CN113839605A - Motor rotating speed control method and device - Google Patents
Motor rotating speed control method and device Download PDFInfo
- Publication number
- CN113839605A CN113839605A CN202010583066.3A CN202010583066A CN113839605A CN 113839605 A CN113839605 A CN 113839605A CN 202010583066 A CN202010583066 A CN 202010583066A CN 113839605 A CN113839605 A CN 113839605A
- Authority
- CN
- China
- Prior art keywords
- motor
- voltage
- value
- target
- current
- Prior art date
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 59
- 230000008569 process Effects 0.000 claims abstract description 19
- 238000012545 processing Methods 0.000 claims description 21
- 230000001276 controlling effect Effects 0.000 claims description 14
- 230000001105 regulatory effect Effects 0.000 claims description 5
- 230000000087 stabilizing effect Effects 0.000 claims description 5
- 239000002699 waste material Substances 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 14
- 238000003860 storage Methods 0.000 description 14
- 230000006870 function Effects 0.000 description 8
- 238000004590 computer program Methods 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 4
- 230000003287 optical effect Effects 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 230000001902 propagating effect Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Images
Classifications
-
- 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
- H02P29/10—Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors for preventing overspeed or under speed
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Electric Motors In General (AREA)
Abstract
The disclosure relates to a motor rotating speed control method and device. The method comprises the following steps: acquiring the current value of the motor in the running process of the motor; determining a target voltage value corresponding to the current value according to a predetermined corresponding relation between the current value and the voltage value of the motor, wherein the corresponding relation comprises a corresponding relation between the current value and the voltage value when the motor keeps a target rotating speed; and adjusting the voltage of the motor to the target voltage value, so that the motor runs at the target rotating speed. The method and the device can realize effective control of the rotating speed of the motor on the basis of not increasing hardware such as a sensor, can effectively save cost, and reduce the waste of control resources.
Description
Technical Field
The disclosure relates to the technical field of electric equipment, in particular to a method and a device for controlling the rotating speed of a motor.
Background
The motor is an important part of the electric tool, and different operation functions such as cutting, sawing, grinding, scraping and the like can be realized by configuring different working heads at the tail end of an output shaft of the motor so as to adapt to different working requirements. However, in the practical application process, because the load applied to the working head is constantly changed, the rotation speed of the motor is also changed correspondingly, and the change of the rotation speed can cause the reduction of the working efficiency. Therefore, in practical applications, the rotation speed of the motor needs to be controlled in real time so as to maintain a stable rotation speed.
In the prior art, a sensor (such as a hall sensor) is usually matched with a corresponding controller, the rotating speed of a motor is monitored in real time through the sensor, and the controller performs corresponding control according to the rotating speed measured by the sensor. However, the above-mentioned motor speed stabilizing method results in higher cost and waste of controller resources.
Disclosure of Invention
The present disclosure provides a method and an apparatus for controlling a rotational speed of a motor, so as to implement the rotational speed control of the motor with a low cost.
According to an aspect of the present disclosure, there is provided a motor rotation speed control method, the method including:
acquiring the current value of the motor in the running process of the motor;
determining a target voltage value corresponding to the current value according to a predetermined corresponding relation between the current value and the voltage value of the motor, wherein the corresponding relation comprises a corresponding relation between the current value and the voltage value when the motor keeps a target rotating speed;
and adjusting the voltage of the motor to the target voltage value, so that the motor runs at the target rotating speed.
In a possible implementation manner, the corresponding relationship includes that the following manner is adopted to determine:
adjusting the voltage of the motor and keeping the motor at the target rotating speed;
in the adjusting process, measuring a current value corresponding to each voltage value in the adjusted voltage values;
and determining the corresponding relation according to the voltage values and the current values corresponding to the voltage values.
In a possible implementation manner, the correspondence relationship further includes a correspondence relationship between a current value and a voltage value in a state where the motor maintains the target rotation speed and the motor torque is a specific torque value.
In a possible implementation manner, before determining a target voltage value corresponding to the current value according to a predetermined correspondence between a current value and a voltage value of the motor, the method further includes:
acquiring a current torque value of the motor;
and determining the corresponding relation according to the current torque value and the target rotating speed.
In a possible implementation manner, the corresponding relationship includes that the following manner is adopted to determine:
adjusting the voltage of the motor and keeping the motor at the target rotating speed, and controlling the motor torque to be kept at the specific torque value;
in the adjusting process, measuring a current value corresponding to each voltage value in the adjusted voltage values;
and determining the corresponding relation according to the voltage values and the current values corresponding to the voltage values.
