CN115395828A - Speed regulation method and system for brushless direct current motor and motor driving equipment - Google Patents
Speed regulation method and system for brushless direct current motor and motor driving equipment Download PDFInfo
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- CN115395828A CN115395828A CN202211001284.7A CN202211001284A CN115395828A CN 115395828 A CN115395828 A CN 115395828A CN 202211001284 A CN202211001284 A CN 202211001284A CN 115395828 A CN115395828 A CN 115395828A
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- 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
- H02P6/08—Arrangements for controlling the speed or torque of a single motor
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Abstract
The invention discloses a speed regulation method, a system and a motor driving device of a direct current brushless motor, wherein the method comprises the following steps: judging whether the motor enters a closed-loop control mode or not; if the motor enters a closed-loop control mode, judging whether the target rotating speed is in a maximum adjustable rotating speed range; when the target rotating speed exceeds the maximum adjustable range, adjusting the upper limit rotating speed and the lower limit rotating speed of the motor by adjusting the input voltage of the motor; and when the target rotating speed is within the maximum adjustable rotating speed range, adjusting the rotating speed of the motor within the maximum adjustable rotating speed range of the motor. The invention can enlarge the speed regulation range of the motor by regulating the input voltage of the motor, thereby being suitable for the control situations of high input power and high rotating speed.
Description
Technical Field
The invention relates to the technical field of control of direct current brushless motors, in particular to a speed regulation method and system of a direct current brushless motor and motor driving equipment.
Background
With the development of microprocessor and high-frequency power device technologies and the continuous progress of motor driving control methods, the dc brushless motor is widely applied in the fields of household appliances, electric vehicles, electric tools, industrial machinery, etc. with its excellent performance, reliable operation and high power density. Through years of development, the direct-current brushless motor generates a plurality of mature control schemes.
In the existing speed-regulating Control scheme of the dc brushless motor, two modes, namely square wave Control and Field-Oriented Control (FOC), are usually used, wherein the square wave Control simulates a voltage of a sine wave through a Pulse Width Modulation (PWM) signal output by a single chip Microcomputer (MCU) and a duty cycle to Control the motor driving motor, the input power of the motor is regulated by controlling the duty cycle of the PWM signal to regulate the motor speed, the FOC Control simulates a voltage of a sine wave by using the PWM signal output by the MCU and the duty cycle to regulate the motor speed, the amplitude of the sine wave is regulated to regulate the motor speed, and the FOC controls the essence of the motor speed or regulates the PWM duty cycle.
However, the rotation speed of the motor is adjusted by controlling the duty ratio of the PWM, the rotation speed of the motor can only be adjusted within a certain range, the range of the motor speed regulation interval is narrow, and the method is not suitable for some control situations of high input power and high rotation speed.
Accordingly, the prior art is yet to be improved and developed.
Disclosure of Invention
In view of the above-mentioned deficiencies of the prior art, an object of the present invention is to provide a method and a system for regulating a speed of a dc brushless motor, and a motor driving device, so as to solve the problem that the rotational speed of the motor in the conventional speed regulation control scheme of the dc brushless motor can only be regulated within a certain range, so that the range of the speed regulation interval of the motor is narrow, and the dc brushless motor is not suitable for use in some control situations with high input power and high rotational speed.
The technical scheme of the invention is as follows:
a speed regulation method for a brushless DC motor comprises the following steps:
judging whether the motor enters a closed-loop control mode or not;
if the motor enters a closed-loop control mode, judging whether the target rotating speed is in the maximum adjustable rotating speed range;
when the target rotating speed exceeds the maximum adjustable range, adjusting the upper limit rotating speed and the lower limit rotating speed of the motor by adjusting the input voltage of the motor;
and when the target rotating speed is within the maximum adjustable rotating speed range, adjusting the rotating speed of the motor within the maximum adjustable rotating speed range of the motor.
