CN112034341B - Working condition identification method and device of variable-frequency smoke machine - Google Patents
Working condition identification method and device of variable-frequency smoke machine Download PDFInfo
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- CN112034341B CN112034341B CN202010786009.5A CN202010786009A CN112034341B CN 112034341 B CN112034341 B CN 112034341B CN 202010786009 A CN202010786009 A CN 202010786009A CN 112034341 B CN112034341 B CN 112034341B
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- 239000000779 smoke Substances 0.000 title claims abstract description 121
- 238000000034 method Methods 0.000 title claims abstract description 70
- 238000001514 detection method Methods 0.000 claims description 9
- 238000012163 sequencing technique Methods 0.000 claims description 3
- 239000004071 soot Substances 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000000391 smoking effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/34—Testing dynamo-electric machines
- G01R31/343—Testing dynamo-electric machines in operation
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M99/00—Subject matter not provided for in other groups of this subclass
- G01M99/004—Testing the effects of speed or acceleration
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M99/00—Subject matter not provided for in other groups of this subclass
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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Abstract
The application belongs to the technical field of range hoods, and particularly relates to a working condition identification method and device of a variable-frequency range hood. The working condition identification method comprises the steps of matching corresponding working condition information for each of N working conditions of the motor, wherein the working condition information comprises target current I N mesh And a target rotation speed V N mesh The method comprises the steps of carrying out a first treatment on the surface of the Starting the variable-frequency smoke machine, and detecting the current first actual rotating speed V of the motor x The method comprises the steps of carrying out a first treatment on the surface of the The current first actual rotation speed V x With the calibration rotation speed V under each working condition obtained by the previous oil smoke adhesion calibration N calibration Comparing to obtain N differential rotation speeds DeltaV N The method comprises the steps of carrying out a first treatment on the surface of the If a certain differential rotation speed DeltaV N Within a tolerance range, the motor is at the differential rotation speed DeltaV N And under the corresponding working conditions, operating according to the working condition information in the working conditions. The working condition identification method and device can effectively solve the problem that the working condition identification of the existing variable-frequency smoke machine is inaccurate.
Description
Technical Field
The application belongs to the technical field of range hoods, and particularly relates to a working condition identification method and device of a variable-frequency range hood.
Background
The variable frequency smoke machine on the market at present adopts the mode control of constant torque, does not discern the variable frequency smoke machine operating mode and carries out the pertinence processing, thereby lead to performance experience inflexible, fail to exert the motor performance of variable frequency smoke machine completely.
The partial smoke machine mainly improves user experience and performance parameters in reasonable aspects from the aspects of maximum air quantity, maximum static pressure and practical smoking effect, but the working condition identification is inaccurate, and the processing capacity is limited.
Disclosure of Invention
The application provides a working condition identification method of a variable frequency smoke machine, which aims to solve the problem that the working condition identification of the existing variable frequency smoke machine is inaccurate.
The application also provides a working condition recognition device adopting the working condition recognition method.
In order to achieve the above purpose, the present application adopts the following scheme:
a working condition identification method of a variable frequency smoke machine comprises the following steps:
matching corresponding working condition information for each of N working conditions of the motor, wherein the working condition information comprises target current I N mesh And a target rotation speed V N mesh ；
Starting the variable-frequency smoke machine, and detecting the current first actual rotating speed V of the motor x ；
The current first actual rotation speed V x With the calibration rotation speed V under each working condition obtained by the previous oil smoke adhesion calibration N calibration Comparing to obtain N differential rotation speeds DeltaV N The method comprises the steps of carrying out a first treatment on the surface of the If a certain differential rotation speed DeltaV N Within a tolerance range, the motor is at the differential rotation speed DeltaV N And under the corresponding working conditions, operating according to the working condition information in the working conditions.
