer or variable pitch encoder can feed back vane propeller-changing
Angle value, if cannot, directly judge failure, without carrying out other processes, improves verification efficiency.
When it is implemented, by vane propeller-changing to initial pitch position (i.e. 0 degree of position), variable pitch is rotated before verification
The vane propeller-changing angle value of transformer or variable pitch encoder is reset.
Before verification, need to use aforesaid way by variable pitch rotary transformer or the vane propeller-changing of variable pitch encoder feedback
Angle value and actual vane propeller-changing angle value calibration, avoid blade itself before verification the case where variable pitch angle offset.
Below it is the example verified using calibration equipment disclosed by the invention:
Zero vane graduation mark is preset as 0 degree of position of blade, 0 graduation mark of wheel hub is aligned with zero vane graduation mark, in sharf
It honours and answers installation sensor block at 0 degree of position；Feather position is set as 89 degree of positions of blade；First variable pitch extreme position is set as leaf
Piece -2 is spent, and the second variable pitch extreme position is set as 92 degree of positions of blade；When vane propeller-changing to 3 degree of positions outside the wheel hub of sensor block face
Lateral location installation first is close to switch, and the wheel hub lateral surface position of sensor block face installs the when vane propeller-changing to 88 degree positions
Two close to switch, and 3 degree are nearby mounted at 3 degree of positions of variable pitch blade close to switch；88 degree are nearby mounted on variable pitch close to switch
At 88 degree of positions of blade；Default error threshold is set as 0 to 0.05 degree.
To advanced optimize technical solution of the present invention, two are separately mounted to 3 degree and 88 degree of positions close to switch, work as wind regime
When good, blade can near 3 degree of positions variable pitch back and forth, one is arranged close to switch 3 degree of positions, change can be frequently verified
Propeller angle precision is further ensured that the precision of variable pitch angle；During blower frequent start-stop, sensor block can frequently pass through 88 degree
Therefore another is arranged close to switch 88 degree of positions, also can frequently verify variable pitch angle precision, further protect by position
Demonstrate,prove the precision of variable pitch angle.
When starting verification, first by vane propeller-changing to first or second variable pitch extreme position, then pitch control device control is controlled
Blade variable pitch back and forth between the first variable pitch extreme position and the second variable pitch extreme position；Pitch control device continuous acquisition sensor block
By the vane propeller-changing angle value of the variable pitch angle acquisition device feedback close to inductive switching region；Pitch control device makees this value
For initial fiducial value, the blade hereafter disengaged each time by described close to just triggering corresponding to inductive switching region and just becomes
Vane angle angle value is compared with initial fiducial value, calculates variable pitch angle error value；When variable pitch angle error value is greater than or equal in advance
If when error threshold, judging variable pitch angle acquisition plant failure, fault message is generated.
Finally, it is stated that the above examples are only used to illustrate the technical scheme of the present invention and are not limiting, although passing through ginseng
According to the preferred embodiment of the present invention, invention has been described, it should be appreciated by those of ordinary skill in the art that can
To make various changes to it in the form and details, without departing from the present invention defined by the appended claims
Spirit and scope.
Claims (10)
1. a kind of vane propeller-changing angle precision calibration equipment, including variable pitch angle acquisition device, the variable pitch angle acquisition device
It further include the pitch control device being electrically connected with variable pitch angle acquisition device including variable pitch rotary transformer or variable pitch encoder,
It is characterized in that, further includes the sensor block being mounted on blade bearing medial surface and being mounted on connecing on blade interior wheel hub lateral surface
Nearly switch, close to the sensing direction of switch towards the direction of blade bearing motion profile side, and the installation of close switch
Position makes during blade is by the first variable pitch extreme position variable pitch to the second variable pitch extreme position, and sensor block can be by connecing
The induction region closely switched is electrically connected close to switch with pitch control device.
2. vane propeller-changing angle precision calibration equipment as described in claim 1, which is characterized in that connect close to switch including first
Nearly switch with second close to switch, sensor block direction when vane propeller-changing to the position of distance first limit pitch position predetermined angle
Blade interior wheel hub lateral surface position be first close to switch installation site, vane propeller-changing to distance second limit variable pitch
The position of the blade interior wheel hub lateral surface of sensor block direction is the installation of the second close switch when the position of position predetermined angle
Position.
3. vane propeller-changing angle precision calibration equipment as claimed in claim 2, which is characterized in that predetermined angle is 3-10 degree.
4. vane propeller-changing angle precision calibration equipment as described in any one of claims 1-3, which is characterized in that sensor block end
Multiple induction parts are arranged at intervals with along vane propeller-changing direction, the distance of adjacent induction part is greater than the width close to inductive switching region
Degree during blade is by the first variable pitch extreme position variable pitch to the second variable pitch extreme position, has and only all induction part meetings
By the induction region close to switch.