The present invention further provides that, when the target rotation speed exceeds the maximum adjustable range, the step of adjusting the upper limit rotation speed and the lower limit rotation speed of the motor by adjusting the input voltage of the motor comprises:
the input voltage of the motor is adjusted within the maximum voltage range of the motor so as to adjust the upper limit rotating speed and the lower limit rotating speed of the motor and increase the speed regulation range of the motor to the maximum.
In the non-inductive square wave control, when the target rotation speed is within the maximum adjustable rotation speed range, the step of adjusting the rotation speed of the motor within the maximum adjustable rotation speed range of the motor further comprises:
controlling the rotating speed of the motor by using a fixed pulse width duty ratio;
the rotating speed of the motor is adjusted by adjusting the input voltage of the motor.
In the inductive square wave control, when the target rotation speed is within the maximum adjustable rotation speed range, the step of adjusting the rotation speed of the motor within the maximum adjustable rotation speed range of the motor further comprises:
calibrating the position of a motor rotor;
preliminarily adjusting the rotating speed of the motor by adjusting the input voltage of the motor;
the motor rotating speed is accurately adjusted by adjusting the duty ratio of the pulse width modulation signal.
The invention further provides that, in the magnetic field orientation control, when the target rotating speed is within the maximum adjustable rotating speed range, the step of adjusting the rotating speed of the motor within the maximum adjustable rotating speed range of the motor comprises the following steps:
preliminarily adjusting the rotating speed of the motor by adjusting the input voltage of the motor;
the motor rotating speed is accurately adjusted by adjusting the duty ratio of the pulse width modulation signal.
According to a further arrangement of the present invention, the step of determining whether the motor enters the closed-loop control mode comprises:
and judging whether the target rotating speed is equal to the actual rotating speed, if so, judging that the motor enters a closed-loop control mode.
The invention further provides that the step of judging whether the motor enters the closed-loop control mode further comprises the following steps:
setting the value of the target rotation speed.
Based on the same inventive concept, the invention also provides a single chip microcomputer which comprises a processor and a memory, wherein the memory stores a computer program, and the processor realizes the steps of the method when executing the computer program.
Based on the same inventive concept, the invention also provides a speed regulating system of the direct current brushless motor, which is connected with the motor, wherein the system comprises a direct current input power supply, an input power supply control module, a motor driving module and the single chip microcomputer; wherein the content of the first and second substances,
the direct current input power supply is connected with the input power supply control module and is used for providing a direct current power supply signal;
the input power supply control module is connected with the motor driving module and is used for outputting input voltage to the motor driving module;
the single chip microcomputer is respectively connected with the input power control module and the motor driving module, and is used for outputting a voltage control signal to the input power control module to control the magnitude of input voltage output by the input power control module so as to control the output power of the motor driving module and outputting a pulse width modulation signal to the motor driving module to control the output power of the motor driving module;
the motor driving module is connected with the motor and used for driving the motor to rotate.
Based on the same inventive concept, the invention also provides motor driving equipment which comprises a motor and the direct current brushless motor speed regulating system, wherein the direct current brushless motor speed regulating system is connected with the motor and is used for controlling the motor to rotate.
The invention provides a speed regulation method, a system and motor driving equipment of a direct current brushless motor, wherein the method comprises the following steps: judging whether the motor enters a closed-loop control mode or not; if the motor enters a closed-loop control mode, judging whether the target rotating speed is in a maximum adjustable rotating speed range; when the target rotating speed exceeds the maximum adjustable range, adjusting the upper limit rotating speed and the lower limit rotating speed of the motor by adjusting the input voltage of the motor; and if the target rotating speed is within the maximum adjustable rotating speed range, adjusting the rotating speed of the motor within the maximum adjustable rotating speed range of the motor. According to the invention, after the motor enters the closed-loop control mode, if the target rotating speed is detected to exceed the maximum adjustable range, the input voltage of the motor is adjusted to adjust the upper limit rotating speed and the lower limit rotating speed of the motor, and if the target rotating speed is detected to be within the maximum adjustable range, the rotating speed of the motor is adjusted within the maximum adjustable rotating speed range of the motor. Therefore, the invention can enlarge the speed regulation range of the motor by regulating the input voltage of the motor, thereby being suitable for the control situations of high input power and high rotating speed.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a flow chart of a speed regulating method of a brushless dc motor according to the present invention.
