CN109812443A - The method and apparatus for controlling fan motor natural wind simulating - Google Patents
The method and apparatus for controlling fan motor natural wind simulating Download PDFInfo
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Abstract
The present invention provides a kind of method for controlling fan motor natural wind simulating, and in this method, acquisition time radix curve, calculation formula H=t%T, wherein H indicates that time radix, t indicate the time, and % indicates remainder, and T indicates the period；The cycle Cosine curve of noise of superposition is obtained, calculation formula is f (H)=cos (2 π/(T × ε1) × H)+1, wherein f (H) indicates the ordinate amount of the cycle Cosine curve of noise of superposition, and cos indicates that cosine calculates, ε1Indicate the first noise factor；The motor curve of output for being superimposed secondary noise is obtained, calculation formula is F (f (H))=f (H) × k+b × ε2, wherein F (f (H)) indicates the ordinate amount for being superimposed the motor curve of output of secondary noise, and k indicates that motor output duty cycle coefficient, b indicate motor output duty cycle offset, ε2Indicate the second noise factor；Fan motor is controlled according to the motor curve of output.
Description
Technical field
The present invention relates to electromechanical integration technology area, a kind of particularly side for controlling fan motor natural wind simulating
Method and device.
Background technique
The household electrical appliances such as fan, air-conditioning, fresh air can provide air flowing for the living space of people, it is often desirable to can
Obtain the random experience slightly to rise and fall of similar natural wind.
Have the product of natural wind on the market at present, most of is motor rotary speed of modification at regular intervals, or
Service life function carries out algorithm simulation.
Opposite natural wind product, user wish from body-sensing more multiterminal, exquisiteness, soft.
Summary of the invention
In view of this, the present invention provides a kind of method and apparatus of clear simple control fan motor natural wind simulating,
Help to improve user experience.
To achieve the above object, the present invention provides a kind of method for controlling fan motor natural wind simulating, comprising: when acquisition
Between radix curve, calculation formula H=t%T, wherein H indicate time radix, t indicate the time, % indicate remainder, T indicate week
Phase；The cycle Cosine curve of noise of superposition is obtained, calculation formula is f (H)=cos (2 π/(T × ε1) × H)+1, wherein f
(H) the ordinate amount of the cycle Cosine curve of noise of superposition is indicated, cos indicates that cosine calculates, ε1Indicate the first noise because
Son；The motor curve of output for being superimposed secondary noise is obtained, calculation formula is F (f (H))=f (H) × k+b × ε2, wherein F (f
(H)) the ordinate amount for being superimposed the motor curve of output of secondary noise is indicated, k indicates that motor output duty cycle coefficient, b indicate electricity
Machine output duty cycle offset, ε2Indicate the second noise factor；Fan motor is controlled according to the motor curve of output.
Optionally, further includes: the motor curve of output of the secondary noise of superposition is smoothed.
Optionally, the step-length of the smoothing processing is 2.
Optionally, the first noise factor meets condition: 0.55≤ε1≤1.45。
Optionally, the second noise factor meets condition: 0.75≤ε2≤1。
To achieve the above object, the present invention also provides a kind of devices for controlling fan motor natural wind simulating, comprising: first
Module is obtained, is used for acquisition time radix curve, calculation formula H=t%T, wherein H indicates time radix, when t is indicated
Between, % indicates remainder, and T indicates the period；Second obtains module, for obtaining the cycle Cosine curve of noise of superposition, calculates
Formula is f (H)=cos (2 π/(T × ε1) × H)+1, wherein f (H) indicates the vertical seat of the cycle Cosine curve of noise of superposition
Scalar, cos indicate that cosine calculates, ε1Indicate the first noise factor；Third obtains module, for obtaining the electricity for being superimposed secondary noise
Machine curve of output, calculation formula are F (f (H))=f (H) × k+b × ε2, wherein F (f (H)) indicates the motor for being superimposed secondary noise
The ordinate amount of curve of output, k indicate that motor output duty cycle coefficient, b indicate motor output duty cycle offset, ε2Indicate the
The two noise factors；Electromechanical Control module, for controlling fan motor according to the motor curve of output.
Optionally, further includes: smoothing module carries out flat for the motor curve of output to the secondary noise of superposition
Sliding processing.
Optionally, the step-length of the smoothing processing is 2.
Optionally, the first noise factor meets condition: 0.55≤ε1≤1.45。
Optionally, the second noise factor meets condition: 0.75≤ε2≤1。
In the method and apparatus of control fan motor natural wind simulating of the invention, the noise factor is successively introduced twice,
The random degree of curve is improved, natural fidelity is higher, while algorithm is simple, and code occupied space is smaller.
