CN107294472B - A kind of motor control method, device and equipment - Google Patents
A kind of motor control method, device and equipment Download PDFInfo
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- CN107294472B CN107294472B CN201710369067.6A CN201710369067A CN107294472B CN 107294472 B CN107294472 B CN 107294472B CN 201710369067 A CN201710369067 A CN 201710369067A CN 107294472 B CN107294472 B CN 107294472B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P29/00—Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors
- H02P29/02—Providing protection against overload without automatic interruption of supply
- H02P29/032—Preventing damage to the motor, e.g. setting individual current limits for different drive conditions
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- Control Of Electric Motors In General (AREA)
Abstract
The present invention provides a kind of motor control method, device and equipment, at least to solve the problems, such as that water pump in the related technology and pipeline will appear resonance.Wherein, motor control method includes: the operating frequency range for obtaining corresponding motor when the amplitude of driven equipment generation is more than the first default amplitude, and the motor is for driving driven equipment；Each set of frequency in the operating frequency range that will acquire is the frequency hopping point of motor；Motor is controlled according to the frequency hopping of motor point.This method can evade the generation of water pump and pipeline resonance, improve the stability of system.
Description
Technical field
The present invention relates to motor control technology fields, in particular to a kind of motor control method, device and equipment.
Background technique
Currently, generally will use variable frequency pump in HVAC project, variable frequency pump is controlled according to certain control logic
System can achieve energy-efficient effect.But variable frequency pump often appears in frequency converter and is loaded into one in the application of Practical Project
It will lead to water pump when fixed frequency and pipeline lead to the problem of resonance.Since the complexity of water system pipe network makes water pump and pipeline
Often occurs resonance point at different frequencies.The phenomenon can generate very big noise, and variable frequency pump is for a long time this
In the case of operation can shorten the service life of variable frequency pump, influence pipe network and send water.
Summary of the invention
The present invention provides a kind of motor control method, device and equipment, at least to solve water pump in the prior art and pipe
Road will appear the problem of resonance.
According to the first aspect of the invention, a kind of motor control method is provided, comprising: obtain driven equipment and generate
Amplitude corresponding motor when being more than the first default amplitude operating frequency range, the motor described sets for driving by driving
It is standby；It is the frequency hopping point of the motor by each set of frequency in the operating frequency range；According to the frequency hopping of motor point pair
The motor is controlled.
Optionally, the method also includes: during the motor operation, periodically obtain the driven equipment and produce
The working frequency of raw amplitude and the motor；When the motor is run with the first working frequency so that the driven equipment
The amplitude of generation is more than in the case that the number of the second default amplitude is more than preset times, to set first working frequency to
The frequency hopping point of the motor.
Optionally, the method also includes: receive network side send the motor the second working frequency；If described
Second working frequency is identical as the frequency hopping of motor point, then issues alarm prompt；If received after issuing the alarm prompt
To the instruction message for confirming second working frequency, then the target of the motor is determined based on second working frequency
Working frequency, the target operating frequency are different from second working frequency.
Optionally, the target operating frequency that the motor is determined based on second working frequency, comprising:
Increase preset value on the basis of second working frequency, obtains the first calibration frequency；On the basis of second working frequency
On subtract the preset value, obtain the second calibration frequency；Control the motor with predetermined period with first calibration frequency with
And the second calibration frequency alternate run.
According to the second aspect of the invention, a kind of motor control assembly is provided, comprising:
First obtains module, corresponding motor when being more than the first default amplitude of the amplitude for obtaining driven equipment generation
Operating frequency range, the motor is for driving the driven equipment；First setup module is used for the working frequency
Each set of frequency in range is the frequency hopping point of the motor；Control module, for the frequency hopping point according to the motor to described
Motor is controlled.
Optionally, described device further include: second obtains module, for periodically obtaining during the motor operation
The working frequency of the amplitude and the motor that take the driven equipment to generate；Second setup module, for working as the motor
It is run with the first working frequency so that the number that the amplitude that the driven equipment generates is more than the second default amplitude is more than default
In the case where number, it sets first working frequency to the frequency hopping point of the motor.
