CN108832852B - Interference control method, device, purifying equipment and computer readable storage medium - Google Patents
Interference control method, device, purifying equipment and computer readable storage medium Download PDFInfo
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- CN108832852B CN108832852B CN201810647920.0A CN201810647920A CN108832852B CN 108832852 B CN108832852 B CN 108832852B CN 201810647920 A CN201810647920 A CN 201810647920A CN 108832852 B CN108832852 B CN 108832852B
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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
- H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/0039—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with flow guiding by feed or discharge devices
- B01D46/0041—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with flow guiding by feed or discharge devices for feeding
- B01D46/0045—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with flow guiding by feed or discharge devices for feeding by using vanes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/42—Auxiliary equipment or operation thereof
- B01D46/4245—Means for power supply or devices using electrical power in filters or filter elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/42—Auxiliary equipment or operation thereof
- B01D46/44—Auxiliary equipment or operation thereof controlling filtration
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
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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
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
- F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
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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
- H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
- H02P6/06—Arrangements for speed regulation of a single motor wherein the motor speed is measured and compared with a given physical value so as to adjust the motor speed
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Abstract
The invention discloses an interference control method, which comprises the following steps: acquiring a feedback signal; adjusting the input voltage of the motor; judging whether the feedback signal is an interference signal or not according to the feedback signal change before and after the motor adjusts the input voltage and the input voltage adjusting direction; if yes, the control end of the motor is controlled to input the critical voltage. The invention also discloses an interference control device, a purification device and a computer readable storage medium. According to the technical scheme, the motor judges the feedback signal in the process of regulating the input voltage of the motor according to the acquired feedback signal, and if the feedback signal is judged to be an interference signal, the input critical voltage of the control end of the motor is kept, so that the motor can still be guaranteed to run at the critical voltage even in an interference environment, and the motor is prevented from stopping running.
Description
Technical Field
The invention relates to the field of motors, in particular to an interference control method, an interference control device, a purifying device and a computer readable storage medium.
Background
In the prior art, a brushless direct current motor with hall feedback is generally divided into an internal direct current drive and an external direct current drive, and under the condition of no interference from the outside, the motor can stably operate, and the air speed blown out by the whole machine is relatively stable. However, in the process of performing a pulse group interference experiment, when the interference signal is too frequent, the feedback signal of the motor may be interfered and inaccurate, so that the motor may stop operating during operation, thereby affecting the use of the motor.
Disclosure of Invention
The invention mainly aims to provide an interference control method, aiming at solving the technical problem that the motor can stop running when being interfered.
In order to achieve the above object, the present invention provides an interference control method, including:
acquiring a feedback signal;
adjusting the input voltage of the motor;
judging whether the feedback signal is an interference signal or not according to the feedback signal change before and after the motor adjusts the input voltage and the input voltage adjusting direction;
if yes, the control end of the motor is controlled to input the critical voltage.
Preferably, the step of judging whether the feedback signal is an interference signal according to the feedback signal change before and after the motor adjusts the input voltage and the input voltage adjusting direction includes:
and if the change direction of the feedback signal before and after the motor is adjusted is not consistent with the adjustment direction of the input voltage of the motor, judging the feedback signal as an interference signal.
Preferably, the step of adjusting the input voltage of the motor comprises:
converting the feedback signal into an actual rotating speed, and comparing the actual rotating speed with a target rotating speed;
if the actual rotating speed is greater than the target rotating speed, adjusting the input voltage of the motor to be reduced;
if the actual rotating speed is less than the target rotating speed, adjusting the input voltage of the motor to be increased;
when the actual rotating speed is greater than the target rotating speed, and the input voltage of the motor is adjusted to be reduced, the step that the changing direction of the feedback signal before and after the motor adjusts the input voltage is inconsistent with the adjusting direction of the input voltage of the motor comprises the following steps:
the actual rotating speed of the motor after being adjusted is not less than the actual rotating speed of the motor at the last moment.
