CN109631172A - A kind of air-conditioning oscillation damping method and system - Google Patents
A kind of air-conditioning oscillation damping method and system Download PDFInfo
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- CN109631172A CN109631172A CN201811279534.7A CN201811279534A CN109631172A CN 109631172 A CN109631172 A CN 109631172A CN 201811279534 A CN201811279534 A CN 201811279534A CN 109631172 A CN109631172 A CN 109631172A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
- F24F1/08—Compressors specially adapted for separate outdoor units
- F24F1/12—Vibration or noise prevention thereof
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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Abstract
The invention discloses a kind of air-conditioning oscillation damping method and systems, by obtaining vibration of compressor frequency spectrum；Whether judge the sum of vibrational energy of preceding m rank of rumble spectrum/vibration energy >=the first setting ratio；If it is not, m adds 1；If so, determining the mode for accounting for the second setting contribution amount in every rank vibration to vibration in the preceding m rank of rumble spectrum, vibrating corresponding mode as every rank；For every group of pre-selection tie point: every rank vibrates corresponding mode in m rank before application rumble spectrum respectively, it obtains every rank and vibrates the vibratory response generated in response area, the vibratory response superposition that each rank vibration of preceding m rank is generated in response area obtains the conjunction vibration that every group of pre-selection tie point is generated in response area；The size for comparing the conjunction vibration that each group pre-selection tie point is generated in response area, obtains minimum value therein, and the corresponding one group of pre-selection tie point of the minimum value is best group tie point, and compressor is connect with best group tie point；Reduce air-conditioner housing vibration noise caused by vibration of compressor.
Description
Technical field
The invention belongs to antivibration areas, specifically, being to be related to a kind of air-conditioning oscillation damping method and system.
Background technique
Air-conditioner base plate is transferred to by vibration of compressor, and then caused case vibration noise problem is that air-conditioning vibration noise is ground
One of emphasis studied carefully.But at present mainly from optimization vibration isolation angle processing, to the optimization of tie point position between compressor and chassis compared with
Few, the excitation of different location will lead to the of different sizes of response, may result in more significantly without reasonably connecting arrangement
Vibration noise problem.
Summary of the invention
The present invention provides a kind of air-conditioning oscillation damping methods, reduce the vibration of the air-conditioner housing as caused by vibration of compressor and make an uproar
Sound.
It is achieved in order to solve the above technical problems, the present invention adopts the following technical solutions:
A kind of air-conditioning oscillation damping method, the compressor of air-conditioning are mounted on chassis, and the chassis includes excitation region and response area,
The excitation region includes multiple groups pre-selection tie point；The method includes the following steps:
(1) vibration of compressor frequency spectrum is obtained；
(2) whether judge the sum of vibrational energy of preceding m rank of rumble spectrum/vibration energy >=the first setting ratio；
If it is not, thening follow the steps (3): m adds 1, and return step (2)；
If so, executing following step:
(4) in the preceding m rank of rumble spectrum, the mould for accounting for the second setting contribution amount in every rank vibration to vibration is determined
State vibrates corresponding mode as every rank；
(5) be directed to every group of pre-selection tie point: every rank vibrates corresponding mode in m rank before application rumble spectrum respectively, then
It obtains every rank and vibrates the vibratory response generated in response area, each rank of preceding m rank is vibrated and is folded in the vibratory response that response area generates
Add, to obtain the conjunction vibration that every group of pre-selection tie point is generated in response area；
(6) size for comparing the conjunction vibration that each group pre-selection tie point is generated in response area, obtains minimum value therein, this is most
Small to be worth corresponding one group of pre-selection tie point for best group tie point, compressor is connect with best tie point of organizing.
Further, step (4) specifically includes:
(41) the setpoint frequency upper limit that every rank is vibrated in m rank before calculating: Fdi=P*Fi；
Wherein, Fi is the frequency of the i-th rank vibration of rumble spectrum, and Fdi is the setpoint frequency upper limit of the i-th rank vibration；I=1,
2,……,m；1 < P < 2；
(42) in every rank vibration of preceding m rank, the mode of modal frequency≤rank vibration setpoint frequency upper limit, meter are selected
The modal participation factors for the mode that every rank vibration is selected are calculated, and calculate the modal participation factors for all mode that every rank vibration is selected
The sum of；
(43) modal participation factors for all mode that the vibration of every rank is selected are sorted from large to small；
(44) in the vibration of every rank, the mould for all mode that the sum of k modal participation factors/rank vibration is selected before judging
Whether state participates in the sum of factor >=the second setting ratio；
If it is not, thening follow the steps (45): k adds 1, and return step (44)；
If so, determining that accounting for second to vibration in the rank is vibrated sets the mode of contribution amount as preceding k mode
The corresponding mode of the factor is participated in, vibrates corresponding mode as the rank.