Optional described device further include: receiving module, the second work of the motor for receiving network side transmission
Frequency；Cue module issues alarm prompt if identical as the frequency hopping of motor point for second working frequency；
Determining module, if for receiving the instruction message for confirming second working frequency after issuing the alarm prompt, with
The target operating frequency of the motor, the target operating frequency and second work are determined based on second working frequency
Working frequency is different.
Optionally, the determining module, comprising: first obtains unit, on the basis of second working frequency
Increase preset value, obtains the first calibration frequency；Second obtaining unit, for subtracting institute on the basis of second working frequency
Preset value is stated, the second calibration frequency is obtained；Control unit, for controlling the motor with predetermined period with the first calibration frequency
Rate and the second calibration frequency alternate run.
According to the third aspect of the present invention, a kind of electric machinery control device is provided, the equipment includes: motor, vibration
Detection device and control device；The vibration detection device is used to detect the amplitude of driven equipment generation, and the motor is used
In the driving driven equipment；The amplitude that the control device is used to obtain driven equipment generation is more than the first default amplitude
When corresponding motor operating frequency range, be the frequency hopping of the motor by each set of frequency in the operating frequency range
Point；The motor is controlled according to the frequency hopping point.
Optionally, the vibration detection device is set to inside the motor, and the vibration detection device includes displacement inspection
Survey device or acceleration detecting.
The scheme that the embodiment of the present invention proposes obtains the work of the corresponding motor of resonance point by the detection to resonance point
Set of frequency in the frequency range is the frequency hopping point of motor, is controlled according to the frequency hopping point motor, energy by frequency range
The generation for enough evading resonance improves the stability of system.
Detailed description of the invention
Fig. 1 is the flow chart of the motor control method of the embodiment of the present invention 1；
Fig. 2 is the implementation environment schematic diagram of 1 motor control method of the embodiment of the present invention；
Fig. 3 is the flow chart of the acquisition vibration parameters of present example 1；
Fig. 4 A is a kind of setting schematic diagram of motor frequency hopping point of the embodiment of the present invention 1；
Fig. 4 B is the setting schematic diagram of another motor frequency hopping point of the embodiment of the present invention 1；
Fig. 5 is the structural block diagram of the motor control assembly of the embodiment of the present invention 2；
Fig. 6 is the structural block diagram of 3 electric machinery control device of the embodiment of the present invention.
Specific embodiment
Example embodiments are described in detail here, and the example is illustrated in the accompanying drawings.Following description is related to
When attached drawing, unless otherwise indicated, the same numbers in different drawings indicate the same or similar elements.Following exemplary embodiment
Described in embodiment do not represent all embodiments consistented with the present invention.On the contrary, they be only with it is such as appended
The example of device and method being described in detail in claims, some aspects of the invention are consistent.
Embodiment 1
A kind of motor control method is present embodiments provided, Fig. 1 is the flow chart of this method, as shown in Figure 1, this method packet
Include following steps:
Step 101: the work frequency of the amplitude for obtaining driven equipment generation corresponding motor when being more than the first default amplitude
Rate range；
Wherein, motor is for driving driven equipment.
Step 102: each set of frequency in the operating frequency range that will acquire is the frequency hopping point of motor；
Step 103: motor being controlled according to the frequency hopping of motor point.
Fig. 2 is the schematic diagram of an exemplary implementation environment of motor control method provided in this embodiment, wherein water pump
It is used as driven equipment in this context, for motor for driving the water pump, acceleration transducer is used to detect the vibration feelings of water pump
Condition, the vibration parameters control frequency converter that controller is detected according to acceleration transducer export the electricity in corresponding frequency feed pump
Machine, to realize the control to variable-frequency motor.