Preferably, when the actual rotating speed is greater than the target rotating speed, the input voltage of the motor is adjusted to be reduced;
the step of inputting the critical voltage to the control end of the control motor comprises the following steps:
judging whether the input voltage of the motor is greater than the starting voltage or not;
if not, the control end of the motor is controlled to input starting voltage and keep unchanged.
Preferably, when the actual rotating speed is less than the target rotating speed, the input voltage of the motor is adjusted to be increased;
the step of inputting the critical voltage to the control end of the control motor comprises the following steps:
judging whether the input voltage of the motor is less than the maximum voltage or not;
if not, the control end of the control motor inputs the maximum voltage and keeps unchanged.
Preferably, the step of acquiring the feedback signal comprises:
and acquiring the PWM signal period of the feedback end of the motor.
Preferably, the step of adjusting the input voltage of the motor comprises:
and adjusting the effective voltage of the PWM driving signal at the control end of the motor.
The present invention also provides an interference control apparatus, including: a memory, a processor and a computer program stored on the memory and executable on the processor, the computer program when executed by the processor implementing the steps of an interference control method comprising the steps of:
acquiring a feedback signal;
adjusting the input voltage of the motor;
judging whether the feedback signal is an interference signal or not according to the feedback signal change before and after the motor adjusts the input voltage and the input voltage adjusting direction;
if yes, the control end of the motor is controlled to input the critical voltage.
The invention also proposes a purification device comprising an interference control device comprising: a memory, a processor and a computer program stored on the memory and executable on the processor, the computer program when executed by the processor implementing the steps of an interference control method comprising the steps of:
acquiring a feedback signal;
adjusting the input voltage of the motor;
judging whether the feedback signal is an interference signal or not according to the feedback signal change before and after the motor adjusts the input voltage and the input voltage adjusting direction;
if yes, the control end of the motor is controlled to input the critical voltage.
The present invention also provides a computer-readable storage medium having an interference control program stored thereon, the interference control program, when executed by a processor, implementing the steps of an interference control method, the interference control method comprising the steps of:
acquiring a feedback signal;
adjusting the input voltage of the motor;
judging whether the feedback signal is an interference signal or not according to the feedback signal change before and after the motor adjusts the input voltage and the input voltage adjusting direction;
if yes, the control end of the motor is controlled to input the critical voltage.
According to the technical scheme, the motor judges the feedback signal in the process of regulating the input voltage of the motor according to the acquired feedback signal, and if the feedback signal is judged to be an interference signal, the input critical voltage of the control end of the motor is kept, so that the motor can still be guaranteed to run at the critical voltage even in an interference environment, and the motor is prevented from stopping running.
Drawings
Fig. 1 is a flowchart illustrating an interference control method according to an embodiment of the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The main solution of the embodiment of the invention is as follows: the interference control method is mainly applied to speed regulation of a motor in an interference environment and comprises the following steps:
acquiring a feedback signal;
adjusting the input voltage of the motor;
judging whether the feedback signal is an interference signal or not according to the feedback signal change before and after the motor adjusts the input voltage and the input voltage adjusting direction;
if yes, the control end of the motor is controlled to input the critical voltage.
In the prior art, the brushless direct current motor with the Hall feedback can adjust the rotating speed of the brushless direct current motor according to the feedback signal of the feedback end, so that the motor can keep a stable running state. The adjusting process specifically comprises the following steps: acquiring a feedback signal of a feedback end, converting the feedback signal into an actual rotating speed which can be used for comparison, and comparing the actual rotating speed with a target rotating speed; if the actual rotating speed is greater than the target rotating speed, reducing the input voltage of the motor control end, so that the rotating speed of the motor is reduced; and if the actual rotating speed is less than the target rotating speed, increasing the input voltage of the motor control end so as to increase the rotating speed of the motor. Therefore, the actual rotating speed is always kept unchanged within the target rotating speed range in the running process of the motor, and the running state of the motor is kept stable.
