CN113517830A - Method for controlling constant suction force of dust collector - Google Patents
Method for controlling constant suction force of dust collector Download PDFInfo
- Publication number
- CN113517830A CN113517830A CN202010810364.1A CN202010810364A CN113517830A CN 113517830 A CN113517830 A CN 113517830A CN 202010810364 A CN202010810364 A CN 202010810364A CN 113517830 A CN113517830 A CN 113517830A
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- China
- Prior art keywords
- motor
- rotating speed
- mcu
- suction force
- pulse signal
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- H02P7/00—Arrangements for regulating or controlling the speed or torque of electric DC motors
- H02P7/06—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current
- H02P7/18—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power
- H02P7/24—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices
- H02P7/28—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices
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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
- H02P29/40—Regulating or controlling the amount of current drawn or delivered by the motor for controlling the mechanical load
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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
- H02P7/00—Arrangements for regulating or controlling the speed or torque of electric DC motors
- H02P7/06—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current
- H02P7/18—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power
- H02P7/24—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices
- H02P7/28—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices
- H02P7/285—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices controlling armature supply only
- H02P7/29—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices controlling armature supply only using pulse modulation
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
- Electric Vacuum Cleaner (AREA)
Abstract
The invention provides a method for controlling constant suction force of a dust collector, which comprises the following steps: 1) setting a driving PWM initial value and a motor rotating speed expected value; 2) the Hall detection circuit monitors the rotating speed of the motor and transmits an obtained pulse signal of the rotating speed of the motor to the MCU; 3) the MCU obtains the actual rotating speed of the motor according to the pulse signal of the rotating speed of the motor; 4) and comparing the actual rotating speed of the motor with the expected rotating speed value of the motor by the MCU, and adjusting the rotating speed of the motor to be the same as the expected rotating speed value of the motor when the actual rotating speed of the motor does not meet the set conditions. The invention provides a method for controlling the constant suction force of a dust collector, which uses a Hall sensor to detect the rotating speed of a motor, and controls the constant rotating speed of the motor by adjusting the driving duty ratio of the motor according to the detected rotating speed, thereby achieving the purpose of controlling the constant suction force.
Description
Technical Field
The invention relates to the field of suction control of dust collectors, in particular to a constant suction control method of a dust collector.
Background
A vacuum cleaner is a cleaning tool with wide application. The working principle of the dust collector is that a motor is used for driving blades to rotate at a high speed, air negative pressure is generated in a sealed bracket, and dust is sucked.
The electric quantity of the battery core of the lithium battery dust collector product can be gradually reduced in the using process, the voltage at the two ends of the motor can be reduced along with the reduction of the electric quantity of the battery core, the rotating speed of the motor is reduced, and the suction force of the motor is directly reduced. As the service time of the dust collector increases, the suction force of the motor is smaller and smaller.
Disclosure of Invention
In view of the above, the invention provides a method for controlling the constant suction force of a dust collector, which solves the problem that the electric quantity of a battery core of the dust collector is reduced to reduce the suction force of a motor.
Therefore, the invention provides a method for controlling the constant suction force of a dust collector, which comprises the following steps:
1) setting a driving PWM initial value and a motor rotating speed expected value;
2) the Hall detection circuit monitors the rotating speed of the motor and transmits an obtained pulse signal of the rotating speed of the motor to the MCU;
3) the MCU obtains the actual rotating speed of the motor according to the pulse signal of the rotating speed of the motor;
4) and comparing the actual rotating speed of the motor with the expected rotating speed value of the motor by the MCU, and adjusting the rotating speed of the motor to be the same as the expected rotating speed value of the motor when the actual rotating speed of the motor does not meet the set conditions.
Further, in step 2), the hall detection circuit includes a hall sensor, a magnetic pole is embedded in the motor spindle, and the motor spindle drives the magnetic pole to rotate together when the motor rotates, so as to trigger the hall sensor in the hall detection circuit to generate a pulse signal.
Furthermore, the magnetic pole is sleeved at the front end of the motor spindle in a circular ring shape.
Further, in step 2), the pulse signal is processed by a signal processing circuit of the hall detection circuit to obtain a pulse signal which can be detected by the MCU, and then transmitted to the MCU.
Further, in the step 3), the MCU calculates the actual rotation speed of the motor according to the frequency of the pulse signal.
Further, in step 4), the MCU changes the rotation speed of the motor by adjusting the driving PWM duty ratio.
Further, in step 4), the MCU determines whether the actual rotation speed of the motor is within the range of the allowable variation, and if the actual rotation speed of the motor is beyond the range of the allowable variation, the duty ratio of the driving PWM is adjusted to change the rotation speed of the motor.