The working condition identification method of the variable frequency smoke machine is further improved, and the method further comprises the following steps:
when the variable frequency smoke machine leaves the factory, carrying out factory calibration on the variable frequency smoke machine to obtain factory calibration rotating speed V under each working condition N out 。
The application further improves the working condition identification method of the variable frequency smoke machine, which is characterized in that the oil smoke adhesion calibration comprises the following steps:
target current I of motor under working condition N mesh Running, obtaining a second actual rotating speed V of the motor y According to the second actual rotation speed V y And factory calibration rotation speed V of variable-frequency smoke machine under working condition N out Obtaining an oil smoke adhesion coefficient Q;
according to the oil smoke adhesion coefficient Q, obtaining the calibration rotating speed V under each working condition N calibration 。
A further improvement of the working condition recognition method of the variable frequency smoke machine of the application is that the method is based on the second actual rotating speed V y And delivery of variable frequency smoke machine under working conditionCalibrating the rotation speed V N out The oil smoke adhesion coefficient Q is obtained, and specifically:
the oil smoke adhesion coefficient Q is the second actual rotation speed V y With the factory calibration rotation speed V under the working condition N out Is a ratio of (2).
The working condition identification method of the variable frequency smoke machine is further improved in that the calibration rotating speed V under each working condition is obtained according to the oil smoke adhesion coefficient Q N calibration The method specifically comprises the following steps:
calibration speed V under each working condition N calibration For the oil smoke adhesion coefficient Q and the factory calibration rotating speed V under the corresponding working condition N out Is a product of (a) and (b).
The working condition identification method of the variable frequency smoke machine is further improved, and the specific steps of factory calibration of the variable frequency smoke machine comprise the following steps:
target current I of motor under certain working condition N mesh Running to obtain the third actual rotation speed V of the motor z According to the third actual rotation speed V z And a target rotational speed V under such conditions N mesh Determining a factory difference coefficient K;
the factory calibration rotating speed V under each working condition is obtained through the factory difference coefficient K N out 。
A further improvement of the working condition recognition method of the variable frequency smoke machine of the application is that the method is based on the third actual rotating speed V z And a target rotational speed V under such conditions N mesh The factory difference coefficient K is determined, specifically:
the factory difference coefficient K is the third actual rotation speed V z With a target rotational speed V under such conditions N mesh Is a ratio of (2).
The working condition identification method of the variable frequency smoke machine is further improved in that the factory calibration rotating speed V under each working condition is obtained through the factory difference coefficient K N out The method specifically comprises the following steps:
factory calibration rotation speed V under each working condition N out Is the factory difference coefficient K and the target rotating speed V under the corresponding working condition N mesh Is a product of (a) and (b).
The working condition identification method of the variable frequency smoke machine is further improved in that the differential rotation speed DeltaV N For the first actual rotation speed V x With the calibration rotation speed V under each working condition obtained by the previous oil smoke adhesion calibration N calibration Is the absolute value of the difference of (c).
The working condition identification method of the variable frequency smoke machine is further improved in that the tolerance range is 100 rpm-200 rpm.
The working condition identification method of the variable frequency smoke machine is further improved, and the method further comprises the following steps: target current I of N working conditions N mesh And (5) sequencing.
The application also provides a working condition identification device of the variable-frequency smoke machine, which comprises a control unit, a current output unit and a rotating speed detection unit;
the current output unit is electrically connected with the control unit and is used for inputting target current I under a certain working condition to the motor N mesh ；
The rotating speed detection unit is electrically connected with the control unit and is used for detecting the current first actual rotating speed V of the motor x ；
The control unit is used for matching corresponding working condition information for each working condition of N working conditions of the motor, and the working condition information comprises a target current I N mesh And a target rotation speed V N mesh ；
The control device is used for controlling the starting or closing of the variable-frequency smoke machine;
and is also used for setting the current first actual rotation speed V x With the calibration rotation speed V under each working condition obtained by the previous oil smoke adhesion calibration N calibration Comparing to obtain N differential rotation speeds DeltaV N The method comprises the steps of carrying out a first treatment on the surface of the If a certain differential rotation speed DeltaV N Within a tolerance range, the motor is at the differential rotation speed DeltaV N And under the corresponding working conditions, operating according to the working condition information in the working conditions.