5. a kind of vane propeller-changing angle precision method of calibration, which is characterized in that the method is applied to leaf described in claim 1
Piece variable pitch angle precision calibration equipment, includes the following steps:
Variable pitch angle acquisition when pitch control device acquires sensor block just triggering for the first time and just disengages close to inductive switching region
The vane propeller-changing angle value of device feedback, saves this value as initial fiducial value into pitch control device；
Variable pitch angle value and the equidirectional movement of sensor block when sensor block has just been triggered any region close to inductive switching for the first time
Variable pitch angle value when just having triggered the region close to inductive switching again is compared, or again with the movement of sensor block opposite direction
Secondary variable pitch angle value when just having disengaged the region close to inductive switching is compared, and calculates the first variable pitch angle error value；It will
Sensor block has just disengaged the variable pitch angle value close to inductive switching region for the first time and the equidirectional movement of sensor block is just de- again
It opens the variable pitch angle value close to inductive switching region to be compared, or just triggers institute again with the movement of sensor block opposite direction
Variable pitch angle value when stating close to inductive switching region is compared, and calculates the second variable pitch angle error value；
When the first variable pitch angle error value and/or the second variable pitch angle error value are greater than or equal to default error threshold, judgement
Variable pitch angle acquisition plant failure generates fault message.
6. vane propeller-changing angle precision method of calibration as claimed in claim 5, which is characterized in that connect close to switch including first
Nearly switch with second close to switch, sensor block direction when vane propeller-changing to the position of distance first limit pitch position predetermined angle
Blade interior wheel hub lateral surface position be first close to switch installation site, vane propeller-changing to distance second limit variable pitch
The position of the blade interior wheel hub lateral surface of sensor block direction is the installation of the second close switch when the position of position predetermined angle
Position.
7. vane propeller-changing angle precision method of calibration as claimed in claim 6, which is characterized in that predetermined angle is 3-10 degree.
8. such as the described in any item vane propeller-changing angle precision methods of calibration of claim 5-7, which is characterized in that sensor block end
Multiple induction parts are arranged at intervals with along vane propeller-changing direction, the distance of adjacent induction part is greater than the width close to inductive switching region
Degree during blade is by the first variable pitch extreme position variable pitch to the second variable pitch extreme position, has and only all induction part meetings
By the induction region close to switch.
9. vane propeller-changing angle precision method of calibration as claimed in claim 5, which is characterized in that further include following steps:
In checking procedure, if variable pitch rotary transformer or variable pitch encoder can not feed back vane propeller-changing angle value, variable pitch is judged
Angle acquisition plant failure generates fault message.
10. vane propeller-changing angle precision method of calibration as claimed in claim 5, which is characterized in that before verification, by blade
Variable pitch resets the vane propeller-changing angle value of variable pitch rotary transformer or variable pitch encoder to initial pitch position.
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| CN201811525481.2A CN109595128B (en) | 2018-12-13 | 2018-12-13 | A kind of vane propeller-changing angle precision calibration equipment and method |
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| CN201811525481.2A CN109595128B (en) | 2018-12-13 | 2018-12-13 | A kind of vane propeller-changing angle precision calibration equipment and method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112253383A (en) * | 2020-10-22 | 2021-01-22 | 重庆华昭电气设备有限公司 | Method for preventing proximity switch from being triggered mistakenly for variable pitch control system |
| CN113623147A (en) * | 2021-09-16 | 2021-11-09 | 中国船舶重工集团海装风电股份有限公司 | Method for judging triggering fault of proximity switch of pitch system of wind turbine generator |
| EP4056844A1 (en) * | 2021-03-12 | 2022-09-14 | General Electric Renovables España S.L. | Pitch assembly for wind turbine and related method |
Citations (4)
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| CN112253383A (en) * | 2020-10-22 | 2021-01-22 | 重庆华昭电气设备有限公司 | Method for preventing proximity switch from being triggered mistakenly for variable pitch control system |
| EP4056844A1 (en) * | 2021-03-12 | 2022-09-14 | General Electric Renovables España S.L. | Pitch assembly for wind turbine and related method |
| US11939962B2 (en) | 2021-03-12 | 2024-03-26 | General Electric Renovables Espana, S.L. | Pitch assembly and related methods |
| CN113623147A (en) * | 2021-09-16 | 2021-11-09 | 中国船舶重工集团海装风电股份有限公司 | Method for judging triggering fault of proximity switch of pitch system of wind turbine generator |
| CN113623147B (en) * | 2021-09-16 | 2022-09-30 | 中国船舶重工集团海装风电股份有限公司 | Method for judging triggering fault of proximity switch of pitch system of wind turbine generator |
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