Further, step (5) specifically includes:
(51) response area is subjected to gridding, test point of the node of grid as vibratory response；
(52) to the one group of pre-selection tie point chosen, every rank vibrates corresponding mode in m rank before applying respectively；
On each test point, every rank is obtained respectively and vibrates the vibratory response generated in test point, each rank of preceding m rank is shaken
The vibratory response superposition generated in test point is moved, to obtain the conjunction vibration that group pre-selection tie point is generated in each test point；
The conjunction vibration superposition that group pre-selection tie point is generated in each test point obtains group pre-selection tie point and is responding
The conjunction vibration that area generates；
(53) traversal chooses all groups of pre-selection tie points of excitation region, repeats step (52), thus obtain every group it is pre-
The conjunction vibration for selecting tie point to generate in response area.
Further, the method also includes: excitation region is subjected to gridding；It is selected according to the bottom structure of compressor
The node of grid selects multiple groups pre-selection tie point.
Further, first ratio is set as 90%.
Further, second ratio is set as 90%.
Further, P=1.2.
Based on the design of above-mentioned air-conditioning oscillation damping method, the invention also provides a kind of air-conditioning vibration insulating system, the compressions of air-conditioning
Machine is mounted on chassis, and the chassis includes excitation region and response area, and the excitation region includes multiple groups pre-selection tie point；The system
System includes: acquisition module, for obtaining vibration of compressor frequency spectrum；Judgment module, the vibration of the preceding m rank for judging rumble spectrum
The sum of energy/vibration energy whether >=first setting ratio；If it is not, then m adds 1；Mode determining module, in rumble spectrum
Preceding m rank in, determine the mode for accounting for the second setting contribution amount in the vibration of every rank to vibration, vibrate corresponding mould as every rank
State；Vibration determining module is closed, for being directed to every group of pre-selection tie point: every rank vibration corresponds in m rank before application rumble spectrum respectively
Mode, then obtain every rank and vibrate the vibratory response generated in response area, each rank of preceding m rank vibrated and is generated in response area
Vibratory response superposition, to obtain the conjunction vibration that every group of pre-selection tie point is generated in response area；Comparison module, for comparing each group
The size for the conjunction vibration that pre-selection tie point is generated in response area, obtains minimum value therein, the corresponding one group of pre-selection of the minimum value
Tie point is best group tie point, and compressor is connect with best group tie point.
Further, mode determining module specifically includes: frequency determinative elements, for every rank vibration in m rank before calculating
The setpoint frequency upper limit: Fdi=P*Fi；Wherein, Fi is the frequency of the i-th rank vibration of rumble spectrum, and Fdi is setting for the i-th rank vibration
Determine upper frequency limit；I=1,2 ..., m；1 < P < 2；Computing unit, for selecting mode frequency in the vibration of every rank of preceding m rank
The mode of rate≤rank vibration setpoint frequency upper limit, calculates the modal participation factors for the mode that every rank vibration is selected, and calculates
The sum of the modal participation factors for all mode that every rank vibration is selected；Sequencing unit, for every rank to be vibrated all moulds selected
The modal participation factors of state sort from large to small；Judging unit, for judging preceding k modal participation factors in the vibration of every rank
The sum of/the sum of modal participation factors of all mode for selecting of rank vibration whether >=the second setting ratio；If it is not, then k adds 1；
Mode determination unit, for determining that accounting for second to vibration in the rank is vibrated sets the mode of contribution amount as preceding k mould
State participates in the corresponding mode of the factor, vibrates corresponding mode as the rank.
Further, vibration determining module is closed, is specifically included: gridding unit, for response area to be carried out gridding,
Test point of the node of grid as vibratory response；Vibration determination unit is closed, for the one group of pre-selection tie point chosen, difference
Every rank vibrates corresponding mode in m rank before applying；On each test point, every rank is obtained respectively and vibrates the vibration generated in test point
Each rank vibration of preceding m rank is superimposed by dynamic response in the vibratory response that test point generates, to obtain group pre-selection tie point every
The conjunction vibration that a test point generates；The conjunction vibration superposition that group pre-selection tie point is generated in each test point, it is pre- to obtain the group
The conjunction vibration for selecting tie point to generate in response area；Traversal Unit, for traversing all groups of pre-selection tie points for choosing excitation region.