Compared with the prior art, the application has the beneficial effects that by adopting the scheme, the application has the following advantages:
in the present application, first, a corresponding condition signal is matched for each of N conditions of the motorExtinguishing; secondly, detecting the current first actual rotation speed V of the motor x The method comprises the steps of carrying out a first treatment on the surface of the Finally, the first actual rotation speed V 1 With the calibration rotation speed V under each working condition obtained by the previous oil smoke adhesion calibration N calibration By contrast, a certain differential rotation speed DeltaV is judged at the same time N Whether the working condition of the motor is in the tolerance range is judged, so that the problem of large deviation in the working condition identification process caused by the adhesion of oil smoke is effectively avoided, the accuracy of the working condition identification is further improved, and the problem that the working condition identification of the conventional variable-frequency smoke machine is inaccurate is effectively solved.
In addition, the working condition recognition device of the variable frequency smoke machine adopts the working condition recognition method, so that the problem that the working condition recognition of the conventional variable frequency smoke machine is not accurate enough can be at least effectively solved.
Drawings
Fig. 1 is a flowchart of a method for identifying working conditions of a variable frequency smoke machine provided in embodiment 1 of the present application;
fig. 2 is another flowchart of a method for identifying working conditions of a variable frequency smoke machine according to embodiment 1 of the present application;
fig. 3 is a schematic diagram of a system block diagram of a working condition recognition device of a variable frequency smoke machine provided in embodiment 2 of the present application;
in the figure: 1. a control unit; 2. a current output unit; 3. and a rotation speed detection unit.
Detailed Description
In order that the above-recited objects, features and advantages of the present application will be more readily understood, a more particular description of the application will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings. It should be noted that, without conflict, the embodiments of the present application and features in the embodiments may be combined with each other.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application, however, the present application may be practiced in other ways than those described herein, and therefore the scope of the present application is not limited to the specific embodiments disclosed below.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The meaning of "a plurality of" is two or more, unless specifically defined otherwise.
In the present application, unless explicitly specified and limited otherwise, the terms "connected," "secured," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.
Example 1
The embodiment provides a working condition identification method of a variable frequency smoke machine, as shown in fig. 1 and 2, comprising the following steps:
s1, matching corresponding working condition information for each of N working conditions of the motor, wherein the working condition information comprises target current I N mesh And a target rotation speed V N mesh ；
Wherein N is a positive integer greater than or equal to 0, and the target current I N mesh Representing a target current under the Nth working condition; target rotation speed V N mesh Representing the target rotational speed under the nth operating condition.
For example, in this embodiment, the motor has 16 working conditions, which are respectively 0 working condition, 1 working condition, and 2 working condition 15.
Preferably, the target current I under N working conditions N mesh Sequencing, e.g. target currents I under N conditions N mesh Arranging from small to large to obtain I 0 mesh 、I 1 mesh of 、I 2 meshes of 、·····I N mesh 。
The target current I under N working conditions can also be calculated N mesh Arranged in order from big to small to obtain I N mesh ·····I 1 mesh of 、I 0 mesh 。
S2, when the variable frequency smoke machine leaves factoryFactory calibration is carried out on the variable-frequency smoke machine to obtain factory calibration rotating speed V under each working condition N out ；
Factory calibration is carried out on the variable-frequency smoke machine to obtain factory calibration rotating speed V under each working condition N out The method specifically comprises the following steps:
s21, target current I of motor under a certain working condition N mesh Running to obtain the third actual rotation speed V of the motor z According to the third actual rotation speed V z And a target rotational speed V under such conditions N mesh Determining a factory difference coefficient K;
wherein the factory difference coefficient K is the third actual rotation speed V z With a target rotational speed V under such conditions N mesh Ratio of (1), i.e. k=v z Target rotational speed V under such conditions N mesh ；
S22, obtaining a factory calibration rotating speed V under each working condition through a factory difference coefficient K N out ；
Wherein, the factory calibration rotating speed V under each working condition N out Is the factory difference coefficient K and the target rotating speed V under the corresponding working condition N mesh Is a product of (a) and (b).