In implementation environment shown in Fig. 2, need to ensure that relevant device has been properly installed first, water route can be manually opened
And water quality is good (low impurity).Confirm that variable frequency pump pipe network system is perfect, it is after blocking or drainage is not present, its is right
The valve opening answered.Related component circuit connection in Fig. 2 is complete, guarantee the unimpeded no virtual connection of route.By controller, water
Pump, motor and acceleration transducer (or displacement sensor) terminal and frequency converter power on, and system detects relevant device automatically
Integrality, and apply for that entering automatic frequency adapts to operational process, system default starts v/f Starting mode (can also adjust according to demand
Whole is vector controlled).The process of vibration parameters is obtained as shown in figure 3, transducer drive water pump is loaded onto power frequency 50hHz, operation
Water pump inertia is controlled after 1min to shut down.In this process, acceleration transducer starts to detect and records the water being connected in pipe network
Pump vibration parameters.The process for obtaining vibration parameters three times can be repeated, the vibration parameters that automatic comparison obtains are automatically derived
Vibrate the range (f1~f2) near maximum several Frequency points (such as f0) and the Frequency point.According to the vibration parameters got,
The setting of motor frequency hopping point is as shown in Figure 4A and 4B, automatic locking frequency section (i.e. above-mentioned operating frequency range) (f1~
F2 all Frequency points in) are the frequency hopping point of motor, and frequency converter output frequency will be skipped automatically when subsequent progress variable frequency adjustment
The section, such as by the direct frequency hopping of f1 to f2.Wherein, | f1-f2 |≤a, a are a settable nonnegative integer, when detecting energy
Enough so that water pump and pipeline generate another operating frequency range (f3~f4) of resonance, which is set in the way of Fig. 4 A
Interior all frequencies are the frequency hopping point of motor, as shown in Figure 4 B.
Since in the actual motion of motor, often there are multiple resonance points in water pump and pipeline, and it is different to change pipe network
Other equipment (for example, other water pumps start or stop) in partial on-off and same system etc. also result in resonance
The change of point.For this kind of situation, it can make motor control method provided in this embodiment that there is self study to resonance point
Ability, to know new resonance point information.Based on this, on the basis of above-mentioned steps 101 to step 103, the present embodiment provides
Motor control method can also include following processing:
During motor operation, the working frequency of amplitude and motor that driven equipment generates periodically is obtained；When
Motor is run with the first working frequency so that the number that the amplitude that driven equipment generates is more than the second default amplitude is more than default
In the case where number, it sets the first working frequency to the frequency hopping point of motor.It can make in this way in motor repeatedly with a frequency
When the vibration that rate point generates when running is bigger than normal, which is identified to and is set as the frequency hopping point of motor.
When the motor working frequency of default is exactly frequency resonance point f, alarm notification can be issued, prompts user
The working frequency, which is arranged, will lead to resonant conditions, it is proposed that user not set the working frequency as motor operation frequency.Such as
Fruit user sets the working frequency by force, then f ± △ f can be obtained according to f so that motor f+ △ f and f- △ f the two
With fixed cycle alternate run between frequency, alt time can be set to t.Wherein 1≤△ f≤3,1min≤t≤5min, △
F and t can be set in value range.If △ f and t would not allow for setting other than default scoping, and popping up that prompting frame shows can
Setting range.Based on the design, method provided in this embodiment may include handling as follows:
Receive the second working frequency of the motor that network side is sent；If the frequency hopping point phase of the second working frequency and motor
Together, then alarm prompt is issued；If receiving the instruction message of the second working frequency of confirmation, after issuing alarm prompt with second
The target operating frequency of motor is determined based on working frequency；Wherein, the target of motor is determined based on the second working frequency
Working frequency may include: to increase preset value on the basis of the second working frequency, obtain the first calibration frequency；In the second work
Preset value is subtracted on the basis of frequency, obtains the second calibration frequency；Control motor with predetermined period with the first calibration frequency and
Second calibration frequency alternate run, wherein target operating frequency is different from the second working frequency.