In a possible implementation manner, the determining the correspondence relationship according to the voltage values and the current values corresponding to the voltage values includes:
fitting to obtain a corresponding relation curve of the current value and the voltage value according to the voltage values and the current values corresponding to the voltage values;
and determining a corresponding relation between the current value and the voltage value according to the corresponding relation curve.
In a possible implementation manner, determining, according to a predetermined correspondence between a current value and a voltage value of the motor, a target voltage value corresponding to the current value includes:
and substituting the current value into the corresponding relational expression, and calculating to obtain a corresponding voltage value as the target voltage value.
In one possible implementation, the adjusting the voltage of the motor and maintaining the motor at the target rotation speed includes:
and regulating the voltage of the motor by using a voltage stabilizing source and keeping the motor at the target rotating speed.
In one possible implementation, the adjusting the voltage of the motor to the target voltage value to operate the motor at the target rotation speed includes:
determining a specific duty ratio of the motor according to the current value of the motor in one period;
and setting the duty ratio of the motor to be the specific duty ratio, and adjusting the voltage of the motor to the target voltage value to enable the motor to operate at the target rotating speed.
According to a second aspect of the present disclosure, there is provided a motor rotation speed control apparatus for performing the above motor rotation speed control method, the apparatus including:
the current acquisition unit is configured to acquire the current value of the motor in the operation process of the motor;
the processing unit is configured to determine a target voltage value corresponding to the current value according to a predetermined corresponding relation between the current value and the voltage value of the motor, wherein the corresponding relation comprises a corresponding relation between the current value and the voltage value when the motor keeps a target rotating speed; and adjusting the voltage of the motor to the target voltage value, so that the motor runs at the target rotating speed.
In a possible implementation manner, the corresponding relationship includes that the following manner is adopted to determine:
adjusting the voltage of the motor and keeping the motor at the target rotating speed;
in the adjusting process, measuring a current value corresponding to each voltage value in the adjusted voltage values;
and determining the corresponding relation according to the voltage values and the current values corresponding to the voltage values.
In a possible implementation manner, the correspondence relationship further includes a correspondence relationship between a current value and a voltage value in a state where the motor maintains the target rotation speed and the motor torque is a specific torque value.
In a possible implementation manner, before the determining, by the processing unit, a target voltage value corresponding to the current value according to a predetermined correspondence between a current value and a voltage value of the motor, the method further includes:
acquiring a current torque value of the motor;
and determining the corresponding relation according to the current torque value and the target rotating speed.
In a possible implementation manner, the corresponding relationship includes that the following manner is adopted to determine:
adjusting the voltage of the motor and keeping the motor at the target rotating speed, and controlling the motor torque to be kept at the specific torque value;
in the adjusting process, measuring a current value corresponding to each voltage value in the adjusted voltage values;
and determining the corresponding relation according to the voltage values and the current values corresponding to the voltage values.
In a possible implementation manner, the determining the correspondence relationship according to the voltage values and the current values corresponding to the voltage values includes:
fitting to obtain a corresponding relation curve of the current value and the voltage value according to the voltage values and the current values corresponding to the voltage values;
and determining a corresponding relation between the current value and the voltage value according to the corresponding relation curve.
In a possible implementation manner, when the processing unit determines the target voltage value corresponding to the current value according to a predetermined correspondence between current values and voltage values of the motor in the implementing step, the processing unit includes:
and substituting the current value into the corresponding relational expression, and calculating to obtain a corresponding voltage value as the target voltage value.
In one possible implementation, the adjusting the voltage of the motor and maintaining the motor at the target rotation speed includes:
and regulating the voltage of the motor by using a voltage stabilizing source and keeping the motor at the target rotating speed.
In one possible implementation manner, the processing unit, when the step of implementing adjusts the voltage of the motor to the target voltage value so that the motor operates at the target rotation speed, includes:
determining a specific duty ratio of the motor according to the current value of the motor in one period;
and setting the duty ratio of the motor to be the specific duty ratio, and adjusting the voltage of the motor to the target voltage value to enable the motor to operate at the target rotating speed.
According to a third aspect of the present disclosure, there is provided a non-transitory computer readable storage medium having instructions which, when executed by a processor, enable the processor to perform a method according to any one of the present disclosure.