Compared with prior art, the advantages and positive effects of the present invention are: air-conditioning oscillation damping method of the invention and system, lead to
Cross acquisition vibration of compressor frequency spectrum；Whether judge the sum of vibrational energy of preceding m rank of rumble spectrum/vibration energy >=it first sets
Determine ratio；If it is not, then m adds 1；If so, determining in every rank vibration in the preceding m rank of rumble spectrum and accounting for the second setting to vibration
The mode of contribution amount vibrates corresponding mode as every rank；For every group of pre-selection tie point: before applying rumble spectrum respectively
Every rank vibrates corresponding mode in m rank, then obtains every rank and vibrates the vibratory response generated in response area, by each rank of preceding m rank
The vibratory response superposition generated in response area is vibrated, to obtain the conjunction vibration that every group of pre-selection tie point is generated in response area；Than
Compared with the size for the conjunction vibration that each group pre-selection tie point is generated in response area, minimum value therein is obtained, the minimum value corresponding one
Group pre-selection tie point is best group tie point, and compressor is connect with best group tie point；When compressor is connected to best group connection
When point, the vibration of chassis response area is minimum, and then the vibration for being transferred to air-conditioner housing is also minimum, is shaken to reduce by compressor
Air-conditioner housing vibration noise caused by dynamic.
After a specific embodiment of the invention is read in conjunction with the figure, the other features and advantages of the invention will become more clear
Chu.
Detailed description of the invention
Fig. 1 is the flow chart of one embodiment of air-conditioning oscillation damping method proposed by the present invention；
Fig. 2 is the structural schematic diagram on chassis.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, below with reference to drawings and examples,
Invention is further described in detail.
The compressor of air-conditioning is mounted in air-conditioner base plate, and chassis includes excitation region and response area.Excitation region is compressor
Installation region, since the vibration of compressor passes to installation region first, installation region is known as excitation region, and response area is bottom
Region on disk other than excitation region causes the vibration of response area, since the vibration of excitation region is transmitted to response area so as to cause sky
The vibration of shell is adjusted, it is shown in Figure 2.
Excitation region is subjected to gridding, according to the bottom structure of compressor select grid node, as pre-selection tie point,
Multiple groups pre-selection tie point is selected, excitation region includes multiple groups pre-selection tie point.It is all for the ease of finding out by excitation region gridding
Pre-selection tie point.For example, excitation region gridding is latter to share 100 nodes, this 100 nodes be likely to be and compressor
The position of connection, if compressor bottom structure needs three tie points, according to the relative positional relationship of these three tie points, from
3 nodes are selected in 100 nodes every time, as one group of prepared tie point, all nodes is traversed, finds out all possible preparation
Tie point, to select multiple groups preparation tie point, every group of prepared tie point includes three nodes.
The air-conditioning oscillation damping method of the present embodiment, specific step is as follows, shown in Figure 1.
Step S1: vibration of compressor frequency spectrum is obtained.
Two graphical representations that vibration of compressor frequency spectrum is generally frequency with abscissa, ordinate is amplitude, Mei Gepin
Rate corresponds to an amplitude.Available array [Fi, Ai] indicates that Fi is the frequency of the i-th rank vibration, and Ai is the amplitude of the i-th rank vibration, Fi
It is corresponded with Ai, i=1,2,3 ... ..., n.N is the order of rumble spectrum, and if n is 8, then rumble spectrum shares the vibration of 8 ranks.
Step S2: whether judge the sum of vibrational energy of preceding m rank of rumble spectrum/vibration energy >=the first setting ratio
Value.1≤m≤n.
The sum of the vibrational energy of preceding m rank isVibration energy isJudgementWhether >=the first setting ratio.
If it is not, thening follow the steps S3:m adds 1, return step S2, until>=the first
Set ratio.
If so, illustrate F1, F2 ..., the corresponding vibrational energy of Fm is larger, preceding m rank be principal vibration order, remaining
Rank can not consider, then execute following step.
For example, m initial value is 1, if when m=1, being unsatisfactory for above-mentioned condition, then m adds 1, m=2, if m=2 is also discontented with
Sufficient above-mentioned condition, then m adds 1, m=3 again, if m=3 meets above-mentioned condition, executes step S4 downwards.
In the present embodiment, first ratio is set as 90%.If the sum of vibrational energy of preceding m rank/vibration energy >=
90%, the vibrational energy of m rank has accounted for the overwhelming majority before illustrating, remaining can not considered, complicated to avoid calculating.If first
Ratio > 90% is set, it is cumbersome to may cause calculating；If the first setting ratio < 90%, may have been omitted other vibrational energies
Amount.
Step S4: it in the preceding m rank of rumble spectrum, determines in every rank vibration and the second setting contribution amount is accounted for vibration
Mode vibrates corresponding mode as every rank.
Modal participation factors are also known as modal participation factors matrix, it by modal vector transposition and corresponding ratiometric conversion because
The product of sub- Q is constituted, and is a kind of measurement of each excitation freedom degree to each rank modal excitation validity.For popular, structure exists
Unlimited multi-modes, when structure is by dynamic excitation, this motivates all mode that can not evoke structure, and can only evoke
A part of mode participates in the response of structure, and this participates in the factor and just embodies which mode takes part in caused by the exciting force
Response.It can be regarded as adding a power to structure, have very multi-modes and motivated, the vibration of structure is exactly all moulds motivated
The superposition of state, and participate in the contribution amount that the factor is exactly each rank mode.