Detailed description of the invention
Attached drawing for a better understanding of the present invention, does not constitute an undue limitation on the present invention.Wherein:
Fig. 1 is the flow diagram of the method for the control fan motor natural wind simulating of the embodiment of the present invention；
Fig. 2 is the structural schematic diagram of the device of the control fan motor natural wind simulating of the embodiment of the present invention；
Fig. 3 is the time half period radix curve of the embodiment of the present invention；
Fig. 4 is the time complete cycle radix curve of the embodiment of the present invention；
Fig. 5 is the first time noise curve of the embodiment of the present invention；
Fig. 6 is the half period cosine curve of noise of superposition of the embodiment of the present invention；
Fig. 7 is cosine curve complete cycle of noise of superposition of the embodiment of the present invention；
Fig. 8 is second of noise curve of the embodiment of the present invention；
Fig. 9 is the fourth speed motor curve of output of the secondary noise of superposition of the embodiment of the present invention；.
Figure 10 be the secondary noise of superposition of the embodiment of the present invention fourth speed motor smoothly after curve of output.
Specific embodiment
Fig. 1 is the flow diagram of the method for the control fan motor natural wind simulating of the embodiment of the present invention.Such as Fig. 1 institute
Show, this method includes the following steps, namely A to step D.
Step A: acquisition time radix curve.Calculation formula is H=t%T, and wherein H indicates time radix, when t is indicated
Between, % indicates remainder, and T indicates the period.
It should be noted that the same device (such as fan) may possess multiple output gears, the time radix of each shelves
Curve can be identical, is also possible to that a part is time complete cycle radix curve, another part is time half period radix
Curve.Specifically it can not be repeated herein by the value of change cycle T come flexible design.
Step B: the cycle Cosine curve of noise of superposition is obtained.Calculation formula is f (H)=cos (2 π/(T × ε1)×
H)+1, wherein f (H) indicates the ordinate amount of the cycle Cosine curve of noise of superposition, and cos indicates that cosine calculates, ε1It indicates
The first noise factor, the noise factor are random noise, are realized on software by calling canonical function library.
It should be noted that above-mentioned calculation formula is compared with conventional cosine function cos (2 π/(T) × H), difference is
Introduce the first noise factor ε1, and numerical value adds 1.Wherein, by introducing the first noise factor ε1Improve the random journey of curve
Degree, is equivalent to cosine curve by numerical value plus 1 and integrally translates up, ensure that curve ordinate is always positive value.First noise
The factor can be extracted from noise curve and be obtained, and the noise factor is random noise, by calling canonical function library to carry out reality on software
It is existing.The first noise factor meets condition: 0.55≤ε1≤1.45。
Step C: the motor curve of output for being superimposed secondary noise is obtained.Calculation formula be F (f (H))=f (H) × k+b ×
ε2, wherein F (f (H)) indicates the ordinate amount for being superimposed the motor curve of output of secondary noise, and k indicates motor output duty cycle system
Number, b indicate motor output duty cycle offset, ε2It indicates that the second noise factor, the noise factor are random noise, passes through on software
Canonical function library is called to realize.
It should be understood that k is the coefficient that curve corresponds to motor output duty cycle, it can be interpreted as times magnification roughly
Number.B is the offset that curve corresponds to motor output duty cycle.The second noise factor can be extracted from noise curve and be obtained,
The second noise factor meets condition: 0.75≤ε2≤1。
Step D: fan motor is controlled according to motor curve of output.
From the foregoing, it will be observed that successively being introduced twice in the method for the control fan motor natural wind simulating of the embodiment of the present invention
The noise factor improves the random degree of curve, and natural fidelity is higher, while algorithm is simple, and code occupied space is smaller.
Optionally, before step D further include: be smoothed to the motor curve of output for being superimposed secondary noise.This
Sample can reduce frequent switching of the motor from high revolving speed to the slow-speed of revolution.Preferably, the step-length of smoothing processing is 2.
Fig. 2 is the structural schematic diagram of the device 20 of the control fan motor natural wind simulating of the embodiment of the present invention.Such as Fig. 2 institute
Show, which includes that the first acquisition module 21, second obtains module 22, third obtains module 23, Electromechanical Control module 24.
First, which obtains module 21, is used for acquisition time radix curve.Calculation formula is H=t%T, and wherein H indicates time base
Number, t indicate the time, and % indicates remainder, and T indicates the period.It should be noted that the same device (such as fan) may possess it is more
The time radix curve of a output gear, each shelves can be identical, be also possible to a part be time complete cycle radix curve,
Another part is time half period radix curve.Specifically it can not go to live in the household of one's in-laws on getting married herein by the value of change cycle T come flexible design
It states.