According to the embodiments provided by the aspects of the present disclosure, a target voltage value that can enable the motor to maintain a target rotation speed can be determined according to the real-time current of the motor and by combining the corresponding relationship between the current and the voltage at the target rotation speed of the motor; and further controlling the rotating speed of the motor to keep running at the target rotating speed by adjusting the voltage of the motor to the target voltage value. Therefore, the rotating speed of the motor can be effectively controlled on the basis of not increasing hardware such as a sensor, the cost can be effectively saved, and the waste of control resources is reduced.
Other features and aspects of the present disclosure will become apparent from the following detailed description of exemplary embodiments, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate exemplary embodiments, features, and aspects of the disclosure and, together with the description, serve to explain the principles of the disclosure.
Fig. 1 shows a schematic flow chart of a method for controlling a rotational speed of a motor according to an embodiment of the present disclosure.
Fig. 2 is a schematic block diagram illustrating a structure of a motor rotation speed control apparatus according to an embodiment of the present disclosure.
FIG. 3 is a block diagram of a motor control apparatus provided in accordance with an exemplary embodiment.
Detailed Description
Various exemplary embodiments, features and aspects of the present disclosure will be described in detail below with reference to the accompanying drawings. In the drawings, like reference numbers can indicate functionally identical or similar elements. While the various aspects of the embodiments are presented in drawings, the drawings are not necessarily drawn to scale unless specifically indicated.
The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustration. Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments.
Furthermore, in the following detailed description, numerous specific details are set forth in order to provide a better understanding of the present disclosure. It will be understood by those skilled in the art that the present disclosure may be practiced without some of these specific details. In some instances, methods, means, elements and circuits that are well known to those skilled in the art have not been described in detail so as not to obscure the present disclosure.
It should be understood that the term "and/or" herein is merely one type of association relationship that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" in this document indicates that the former and latter related objects are in an "or" relationship.
"plurality" appearing in embodiments of the present disclosure means two or more. The descriptions of the first, second, etc. appearing in the embodiments of the present disclosure are for illustrative and descriptive purposes only, and are not for order, nor do they represent any special limitations on the number of embodiments of the present disclosure, and should not be construed as limiting the embodiments of the present disclosure in any way.
Fig. 1 is a schematic flow chart of a method for controlling a rotational speed of a motor according to an embodiment of the present disclosure. The method can be applied to various electric tools using a motor, such as a lawn mower and the like, and can be executed by a control device in the electric tool, such as a microprocessor, a controller and the like. Specifically, as shown in fig. 1, the method may include:
s110: and acquiring the current value of the motor in the running process of the motor.
The current value refers to a real-time current value at the current moment in the operation process of the motor, and may also be an average current value in a short time. In one embodiment of the present disclosure, the current value may be obtained through an original current measuring component of a circuit where the motor is located, or may be obtained through a current measuring component in an electric tool to which the motor belongs, and there is no need to add additional complex devices such as a sensor, and there is no need to add control resources. For example, the current value can be measured by using a sampling resistor included in a loop in which the motor is located, and the digital quantity of the current value is provided to the control device through the analog-to-digital conversion unit. Of course, in other embodiments of the present disclosure, the current value may also be obtained in other manners, as long as the current value of the motor can be obtained in real time, which is not limited in the present disclosure.
S120: and determining a target voltage value corresponding to the current value according to a predetermined corresponding relation between the current value and the voltage value of the motor, wherein the corresponding relation comprises the corresponding relation between the current value and the voltage value when the motor keeps the target rotating speed.
Wherein the target voltage value refers to a voltage value that satisfies the correspondence relationship with the current value even if the motor maintains the voltage value of the target rotation speed. When the voltage value and the current value satisfy the corresponding relation, the rotating speed of the motor can be kept at the target rotating speed, so that the motor can be kept at the target rotating speed as long as the voltage value of the motor is controlled to be the target voltage value on the premise that the current value is determined.
The corresponding relation refers to the corresponding relation between the current value and the voltage value of the motor under the condition that the motor rotates at a certain target rotating speed. The target rotation speeds are different, and the corresponding relations are also different, specifically, the corresponding relations can be obtained according to the actual required target rotation speeds. For example, when the rotation speed of the motor of the mower needs to be controlled to be 3000 revolutions, the corresponding relationship between the current value and the voltage value corresponding to 3000 revolutions can be selected.
In this example, the target voltage value required for controlling the motor to maintain the target rotation speed may be determined according to the correspondence and the obtained current value.
The correspondence relationship may be determined before the power tool starts to operate, and stored in advance in a storage device or a control device of the power tool. The correspondence may also be obtained from a network or an external storage device through a communication interface on the power tool.