The step specifically include the following steps:
Step S41: the setpoint frequency upper limit that every rank is vibrated in m rank before calculating: Fdi=P*Fi.
Wherein, Fi is the i-th rank vibration frequency of rumble spectrum, and Fdi is the setpoint frequency upper limit of the i-th rank vibration；I=1,
2,……,m.P is constant, 1 < P < 2.
In the present embodiment, P=1.2.Not only it had avoided value is excessive from causing to calculate cumbersome, and but also had avoided value is too small from neglecting master
The mode wanted.
Step S42: in every rank vibration of preceding m rank, the bottom of modal frequency≤rank vibration setpoint frequency upper limit is selected
The mode of disk, calculates the modal participation factors for the mode that every rank vibration is selected, and calculates all mode that every rank vibration is selected
The sum of modal participation factors.
Every single order vibrates the corresponding amplitude A of each frequency F in other words, is formed by stacking by many rank modal vibrations
, and every first-order modal has a modal participation factors.MPFijFor the modal participation factors of the jth rank mode of the i-th rank vibration.
Assuming that when m=2, the sum of vibrational energy of preceding m rank/vibration energy >=90%.
The frequency of 1st rank vibration is 50Hz, and Fd1=1.2*50Hz=60Hz, the mode of modal frequency > 60Hz is to the rank
The influence very little of vibration, is not considered；Assuming that there are quadravalence mode, i.e. the 1st rank on chassis in the range of modal frequency≤60Hz
Mode, the 2nd rank mode, the 3rd rank mode, the 4th rank mode, the modal participation factors of this quadravalence mode are respectively as follows: MPF11=0.3,
MPF12=0.1, MPF13=0.2, MPF14=0.05.The sum of the modal participation factors for all mode that rank vibration is selected are as follows:
0.3+0.1+0.2+0.05=0.65.
The frequency of 2nd rank vibration is 60Hz, and Fd2=1.2*60Hz=72Hz, the mode of modal frequency > 72Hz is to the rank
The influence very little of vibration, is not considered；Assuming that there are five rank mode, i.e. the 1st rank on chassis in the range of modal frequency≤72Hz
The modal participation factors of mode, the 2nd rank mode, the 3rd rank mode, the 4th rank mode, the 5th rank mode, this five ranks mode are respectively as follows:
MPF21=0.4, MPF22=0.1, MPF23=0.2, MPF24=0.05, MPF25=0.15.The rank vibrates all mode selected
The sum of modal participation factors are as follows: 0.4+0.1+0.2+0.05+0.15=0.9.
Step S43: the modal participation factors for all mode that the vibration of every rank is selected are sorted from large to small.
For example, four modal participation factors that the vibration of the 1st rank is selected are sorted from large to small are as follows:
MPF11、MPF13、MPF12、MPF14。
Five modal participation factors that the vibration of 2nd rank is selected are sorted from large to small are as follows:
MPF21、MPF23、MPF25、MPF22、MPF24。
Step S44: in the vibration of every rank, the sum of the k modal participation factors/rank vibrates all mode selected before judging
The sum of modal participation factors whether >=the second setting ratio.
If it is not, thening follow the steps S45:k adds 1, and return step S44.
If so, determining that accounting for second to vibration in the rank is vibrated sets the mode of contribution amount as preceding k mode
The corresponding mode of the factor is participated in, vibrates corresponding mode as the rank.
In the present embodiment, second ratio is set as 90%.If the sum of preceding k modal participation factors/rank vibration is selected
The sum of all modal participation factors of mode >=90%, the corresponding mode of k modal participation factors is led to having vibrated before illustrating
Contribution amount is wanted, remaining can not considered, complicated to avoid calculating.If the second setting ratio > 90%, it is numerous to may cause calculating
It is trivial；If the second setting ratio < 90%, may have been omitted other mode.
The initial value of k is 1, and maximum value is equal to the quantity for the mode that rank vibration is selected.
For example,
In the vibration of the 1st rank, k=1 first, 1≤k≤4.
The sum of preceding 1 modal participation factors are 0.3,0.3/0.65=0.462 < 0.9；Then k adds 1；
The sum of preceding 2 modal participation factors are 0.3+0.2=0.5,0.5/0.65=0.769 < 0.9；Then k adds 1 again；
The sum of preceding 3 modal participation factors are 0.3+0.2+0.1=0.6,0.6/0.65=0.923 > 0.9；Then determine
The mode for accounting for 90% contribution amount to vibration in rank vibration is the corresponding mode of preceding 3 modal participation factors, i.e. the 1st rank mould
State, the 3rd rank mode, the 2nd rank mode vibrate corresponding mode as the rank.