However, when the motor is used in a test pulse burst interference laboratory, the interference signal is too frequent, so that the obtained feedback signal of the feedback end of the motor is interfered and inaccurate, and the actual rotating speed obtained according to the feedback signal is not the actual rotating speed of the motor in the operation process, so that the actual rotating speed of the motor is abnormal by adjusting the input voltage of the motor according to the feedback signal, and the motor stops operating or other conditions of unstable operation are caused.
The invention provides a solution, which is characterized in that a feedback signal is judged in the process of regulating the input voltage of a motor according to the obtained feedback signal, if the feedback signal is judged to be an interference signal, the input critical voltage of a control end of the motor is kept, so that the motor can still run at the critical voltage even in an interference environment, and the condition that the motor stops running is prevented.
In the technical scheme of the invention, the step of judging whether the feedback signal is an interference signal according to the feedback signal change before and after the motor adjusts the input voltage and the input voltage adjusting direction comprises the following steps:
and if the change direction of the feedback signal before and after the motor is adjusted is not consistent with the adjustment direction of the input voltage of the motor, judging the feedback signal as an interference signal.
If the feedback signal is normal, that is, the feedback signal can reflect the real rotation speed of the motor, the changing direction of the feedback signal before and after the motor adjustment should be consistent with the adjustment direction of the input voltage of the motor, that is, if the input voltage of the adjustment motor is reduced, the actual rotation speed corresponding to the feedback signal detected by the feedback end should be reduced, and if the actual rotation speed is inconsistent, the feedback signal is an interference signal. And adjusting the input voltage of the motor according to the feedback signal causes the rotating speed of the motor to be abnormal.
In order to judge the feedback signal more accurately, the step of judging whether the feedback signal is an interference signal according to the feedback signal change before and after the motor adjusts the input voltage and the input voltage adjusting direction may further include:
adjusting the input voltage of the motor for multiple times, adjusting according to a preset voltage value every time, comparing feedback signals before and after the motor is adjusted for multiple times, judging whether the change direction of the feedback signals in the comparison result of each time is consistent with the adjustment direction of the input voltage of the corresponding motor, and judging that the feedback signals are interference signals if the change direction of the feedback signals is not consistent with the adjustment direction of the input voltage of the corresponding motor, or judging that the feedback signals are inconsistent if the change direction of the feedback signals is inconsistent with the adjustment direction of the input voltage of the corresponding motor once.
The specific steps of regulating the input voltage of the motor include:
converting the feedback signal into an actual rotating speed, and comparing the actual rotating speed with a target rotating speed;
if the actual rotating speed is greater than the target rotating speed, adjusting the input voltage of the motor to be reduced;
if the actual rotating speed is less than the target rotating speed, adjusting the input voltage of the motor to be increased;
when the actual rotating speed is greater than the target rotating speed, and the input voltage of the motor is adjusted to be reduced, the step that the changing direction of the feedback signal before and after the motor adjusts the input voltage is inconsistent with the adjusting direction of the input voltage of the motor comprises the following steps:
the actual rotating speed after the motor is adjusted is not less than the actual rotating speed before the motor is adjusted.
When the actual rotating speed is smaller than the target rotating speed, and the input voltage of the motor is adjusted to be increased, the step that the changing direction of the feedback signal before and after the motor adjusts the input voltage is inconsistent with the adjusting direction of the input voltage of the motor comprises the following steps:
the actual rotating speed after the motor is adjusted is not greater than the actual rotating speed before the motor is adjusted.
And acquiring a feedback signal of a feedback end of the motor, wherein the feedback signal is a signal period of a PWM (Pulse Width Modulation) signal of the feedback end. When the signal period of the PWM signal detected by the feedback end is larger, the rotating speed of the motor is represented to be smaller, the signal period of the PWM signal is smaller, and the rotating speed of the motor is represented to be larger. When the feedback signal is the signal period of the PWM signal at the feedback end, the signal period of the obtained PWM signal is inversely proportional to the actual rotating speed obtained by calculation.
The target rotating speed is a set rotating speed which is preset in a program or can be adjusted according to needs in the running process, and is also a real rotating speed which can be achieved by the actual expected motor.