In the method for controlling the constant suction force of the dust collector, the method for detecting the rotating speed of the motor comprises the following steps: the magnetic pole is embedded in the front end of the motor spindle, the motor drives the magnetic pole to rotate when rotating, the Hall sensor element fixed on the side edge of the disc-shaped magnetic pole is triggered to generate a pulse signal, the signal is processed by the signal processing circuit to obtain the pulse signal which can be detected by the MCU, and the MCU calculates the frequency of the pulse to measure the rotating speed information of the motor. The control method of the motor rotating speed comprises the following steps: the MCU controls the motor through the PWM driving circuit, adjusts the duty ratio of PWM and changes the rotating speed of the motor.
In order to realize the constant speed control of the motor, a constant speed initial value and a driving PWM initial value of the motor are set, the rotating speed of the motor is reduced along with the reduction of the electric quantity of a battery cell, the duty ratio of the driving PWM is adjusted according to the rotating speed of the motor detected by a Hall detection circuit, the rotating speed is adjusted to be the same as the set initial value, the rotating speed of the motor is kept constant, and the suction force of the motor is kept constant. Under the same condition, the motor rotation speed is constant, and then the suction force of the motor is constant, so that the constant suction force control of the dust collector is realized.
The invention provides a method for controlling the constant suction force of a dust collector, which uses a Hall sensor to detect the rotating speed of a motor, and controls the constant rotating speed of the motor by adjusting the driving duty ratio of the motor according to the detected rotating speed, thereby achieving the purpose of controlling the constant suction force.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
fig. 1 is an overall structure of a motor control circuit in a method for controlling a constant suction force of a vacuum cleaner according to an embodiment of the present invention;
FIG. 2 is a flow chart of a method for controlling a constant suction force of a vacuum cleaner according to an embodiment of the present invention;
fig. 3 is a schematic diagram of the working principle of a hall detection circuit in the method for controlling the constant suction force of the vacuum cleaner according to the embodiment of the present invention.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
The first embodiment is as follows:
referring to fig. 1 to 3, a method for controlling a constant suction force of a vacuum cleaner according to a first embodiment of the present invention is shown, including the following steps:
1) setting a driving PWM initial value and a motor rotating speed expected value;
2) the Hall detection circuit monitors the rotating speed of the motor and transmits an obtained pulse signal of the rotating speed of the motor to the MCU;
3) the MCU obtains the actual rotating speed of the motor according to the pulse signal of the rotating speed of the motor;
4) and comparing the actual rotating speed of the motor with the expected rotating speed value of the motor by the MCU, and adjusting the rotating speed of the motor to be the same as the expected rotating speed value of the motor when the actual rotating speed of the motor does not meet the set conditions.
Specifically, referring to fig. 1 to 3, in step 2), the hall detection circuit includes a hall sensor, a magnetic pole is embedded in the motor spindle, and the motor spindle drives the magnetic pole to rotate together when the motor rotates, so as to trigger the hall sensor in the hall detection circuit to generate a pulse signal.
Specifically, referring to fig. 1 to 3, the magnetic pole is annularly sleeved at the front end of the motor spindle.
Specifically, referring to fig. 1 to 3, in step 2), the pulse signal is processed by a signal processing circuit of the hall detection circuit to obtain a pulse signal detectable by the MCU, and then transmitted to the MCU.
Specifically, referring to fig. 1 to 3, in the step 3), the MCU calculates the actual rotation speed of the motor according to the frequency of the pulse signal.
Specifically, referring to fig. 1 to 3, in step 4), the MCU changes the rotation speed of the motor by adjusting the driving PWM duty ratio.
Specifically, referring to fig. 1 to 3, in step 4), the MCU determines whether the actual rotation speed of the motor is within the allowable variation range, and if the actual rotation speed of the motor is beyond the allowable variation range, the driving PWM duty ratio is adjusted to change the rotation speed of the motor.
In the method for controlling the constant suction force of the dust collector, the method for detecting the rotating speed of the motor comprises the following steps: the magnetic pole is embedded in the front end of the motor spindle, the motor drives the magnetic pole to rotate when rotating, the Hall sensor element fixed on the side edge of the disc-shaped magnetic pole is triggered to generate a pulse signal, the signal is processed by the signal processing circuit to obtain the pulse signal which can be detected by the MCU, and the MCU calculates the frequency of the pulse to measure the rotating speed information of the motor. The control method of the motor rotating speed comprises the following steps: the MCU controls the motor through the PWM driving circuit, adjusts the duty ratio of PWM and changes the rotating speed of the motor.