In addition, the case where working as the vibration frequency range got wide (default section is more than 5Hz), system can be reported automatically
It is alert, prompt resonance range excessive.
It is corresponding to obtain resonance point by the detection to water pump and pipeline resonance point for the motor control method of the present embodiment
Motor operating frequency range sets the range to the frequency hopping point of motor, is controlled according to the frequency hopping point motor, Neng Gougui
The generation for keeping away resonance improves the stability of system.
Embodiment 2
A kind of motor control assembly is present embodiments provided, for the device for realizing aforementioned motor control method, Fig. 5 is this
The structural block diagram of device, as shown in figure 5, the device 50 includes following component part:
First obtain module 51, the module be used for obtain driven equipment generation amplitude be more than the first default amplitude when pair
The operating frequency range for the motor answered, motor is for driving driven equipment；
First setup module 52, each set of frequency in operating frequency range which is used to will acquire are the jump of motor
Frequency point；
Control module 53, the module is for controlling motor according to the frequency hopping point of motor.
The device 50 can also include: the second acquisition module, which is used for during motor operation, periodically obtain
The working frequency of amplitude and motor that driven equipment generates；Second setup module, for when motor is with the first working frequency
In the case where running so that the number that the amplitude that driven equipment generates is more than the second default amplitude is more than preset times, by first
Working frequency is set as the frequency hopping point of motor.
Above-mentioned apparatus 50 can also include: receiving module, the second working frequency of the motor for receiving network side transmission；
If cue module issues alarm prompt identical as the frequency hopping of motor point for the second working frequency；Determining module is used for
If receiving the instruction message of the second working frequency of confirmation after issuing alarm prompt, determined based on the second working frequency
The target operating frequency of motor, wherein target operating frequency is different from the second working frequency.
Wherein it is determined that module can specifically include: first obtains unit, for increasing on the basis of the second working frequency
Preset value obtains the first calibration frequency；Second obtaining unit is obtained for subtracting preset value on the basis of the second working frequency
Obtain the second calibration frequency；Control unit, for controlling motor with predetermined period with the first calibration frequency and the second calibration frequency
Alternate run.
The motor control assembly of the present embodiment obtains the corresponding electricity of resonance point by the detection to water pump and pipeline resonance point
Machine operating frequency range sets the range to the frequency hopping point of motor, is controlled according to the frequency hopping point motor, can be evaded
The generation of resonance improves the stability of system.
Embodiment 3
A kind of electric machinery control device is present embodiments provided, Fig. 6 is the structural block diagram of the equipment, as shown in fig. 6, the equipment
60 include following component part:
Motor 61, vibration detection device 62 and control device 63；
Vibration detection device 62 is used to detect the amplitude of driven equipment generation, and motor 61 is for driving driven equipment；
Control device 63 is used to obtain corresponding motor when the amplitude of driven equipment generation is more than the first default amplitude
Each set of frequency in operating frequency range is the frequency hopping point of motor by operating frequency range；Motor is carried out according to frequency hopping point
Control.
Wherein, motor 61 can be variable-frequency motor, and control device 63 may include processor and/controller.
Wherein, vibration detection device 62 can be set inside motor 61, which can be including position
Detection device or acceleration detecting are moved, specifically can be displacement sensor or acceleration transducer.
Equipment provided in this embodiment obtains the corresponding motor work of resonance point by the detection to water pump and pipeline resonance point
Working frequency range sets the range to the frequency hopping point of motor, is controlled according to the frequency hopping point motor, can evade resonance
Generation, improve the stability of system.
About the device in above-described embodiment, wherein each unit, module execute the concrete mode of operation related
It is described in detail in the embodiment of this method, no detailed explanation will be given here.
Those skilled in the art after considering the specification and implementing the invention disclosed here, will readily occur to of the invention its
Its embodiment.This application is intended to cover any variations, uses, or adaptations of the invention, these modifications, purposes or
The common knowledge in the art that person's adaptive change follows general principle of the invention and do not invent including the present invention
Or conventional techniques.The description and examples are only to be considered as illustrative, and true scope and spirit of the invention are by following
Claim is pointed out.