In an embodiment of the present disclosure, the corresponding relationship may be determined by:
adjusting the voltage of the motor and keeping the motor at the target rotating speed;
in the adjusting process, measuring a current value corresponding to each voltage value in the adjusted voltage values;
and determining the corresponding relation according to the voltage values and the current values corresponding to the voltage values.
Further, in an embodiment of the present disclosure, the determining the correspondence relationship according to the voltage values and the current values corresponding to the voltage values may include:
fitting to obtain a corresponding relation curve of the current value and the voltage value according to the voltage values and the current values corresponding to the voltage values;
and determining a corresponding relation between the current value and the voltage value according to the corresponding relation curve.
Correspondingly, in this example, the determining, according to the predetermined correspondence between the current value and the voltage value of the motor, the target voltage value corresponding to the current value may include:
and substituting the current value into the corresponding relational expression, and calculating to obtain a corresponding voltage value as the target voltage value.
In another embodiment of the present disclosure, the correspondence relationship may further include a correspondence relationship between a current value and a voltage value in a state where the motor maintains the target rotation speed and the motor torque is a specific torque value. In some practical application scenarios, the motor (such as a lawn mower) may be configured with different working heads to adapt to different application scenarios, and thus, the torque value of the motor in different application scenarios is different. Under the same target rotating speed state, the torque value is different, and the corresponding relation between the current value and the voltage value of the motor is also different. Therefore, the correspondence relationship is determined in this example in conjunction with the torque value so that the control of the motor rotation speed is more matched to the actual working environment.
In this example, before determining the target voltage value corresponding to the current value according to the predetermined correspondence between the current value and the voltage value of the motor, the method may further include:
acquiring a current torque value of the motor;
and determining the corresponding relation according to the current torque value and the target rotating speed.
Specifically, for example, the torque may be converted into an optical signal by a photoelectric element, and then converted into an electrical signal, and the electrical signal is provided to a control device of the motor by an analog-to-digital conversion unit, or may be calculated by a control device (a microcontroller, a microprocessor, etc.) of the motor according to the current output power of the motor and the target rotation speed, for example, by a torque calculation formula T9550P/n, where P represents the output power of the motor and n represents the target rotation speed of the motor. Of course, in other embodiments of the present disclosure, other torque measurement manners or calculation manners may also be adopted to obtain the current torque value of the motor, and the present disclosure is not limited thereto.
For the motor with variable torque, the corresponding relation can be determined according to the current torque value and the target rotating speed of the motor, and each group of the target rotating speed and the current torque value corresponds to one corresponding relation. For example, if the target rotation speed of the motor is 3000 revolutions and the current torque value is 100 nm, the corresponding relationship between the current value and the voltage value of the motor under the conditions of 3000 revolutions and 100 nm may be selected as the corresponding relationship for determining the target voltage value.
Correspondingly, in this example, the corresponding relationship may be determined in the following manner:
adjusting the voltage of the motor and keeping the motor at the target rotating speed, and controlling the motor torque to be kept at the specific torque value;
wherein the voltage of the motor can be regulated by a voltage regulator and the motor can keep the target rotating speed.
Wherein, the specific torque value, i.e. the current torque value of the motor, such as 100 nm, specifically, the power of the motor may be controlled by a control device of the motor, so as to control the torque of the motor;
in the adjusting process, measuring a current value corresponding to each voltage value in the adjusted voltage values;
and determining the corresponding relation according to the voltage values and the current values corresponding to the voltage values.
Further, in an embodiment of the present disclosure, the determining the correspondence relationship according to the voltage values and the current values corresponding to the voltage values may include:
fitting to obtain a corresponding relation curve of the current value and the voltage value according to the voltage values and the current values corresponding to the voltage values;
and determining a corresponding relation between the current value and the voltage value according to the corresponding relation curve.
Correspondingly, in this example, the determining, according to the predetermined correspondence between the current value and the voltage value of the motor, the target voltage value corresponding to the current value may include:
and substituting the current value into the corresponding relational expression, and calculating to obtain a corresponding voltage value as the target voltage value.
S130: and adjusting the voltage of the motor to the target voltage value, so that the motor runs at the target rotating speed.
The voltage adjustment of the motor can be executed by a control device of the motor, extra hardware is not needed to be added, and waste of control resources is avoided.
Further, in an embodiment of the present disclosure, a specific duty ratio of the motor, that is, a current actual duty ratio of the motor, may be determined according to a measured current value in one period and a pre-fitted correspondence between a current value and a duty ratio;
in order to keep the motor stably at the target rotating speed all the time, the duty ratio of the motor can be set to be the specific duty ratio, and the voltage of the motor is adjusted to be the target voltage value, so that the motor can stably run at the target rotating speed in each subsequent period, and the stable speed control of the motor is realized.