Second acquisition module 22 is used to obtain the cycle Cosine curve of noise of superposition.Calculation formula is f (H)=cos
(2π/(T×ε1) × H)+1, wherein f (H) indicate superposition noise cycle Cosine curve ordinate amount, cos expression more than
String calculates, ε1Indicate the first noise factor.It should be noted that above-mentioned calculation formula and conventional cosine function cos (2 π/(T)
× H) it compares, difference is to introduce the first noise factor ε1, and numerical value adds 1.Wherein, by introducing the first noise factor ε1
The random degree for improving curve, is equivalent to cosine curve by numerical value plus 1 and integrally translates up, and ensure that curve ordinate begins
It is eventually positive value.The first noise factor can be extracted from noise curve and be obtained, and the noise factor is random noise, pass through tune on software
It is realized with canonical function library.The first noise factor meets condition: 0.55≤ε1≤1.45。
Third obtains module 23 for obtaining the motor curve of output for being superimposed secondary noise.Calculation formula is F (f (H))=f
(H)×k+b×ε2, wherein F (f (H)) indicates the ordinate amount for being superimposed the motor curve of output of secondary noise, and k indicates that motor is defeated
Duty ratio coefficient out, b indicate motor output duty cycle offset, ε2Indicate the second noise factor.It should be understood that k is song
Line corresponds to the coefficient of motor output duty cycle (0%~100%), can be interpreted as amplification factor roughly.B corresponds to for curve
The offset of motor output duty cycle.The second noise factor can be extracted from noise curve and be obtained, and the noise factor is to make an uproar at random
Sound is realized by calling canonical function library on software.The second noise factor meets condition: 0.75≤ε2≤1。
Electromechanical Control module 24 is used to control fan motor according to motor curve of output.
From the foregoing, it will be observed that successively being introduced twice in the method for the control fan motor natural wind simulating of the embodiment of the present invention
The noise factor improves the random degree of curve, and natural fidelity is higher, while algorithm is simple, and code occupied space is smaller.
Optionally, controlling in the device of fan motor natural wind simulating further includes smoothing module.Smoothing module
For being smoothed to the motor curve of output for being superimposed secondary noise.Motor can be reduced in this way from high revolving speed to the slow-speed of revolution
Frequent switching.Preferably, the step-length of smoothing processing is 2.
To make those skilled in the art more fully understand technical solution of the present invention, being set forth below one has four gears defeated
The motor curve of output of fan out is illustrated.
(1) acquisition time radix curve
First grade that the fan is arranged and second gear change according to the half period, and cycle length is 45 seconds.The fan is set
The natural wind of third gear and fourth speed changes according to complete cycle, and cycle length is 90 seconds.Then:
H1=H2=t%45
H3=H4=t%90
The time radix curve of first grade and second gear as shown in figure 3, the time radix curve of third gear and fourth speed such as
Shown in Fig. 4.
(2) the cycle Cosine curve of noise of superposition is obtained
First time curve noise curve is provided, as shown in Figure 5.
For first grade and the cycle Cosine curve of a second gear calculating noise of superposition, calculation formula is f (H1)=cos
(π/(45×ε1)×H1)+1, f (H2)=cos (π/(45 × ε1)×H2)+1.Due to first grade and the time radix phase of second gear
With (i.e. H1=H2), therefore the cycle Cosine curve of noise of first grade of superposition corresponding with second gear is also identical, as shown in Figure 6.
The cycle Cosine curve of noise of superposition is calculated for third gear and fourth speed, calculation formula is f (H3)=cos
(π/(45×ε1)×H3)+1, f (H4)=cos (π/(45 × ε1)×H4)+1.Due to first grade and the time radix phase of second gear
With (i.e. H3=H4), therefore the cycle Cosine curve of third gear and a fourth speed noise of corresponding superposition is also identical, as shown in Figure 7.
(3) the motor curve of output for being superimposed secondary noise is obtained
Second of curve noise curve is provided, as shown in Figure 8.
Parameter k is provided1、k2、k3、k4And b1、b2、b3、b4.Such as the PWM duty cycle fluctuation range such as following figure of fourth speed, k4
=6.25, b4=23.
Calculate the ordinate F (f (H of the motor curve of output of the corresponding secondary noise of superposition of fourth speed4))=f (H4)×k4+
b4×ε2=6.25f (H4)+23ε2, curve is as shown in Figure 9.
(4) curve smoothing is handled
In order to reduce frequent switching of the motor from high revolving speed to the slow-speed of revolution, increase moving average filter, filtering step-length is 2.
fOutput=0.5 × fLast time output+0.5×fCalculate output.Smoothed out curve is as shown in Figure 10.