In the vibration of the 2nd rank, k=1 first, 1≤k≤5.
The sum of preceding 1 modal participation factors are 0.4,0.4/0.9=0.444 < 0.9；Then k adds 1；
The sum of preceding 2 modal participation factors are 0.4+0.2=0.6,0.6/0.9=0.667 < 0.9；Then k adds 1 again；
The sum of preceding 3 modal participation factors are 0.4+0.2+0.15=0.75,0.75/0.9=0.833 < 0.9；Then k is again
Add 1；
The sum of preceding 4 modal participation factors are 0.4+0.2+0.15+0.1=0.85,0.85/0.9=0.944 > 0.9；Then
Determine the rank vibrate in vibration account for 90% contribution amount mode be the corresponding mode of preceding 4 modal participation factors, i.e., the 1st
Rank mode, the 3rd rank mode, the 5th rank mode, the 2nd rank mode vibrate corresponding mode as the rank.
Step S5: be directed to every group of pre-selection tie point: every rank vibrates corresponding mode in m rank before application rumble spectrum respectively,
Then it obtains every rank and vibrates the vibratory response generated in response area, each rank vibration of preceding m rank is rung in the vibration that response area generates
It should be superimposed, to obtain the conjunction vibration that every group of pre-selection tie point is generated in response area.
The step specifically includes:
Step S51: response area is subjected to gridding, test point of the node of grid as vibratory response.
Step S52:
S521: to the one group of pre-selection tie point chosen, every rank vibrates corresponding mode in m rank before applying respectively.
For example, preselect tie point to the group chosen, apply the 1st rank mode of the 1st rank vibration, the 3rd rank mode, the respectively
2 rank mode；The 1st rank mode, the 3rd rank mode, the 5th rank mode, the 2nd rank mode of 2nd rank vibration.
S522: on each test point, every rank is obtained respectively and vibrates the vibratory response generated in test point, by preceding m rank
The vibratory response superposition that each rank vibration is generated in test point, to obtain the conjunction that group pre-selection tie point is generated in each test point
Vibration.
For example, for one of test point,
Firstly, obtaining the 1st rank mode, the 3rd rank mode, the 2nd rank mode of the vibration of the 1st rank respectively in the 1st rank vibration frequency
F1 is in vibratory response R11, R13, R12 of test point generation, which can be detected by vibrating sensor；By these three
Vibratory response summation, R1=R11+R13+R12 obtain the 1st rank and vibrate the vibratory response R1 generated in the test point.
Then, obtain that the 1st rank mode of the 2nd rank vibration, the 3rd rank mode, the 5th rank mode, the 2nd rank mode is the 2nd respectively
Rank vibration frequency F2 be in the test point generation vibratory response R21, R23, R25, R22, the step can by vibrating sensor into
Row detection；By this four vibratory response summations, R2=R21+R23+R25+R22 obtains what the vibration of the 2nd rank was generated in the test point
Vibratory response R2.
It is generated finally, vibrating vibratory response R1 that the vibration of the 1st rank is generated in the test point and the 2nd rank in the test point
Vibratory response R2 superposition,To show that group pre-selection tie point is vibrated in the conjunction that the test point generates
S523: the conjunction vibration that group pre-selection tie point is generated in each test point is obtained using identical method, by the group
Conjunction vibration superposition that pre-selection tie point is generated in each test point (superposition refers to that these is first asked to close the quadratic sum vibrated,
Then the quadratic sum found out is opened into radical sign again), obtain the conjunction vibration that group pre-selection tie point is generated in response area.
Step S53: traversal chooses all groups of pre-selection tie points of excitation region, step S52 is repeated, to obtain every group
The conjunction vibration that pre-selection tie point is generated in response area.
That is, choosing each group of pre-selection tie point in turn, step S52 is executed to the one group of pre-selection tie point chosen,
To obtain the conjunction vibration that every group of pre-selection tie point is generated in response area.
Step S6: comparing the size for the conjunction vibration that each group pre-selection tie point is generated in response area, obtain minimum value therein,
The corresponding one group of pre-selection tie point of the minimum value is best group tie point, and compressor is connect with best group tie point.
Best group tie point is best connection position of the compressor on chassis, when compressor is connected to best group tie point
When, the vibration of chassis response area is minimum, it is improved as far as possible since compressor is transferred to vibration noise problem caused by chassis,
The air-conditioner housing vibration noise as caused by vibration of compressor is reduced, while shortening the development cycle, reduces development cost.