Fig. 2 is a schematic diagram of the ADC sampling at high level in the motor non-inductive square wave control scheme.
Fig. 3 is a waveform diagram of square waves in the inductive and non-inductive square wave control scheme of the motor of the present invention.
FIG. 4 is a waveform diagram of a sine wave in the control of the FOC scheme in the present invention.
Fig. 5 is a flowchart of an embodiment of a dc brushless motor speed control method according to the present invention.
Fig. 6 is a schematic block diagram of a dc brushless motor speed control system according to the present invention.
In the drawings, the reference numbers: 100. a direct current input power supply; 200. an input power control module; 300. a motor drive module; 400. a single chip microcomputer; 500. an electric motor.
Detailed Description
The invention provides a speed regulation method, a system and motor driving equipment of a brushless direct current motor, and in order to make the purpose, technical scheme and effect of the invention clearer and clearer, the invention is further described in detail below by referring to the attached drawings and taking examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the embodiments and claims, the articles "a", "an", "the" and "the" may include plural forms as well, unless the context specifically dictates otherwise. If there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature.
It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may also be present. Further, "connected" or "coupled" as used herein may include wirelessly connected or wirelessly coupled. As used herein, the term "and/or" includes all or any element and all combinations of one or more of the associated listed items.
It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
In addition, technical solutions between the embodiments may be combined with each other, but must be based on the realization of the technical solutions by a person skilled in the art, and when the technical solutions are contradictory to each other or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
Referring to fig. 1 to 5, the present invention provides a preferred embodiment of a speed adjusting method for a dc brushless motor.
As shown in fig. 1, the speed regulating method for a dc brushless motor according to the present invention includes the steps of:
s100, judging whether the motor enters a closed-loop control mode or not;
s200, if the motor enters a closed-loop control mode, judging whether the target rotating speed is in a maximum adjustable rotating speed range;
s300, when the target rotating speed exceeds the maximum adjustable range, adjusting the upper limit rotating speed and the lower limit rotating speed of the motor by adjusting the input voltage of the motor;
s400, when the target rotating speed is within the maximum adjustable rotating speed range, adjusting the rotating speed of the motor within the maximum adjustable rotating speed range of the motor.
Specifically, a single chip Microcomputer (MCU) detects whether the motor has entered a closed-loop Control mode, and if not, the monitoring is continued. When the single chip microcomputer detects that the motor enters the closed-loop control mode, whether the target rotating speed of the motor is within the maximum adjustable rotating speed range is further detected, and if the single chip microcomputer detects that the target rotating speed exceeds the maximum adjustable rotating speed range, the input voltage of the motor is controlled through the single chip microcomputer to adjust the input power of the motor, so that the upper limit rotating speed and the lower limit rotating speed of the motor are adjusted. If the target rotating speed is detected to be within the maximum adjustable range of the motor, the rotating speed of the motor can be adjusted within the maximum adjustable rotating speed range of the motor through the single chip microcomputer.
In the above technical scheme, after the motor enters the closed-loop control mode, if the single chip microcomputer detects that the target rotating speed exceeds the maximum adjustable range, the input voltage of the motor is adjusted through the single chip microcomputer to adjust the upper limit rotating speed and the lower limit rotating speed of the motor, and when the single chip microcomputer detects that the target rotating speed is within the maximum adjustable range, the rotating speed of the motor is adjusted through the single chip microcomputer within the maximum adjustable rotating speed range of the motor. Therefore, the invention can enlarge the speed regulation range of the motor by regulating the input voltage of the motor, avoids limiting the regulation range of the power and the rotating speed of the motor, can adapt to some control situations of high input power and high rotating speed, and can improve the sensitivity of the speed regulation of the motor.