For example: when the variable-frequency smoke machine is subjected to factory calibration, the motor uses the target current I under 0 working condition 0 mesh Running to obtain the third actual rotation speed V of the motor z The method comprises the steps of carrying out a first treatment on the surface of the The factory difference coefficient K is: k=v z /V 0 mesh ；
Factory calibration rotation speed V under corresponding N working conditions N out The method comprises the following steps of: KXV 0 mesh 、K×V 1 mesh of 、K×V 2 meshes of 、K×V 3 mesh of 、K×V 4 meshes of ······K×V N mesh 。
For another example, when the variable frequency smoke machine is subjected to the factory calibration, the motor is driven by the target current I under the 3 working conditions 3 mesh of Running to obtain the third actual rotation speed V of the motor z The method comprises the steps of carrying out a first treatment on the surface of the The factory difference coefficient K is: k=v z /V 3 mesh of ；
Factory calibration rotation speed V under corresponding N working conditions N out The method comprises the following steps of: KXV 0 mesh 、K×V 1 mesh of 、K×V 2 meshes of 、K×V 3 mesh of 、K×V 4 meshes of ······K×V N mesh 。
S3, starting the variable-frequency smoke machine, and detecting the first actual rotation speed V of the motor x ；
S4, setting the first actual rotation speed V x With the calibration rotation speed V under each working condition obtained by the previous oil smoke adhesion calibration N calibration Comparing to obtain N differential rotation speeds DeltaV N The method comprises the steps of carrying out a first treatment on the surface of the If a certain differential rotation speed DeltaV N Within a tolerance range, the motor is at the differential rotation speed DeltaV N And under the corresponding working conditions, operating according to the working condition information in the working conditions.
Further, the calibration rotation speed V under each working condition N calibration The method comprises the following steps:
target current I of motor under working condition N mesh Running, obtaining a second actual rotating speed V of the motor y According to the second actual rotation speed V y And factory calibration rotation speed V of variable-frequency smoke machine under working condition N out Obtaining an oil smoke adhesion coefficient Q;
according to the oil smoke adhesion coefficient Q, obtaining the calibration rotating speed V under each working condition N calibration 。
Wherein the oil smoke adhesion coefficient Q is the second actual rotation speed V y With the factory calibration rotation speed V under the working condition N out Ratio of (i.e. q=v) y Factory calibration speed V under such working conditions N out ；
Calibration speed V under each working condition N calibration For the oil smoke adhesion coefficient Q and the factory calibration rotating speed V under the corresponding working condition N out Is a product of (a) and (b).
For example, when the variable frequency smoke machine is in operation, the variable frequency smoke machine is identified to be in the 8 th working condition, and the second actual rotating speed V of the motor is obtained at the moment y Then the soot attachment coefficient q=v y /V 8 go out By V after factory calibration 8 go out ＝K×V 8 meshes of So q=v y /(K×V 8 meshes of )。
Calibration rotation speed V under N corresponding working conditions N calibration The method comprises the following steps of: Q×V 0 out 、Q×V 1 out 、Q×V 0 out 、Q×V 0 out 、Q×V 0 out 、Q×V 0 out ·····Q×V N out Combining the factory calibration rotating speed V under each working condition obtained after factory calibration N out It can be seen that the calibration rotational speed V under N conditions N calibration The method comprises the following steps of: q× (KXV) 0 mesh )、Q×(K×V 1 mesh of )、Q×(K×V 2 meshes of )、Q×(K×V 3 mesh of )、Q×(K×V 4 meshes of )、Q×(K×V 5 meshes of )·····Q×(K×V N mesh )。
Furthermore, the method further comprises the step of updating the oil smoke adhesion coefficient Q each time the variable-frequency smoke machine is used for sucking oil smoke, so that the accuracy of identifying the working conditions is further improved. Specifically, the obtained oil smoke adhesion coefficient Q is stored to cover the oil smoke adhesion coefficient Q stored last time, so that the oil smoke adhesion coefficient adopted is a new oil smoke adhesion coefficient when oil smoke adhesion calibration is carried out each time.
Further, the differential rotational speed DeltaV N For the first actual rotation speed V x With the calibration rotation speed V under each working condition obtained by the previous oil smoke adhesion calibration N calibration Absolute value of difference of (a), i.e. DeltaV N ＝|V x -V N calibration |。
Further, the tolerance range is 100rpm to 200rpm.