The air-conditioning oscillation damping method of the present embodiment, by obtaining vibration of compressor frequency spectrum；Judge the vibration of the preceding m rank of rumble spectrum
The sum of energy/vibration energy whether >=first setting ratio；If it is not, then m adds 1；If so, in the preceding m rank of rumble spectrum
In, it determines the mode for accounting for the second setting contribution amount in every rank vibration to vibration, vibrates corresponding mode as every rank；For
Every group of pre-selection tie point: every rank vibrates corresponding mode in m rank before application rumble spectrum respectively, then obtains every rank vibration in sound
The vibratory response for answering area to generate, the vibratory response superposition that the vibration of each rank of preceding m rank is generated in response area, thus obtain every group it is pre-
The conjunction vibration for selecting tie point to generate in response area；The size for comparing the conjunction vibration that each group pre-selection tie point is generated in response area, is obtained
Minimum value therein is obtained, the corresponding one group of pre-selection tie point of the minimum value is best group tie point, and compressor is connected with most preferably group
Point connection；When compressor is connected to best group tie point, the vibration of chassis response area is minimum, and then is transferred to air-conditioner housing
Vibration is also minimum, to reduce the air-conditioner housing vibration noise as caused by vibration of compressor.
The method of the present embodiment is based primarily upon to compressor principal vibration energy frequency signature analysis, modal participation factors
Analysis, and the analysis methods such as Response Analysis based on mode, identify principal vibration energy feature and corresponding main knot
Structure mode finds out best connection position by the superposition of Response Analysis, comparative analysis.
The method of the present embodiment can determine compressor most preferably connecting on chassis at Air-conditioner design initial stage by the above method
Position is connect, improves as far as possible and vibration noise problem caused by chassis is transferred to as compressor, while shortening the development cycle, is reduced
Development cost.
Based on the design of above-mentioned air-conditioning oscillation damping method, the present embodiment also proposed a kind of air-conditioning vibration insulating system, the pressure of air-conditioning
Contracting machine is mounted on chassis, and the chassis includes excitation region and response area, and the excitation region includes multiple groups pre-selection tie point；It is described
System includes obtaining module, judgment module, mode determining module, closing and vibrate determining module, comparison module etc..
Module is obtained, for obtaining vibration of compressor frequency spectrum.
Judgment module, the sum of vibrational energy of preceding m rank for judging rumble spectrum/vibration energy whether >=first set
Determine ratio；If it is not, then m adds 1.
Mode determining module accounts for the second setting ratio to vibration in the preceding m rank of rumble spectrum, determining in every rank vibration
It is worth the mode of contribution amount, vibrates corresponding mode as every rank.
Vibration determining module is closed, for being directed to every group of pre-selection tie point: every rank vibration in m rank before application rumble spectrum respectively
Then corresponding mode obtains every rank and vibrates the vibratory response generated in response area, each rank vibration of preceding m rank is produced in response area
Raw vibratory response superposition, to obtain the conjunction vibration that every group of pre-selection tie point is generated in response area.
Comparison module obtains therein for comparing the size for the conjunction vibration that each group pre-selection tie point is generated in response area
Minimum value, the corresponding one group of pre-selection tie point of the minimum value are best group tie point, and compressor is connect with best group tie point.
Mode determining module specifically includes frequency determinative elements, computing unit, sequencing unit, judging unit, mode and determines
Unit.
Frequency determinative elements, for the setpoint frequency upper limit that every rank is vibrated in m rank before calculating: Fdi=P*Fi；Wherein, Fi
For the frequency that the i-th rank of rumble spectrum is vibrated, Fdi is the setpoint frequency upper limit of the i-th rank vibration；I=1,2 ..., m；1 < P <
2。
Computing unit, in the vibration of every rank of preceding m rank, selecting modal frequency≤rank vibration setpoint frequency upper limit
Mode, calculate the modal participation factors for the mode that the vibration of every rank is selected, and calculate the mould for all mode that every rank vibration is selected
State participates in the sum of factor.
The modal participation factors of sequencing unit, all mode for selecting the vibration of every rank sort from large to small.
Judging unit, in the vibration of every rank, the sum of the k modal participation factors/rank to vibrate the institute selected before judging
Whether there are the sum of modal participation factors of mode >=the second setting ratio；If it is not, then k adds 1.
Mode determination unit, for determine in the rank is vibrated to vibration account for second set the mode of contribution amount as
The corresponding mode of preceding k modal participation factors vibrates corresponding mode as the rank.
Vibration determining module is closed, gridding unit is specifically included, closes vibration determination unit, Traversal Unit.
Gridding unit, for response area to be carried out gridding, test point of the node of grid as vibratory response.
Vibration determination unit is closed, for the one group of pre-selection tie point chosen, every rank vibration to be corresponded in m rank before applying respectively
Mode；On each test point, every rank is obtained respectively and vibrates the vibratory response generated in test point, each rank of preceding m rank is shaken
The vibratory response superposition generated in test point is moved, to obtain the conjunction vibration that group pre-selection tie point is generated in each test point；
The conjunction vibration superposition that group pre-selection tie point is generated in each test point obtains what group pre-selection tie point was generated in response area
Close vibration.