In some embodiments, step S300 includes:
s310, adjusting the input voltage of the motor within the maximum voltage range of the motor to adjust the upper limit rotating speed and the lower limit rotating speed of the motor and increase the speed regulation range of the motor to the maximum.
Specifically, the positive large input power and the minimum input power of the motor are adjusted by controlling the input voltage of the motor within the maximum voltage range of the motor, so that the upper limit and the lower limit of the rotating speed of the motor are controlled, and the speed regulation range of the motor can be enlarged.
In some embodiments, when the motor is controlled in the non-inductive square wave control, the step S400 includes the steps of:
s410, controlling the rotating speed of the motor by using a fixed pulse width duty ratio;
and S420, adjusting the rotating speed of the motor by adjusting the input voltage of the motor.
Specifically, in the non-inductive square wave control (no position sensor) of the motor, an Analog-to-Digital Converter (ADC) of the single chip microcomputer continuously samples at a high level or a low level of the PWM, and the ADC sampling needs to consider sampling time and conversion time, which results in a reduction in the adjustment range of the PWM. In addition, the back electromotive force of the three phases of the motor needs to be sampled and detected to judge the zero crossing point to determine the position of the rotor so as to change the phase of the motor. And in the sampling of the back electromotive force by the ADC of the MCU, because the speed regulation of the motor needs to adjust the duty ratio of the PWM, and the ADC samples at the high level or the low level of the PWM, when the duty ratio of the PWM is too high or too low, the ADC samples an error, resulting in a failed commutation of the motor, as shown in fig. 2, fig. 2 is a schematic diagram of the ADC sampling at the high level in a control scheme of the sensorless square wave of the motor, and when the ADC samples at the high level, the sampling frequency becomes less when the pulse width is narrower when the duty ratio of the PWM is used to adjust the rotation speed of the motor, thereby resulting in a sampling error.
Therefore, in the non-inductive square wave control, in order to avoid the error caused by too small continuous sampling of the ADC due to too wide or too narrow pulse of the PWM when the rotating speed of the motor is adjusted by adjusting the duty ratio of the PWM, the invention controls the motor by the fixed duty ratio of the PWM (the ratio of the duty ratio is determined according to the practical application situation), and adjusts the input voltage of the motor by the singlechip for controlling the rotating speed of the motor so as to adjust the input power of the motor, thereby achieving the control of the rotating speed of the motor and enlarging the speed regulation range of the motor, as shown in fig. 3, fig. 3 is a waveform diagram of the square wave in the control scheme of the motor inductive and non-inductive square wave of the invention, wherein a solid line represents a waveform diagram of the square wave of the input voltage which does not pass through the adjustment of the motor, and a dotted line represents a waveform diagram of the square wave after the input voltage of the motor passes through the adjustment.
In some embodiments, when the motor is controlled to be in the inductive square wave control, the step S400 includes the steps of:
s430, calibrating the position of the motor rotor;
s440, primarily adjusting the rotating speed of the motor by adjusting the input voltage of the motor;
and S450, accurately adjusting the rotating speed of the motor by adjusting the duty ratio of the pulse width modulation signal.
Specifically, in a scheme of controlling the sensed square wave of the motor (with a position sensor), the position of the rotor of the motor is calibrated by the position sensor, the singlechip controls the input voltage of the motor to control the maximum rotating speed (upper limit rotating speed) and the minimum rotating speed (lower limit rotating speed) of the motor, so that the speed of the motor can be regulated within the range of the maximum rotating speed, as shown in fig. 3, fig. 3 is a waveform diagram of the square wave in the scheme of controlling the sensed square wave of the motor and the non-sensed square wave of the invention, wherein a solid line represents a waveform diagram of the square wave which does not pass through the input voltage regulation of the motor, and a dotted line represents a waveform diagram of the square wave after passing through the input voltage regulation of the motor. That is to say, the single chip microcomputer can carry out the speed governing on the motor rotational speed on a large scale, and then the duty ratio of PWM is further controlled by the single chip microcomputer to carry out more accurate regulation to the motor rotational speed within the maximum speed governing scope of motor to reach the purpose of controlling the upper limit and the lower limit of motor rotational speed and accurately controlling the motor rotational speed.