For example, the differential rotational speed DeltaV under the 8 th working condition 8 For the first actual rotation speed V x With the calibrated rotation speed V under the 8 th working condition N calibration Absolute value of difference of (a), i.e. DeltaV 8 ＝|V x -V 8 calibration |；
If DeltaV 8 Within the range of 100rpm to 200rpm, i.e., 100 rpm.ltoreq.DeltaV 8 The speed is less than or equal to 200rpm, and then the motor is under the 8 th working condition; otherwise, judging the differential rotation speed DeltaV under other working conditions N Whether the motor is in the range of 100 rpm-200 rpm or not until the working condition of the motor is determined.
In this embodiment, first, corresponding working condition information is matched for each of N working conditions of the motor; secondly, carrying out factory calibration on the variable-frequency smoke machine to obtain the variable-frequency smoke machine under each working conditionIs a factory calibration rotational speed V N out The method comprises the steps of carrying out a first treatment on the surface of the Again, the first actual rotational speed V of the motor is detected x The method comprises the steps of carrying out a first treatment on the surface of the Finally, the first actual rotation speed V 1 With the calibration rotation speed V under each working condition obtained by the previous oil smoke adhesion calibration N calibration Comparing to obtain N differential rotation speeds DeltaV N The method comprises the steps of carrying out a first treatment on the surface of the If a certain differential rotation speed DeltaV N Within a tolerance range, the motor is at the differential rotation speed DeltaV N And under the corresponding working conditions, operating according to the working condition information in the working conditions.
Because the variable frequency smoke machine is factory calibrated on factory leaving of the smoke machine in the embodiment, the problem that large deviation occurs in the working condition identification process due to individual difference of the variable frequency smoke machine is effectively avoided, and the accuracy of the working condition identification is improved; also because in the present embodiment the first actual rotational speed V of the motor is x Obtaining the calibrated rotation speed V under each working condition by the previous oil smoke adhesion calibration N calibration By contrast, a certain differential rotation speed DeltaV is judged at the same time N Whether the working condition of the motor is in the tolerance range is judged, so that the problem that large deviation occurs in the working condition identification process due to the adhesion of oil smoke is effectively avoided, the accuracy of the working condition identification is further improved, and the problem that the working condition identification of the existing frequency conversion smoke machine is inaccurate is effectively solved.
Example 2
The embodiment provides a working condition identification device of a variable-frequency smoke machine, which is shown in fig. 3 and comprises a control unit 1, a current output unit 2 and a rotating speed detection unit 3;
the current output unit 2 is electrically connected with the control unit 1 and is used for inputting a target current I under a certain working condition to the motor N mesh ；
The rotation speed detection unit 3 is electrically connected with the control unit 1 and is used for detecting the current first actual rotation speed V of the motor x ；
The control unit 1 is configured to match corresponding condition information for each of N conditions of the motor, where the condition information includes a target current I N mesh And a target rotation speed V N mesh ；
The control device is also used for controlling the starting or closing of the variable-frequency smoke machine;
and is also used for setting the current first actual rotation speed V x With the calibration rotation speed V under each working condition obtained by the previous oil smoke adhesion calibration N calibration Comparing to obtain N differential rotation speeds DeltaV N The method comprises the steps of carrying out a first treatment on the surface of the If a certain differential rotation speed DeltaV N Within a tolerance range, the motor is at the differential rotation speed DeltaV N And under the corresponding working conditions, operating according to the working condition information in the working conditions.
Preferably, the control unit 1 may be a micro control unit, such as a single chip microcomputer; the rotation speed detection unit 3 may be a speed sensor; the current output unit 2 may be a current output control chip such as INA220AIDGSR or the like.
The working condition recognition method of embodiment 1 is specifically described with reference to the working condition recognition device of this embodiment, as shown in fig. 2:
s1, the control unit 1 matches corresponding working condition information for each working condition of N (for example, 16) working conditions of the motor, wherein the working condition information comprises target current I N mesh And a target rotation speed V N mesh ；
Target current I of N working conditions N mesh The I is obtained by arranging from small to large 0 mesh ，I 1 mesh of ，I 2 meshes of ······I 15 meshes of 。
S21, the control unit 1 controls the current output unit 2 to supply the target current I to the motor under the working condition of 0 0 mesh Target current I of motor under 0 working condition 0 mesh Operating; the rotation speed detecting unit 3 obtains a third actual rotation speed V of the motor z The control unit 1 calculates a factory difference coefficient k=v z /V 0 mesh Obtaining a factory difference coefficient K.