Traversal Unit, for traversing all groups of pre-selection tie points for choosing excitation region.
The course of work of specific air-conditioning vibration insulating system, is described in detail in above-mentioned air-conditioning oscillation damping method, not superfluous herein
It states.
The air-conditioning vibration insulating system of the present embodiment, by obtaining vibration of compressor frequency spectrum；Judge the vibration of the preceding m rank of rumble spectrum
The sum of energy/vibration energy whether >=first setting ratio；If it is not, then m adds 1；If so, in the preceding m rank of rumble spectrum
In, it determines the mode for accounting for the second setting contribution amount in every rank vibration to vibration, vibrates corresponding mode as every rank；For
Every group of pre-selection tie point: every rank vibrates corresponding mode in m rank before application rumble spectrum respectively, then obtains every rank vibration in sound
The vibratory response for answering area to generate, the vibratory response superposition that the vibration of each rank of preceding m rank is generated in response area, thus obtain every group it is pre-
The conjunction vibration for selecting tie point to generate in response area；The size for comparing the conjunction vibration that each group pre-selection tie point is generated in response area, is obtained
Minimum value therein is obtained, the corresponding one group of pre-selection tie point of the minimum value is best group tie point, and compressor is connected with most preferably group
Point connection；When compressor is connected to best group tie point, the vibration of chassis response area is minimum, and then is transferred to air-conditioner housing
Vibration is also minimum, to reduce the air-conditioner housing vibration noise as caused by vibration of compressor.
The above embodiments are merely illustrative of the technical solutions of the present invention, rather than is limited；Although referring to aforementioned reality
Applying example, invention is explained in detail, for those of ordinary skill in the art, still can be to aforementioned implementation
Technical solution documented by example is modified or equivalent replacement of some of the technical features；And these are modified or replace
It changes, the spirit and scope for claimed technical solution of the invention that it does not separate the essence of the corresponding technical solution.
Claims (10)
1. a kind of air-conditioning oscillation damping method, the compressor of air-conditioning are mounted on chassis, it is characterised in that: the chassis includes excitation region
And response area, the excitation region include multiple groups pre-selection tie point；The method includes the following steps:
(1) vibration of compressor frequency spectrum is obtained；
(2) whether judge the sum of vibrational energy of preceding m rank of rumble spectrum/vibration energy >=the first setting ratio；
If it is not, thening follow the steps (3): m adds 1, and return step (2)；
If so, executing following step:
(4) it in the preceding m rank of rumble spectrum, determines the mode for accounting for the second setting contribution amount in every rank vibration to vibration, makees
Corresponding mode is vibrated for every rank；
(5) be directed to every group of pre-selection tie point: every rank vibrates corresponding mode in m rank before application rumble spectrum respectively, then obtains
Every rank vibrates the vibratory response generated in response area, and each rank vibration of preceding m rank is superimposed in the vibratory response that response area generates, from
And obtain the conjunction vibration that every group of pre-selection tie point is generated in response area；
(6) size for comparing the conjunction vibration that each group pre-selection tie point is generated in response area, obtains minimum value therein, the minimum value
Corresponding one group of pre-selection tie point is best group tie point, and compressor is connect with best group tie point.
2. oscillation damping method according to claim 1, it is characterised in that: step (4) specifically includes:
(41) the setpoint frequency upper limit that every rank is vibrated in m rank before calculating: Fdi=P*Fi；
Wherein, Fi is the frequency of the i-th rank vibration of rumble spectrum, and Fdi is the setpoint frequency upper limit of the i-th rank vibration；i=1,
2,……,m；1 < P < 2；
(42) in every rank vibration of preceding m rank, the mode of modal frequency≤rank vibration setpoint frequency upper limit is selected, is calculated every
The modal participation factors of mode that rank vibration is selected, and calculate all mode that every rank vibration is selected modal participation factors it
With；
(43) modal participation factors for all mode that the vibration of every rank is selected are sorted from large to small；
(44) in the vibration of every rank, the mode ginseng for all mode that the sum of k modal participation factors/rank vibration is selected before judging
With the sum of the factor whether >=the second setting ratio；
If it is not, thening follow the steps (45): k adds 1, and return step (44)；
If so, determining that account for the mode that second sets contribution amount to vibration in the rank is vibrated participates in as preceding k mode
The corresponding mode of the factor vibrates corresponding mode as the rank.