In some embodiments, when the motor is controlled to be in the field orientation control, the step S400 includes the steps of:
s460, primarily adjusting the rotating speed of the motor by adjusting the input voltage of the motor;
and S470, accurately adjusting the rotating speed of the motor by adjusting the duty ratio of the pulse width modulation signal.
Specifically, when the motor control scheme is in the field oriented control, the input voltage of the motor is first adjusted by the single chip microcomputer to make the speed regulation range of the motor wider, as shown in fig. 4, fig. 4 is a waveform diagram of a sine wave in the FOC scheme control of the present invention, in which a solid line represents a waveform diagram of a sine wave that does not pass through the input voltage of the motor, and a dotted line represents a waveform diagram of a sine wave after passing through the input voltage of the motor. And then, the motor rotating speed is finely adjusted by adjusting the duty ratio of the PWM to the amplitude of the PWM sine wave, so that the motor rotating speed is adjusted in a large range, and the accurate adjustment of the motor rotating speed can be displayed at the same time.
In some embodiments, step S100 comprises the steps of:
and S110, judging whether the target rotating speed is equal to the actual rotating speed, and if so, judging that the motor enters a closed-loop control mode.
Specifically, the value of the target rotating speed is set through the single chip microcomputer, in the starting process of the motor, the single chip microcomputer detects whether the target rotating speed is equal to the actual rotating speed, if the target rotating speed is equal to the actual rotating speed, the motor enters a closed-loop control mode to adjust the motor, and whether the target rotating speed is in the maximum adjustable rotating speed range is further judged, so that whether the rotating speed of the motor needs to be adjusted in a large range by adjusting the input voltage of the motor or not is confirmed.
In order to better understand the invention, the following description is given of a specific application example.
As shown in fig. 5, a value of a target rotation speed needs to be set, during an operation process, the single chip microcomputer detects whether the target rotation speed is equal to an actual rotation speed in real time, if so, further determines whether the target rotation speed is within a maximum adjustable rotation speed range of the motor, if not, adjusts an upper limit and a lower limit of the rotation speed of the motor to increase an adjustment range of the rotation speed of the motor, and then, adjusts the duty ratio of PWM to accurately adjust the rotation speed of the motor, and if not, directly adjusts the duty ratio of PWM to accurately adjust the rotation speed of the motor.
In some embodiments, the present invention further provides a single chip microcomputer, which includes a processor and a memory, where the memory stores a computer program, and the processor implements the following steps when executing the computer program:
s100, judging whether the motor enters a closed-loop control mode or not;
s200, if the motor enters a closed-loop control mode, judging whether the target rotating speed is in a maximum adjustable rotating speed range;
s300, when the target rotating speed exceeds the maximum adjustable range, adjusting the upper limit rotating speed and the lower limit rotating speed of the motor by adjusting the input voltage of the motor;
and S400, when the target rotating speed is within the maximum adjustable rotating speed range, adjusting the rotating speed of the motor within the maximum adjustable rotating speed range of the motor.
Referring to fig. 6, in some embodiments, the present invention further provides a dc brushless motor speed regulation system, connected to a motor 500, where the system includes a dc input power 100, an input power control module 200, a motor driving module 300, and the above-mentioned single chip 400; the dc input power 100 is connected to the input power control module 200, and the dc input power 100 is configured to provide a dc power signal; the input power control module 200 is connected to the motor driving module 300, and the input power control module 200 is configured to output an input voltage to the motor driving module 300; the single chip microcomputer 400 is respectively connected to the input power control module 200 and the motor driving module 300, and the single chip microcomputer 400 is configured to output a voltage control signal to the input power control module 200 to control the magnitude of the input voltage output by the input power control module 200 so as to control the output power of the motor driving module 300, and is configured to output a pulse width modulation signal to the motor driving module 300 to control the output power of the motor driving module 300; the motor driving module 300 is connected to the motor 500, and the motor driving module 300 is configured to drive the motor 500 to rotate.