It should be understood that the present invention is not limited to the precise structure already described above and shown in the accompanying drawings, and
And various modifications and changes may be made without departing from the scope thereof.The scope of the present invention is limited only by the attached claims.
Claims (6)
1. a kind of motor control method characterized by comprising
The operating frequency range of the amplitude for obtaining driven equipment generation corresponding motor when being more than the first default amplitude, the electricity
Machine is for driving the driven equipment；
It is the frequency hopping point of the motor by each set of frequency in the operating frequency range；
The motor is controlled according to the frequency hopping of motor point；
The method also includes:
Receive the second working frequency of the motor that network side is sent；
If second working frequency is identical as the frequency hopping of motor point, alarm prompt is issued；
If receiving the instruction message for confirming second working frequency, after issuing the alarm prompt with second work
The target operating frequency of the motor is determined based on working frequency, the target operating frequency and second working frequency are not
Together；
The target operating frequency that the motor is determined based on second working frequency, comprising:
Increase preset value on the basis of second working frequency, obtains the first calibration frequency；
The preset value is subtracted on the basis of second working frequency, obtains the second calibration frequency；
The motor is controlled with predetermined period with first calibration frequency and the second calibration frequency alternate run.
2. the method according to claim 1, wherein the method also includes:
During the motor operation, the work of amplitude and the motor that the driven equipment generates periodically is obtained
Frequency；
When the motor is run with the first working frequency so that the amplitude that the driven equipment generates is more than the second default amplitude
Number be more than preset times in the case where, set first working frequency to the frequency hopping point of the motor.
3. a kind of motor control assembly characterized by comprising
First obtains module, the work of corresponding motor when being more than the first default amplitude of the amplitude for obtaining driven equipment generation
Working frequency range, the motor is for driving the driven equipment；
First setup module, for being the frequency hopping point of the motor by each set of frequency in the operating frequency range；
Control module, for being controlled according to the frequency hopping point of the motor the motor；
Described device further include:
Receiving module, the second working frequency of the motor for receiving network side transmission；
Cue module issues alarm prompt if identical as the frequency hopping of motor point for second working frequency；
Determining module, if for receiving the instruction message for confirming second working frequency after issuing the alarm prompt,
Then determine the target operating frequency of the motor based on second working frequency, the target operating frequency and described the
Two working frequencies are different；
The determining module, comprising:
First obtains unit obtains the first calibration frequency for increasing preset value on the basis of second working frequency；
Second obtaining unit obtains the second calibration frequency for subtracting the preset value on the basis of second working frequency
Rate；
Control unit, for controlling the motor with predetermined period with first calibration frequency and second calibration frequency
Alternate run.
4. device according to claim 3, which is characterized in that described device further include:
Second obtains module, the amplitude generated for during the motor operation, periodically obtaining the driven equipment
And the working frequency of the motor；
Second setup module, for being run with the first working frequency so that the amplitude that the driven equipment generates when the motor
More than the second default amplitude number be more than preset times in the case where, set the motor for first working frequency
Frequency hopping point.
5. a kind of electric machinery control device, which is characterized in that the equipment includes:
Motor, vibration detection device and control device；
The vibration detection device is used to detect the amplitude of driven equipment generation, and the motor described is set for driving by driving
It is standby；
The control device is used to obtain the work of corresponding motor when the amplitude of driven equipment generation is more than the first default amplitude
Each set of frequency in the operating frequency range is the frequency hopping point of the motor by working frequency range；According to the frequency hopping point
The motor is controlled；It is also used to receive the second working frequency of the motor of network side transmission；If described second
Working frequency is identical as the frequency hopping of motor point, then issues alarm prompt；If received after issuing the alarm prompt really
Recognize the instruction message of second working frequency, then determines the target operation of the motor based on second working frequency
Frequency, the target operating frequency are different from second working frequency；It is described to be determined based on second working frequency
The target operating frequency of the motor, comprising: increase preset value on the basis of second working frequency, obtain the first calibration
Frequency；The preset value is subtracted on the basis of second working frequency, obtains the second calibration frequency；Control the motor with
Predetermined period is with first calibration frequency and the second calibration frequency alternate run.