Above-mentioned specific embodiment, does not constitute a limitation on the scope of protection of the present invention.Those skilled in the art should be bright
It is white, design requirement and other factors are depended on, various modifications, combination, sub-portfolio and substitution can occur.It is any
Made modifications, equivalent substitutions and improvements etc. within the spirit and principles in the present invention, should be included in the scope of the present invention
Within.
Claims (10)
1. a kind of method for controlling fan motor natural wind simulating characterized by comprising
Acquisition time radix curve, calculation formula H=t%T, wherein H indicates that time radix, t indicate the time, and % expression takes
Remaining, T indicates the period；
The cycle Cosine curve of noise of superposition is obtained, calculation formula is f (H)=cos (2 π/(T × ε1) × H)+1, wherein f
(H) the ordinate amount of the cycle Cosine curve of noise of superposition is indicated, cos indicates that cosine calculates, ε1Indicate the first noise because
Son；
The motor curve of output for being superimposed secondary noise is obtained, calculation formula is F (f (H))=f (H) × k+b × ε2, wherein F (f
(H)) the ordinate amount for being superimposed the motor curve of output of secondary noise is indicated, k indicates that motor output duty cycle coefficient, b indicate electricity
Machine output duty cycle offset, ε2Indicate the second noise factor；
Fan motor is controlled according to the motor curve of output.
2. the method according to claim 1, wherein controlling fan motor according to the motor curve of output
Before step, further includes: be smoothed to the motor curve of output of the secondary noise of superposition.
3. according to the method described in claim 2, it is characterized in that, the step-length of the smoothing processing is 2.
4. the method according to claim 1, wherein the first noise factor meets condition: 0.55≤ε1≤
1.45。
5. the method according to claim 1, wherein the second noise factor meets condition: 0.75≤ε2≤1。
6. a kind of device for controlling fan motor natural wind simulating characterized by comprising
First obtains module, is used for acquisition time radix curve, calculation formula H=t%T, wherein H indicates time radix, t table
Show the time, % indicates remainder, and T indicates the period；
Second obtains module, and for obtaining the cycle Cosine curve of noise of superposition, calculation formula is f (H)=cos (2 π/(T
×ε1) × H)+1, wherein f (H) indicates the ordinate amount of the cycle Cosine curve of noise of superposition, and cos indicates that cosine calculates,
ε1Indicate the first noise factor；
Third obtains module, for obtaining the motor curve of output for being superimposed secondary noise, calculation formula for F (f (H))=f (H) ×
k+b×ε2, wherein F (f (H)) indicates the ordinate amount for being superimposed the motor curve of output of secondary noise, and k indicates that motor exports duty
Than coefficient, b indicates motor output duty cycle offset, ε2Indicate the second noise factor；
Electromechanical Control module, for controlling fan motor according to the motor curve of output.
7. device according to claim 6, which is characterized in that further include: smoothing module, for the superposition two
The motor curve of output of secondary noise is smoothed.
8. device according to claim 7, which is characterized in that the step-length of the smoothing processing is 2.
9. device according to claim 6, which is characterized in that the first noise factor meets condition: 0.55≤ε1≤
1.45。
10. device according to claim 6, which is characterized in that the second noise factor meets condition: 0.75≤ε2≤
1。
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| US20100092282A1 (en) * | 2008-10-13 | 2010-04-15 | Furui Precise Component (Kunshan) Co., Ltd. | Centrifugal fan |
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| CN105912041A (en) * | 2015-10-15 | 2016-08-31 | 深圳和而泰智能控制股份有限公司 | Natural wind simulation device and method |
| CN106949080A (en) * | 2017-03-21 | 2017-07-14 | 莱克电气股份有限公司 | A kind of method and apparatus of natural wind simulating |
| CN107152764A (en) * | 2017-05-31 | 2017-09-12 | 广东美的制冷设备有限公司 | Air-out control method, control system, air conditioner and the computer installation of air conditioner |
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- 2019-01-18 CN CN201910051529.9A patent/CN109812443B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100092282A1 (en) * | 2008-10-13 | 2010-04-15 | Furui Precise Component (Kunshan) Co., Ltd. | Centrifugal fan |
| CN103954000A (en) * | 2014-03-24 | 2014-07-30 | 美的集团股份有限公司 | Natural wind air-conditioner, natural wind air-conditioner system and control method for natural wind air-conditioner |
| CN204063452U (en) * | 2014-03-24 | 2014-12-31 | 美的集团股份有限公司 | Natural wind sampler, air-conditioner and air-conditioning system |
| CN105912041A (en) * | 2015-10-15 | 2016-08-31 | 深圳和而泰智能控制股份有限公司 | Natural wind simulation device and method |
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| CN107152764A (en) * | 2017-05-31 | 2017-09-12 | 广东美的制冷设备有限公司 | Air-out control method, control system, air conditioner and the computer installation of air conditioner |
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