Specifically, the dc input power supply 100 is used as a power supply of a system, and is capable of providing a dc power signal to the system. The input power control module 200 may be an input power control chip that adjusts an input voltage output to the motor driving module 300 according to a voltage control signal output from the single chip microcomputer 400, so as to adjust an output power of the motor driving module 300, thereby adjusting a motor rotation speed. In addition, the single chip microcomputer 400 can also output a PWM signal to control the output power of the motor driving module 300, so as to adjust the motor speed in a manner of adjusting the PWM duty ratio.
Therefore, the speed regulation range of the motor 500 can be enlarged by regulating the input voltage of the motor 500, and then the duty ratio of the PWM can be regulated to achieve accurate regulation of the input power of the motor 500, so that the motor rotation speed can be accurately regulated, and further the invention can adapt to some control situations of high input power and high rotation speed, and can improve the sensitivity of motor speed regulation.
In some embodiments, the present invention further provides a motor driving device, which is a device having a dc brushless motor, and may be a device such as a household appliance, an electric vehicle, or an electric tool. The motor driving device comprises a motor and a direct current brushless motor speed regulating system, the direct current brushless motor speed regulating system is connected with the motor, and the direct current brushless motor speed regulating system is used for controlling the motor to rotate. The embodiment of the dc brushless motor speed adjusting system is specifically described in the embodiment of the dc brushless motor speed adjusting system, and is not described herein again.
In summary, the speed regulating method, system and motor driving device for the dc brushless motor provided by the invention have the following beneficial effects:
1. the speed regulation range of the motor can be enlarged by regulating the input voltage of the motor, so that the control method can adapt to some control situations of high input power and high rotation speed, and can improve the sensitivity of motor speed regulation;
2. for the inductive square wave control and the FOC control, the input power of the motor is accurately adjusted by adjusting the duty ratio of PWM, so that the rotating speed of the high-precision motor is adjusted;
3. for the non-inductive square wave control, the rotation speed of the motor is regulated by controlling the input voltage through the MCU, so that the false sampling of the back electromotive force by the ADC when the PWM duty ratio is too high or too low is avoided.
It is to be understood that the invention is not limited to the examples described above, but that modifications and variations may be effected thereto by those of ordinary skill in the art in light of the foregoing description, and that all such modifications and variations are intended to be within the scope of the invention as defined by the appended claims.
Claims (10)
1. A speed regulation method of a brushless direct current motor is characterized by comprising the following steps:
judging whether the motor enters a closed-loop control mode or not;
if the motor enters a closed-loop control mode, judging whether the target rotating speed is in a maximum adjustable rotating speed range;
when the target rotating speed exceeds the maximum adjustable range, adjusting the upper limit rotating speed and the lower limit rotating speed of the motor by adjusting the input voltage of the motor;
and when the target rotating speed is within the maximum adjustable rotating speed range, adjusting the rotating speed of the motor within the maximum adjustable rotating speed range of the motor.
2. The method according to claim 1, wherein when the target speed exceeds the maximum adjustable range, the step of adjusting the upper limit speed and the lower limit speed of the motor speed by adjusting the input voltage of the motor comprises:
the input voltage of the motor is adjusted within the maximum voltage range of the motor so as to adjust the upper limit rotating speed and the lower limit rotating speed of the motor and increase the speed regulation range of the motor to the maximum.
3. The method according to claim 1, wherein in the non-inductive square wave control, when the target rotation speed is within the maximum adjustable rotation speed range, the step of adjusting the rotation speed of the motor within the maximum adjustable rotation speed range comprises:
controlling the rotating speed of the motor by using a fixed pulse width duty ratio;
the rotating speed of the motor is adjusted by adjusting the input voltage of the motor.