S22, the control unit 1 calibrates the rotating speed V according to the factory under each working condition N out Is the factory difference coefficient K and the target rotating speed V under the corresponding working condition N mesh To obtain the factory calibration rotating speed V N out For example, the factory calibration rotation speed V corresponding to N working conditions N out The method comprises the following steps of: KXV 0 mesh 、K×V 1 mesh of 、K×V 2 meshes of 、K×V 3 mesh of 、K×V 4 meshes of ······K×V 15 meshes of 。
S3, the control unit 1 controls the variable-frequency smoke machine to start, and the rotating speed detection unit 3 detects the first actual rotating speed V of the motor x 。
The control unit 1 obtains the calibration rotation speed V under each working condition obtained by the previous oil smoke adhesion calibration N calibration ；
The calibration speed V in each previous condition N calibration The method comprises the following steps:
when the previous frequency conversion smoke machine is in operation, the control unit 1 recognizes that the motor is under the working condition 8, and at the moment, the control unit 1 controls the current output unit 2 to maintain the input I to the electricity 8 meshes of While the rotation speed detecting unit 3 detects that the motor is operating at I 8 meshes of Second actual rotational speed V during current operation of (2) y ；
The control unit 1 takes the oil smoke adhesion coefficient Q as the second actual rotating speed V y With the factory calibration rotation speed V under the working condition N out The ratio of the oil smoke adhesion coefficient Q=V is obtained y /V 8 go out ＝V y /(K×V 8 meshes of )；
The control unit 1 then adjusts the rotation speed V according to the calibration rotation speed V under each working condition N calibration For the oil smoke adhesion coefficient Q and the factory calibration rotating speed V under the corresponding working condition N out The product of the two parameters is used for obtaining the calibrated rotating speed V under each working condition after the oil smoke adhesion calibration N calibration The method comprises the following steps of: q× (KXV) 0 mesh )、Q×(K×V 1 mesh of )、Q×(K×V 2 meshes of )、Q×(K×V 3 mesh of )、Q×(K×V 4 meshes of )、Q×(K×V 5 meshes of )·····Q×(K×V 15 meshes of )；
In the next operation of the variable-frequency smoke machine, the calibration rotating speed V of the variable-frequency smoke machine under each working condition obtained by the previous oil smoke adhesion calibration is called N calibration As the object of this comparison.
S4, the first actual rotating speed V of the variable-frequency smoke machine is changed x With the calibration rotation speed V under each working condition obtained by the previous oil smoke adhesion calibration N calibration Comparing to obtain N differential rotation speeds DeltaV N The method comprises the steps of carrying out a first treatment on the surface of the If a certain differenceDifferent rotation speed DeltaV N Within a tolerance range, the motor is at the differential rotation speed DeltaV N And under the corresponding working conditions, operating according to the working condition information in the working conditions.
In the description of the present specification, the terms "one embodiment," "some embodiments," "particular embodiments," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the described parent features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.
The present application is not limited to the above-mentioned embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the technical scope of the present application are intended to be included in the scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.
Claims (10)
1. The working condition identification method of the variable-frequency smoke machine is characterized by comprising the following steps of:
when the variable frequency smoke machine leaves the factory, carrying out factory calibration on the variable frequency smoke machine to obtain factory calibration rotating speed V under each working condition N out ；
Matching corresponding working condition information for each of N working conditions of the motor, wherein the working condition information comprises target current I N mesh And a target rotation speed V N mesh ；
Starting the variable-frequency smoke machine, and detecting the current first actual rotating speed V of the motor x ；
The current first actual rotation speed V x With the calibration rotation speed V under each working condition obtained by the previous oil smoke adhesion calibration N calibration Comparing to obtain N differential rotation speeds DeltaV N The method comprises the steps of carrying out a first treatment on the surface of the If a certain differential rotation speed DeltaV N Within a tolerance range, the motor is in the differential rotationSpeed DeltaV N Operating under the corresponding working conditions and according to the working condition information in the working conditions;
the soot attachment calibration comprises the following steps:
target current I of motor under working condition N mesh Running, obtaining a second actual rotating speed V of the motor y According to the second actual rotation speed V y And factory calibration rotation speed V of variable-frequency smoke machine under working condition N out Obtaining an oil smoke adhesion coefficient Q;
according to the oil smoke adhesion coefficient Q, obtaining the calibration rotating speed V under each working condition N calibration 。
2. The method for identifying the working condition of the variable frequency smoke machine according to claim 1, wherein the second actual rotation speed V y And factory calibration rotation speed V of variable-frequency smoke machine under working condition N out The oil smoke adhesion coefficient Q is obtained, and specifically:
the oil smoke adhesion coefficient Q is the second actual rotation speed V y With the factory calibration rotation speed V under the working condition N out Is a ratio of (2).