Based on the method provided by each embodiment, the present disclosure further provides a motor rotation speed control device. Fig. 2 is a schematic structural diagram of a module of a motor rotation speed control apparatus according to an embodiment of the present disclosure, specifically, as shown in fig. 2, the apparatus may include:
a current obtaining unit 101 configured to obtain a current value of the motor during operation of the motor;
the processing unit 102 is configured to determine a target voltage value corresponding to the current value according to a predetermined correspondence relationship between the current value and the voltage value of the motor, where the correspondence relationship includes a correspondence relationship between the current value and the voltage value in a state where the motor maintains a target rotation speed; and adjusting the voltage of the motor to the target voltage value, so that the motor runs at the target rotating speed.
In a possible implementation manner, the corresponding relationship includes that the following manner is adopted to determine:
adjusting the voltage of the motor and keeping the motor at the target rotating speed;
in the adjusting process, measuring a current value corresponding to each voltage value in the adjusted voltage values;
and determining the corresponding relation according to the voltage values and the current values corresponding to the voltage values.
In a possible implementation manner, the correspondence relationship further includes a correspondence relationship between a current value and a voltage value in a state where the motor maintains the target rotation speed and the motor torque is a specific torque value.
In a possible implementation manner, before the implementing step determines the target voltage value corresponding to the current value according to a predetermined correspondence between a current value and a voltage value of the motor, the processing unit 102 further includes:
acquiring a current torque value of the motor;
and determining the corresponding relation according to the current torque value and the target rotating speed.
In a possible implementation manner, the corresponding relationship includes that the following manner is adopted to determine:
adjusting the voltage of the motor and keeping the motor at the target rotating speed, and controlling the motor torque to be kept at the specific torque value;
in the adjusting process, measuring a current value corresponding to each voltage value in the adjusted voltage values;
and determining the corresponding relation according to the voltage values and the current values corresponding to the voltage values.
In a possible implementation manner, the determining the correspondence relationship according to the voltage values and the current values corresponding to the voltage values includes:
fitting to obtain a corresponding relation curve of the current value and the voltage value according to the voltage values and the current values corresponding to the voltage values;
and determining a corresponding relation between the current value and the voltage value according to the corresponding relation curve.
In a possible implementation manner, when the processing unit 102 determines the target voltage value corresponding to the current value according to a predetermined correspondence between the current value and the voltage value of the motor in the implementation step, the implementation step includes:
and substituting the current value into the corresponding relational expression, and calculating to obtain a corresponding voltage value as the target voltage value.
In one possible implementation, the adjusting the voltage of the motor and maintaining the motor at the target rotation speed includes:
and regulating the voltage of the motor by using a voltage stabilizing source and keeping the motor at the target rotating speed.
In one possible implementation manner, the processing unit 102, when implementing the step of adjusting the voltage of the motor to the target voltage value to enable the motor to operate at the target rotation speed, includes:
determining a specific duty ratio of the motor according to the current value of the motor in one period;
and setting the duty ratio of the motor to be the specific duty ratio, and adjusting the voltage of the motor to the target voltage value to enable the motor to operate at the target rotating speed.
With regard to the apparatus in the above-described embodiment, the specific manner in which each module performs the operation has been described in detail in the embodiment related to the method, and will not be elaborated here.
Fig. 3 is a block diagram illustrating a motor control apparatus 1900 according to an exemplary embodiment. Referring to fig. 3, the device 1900 includes a processing component 1922 further including one or more processors and memory resources, represented by memory 1932, for storing instructions, e.g., applications, executable by the processing component 1922. The application programs stored in memory 1932 may include one or more modules that each correspond to a set of instructions. Further, the processing component 1922 is configured to execute instructions to perform the above-described method.
The device 1900 may also include a power component 1926 configured to perform power management of the apparatus 1900, a wired or wireless network interface 1950 configured to connect the apparatus 1900 to a network, and an input/output (I/O) interface 1958. The device 1900 may operate based on an operating system stored in memory 1932, such as Windows Server, Mac OS XTM, UnixTM, LinuxTM, FreeBSDTM, or the like.
In an exemplary embodiment, a non-transitory computer readable storage medium, such as the memory 1932, is also provided that includes computer program instructions executable by the processing component 1922 of the device 1900 to perform the above-described methods.