In order to realize the constant speed control of the motor, a constant speed initial value and a driving PWM initial value of the motor are set, the rotating speed of the motor is reduced along with the reduction of the electric quantity of a battery cell, the duty ratio of the driving PWM is adjusted according to the rotating speed of the motor detected by a Hall detection circuit, the rotating speed is adjusted to be the same as the set initial value, the rotating speed of the motor is kept constant, and the suction force of the motor is kept constant. Under the same condition, the motor rotation speed is constant, and then the suction force of the motor is constant, so that the constant suction force control of the dust collector is realized.
The invention provides a method for controlling the constant suction force of a dust collector, which uses a Hall sensor to detect the rotating speed of a motor, and controls the constant rotating speed of the motor by adjusting the driving duty ratio of the motor according to the detected rotating speed, thereby achieving the purpose of controlling the constant suction force.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (7)
1. A method for controlling constant suction force of a dust collector is characterized by comprising the following steps:
1) setting a driving PWM initial value and a motor rotating speed expected value;
2) the Hall detection circuit monitors the rotating speed of the motor and transmits an obtained pulse signal of the rotating speed of the motor to the MCU;
3) the MCU obtains the actual rotating speed of the motor according to the pulse signal of the rotating speed of the motor;
4) and comparing the actual rotating speed of the motor with the expected rotating speed value of the motor by the MCU, and adjusting the rotating speed of the motor to be the same as the expected rotating speed value of the motor when the actual rotating speed of the motor does not meet the set conditions.
2. The method for controlling constant suction force of a vacuum cleaner as claimed in claim 1, wherein in the step 2), the hall detection circuit comprises a hall sensor, a magnetic pole is embedded in the motor spindle, and the motor spindle drives the magnetic pole to rotate together when the motor rotates, so as to trigger the hall sensor in the hall detection circuit to generate a pulse signal.
3. The method for controlling the constant suction force of the dust collector according to claim 2, wherein the magnetic pole is annularly sleeved at the front end of the motor spindle.
4. The method for controlling constant suction force of a vacuum cleaner as claimed in claim 2, wherein in the step 2), the pulse signal is processed by the signal processing circuit of the hall detection circuit to obtain a pulse signal which can be detected by the MCU, and then transmitted to the MCU.
5. The method for controlling constant suction force of vacuum cleaner as claimed in claim 3, wherein in said step 3), the MCU calculates the actual rotation speed of the motor according to the frequency of the pulse signal.
6. The constant suction control method of a vacuum cleaner as claimed in claim 1, wherein in the step 4), the MCU changes the rotation speed of the motor by adjusting the driving PWM duty ratio.
7. The method for controlling constant suction force of vacuum cleaner according to claim 6, wherein in the step 4), the MCU determines whether the actual rotation speed of the motor is within the set allowable variation range, and if the actual rotation speed of the motor is beyond the allowable variation range, the PWM duty ratio is adjusted to change the rotation speed of the motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010810364.1A CN113517830A (en) | 2020-08-14 | 2020-08-14 | Method for controlling constant suction force of dust collector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010810364.1A CN113517830A (en) | 2020-08-14 | 2020-08-14 | Method for controlling constant suction force of dust collector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113517830A true CN113517830A (en) | 2021-10-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010810364.1A Pending CN113517830A (en) | 2020-08-14 | 2020-08-14 | Method for controlling constant suction force of dust collector |
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| Country | Link |
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| CN (1) | CN113517830A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2045913U (en) * | 1989-04-21 | 1989-10-11 | 卢明 | Energy-saving speed regulator for direct-current dynamo |
| CN1064773A (en) * | 1992-04-07 | 1992-09-23 | 张才良 | The dc motor drive of Alternating Current Power Supply |
| CN101867338A (en) * | 2010-05-19 | 2010-10-20 | 南京德朔实业有限公司 | Speed control system of brush cutter and control method thereof |
| WO2011095013A1 (en) * | 2010-02-04 | 2011-08-11 | Li Hongqi | Speed settting controller for dc motor |
-
2020
- 2020-08-14 CN CN202010810364.1A patent/CN113517830A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2045913U (en) * | 1989-04-21 | 1989-10-11 | 卢明 | Energy-saving speed regulator for direct-current dynamo |
| CN1064773A (en) * | 1992-04-07 | 1992-09-23 | 张才良 | The dc motor drive of Alternating Current Power Supply |
| WO2011095013A1 (en) * | 2010-02-04 | 2011-08-11 | Li Hongqi | Speed settting controller for dc motor |
| CN101867338A (en) * | 2010-05-19 | 2010-10-20 | 南京德朔实业有限公司 | Speed control system of brush cutter and control method thereof |
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