4. The method according to claim 1, wherein in the inductive square wave control, when the target rotation speed is within the maximum adjustable rotation speed range, the step of adjusting the rotation speed of the motor within the maximum adjustable rotation speed range comprises:
calibrating the position of a motor rotor;
preliminarily adjusting the rotating speed of the motor by adjusting the input voltage of the motor;
the motor rotating speed is accurately adjusted by adjusting the duty ratio of the pulse width modulation signal.
5. The method according to claim 1, wherein in the field-oriented control, when the target rotation speed is within the maximum adjustable rotation speed range, the step of adjusting the rotation speed of the motor within the maximum adjustable rotation speed range comprises:
preliminarily adjusting the rotating speed of the motor by adjusting the input voltage of the motor;
the motor rotating speed is accurately adjusted by adjusting the duty ratio of the pulse width modulation signal.
6. The method according to claim 1, wherein the step of determining whether the motor enters the closed-loop control mode comprises:
and judging whether the target rotating speed is equal to the actual rotating speed, if so, judging that the motor enters a closed-loop control mode.
7. The method according to claim 1, wherein the step of determining whether the motor enters the closed-loop control mode further comprises:
setting the value of the target rotation speed.
8. A single-chip microcomputer comprising a processor and a memory, wherein the memory stores a computer program, and the processor implements the steps of the method according to any one of claims 1 to 7 when executing the computer program.
9. A DC brushless motor speed control system, connect with motor, characterized by that, including direct-flow input power, input power control module, motor drive module and the one-chip computer according to claim 8; wherein the content of the first and second substances,
the direct current input power supply is connected with the input power supply control module and is used for providing a direct current power supply signal;
the input power supply control module is connected with the motor driving module and is used for outputting input voltage to the motor driving module;
the single chip microcomputer is respectively connected with the input power control module and the motor driving module, and is used for outputting a voltage control signal to the input power control module to control the magnitude of input voltage output by the input power control module so as to control the output power of the motor driving module and outputting a pulse width modulation signal to the motor driving module to control the output power of the motor driving module;
the motor driving module is connected with the motor and used for driving the motor to rotate.
10. A motor drive apparatus comprising a motor and a dc brushless motor speed regulation system according to claim 9, the dc brushless motor speed regulation system being connected to the motor, the dc brushless motor speed regulation system being configured to control rotation of the motor.
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| CN202211001284.7A CN115395828A (en) | 2022-08-19 | 2022-08-19 | Speed regulation method and system for brushless direct current motor and motor driving equipment |
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| CN202211001284.7A CN115395828A (en) | 2022-08-19 | 2022-08-19 | Speed regulation method and system for brushless direct current motor and motor driving equipment |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106170171A (en) * | 2016-08-30 | 2016-11-30 | 中广核达胜加速器技术有限公司 | A kind of wide scope, in high precision, microbeam stream regulation circuit |
| CN206490610U (en) * | 2017-01-04 | 2017-09-12 | 山东省产品质量检验研究院 | A kind of motor circuit of use closed-loop pulse width PWM speed regulating controls |
| CN108039840A (en) * | 2017-12-18 | 2018-05-15 | 峰岹科技（深圳）有限公司 | Brushless DC motor control system and method |
| CN216904710U (en) * | 2022-02-21 | 2022-07-05 | 深圳市鑫开源电子有限公司 | Wide speed regulation range's first beautiful machine DC brushless motor control circuit and first beautiful machine |
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2022
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106170171A (en) * | 2016-08-30 | 2016-11-30 | 中广核达胜加速器技术有限公司 | A kind of wide scope, in high precision, microbeam stream regulation circuit |
| CN206490610U (en) * | 2017-01-04 | 2017-09-12 | 山东省产品质量检验研究院 | A kind of motor circuit of use closed-loop pulse width PWM speed regulating controls |
| CN108039840A (en) * | 2017-12-18 | 2018-05-15 | 峰岹科技（深圳）有限公司 | Brushless DC motor control system and method |
| CN216904710U (en) * | 2022-02-21 | 2022-07-05 | 深圳市鑫开源电子有限公司 | Wide speed regulation range's first beautiful machine DC brushless motor control circuit and first beautiful machine |
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