The present disclosure may be systems, methods, and/or computer program products. The computer program product may include a computer-readable storage medium having computer-readable program instructions embodied thereon for causing a processor to implement various aspects of the present disclosure.
The computer readable storage medium may be a tangible device that can hold and store the instructions for use by the instruction execution device. The computer readable storage medium may be, for example, but not limited to, an electronic memory device, a magnetic memory device, an optical memory device, an electromagnetic memory device, a semiconductor memory device, or any suitable combination of the foregoing. More specific examples (a non-exhaustive list) of the computer readable storage medium would include the following: a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), a Static Random Access Memory (SRAM), a portable compact disc read-only memory (CD-ROM), a Digital Versatile Disc (DVD), a memory stick, a floppy disk, a mechanical coding device, such as punch cards or in-groove projection structures having instructions stored thereon, and any suitable combination of the foregoing. Computer-readable storage media as used herein is not to be construed as transitory signals per se, such as radio waves or other freely propagating electromagnetic waves, electromagnetic waves propagating through a waveguide or other transmission medium (e.g., optical pulses through a fiber optic cable), or electrical signals transmitted through electrical wires.
The computer-readable program instructions described herein may be downloaded from a computer-readable storage medium to a respective computing/processing device, or to an external computer or external storage device via a network, such as the internet, a local area network, a wide area network, and/or a wireless network. The network may include copper transmission cables, fiber optic transmission, wireless transmission, routers, firewalls, switches, gateway computers and/or edge servers. The network adapter card or network interface in each computing/processing device receives computer-readable program instructions from the network and forwards the computer-readable program instructions for storage in a computer-readable storage medium in the respective computing/processing device.
The computer program instructions for carrying out operations of the present disclosure may be assembler instructions, Instruction Set Architecture (ISA) instructions, machine-related instructions, microcode, firmware instructions, state setting data, or source or object code written in any combination of one or more programming languages, including an object oriented programming language such as Smalltalk, C + + or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The computer-readable program instructions may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or the connection may be made to an external computer (for example, through the Internet using an Internet service provider). In some embodiments, the electronic circuitry that can execute the computer-readable program instructions implements aspects of the present disclosure by utilizing the state information of the computer-readable program instructions to personalize the electronic circuitry, such as a programmable logic circuit, a Field Programmable Gate Array (FPGA), or a Programmable Logic Array (PLA).
Various aspects of the present disclosure are described herein with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the disclosure. It will be understood that each block of the flowchart illustrations and/or block diagrams, and combinations of blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer-readable program instructions.
These computer-readable program instructions may be provided to a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions/acts specified in the flowchart and/or block diagram block or blocks. These computer-readable program instructions may also be stored in a computer-readable storage medium that can direct a computer, programmable data processing apparatus, and/or other devices to function in a particular manner, such that the computer-readable medium storing the instructions comprises an article of manufacture including instructions which implement the function/act specified in the flowchart and/or block diagram block or blocks.
The computer readable program instructions may also be loaded onto a computer, other programmable data processing apparatus, or other devices to cause a series of operational steps to be performed on the computer, other programmable apparatus or other devices to produce a computer implemented process such that the instructions which execute on the computer, other programmable apparatus or other devices implement the functions/acts specified in the flowchart and/or block diagram block or blocks.
The flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present disclosure. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of instructions, which comprises one or more executable instructions for implementing the specified logical function(s). In some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
Having described embodiments of the present disclosure, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The terms used herein were chosen in order to best explain the principles of the embodiments, the practical application, or technical improvements to the techniques in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.
Claims (10)
1. A method of controlling the speed of a motor, the method comprising:
acquiring the current value of the motor in the running process of the motor;
determining a target voltage value corresponding to the current value according to a predetermined corresponding relation between the current value and the voltage value of the motor, wherein the corresponding relation comprises a corresponding relation between the current value and the voltage value when the motor keeps a target rotating speed;
and adjusting the voltage of the motor to the target voltage value, so that the motor runs at the target rotating speed.
2. The motor speed control method according to claim 1, wherein the correspondence relationship includes being determined in the following manner:
adjusting the voltage of the motor and keeping the motor at the target rotating speed;
in the adjusting process, measuring a current value corresponding to each voltage value in the adjusted voltage values;
and determining the corresponding relation according to the voltage values and the current values corresponding to the voltage values.
3. The motor rotation speed control method according to claim 1, wherein the correspondence relationship further includes a correspondence relationship between a current value and a voltage value in a state where the motor maintains the target rotation speed and the motor torque is a specific torque value.