6. equipment according to claim 5, which is characterized in that the vibration detection device is set to inside the motor,
The vibration detection device includes displacement detector or acceleration detecting.
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| CN201710369067.6A CN107294472B (en) | 2017-05-23 | 2017-05-23 | A kind of motor control method, device and equipment |
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| CN201710369067.6A CN107294472B (en) | 2017-05-23 | 2017-05-23 | A kind of motor control method, device and equipment |
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| CN107294472B true CN107294472B (en) | 2019-05-03 |
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108134556A (en) * | 2017-12-12 | 2018-06-08 | 青岛海尔空调器有限总公司 | The adjusting method and device of motor operation frequency |
| CN108134555A (en) * | 2017-12-12 | 2018-06-08 | 青岛海尔空调器有限总公司 | The adjusting method and device of motor operation frequency |
| CN108134554A (en) * | 2017-12-12 | 2018-06-08 | 青岛海尔空调器有限总公司 | The adjusting method and device of motor operation frequency |
| CN108199628B (en) * | 2017-12-12 | 2020-04-24 | 青岛海尔空调器有限总公司 | Method and device for processing motor resonance noise |
| CN108917085B (en) * | 2018-07-16 | 2020-06-16 | 奥克斯空调股份有限公司 | Air conditioner and control method and control device thereof |
| CN108954654B (en) * | 2018-07-16 | 2021-03-30 | 奥克斯空调股份有限公司 | Air conditioner and control method and control device thereof |
| CN108917121B (en) * | 2018-07-16 | 2020-05-19 | 奥克斯空调股份有限公司 | Air conditioner and control method and control device thereof |
| CN111568107B (en) * | 2019-02-18 | 2022-04-29 | 杨松 | Electric bed and resonance prevention method thereof |
| CN110094451B (en) * | 2019-03-28 | 2020-12-08 | 泉州极简机器人科技有限公司 | Control method and device for avoiding resonance of structural part and computer equipment |
| CN114278547A (en) * | 2021-12-13 | 2022-04-05 | 威乐(中国)水泵系统有限公司 | Resonance suppression method, device and system of electronic control pump system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201629679U (en) * | 2010-02-11 | 2010-11-10 | 大连神通电气有限公司 | Stepless speed-regulating frequency converter of alternating current motor |
| JP5577799B2 (en) * | 2009-04-10 | 2014-08-27 | 株式会社デンソー | In-vehicle motor drive control method |
| CN104344535A (en) * | 2013-08-02 | 2015-02-11 | 广东美的制冷设备有限公司 | Method and device for adaptively adjusting frequency of conditioner motor and air conditioner |
| CN105406793A (en) * | 2015-12-24 | 2016-03-16 | 上海电气富士电机电气技术有限公司 | Device and method for suppressing shaft torsional oscillation |
-
2017
- 2017-05-23 CN CN201710369067.6A patent/CN107294472B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5577799B2 (en) * | 2009-04-10 | 2014-08-27 | 株式会社デンソー | In-vehicle motor drive control method |
| CN201629679U (en) * | 2010-02-11 | 2010-11-10 | 大连神通电气有限公司 | Stepless speed-regulating frequency converter of alternating current motor |
| CN104344535A (en) * | 2013-08-02 | 2015-02-11 | 广东美的制冷设备有限公司 | Method and device for adaptively adjusting frequency of conditioner motor and air conditioner |
| CN105406793A (en) * | 2015-12-24 | 2016-03-16 | 上海电气富士电机电气技术有限公司 | Device and method for suppressing shaft torsional oscillation |
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