The input voltage of the regulating motor is specifically the effective voltage of the PWM driving signal of the control end of the regulating motor. Specifically, the effective voltage of the PWM driving signal may be adjusted by changing the pulse width of the PWM driving signal.
In the process of judging whether the feedback signal is an interference signal, directly comparing the signal period of the PWM signal of the feedback end obtained after the input voltage is regulated by the motor with the signal period of the PWM signal of the feedback end obtained before the input voltage is regulated by the motor, and if the signal period of the PWM signal after the input voltage is regulated by the motor is larger than the signal period of the PWM signal before the input voltage is regulated by the motor, judging that the actual rotating speed of the motor fed back by the feedback end after the input voltage is regulated by the motor is smaller than the actual rotating speed of the motor fed back by the feedback end before the input voltage is regulated by the motor; and if the PWM signal period after the input voltage is regulated by the motor is smaller than the PWM signal period before the input voltage is regulated by the motor, judging that the actual rotating speed of the motor after the input voltage is regulated by the motor is larger than the actual rotating speed of the motor before the input voltage is regulated by the motor.
It can be understood that, the signal period of the PWM signal of the feedback segment obtained may also be directly converted into the actual rotation speed, and the actual rotation speed after the motor is adjusted may be compared.
In the embodiment of the invention, if the feedback signal of the motor is judged to be the interference signal, when the actual rotating speed is greater than the target rotating speed, the input voltage of the motor is adjusted to be reduced;
the step of inputting the critical voltage to the control end of the control motor comprises the following steps:
judging whether the input voltage of the motor is greater than the starting voltage or not;
if not, the control end of the motor is controlled to input starting voltage and keep unchanged.
If the feedback signal is an interference signal, and the input voltage of the motor is always controlled to be reduced in the process of regulating the input voltage of the motor according to the feedback signal, once the input voltage is reduced to be smaller than the starting voltage of the motor, the motor can stop running, and in order to prevent the motor from stopping running, at the moment, the interference control method compares the input voltage with the starting voltage of the motor, judges whether the input voltage of the motor is larger than the starting voltage or not, and runs according to the input voltage if the input voltage is larger than the starting voltage; if not, maintaining the input voltage of the motor as the starting voltage and keeping the input voltage unchanged. The starting voltage is the minimum limit voltage for the motor to operate, and the motor is maintained to operate at the minimum voltage in the process, so that the motor can be prevented from stopping operating due to the fact that the input voltage of the motor is too low.
On the contrary, if the feedback signal is an interference signal and the input voltage of the motor is controlled to rise all the time in the process of adjusting the input voltage of the motor according to the feedback signal, once the input voltage rises to a limit value, the motor may be damaged or the motor stops running, at the moment, the input voltage is compared with the maximum voltage of the motor, and whether the input voltage of the motor is smaller than the maximum voltage at the moment is judged; if the voltage is less than the preset voltage, the motor is maintained to operate at the input voltage; and if not, controlling the input voltage of the control end of the motor to be the maximum voltage and keeping the input voltage unchanged. The maximum voltage is the maximum limit voltage value allowed during the operation of the motor.
The interference control method ensures that the motor can be operated between the minimum limit voltage and the maximum limit voltage even in the environment with frequent interference, and prevents the motor from being stopped or damaged.
Referring to fig. 1, a specific embodiment of the technical solution of the present invention is shown, in which an interference control method includes the following steps:
s10: acquiring a signal period of a PWM signal at a feedback end of a motor;
s20: converting the signal period of the PWM signal into the actual rotating speed of the motor;
s30: comparing the actual rotation speed obtained in step S20 with the target rotation speed;
s40: judging whether the actual rotation speed in step S30 is greater than the target rotation speed;
s50: if so, reducing the effective voltage of the PWM driving signal of the control end of the regulating motor;
s60: acquiring a signal period of a PWM signal of a motor feedback end after the motor adjusts the input voltage;
s70: comparing the signal period of the PWM signal in step S60 with the signal period of the PWM signal in step S10;
s80: judging whether the signal period of the PWM signal in step S60 is greater than the signal period of the PWM signal in step S10;
s90: if not, judging that the PWM signal of the motor feedback end is an interference signal;
s100: judging whether the effective voltage of a PWM driving signal at the control end of the motor is greater than a starting voltage or not;
s110: if not, the input voltage of the control end of the motor is controlled to be the starting voltage and is kept unchanged.