3. The method for recognizing the working condition of a variable-frequency range hood according to claim 1, wherein the calibration rotation speed V under each working condition is obtained according to the oil smoke adhesion coefficient Q N calibration The method specifically comprises the following steps:
calibration speed V under each working condition N calibration For the oil smoke adhesion coefficient Q and the factory calibration rotating speed V under the corresponding working condition N out Is a product of (a) and (b).
4. The method for identifying the working condition of the variable frequency smoke machine according to claim 1, wherein the specific step of factory calibration of the variable frequency smoke machine comprises the following steps:
target current I of motor under certain working condition N mesh Running to obtain the third actual rotation speed V of the motor z According to the third actual rotation speed V z And a target rotational speed V under such conditions N mesh Determining a factory difference coefficient K;
the factory calibration rotating speed V under each working condition is obtained through the factory difference coefficient K N out 。
5. The method for recognizing the working condition of the variable-frequency smoke machine according to claim 4, wherein the third actual rotation speed V z And a target rotational speed V under such conditions N mesh The factory difference coefficient K is determined, specifically:
the factory difference coefficient K is the third actual rotation speed V z With a target rotational speed V under such conditions N mesh Is a ratio of (2).
6. The method for identifying the working condition of a variable frequency smoke machine according to claim 4, wherein the factory calibration rotation speed V under each working condition is obtained through a factory difference coefficient K N out The method specifically comprises the following steps:
factory calibration rotation speed V under each working condition N out Is the factory difference coefficient K and the target rotating speed V under the corresponding working condition N mesh Is a product of (a) and (b).
7. The method for identifying the working conditions of the variable frequency smoke machine according to any one of claims 1 to 6, wherein the differential rotation speed Δv N For the first actual rotation speed V x With the calibration rotation speed V under each working condition obtained by the previous oil smoke adhesion calibration N calibration Is the absolute value of the difference of (c).
8. The method for identifying the working conditions of the variable frequency smoke machine according to any one of claims 1 to 6, wherein the tolerance range is 100rpm to 200rpm.
9. The method for identifying the working condition of the variable frequency smoke machine according to any one of claims 1 to 6, further comprising: target current I of N working conditions N mesh And (5) sequencing.
10. The working condition recognition device of the variable-frequency smoke machine is characterized by comprising a control unit (1), a current output unit (2) and a rotating speed detection unit (3);
the current output unit (2) is electrically connected with the control unit (1) and is used for inputting target current I under a certain working condition to the motor N mesh ；
The rotating speed detection unit (3) is electrically connected with the control unit (1) and is used for detecting the current first actual rotating speed V of the motor x ；
A control unit (1) for matching corresponding condition information for each of N conditions of the motor, the condition information comprising a target current I N mesh And a target rotation speed V N mesh ；
The control device is used for controlling the starting or closing of the variable-frequency smoke machine;
and is also used for setting the current first actual rotation speed V x With the calibration rotation speed V under each working condition obtained by the previous oil smoke adhesion calibration N calibration Comparing to obtain N differential rotation speeds DeltaV N The method comprises the steps of carrying out a first treatment on the surface of the If a certain differential rotation speed DeltaV N Within a tolerance range, the motor is at the differential rotation speed DeltaV N And under the corresponding working conditions, operating according to the working condition information in the working conditions.
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