3. oscillation damping method according to claim 1, it is characterised in that: step (5) specifically includes:
(51) response area is subjected to gridding, test point of the node of grid as vibratory response；
(52) to the one group of pre-selection tie point chosen, every rank vibrates corresponding mode in m rank before applying respectively；
On each test point, every rank being obtained respectively and vibrates the vibratory response generated in test point, each rank vibration of preceding m rank is existed
The vibratory response superposition that test point generates, to obtain the conjunction vibration that group pre-selection tie point is generated in each test point；
The conjunction vibration superposition that group pre-selection tie point is generated in each test point, obtains group pre-selection tie point and produces in response area
Raw conjunction vibration；
(53) traversal chooses all groups of pre-selection tie points of excitation region, repeats step (52), to show that every group of pre-selection connects
The conjunction vibration that contact is generated in response area.
4. oscillation damping method according to claim 1, it is characterised in that: the method also includes:
Excitation region is subjected to gridding；
The node that grid is selected according to the bottom structure of compressor selects multiple groups pre-selection tie point.
5. oscillation damping method according to claim 1, it is characterised in that: first sets ratio as 90%.
6. oscillation damping method according to claim 2, it is characterised in that: second sets ratio as 90%.
7. oscillation damping method according to claim 2, it is characterised in that: P=1.2.
8. a kind of air-conditioning vibration insulating system, the compressor of air-conditioning are mounted on chassis, it is characterised in that: the chassis includes excitation region
And response area, the excitation region include multiple groups pre-selection tie point；The system comprises:
Module is obtained, for obtaining vibration of compressor frequency spectrum；
Judgment module, the sum of vibrational energy of preceding m rank for judging rumble spectrum/vibration energy whether >=first setting ratio
Value；If it is not, then m adds 1；
Mode determining module accounts for the second setting ratio tribute to vibration in the preceding m rank of rumble spectrum, determining in every rank vibration
The mode for the amount of offering vibrates corresponding mode as every rank；
Vibration determining module is closed, for being directed to every group of pre-selection tie point: every rank vibration corresponds in m rank before application rumble spectrum respectively
Mode, then obtain every rank and vibrate the vibratory response generated in response area, each rank of preceding m rank vibrated and is generated in response area
Vibratory response superposition, to obtain the conjunction vibration that every group of pre-selection tie point is generated in response area；
Comparison module obtains minimum therein for comparing the size for the conjunction vibration that each group pre-selection tie point is generated in response area
Value, the corresponding one group of pre-selection tie point of the minimum value are best group tie point, and compressor is connect with best group tie point.
9. vibration insulating system according to claim 8, it is characterised in that: mode determining module specifically includes:
Frequency determinative elements, for the setpoint frequency upper limit that every rank is vibrated in m rank before calculating: Fdi=P*Fi；Wherein, Fi is vibration
The frequency of the i-th rank vibration of frequency spectrum, Fdi are the setpoint frequency upper limit of the i-th rank vibration；i=1,2,……,m；1 < P < 2；
Computing unit, in the vibration of every rank of preceding m rank, selecting the mould of modal frequency≤rank vibration setpoint frequency upper limit
State, calculates the modal participation factors for the mode that every rank vibration is selected, and calculates the mode ginseng for all mode that every rank vibration is selected
The sum of with the factor；
The modal participation factors of sequencing unit, all mode for selecting the vibration of every rank sort from large to small；
Judging unit, in the vibration of every rank, the sum of the k modal participation factors/rank to vibrate all moulds selected before judging
The sum of modal participation factors of state whether >=second setting ratio；If it is not, then k adds 1；
Mode determination unit, for determining that accounting for second to vibration in the rank is vibrated sets the mode of contribution amount as preceding k
The corresponding mode of a modal participation factors vibrates corresponding mode as the rank.
10. vibration insulating system according to claim 8, it is characterised in that: close vibration determining module, specifically include:
Gridding unit, for response area to be carried out gridding, test point of the node of grid as vibratory response；
Vibration determination unit is closed, for the one group of pre-selection tie point chosen, every rank to vibrate corresponding mould in m rank before applying respectively
State；On each test point, every rank being obtained respectively and vibrates the vibratory response generated in test point, each rank vibration of preceding m rank is existed
The vibratory response superposition that test point generates, to obtain the conjunction vibration that group pre-selection tie point is generated in each test point；It should
The conjunction vibration superposition that group pre-selection tie point is generated in each test point obtains the conjunction vibration that group pre-selection tie point is generated in response area
It is dynamic；
Traversal Unit, for traversing all groups of pre-selection tie points for choosing excitation region.
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Effective date of registration: 20210514 Address after: 266101 Haier Industrial Park, 1 Haier Road, Laoshan District, Shandong, Qingdao Applicant after: QINGDAO HAIER AIR CONDITIONER ELECTRIC Co.,Ltd. Applicant after: Haier Zhijia Co.,Ltd. Address before: 266101 Haier Industrial Park, 1 Haier Road, Laoshan District, Shandong, Qingdao Applicant before: QINGDAO HAIER AIR CONDITIONER ELECTRIC Co.,Ltd. |
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