4. A method for controlling a rotational speed of a motor according to claim 3, wherein before determining the target voltage value corresponding to the current value based on a predetermined correspondence relationship between current values and voltage values of the motor, the method further comprises:
acquiring a current torque value of the motor;
and determining the corresponding relation according to the current torque value and the target rotating speed.
5. A method of controlling the rotational speed of a motor according to claim 3, wherein the correspondence relationship includes being determined in the following manner:
adjusting the voltage of the motor and keeping the motor at the target rotating speed, and controlling the motor torque to be kept at the specific torque value;
in the adjusting process, measuring a current value corresponding to each voltage value in the adjusted voltage values;
and determining the corresponding relation according to the voltage values and the current values corresponding to the voltage values.
6. The method according to claim 2 or 5, wherein the determining the correspondence relationship based on the voltage values and the current values corresponding to the voltage values includes:
fitting to obtain a corresponding relation curve of the current value and the voltage value according to the voltage values and the current values corresponding to the voltage values;
and determining a corresponding relation between the current value and the voltage value according to the corresponding relation curve.
7. The method of claim 6, wherein determining the target voltage value corresponding to the current value according to the predetermined correspondence between the current value and the voltage value of the motor comprises:
and substituting the current value into the corresponding relational expression, and calculating to obtain a corresponding voltage value as the target voltage value.
8. A motor speed control method as claimed in claim 2, wherein said adjusting the voltage of the motor and maintaining the motor at the target speed comprises:
and regulating the voltage of the motor by using a voltage stabilizing source and keeping the motor at the target rotating speed.
9. A motor speed control method as claimed in claim 1, wherein said adjusting the voltage of the motor to the target voltage value to operate the motor at the target speed comprises:
determining a specific duty ratio of the motor according to the current value of the motor in one period;
and setting the duty ratio of the motor to be the specific duty ratio, and adjusting the voltage of the motor to the target voltage value to enable the motor to operate at the target rotating speed.
10. A motor rotation speed control apparatus for performing the motor rotation speed control method according to any one of claims 1 to 9, comprising:
the current acquisition unit is configured to acquire the current value of the motor in the operation process of the motor;
the processing unit is configured to determine a target voltage value corresponding to the current value according to a predetermined corresponding relation between the current value and the voltage value of the motor, wherein the corresponding relation comprises a corresponding relation between the current value and the voltage value when the motor keeps a target rotating speed; and adjusting the voltage of the motor to the target voltage value, so that the motor runs at the target rotating speed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010583066.3A CN113839605B (en) | 2020-06-23 | 2020-06-23 | Motor rotation speed control method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010583066.3A CN113839605B (en) | 2020-06-23 | 2020-06-23 | Motor rotation speed control method and device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113839605A true CN113839605A (en) | 2021-12-24 |
| CN113839605B CN113839605B (en) | 2024-03-15 |
Family
ID=78964136
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010583066.3A Active CN113839605B (en) | 2020-06-23 | 2020-06-23 | Motor rotation speed control method and device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113839605B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115122157A (en) * | 2022-08-15 | 2022-09-30 | 河南万国智能数控有限公司 | Tapping drill screw tap anomaly detection device punches |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102522946A (en) * | 2012-01-06 | 2012-06-27 | 神华集团有限责任公司 | Method, device and system for controlling fan motor |
| US20160173007A1 (en) * | 2014-12-11 | 2016-06-16 | Hyundai Motor Company | Method and system for controlling electrical vacuum pump |
| CN105703684A (en) * | 2016-03-16 | 2016-06-22 | 广州视源电子科技股份有限公司 | Control method and system for compressor startup |
| CN106059440A (en) * | 2016-05-31 | 2016-10-26 | 维沃移动通信有限公司 | Mobile terminal vibration motor control method and mobile terminal |
| CN107078674A (en) * | 2015-01-28 | 2017-08-18 | 株式会社东芝 | Control device for inverter and motor driven systems |