The present invention also provides an interference control apparatus, including: a memory, a processor and a computer program stored on the memory and executable on the processor, which computer program, when executed by the processor, carries out the steps of the interference control method as described above.
The processor of the interference control device according to the embodiment of the present invention may be a CPU, the interference control device further includes a communication bus, the communication bus is used to implement connection communication between these components, the interference control device may further include a user interface, the user interface may include a Display screen (Display), an input unit such as a Keyboard (Keyboard), and the selectable user interface may further include a standard wired interface and a standard wireless interface. The network interface may optionally include a standard wired interface, a wireless interface (e.g., WI-FI interface). The memory may be a high-speed RAM memory or a non-volatile memory, such as a disk memory. The memory may alternatively be a storage device separate from the aforementioned processor.
Specifically, the anti-interference control device can be a motor, and a program for operating the anti-interference control method is stored in the motor, so that a good operation effect can be ensured even if the motor is in an occasion with frequent interference in the operation process.
The invention also protects a purification device comprising the above-mentioned interference control device. Clarification plant still includes casing and filtration, be formed with the wind channel in the casing, and set up the air intake and the air outlet in intercommunication wind channel, filtration is located this wind channel, this clarification plant embodiment, interference control device specifically is the drive structure who is located the wind channel, the drive structure includes the fan of connecting on motor and the motor, the motor starts and drives the fan rotation, thereby drive external air by in the air intake gets into the wind channel, blow off by the air outlet after filtering structure filters, this purification structure can be ordinary filter screen, high efficiency filter screen or PM2.5 processing module, still can be for having electrostatic absorption's purification module, or still can be for the structure that a plurality of purification structures above combine together. Understandably, the purification structure can be any purification structure used in a purifier in the prior art, and can achieve a better air purification effect, so that the air purification degree of the air outlet can be high.
Further, the purification device can also comprise a humidifying device or an auxiliary purification device, and the auxiliary purification device can be an anion generator, so that the air blown out from the air outlet has a better sterilization effect.
The purification equipment applying the interference control device can well operate under the condition of frequent interference signals, and the condition of shutdown caused by the influence of the interference signals is avoided.
The invention also proposes a computer-readable storage medium having stored thereon an interference control program which, when executed by a processor, implements the steps of the interference control method described above.
The interference control device in the technical solution of the present invention has the computer-readable storage medium, and executes the interference control method by running the program in the computer-readable storage medium.
The computer readable storage medium may be stored in a memory of the interference control device or may be communicatively coupled to the memory of the interference control device.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium (e.g., ROM/RAM, magnetic disk, optical disk) as described above and includes instructions for enabling a terminal device (e.g., a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (8)
1. An interference control method, characterized in that the interference control method comprises the steps of:
acquiring a feedback signal;
adjusting the input voltage of the motor;
judging whether the feedback signal is an interference signal or not according to the feedback signal change before and after the motor adjusts the input voltage and the input voltage adjusting direction; if the change direction of the feedback signal before and after the motor is adjusted is not consistent with the adjustment direction of the input voltage of the motor, judging the feedback signal as an interference signal; when the interference signal is judged, comparing the input voltage of the motor with the starting voltage or the maximum voltage according to different conditions of the actual rotating speed, and controlling the input critical voltage of the motor when the input voltage is smaller than the starting voltage or larger than the maximum voltage;
the step of adjusting the input voltage of the motor includes:
converting the feedback signal into an actual rotating speed, and comparing the actual rotating speed with a target rotating speed;
if the actual rotating speed is greater than the target rotating speed, adjusting the input voltage of the motor to be reduced;
if the actual rotating speed is less than the target rotating speed, adjusting the input voltage of the motor to be increased;
when the actual rotating speed is greater than the target rotating speed, and the input voltage of the motor is adjusted to be reduced, the step that the changing direction of the feedback signal before and after the motor adjusts the input voltage is inconsistent with the adjusting direction of the input voltage of the motor comprises the following steps:
the actual rotating speed of the motor after being adjusted is not less than the actual rotating speed of the motor at the last moment.
2. The disturbance control method according to claim 1, wherein when the actual rotation speed is greater than the target rotation speed, the input voltage of the motor is adjusted to be decreased;
the step of inputting the critical voltage to the control end of the control motor comprises the following steps:
judging whether the input voltage of the motor is greater than the starting voltage or not;
if not, the control end of the motor is controlled to input starting voltage and keep unchanged.
3. The disturbance control method according to claim 1, wherein when the actual rotation speed is less than the target rotation speed, the input voltage of the motor is adjusted to be increased;
the step of inputting the critical voltage to the control end of the control motor comprises the following steps:
judging whether the input voltage of the motor is less than the maximum voltage or not;
if not, the control end of the control motor inputs the maximum voltage and keeps unchanged.
4. The interference control method of claim 1, wherein the step of obtaining a feedback signal comprises:
and acquiring the PWM signal period of the feedback end of the motor.
5. The interference control method of claim 1 wherein said step of adjusting the input voltage of the motor comprises:
and adjusting the effective voltage of the PWM driving signal at the control end of the motor.
6. An interference control apparatus, characterized in that the interference control apparatus comprises: memory, processor and computer program stored on the memory and executable on the processor, which computer program, when executed by the processor, carries out the steps of the interference control method according to any one of claims 1 to 5.
7. A purifying device, comprising a housing and the interference control device of claim 6, wherein an air duct is formed in the housing, the housing has an air inlet and an air outlet which are communicated with the air duct, the interference control device is a driving structure located in the air duct, and the purifying device further comprises a purifying structure located in the air duct;
the driving structure drives outside air to enter the air channel from the air inlet, and the outside air flows through the purification structure and is blown out from the air outlet.
8. A computer-readable storage medium, characterized in that the computer-readable storage medium has stored thereon an interference control program which, when executed by a processor, implements the steps of the interference control method according to any one of claims 1 to 5.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000341999A (en) * | 1999-05-28 | 2000-12-08 | Yaskawa Electric Corp | Identification of constant for synchronous motor |
| CN101086475A (en) * | 2006-06-09 | 2007-12-12 | 深圳迈瑞生物医疗电子股份有限公司 | Air measuring device with rotation speed automatic control function and air measuring method |
| CN105841295A (en) * | 2016-03-28 | 2016-08-10 | 海信（山东）空调有限公司 | Filter screen service life detecting method and device |
| CN107202957A (en) * | 2017-06-05 | 2017-09-26 | 广东美的暖通设备有限公司 | Interference identification method, disturbance ecology system and motor |
| CN107255351A (en) * | 2017-06-28 | 2017-10-17 | 广东美的暖通设备有限公司 | Rotation speed of fan control method, rotation speed of fan control system and air-conditioning |
-
2018
- 2018-06-21 CN CN201810647920.0A patent/CN108832852B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000341999A (en) * | 1999-05-28 | 2000-12-08 | Yaskawa Electric Corp | Identification of constant for synchronous motor |
| CN101086475A (en) * | 2006-06-09 | 2007-12-12 | 深圳迈瑞生物医疗电子股份有限公司 | Air measuring device with rotation speed automatic control function and air measuring method |
| CN105841295A (en) * | 2016-03-28 | 2016-08-10 | 海信（山东）空调有限公司 | Filter screen service life detecting method and device |
| CN107202957A (en) * | 2017-06-05 | 2017-09-26 | 广东美的暖通设备有限公司 | Interference identification method, disturbance ecology system and motor |
| CN107255351A (en) * | 2017-06-28 | 2017-10-17 | 广东美的暖通设备有限公司 | Rotation speed of fan control method, rotation speed of fan control system and air-conditioning |
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|---|---|
| CN108832852A (en) | 2018-11-16 |
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