| CN107241045A (en) * | 2017-07-31 | 2017-10-10 | 广东威灵电机制造有限公司 | Permanent-magnetic synchronous motor stator Flux Observation Method, flux observer and storage medium |
| CN107528517A (en) * | 2016-06-15 | 2017-12-29 | 三菱电机株式会社 | The control method of electric rotating machine |
| CN107896081A (en) * | 2017-11-27 | 2018-04-10 | 奥克斯空调股份有限公司 | Current control process and device, motor drive control method and device |
| CN109672372A (en) * | 2018-12-18 | 2019-04-23 | 深圳和而泰小家电智能科技有限公司 | A kind of method, apparatus, electronic equipment and storage medium adjusting motor speed |
| CN110190794A (en) * | 2019-04-12 | 2019-08-30 | 北京航天发射技术研究所 | The calculation method and device of internal permanent magnet synchronous motor given value of current value |
-
2020
- 2020-06-23 CN CN202010583066.3A patent/CN113839605B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102522946A (en) * | 2012-01-06 | 2012-06-27 | 神华集团有限责任公司 | Method, device and system for controlling fan motor |
| US20160173007A1 (en) * | 2014-12-11 | 2016-06-16 | Hyundai Motor Company | Method and system for controlling electrical vacuum pump |
| DE102015218925A1 (en) * | 2014-12-11 | 2016-06-16 | Hyundai Motor Company | Method and system for controlling an electric vacuum pump |
| CN107078674A (en) * | 2015-01-28 | 2017-08-18 | 株式会社东芝 | Control device for inverter and motor driven systems |
| CN105703684A (en) * | 2016-03-16 | 2016-06-22 | 广州视源电子科技股份有限公司 | Control method and system for compressor startup |
| CN106059440A (en) * | 2016-05-31 | 2016-10-26 | 维沃移动通信有限公司 | Mobile terminal vibration motor control method and mobile terminal |
| CN107528517A (en) * | 2016-06-15 | 2017-12-29 | 三菱电机株式会社 | The control method of electric rotating machine |
| CN107241045A (en) * | 2017-07-31 | 2017-10-10 | 广东威灵电机制造有限公司 | Permanent-magnetic synchronous motor stator Flux Observation Method, flux observer and storage medium |
| CN107896081A (en) * | 2017-11-27 | 2018-04-10 | 奥克斯空调股份有限公司 | Current control process and device, motor drive control method and device |
| CN109672372A (en) * | 2018-12-18 | 2019-04-23 | 深圳和而泰小家电智能科技有限公司 | A kind of method, apparatus, electronic equipment and storage medium adjusting motor speed |
| CN110190794A (en) * | 2019-04-12 | 2019-08-30 | 北京航天发射技术研究所 | The calculation method and device of internal permanent magnet synchronous motor given value of current value |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115122157A (en) * | 2022-08-15 | 2022-09-30 | 河南万国智能数控有限公司 | Tapping drill screw tap anomaly detection device punches |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113839605B (en) | 2024-03-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9690345B2 (en) | Power consumption control in computer system | |
| CN105673540B (en) | The rotation speed regulating method of fan, the adjustment of rotational speed system of device and fan | |
| CN113839605B (en) | Motor rotation speed control method and device | |
| US10545515B2 (en) | Virtualized fan speed measurement | |
| CN109108967B (en) | Motor compensation method, driver, mechanical arm joint module and mechanical arm | |
| CN113374001B (en) | Excavator rotating speed control method and device | |
| EP3761125B1 (en) | Ensuring data consistency between a modular device and a control device | |
| Talanov et al. | Implementation of extended Kalman filtering algorithm with improved flux estimator on TMS320F28335 processor for induction sensorless drive | |
| CN112630515A (en) | Current sampling method, device and system and unmanned aerial vehicle | |
| CN112593777A (en) | Motor control method of intelligent door lock and intelligent door lock | |
| CN116650979A (en) | Aircraft control method and device | |
| CN112398406B (en) | Motor operation control method and device, storage medium and electronic equipment | |
| CN109032853B (en) | Method and device for controlling FPGA card group | |
| US20180364656A1 (en) | One-click motor configuration | |
| CN106842927B (en) | Control parameter adjusting method and device and double-wheel self-balancing robot | |
| US11237606B2 (en) | System parameter trace and test coverage optimization in a computer system | |
| US11507158B2 (en) | Electrical design current throttling | |
| CN111948610B (en) | Radar control method and equipment | |
| CN115733421A (en) | Noise reduction method, control device and air blowing cylinder | |
| CN116414471A (en) | Working parameter adjusting method, host, display card, electronic equipment and storage medium | |
| CN117424502A (en) | Motor, motor operation control method and motor operation control device | |
| CN113131826B (en) | Method and device for controlling motor operation, terminal equipment and storage medium | |
| CN114900616B (en) | Direct current motor driving device and method for photovoltaic camera | |
| CN116167528A (en) | Unmanned aerial vehicle weight prediction method, unmanned aerial vehicle weight prediction device and storage medium | |
| CN116720847A (en) | Nuclear power equipment maintenance task period determining method and device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |