CN111130418A - Method and device for detecting angular speed of rotor of permanent magnet synchronous motor - Google Patents
Method and device for detecting angular speed of rotor of permanent magnet synchronous motor Download PDFInfo
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- CN111130418A CN111130418A CN201911349194.5A CN201911349194A CN111130418A CN 111130418 A CN111130418 A CN 111130418A CN 201911349194 A CN201911349194 A CN 201911349194A CN 111130418 A CN111130418 A CN 111130418A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P23/00—Arrangements or methods for the control of AC motors characterised by a control method other than vector control
- H02P23/0004—Control strategies in general, e.g. linear type, e.g. P, PI, PID, using robust control
- H02P23/0018—Control strategies in general, e.g. linear type, e.g. P, PI, PID, using robust control using neural networks
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P25/00—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details
- H02P25/02—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the kind of motor
- H02P25/022—Synchronous motors
- H02P25/024—Synchronous motors controlled by supply frequency
- H02P25/026—Synchronous motors controlled by supply frequency thereby detecting the rotor position
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P2203/00—Indexing scheme relating to controlling arrangements characterised by the means for detecting the position of the rotor
- H02P2203/03—Determination of the rotor position, e.g. initial rotor position, during standstill or low speed operation
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Artificial Intelligence (AREA)
- Evolutionary Computation (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
- Control Of Ac Motors In General (AREA)
Abstract
The invention provides a method and a device for detecting the angular speed of a rotor of a permanent magnet synchronous motor. The method comprises the following steps: acquiring various parameters of a motor in real time; acquiring historical parameters to be calculated, establishing a parameter screening model according to the historical parameters to be calculated, putting various parameters of the motor into the parameter screening model, screening various parameters of the motor through the parameter screening model, and taking the screened parameters as the parameters to be calculated; and establishing a neural network algorithm, calculating parameters to be calculated according to the neural network algorithm, and acquiring the rotor angular speed of the permanent magnet synchronous motor according to the calculation result. According to the method, the parameter screening model is established through the historical parameters to be calculated, the motor parameters acquired in real time can be screened through the parameter screening model, the parameters meeting the requirements are screened for calculation, and then the final rotor angular speed is calculated through a neural network algorithm.
Description
Technical Field
The invention relates to the technical field of permanent magnet synchronous motor control, in particular to a method and a device for detecting the angular speed of a permanent magnet synchronous motor rotor.
Background
The motor is widely applied to the fields of household appliances, industrial automation equipment, electric vehicles and the like. In the motor application process, the speed of a motor rotor is required to be detected, speed information is measured by installing a sensor on a motor rotating shaft, however, after the time is long, the sensor can have errors in speed measurement, and the accuracy of the speed cannot be guaranteed. Therefore, there is a need for a method that can achieve accurate measurement of velocity without the installation of sensors.
The above is only for the purpose of assisting understanding of the technical aspects of the present invention, and does not represent an admission that the above is prior art.
Disclosure of Invention
In view of this, the invention provides a method and a device for detecting the angular speed of a rotor of a permanent magnet synchronous motor, and aims to solve the technical problem that the prior art cannot realize accurate measurement of the speed without installing a sensor.
The technical scheme of the invention is realized as follows:
on one hand, the invention provides a method for detecting the angular speed of a rotor of a permanent magnet synchronous motor, which comprises the following steps:
s1, acquiring various parameters of the motor in real time;
s2, acquiring historical parameters to be calculated, establishing a parameter screening model according to the historical parameters to be calculated, putting various parameters of the motor into the parameter screening model, screening the various parameters of the motor through the parameter screening model, and taking the screened parameters as the parameters to be calculated;
and S3, establishing a neural network algorithm, calculating the parameters to be calculated according to the neural network algorithm, and acquiring the rotor angular speed of the permanent magnet synchronous motor according to the calculation result.
On the basis of the above technical solution, preferably, in step S1, obtaining parameters of the motor in real time further includes the following steps: flux linkage, current, voltage, inductance, resistance, and torque.
On the basis of the above technical solution, preferably, in step S2, the method includes obtaining the historical parameters to be calculated, and establishing a parameter screening model according to the historical parameters to be calculated, and further includes the steps of obtaining the historical parameters to be calculated, establishing different parameter ranges according to the historical parameters to be calculated, and establishing the parameter screening model according to the different parameter ranges.
On the basis of the technical scheme, preferably, all the parameters of the motor are placed in a parameter screening model, all the parameters of the motor are screened through the parameter screening model, and the screened parameters are used as parameters to be calculated; and when the motor parameter does not meet the parameter range, marking the corresponding motor parameter and warning a user.
On the basis of the above technical solution, preferably, in step 3, a neural network algorithm is established, the parameter to be calculated is calculated according to the neural network algorithm, and the angular velocity of the rotor of the permanent magnet synchronous motor is obtained according to the calculation result.
On the basis of the above technical solution, preferably, the method further includes the following steps, and the neural network algorithm is:
where ω represents the rotor angular velocity of the PMSM, k represents the number of parameters, TsRepresenting the electromagnetic torque of the stator of the motor, B representing the coefficient of rotational friction, J representing the coefficient of moment of inertia, p representing the number of pole pairs of the motor, psifRepresents a magnetic linkage, iβ(k) Representing β coordinate system current, iα(k) Representing α coordinate system current, TLRepresenting the motor electromagnetic torque.
On the basis of the above technical solution, preferably, the calculation result is compared with an angular velocity threshold, and when the calculation result is greater than the angular velocity threshold, the calculation result is used as the angular velocity of the rotor of the permanent magnet synchronous motor, and then the method further includes the steps of obtaining the historical angular velocity of the rotor of the motor, obtaining a numerical range of the historical angular velocity of the rotor according to the historical angular velocity of the rotor of the motor, judging the angular velocity of the rotor of the permanent magnet synchronous motor according to the numerical range of the historical angular velocity of the rotor of the motor, and sending an alarm to a worker when the angular velocity of the rotor of the permanent magnet synchronous motor does not satisfy the numerical range of the historical angular.
Still further preferably, the device for detecting an angular velocity of a rotor of a permanent magnet synchronous motor includes:
the acquisition module is used for acquiring various parameters of the motor in real time;
the data screening module is used for acquiring historical parameters to be calculated, establishing a parameter screening model according to the historical parameters to be calculated, putting various parameters of the motor into the parameter screening model, screening various parameters of the motor through the parameter screening model, and taking the screened parameters as the parameters to be calculated;
and the calculation module is used for establishing a neural network algorithm, calculating the parameters to be calculated according to the neural network algorithm, and acquiring the rotor angular speed of the permanent magnet synchronous motor according to the calculation result.
In a second aspect, the method for detecting the angular speed of the rotor of the permanent magnet synchronous motor further comprises a device, and the device comprises: the device comprises a memory, a processor and a permanent magnet synchronous motor rotor angular speed detection method program stored on the memory and capable of running on the processor, wherein the permanent magnet synchronous motor rotor angular speed detection method program is configured to realize the steps of the permanent magnet synchronous motor rotor angular speed detection method.
In a third aspect, the method for detecting the angular velocity of the rotor of the permanent magnet synchronous motor further includes a medium, where the medium is a computer medium, and the computer medium stores a program of a method for detecting the angular velocity of the rotor of the permanent magnet synchronous motor, and the program of the method for detecting the angular velocity of the rotor of the permanent magnet synchronous motor realizes the steps of the method for detecting the angular velocity of the rotor of the permanent magnet synchronous motor when executed by a processor.
Compared with the prior art, the method for detecting the angular speed of the rotor of the permanent magnet synchronous motor has the following beneficial effects:
(1) the method comprises the steps of establishing a parameter screening model according to historical parameters to be calculated, screening various parameters of the motor by using the parameter screening model, and finally obtaining the parameters to be calculated, so that error data can be eliminated, and the accuracy of a subsequent calculation process is improved;
(2) through the neural network algorithm, the angular speed of the motor rotor can be calculated more accurately, then the real-time state of the motor can be judged according to the historical angular speed of the motor rotor, early warning is timely carried out on a user, and user experience is improved.
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 drawings without creative efforts.
FIG. 1 is a schematic diagram of an apparatus in a hardware operating environment according to an embodiment of the present invention;
fig. 2 is a schematic flow chart of a method for detecting an angular velocity of a rotor of a permanent magnet synchronous motor according to a first embodiment of the present invention;
fig. 3 is a functional module diagram of a method for detecting an angular velocity of a rotor of a permanent magnet synchronous motor according to a first embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
As shown in fig. 1, the apparatus may include: a processor 1001, such as a Central Processing Unit (CPU), a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. Wherein a communication bus 1002 is used to enable connective communication between these components. The user interface 1003 may include a Display screen (Display), an input unit such as a Keyboard (Keyboard), and the optional user interface 1003 may also include a standard wired interface, a wireless interface. The network interface 1004 may optionally include a standard wired interface, a WIreless interface (e.g., a WIreless-FIdelity (WI-FI) interface). The Memory 1005 may be a Random Access Memory (RAM) Memory, or may be a Non-Volatile Memory (NVM), such as a disk Memory. The memory 1005 may alternatively be a storage device separate from the processor 1001.
Those skilled in the art will appreciate that the configuration shown in fig. 1 does not constitute a limitation of the device, and that in actual implementations the device may include more or less components than those shown, or some components may be combined, or a different arrangement of components.
As shown in fig. 1, a memory 1005 as one medium may include an operating system, a network communication module, a user interface module, and a permanent magnet synchronous motor rotor angular velocity detection method program therein.
In the apparatus shown in fig. 1, the network interface 1004 is mainly used for establishing a communication connection between the apparatus and a server storing all data required in the system of the method for detecting the angular velocity of the rotor of the permanent magnet synchronous motor; the user interface 1003 is mainly used for data interaction with a user; the processor 1001 and the memory 1005 of the device for detecting the angular velocity of the rotor of the permanent magnet synchronous motor according to the present invention may be disposed in the device for detecting the angular velocity of the rotor of the permanent magnet synchronous motor, and the device for detecting the angular velocity of the rotor of the permanent magnet synchronous motor calls the program for detecting the angular velocity of the rotor of the permanent magnet synchronous motor stored in the memory 1005 through the processor 1001, and executes the method for detecting the angular velocity of the rotor of the permanent magnet synchronous motor according to the present invention.
Referring to fig. 2, fig. 2 is a schematic flow chart of a method for detecting an angular velocity of a rotor of a permanent magnet synchronous motor according to a first embodiment of the present invention.
In this embodiment, the method for detecting the angular speed of the rotor of the permanent magnet synchronous motor includes the following steps:
s10: and acquiring various parameters of the motor in real time.
It should be understood that a permanent magnet synchronous motor is a synchronous motor which is excited by permanent magnets to generate synchronous rotating magnetic fields, the permanent magnets serve as rotors to generate rotating magnetic fields, and three-phase stator windings react through armatures under the action of the rotating magnetic fields to induce three-phase symmetrical currents. At the moment, the kinetic energy of the rotor is converted into electric energy, and the permanent magnet synchronous motor is used as a generator; in addition, when three-phase symmetrical current is introduced to the stator side, the three-phase stator current generates a rotating magnetic field in the space due to the fact that the phase difference of the three-phase stator is 120 in the space position, the rotor rotates under the action of electromagnetic force to move, electric energy is converted into kinetic energy at the moment, and the permanent magnet synchronous motor serves as a motor.
It should be understood that the system will obtain the parameters of the motor in real time for calculating the angular speed of the rotor of the motor, and the parameters of the motor include: flux linkage, current, voltage, inductance, resistance, and torque, such that parameters can be directly obtained by the motor.
S20: the method comprises the steps of obtaining historical parameters to be calculated, establishing a parameter screening model according to the historical parameters to be calculated, putting various parameters of the motor into the parameter screening model, screening various parameters of the motor through the parameter screening model, and taking the screened parameters as the parameters to be calculated.
It should be understood that after the system acquires various parameters of the motor, since the parameters may have error data or invalid data, if the parameters are directly brought into the calculation, the calculation result may be inaccurate, and at the same time, the calculation amount may be increased, and more resources are occupied, so that the acquired motor parameters need to be screened, so that the final calculation result is more accurate.
It should be understood that the system may acquire historical parameters to be calculated, establish different parameter ranges according to the historical parameters to be calculated, establish parameter screening models for screening the parameters by using the different parameter ranges, directly bring the acquired motor parameters into subsequent calculation if the system does not acquire the historical parameters to be calculated, delete unreasonable calculation results according to the standard rotor angular speed of the network motor, retain calculation results meeting requirements, and take the motor parameters corresponding to the calculation results meeting the requirements as the historical parameters to be calculated.
It should be understood that the system puts various parameters of the motor into the parameter screening model, screens various parameters of the motor according to different parameter ranges, and screens out corresponding motor parameters as parameters to be calculated when the motor parameters meet the parameter ranges; when the motor parameters do not meet the parameter range, marking the corresponding motor parameters and giving a warning to a user, wherein the system can record the number of the abnormal parameters at the moment, and if the number of the abnormal parameters is in a preset range, the abnormal parameters are normal numerical deviation; if the number of the abnormal parameters does not meet the preset range, the motor is possibly in a problem, and a user is required to overhaul the motor.
S30: and establishing a neural network algorithm, calculating parameters to be calculated according to the neural network algorithm, and acquiring the rotor angular speed of the permanent magnet synchronous motor according to the calculation result.
It should be understood that the system establishes a neural network algorithm, sets an angular velocity threshold, calculates parameters to be calculated according to the neural network algorithm, obtains a calculation result, compares the calculation result with the angular velocity threshold, and uses the calculation result as the angular velocity of the rotor of the permanent magnet synchronous motor when the calculation result is greater than the angular velocity threshold.
It should be understood that after the system calculates the real-time rotor angular velocity of the motor, the system can also obtain the historical rotor angular velocity of the motor, obtain the historical rotor angular velocity numerical range according to the historical rotor angular velocity of the motor, judge the rotor angular velocity of the permanent magnet synchronous motor according to the historical rotor angular velocity numerical range, when the rotor angular velocity of the permanent magnet synchronous motor does not meet the historical rotor angular velocity numerical range, send an alarm to a worker, judge the real-time running state of the motor through the mode, when the rotor angular velocity cannot meet the historical angular velocity range, it indicates that the motor may have a fault, a user needs to check the motor, and user experience is improved.
It should be understood that the neural network algorithm is:
where ω represents the rotor angular velocity of the PMSM, k represents the number of parameters, TsRepresenting the electromagnetic torque of the stator of the motor, B representing the coefficient of rotational friction, J representing the coefficient of moment of inertia, p representing the number of pole pairs of the motor, psifRepresents a magnetic linkage, iβ(k) Representing β coordinate system current, iα(k) Representing α coordinate system current, TLRepresenting the motor electromagnetic torque.
The above description is only for illustrative purposes and does not limit the technical solutions of the present application in any way.
As can be easily found from the above description, the present embodiment obtains various parameters of the motor in real time; acquiring historical parameters to be calculated, establishing a parameter screening model according to the historical parameters to be calculated, putting various parameters of the motor into the parameter screening model, screening various parameters of the motor through the parameter screening model, and taking the screened parameters as the parameters to be calculated; and establishing a neural network algorithm, calculating parameters to be calculated according to the neural network algorithm, and acquiring the rotor angular speed of the permanent magnet synchronous motor according to the calculation result. According to the method, the parameter screening model is established through the historical parameters to be calculated, the motor parameters acquired in real time can be screened through the parameter screening model, the parameters meeting the requirements are screened for calculation, and then the final rotor angular speed is calculated through a neural network algorithm.
In addition, the embodiment of the invention also provides a device for detecting the angular speed of the rotor of the permanent magnet synchronous motor. As shown in fig. 3, the device for detecting the angular velocity of the rotor of the permanent magnet synchronous motor includes: the system comprises an acquisition module 10, a data screening module 20 and a calculation module 30.
The acquisition module 10 is used for acquiring various parameters of the motor in real time;
the data screening module 20 is used for acquiring historical parameters to be calculated, establishing a parameter screening model according to the historical parameters to be calculated, putting various parameters of the motor into the parameter screening model, screening various parameters of the motor through the parameter screening model, and taking the screened parameters as the parameters to be calculated;
and the calculation module 30 is configured to establish a neural network algorithm, calculate the parameters to be calculated according to the neural network algorithm, and obtain the angular speed of the rotor of the permanent magnet synchronous motor according to the calculation result.
In addition, it should be noted that the above-described embodiments of the apparatus are merely illustrative, and do not limit the scope of the present invention, and in practical applications, a person skilled in the art may select some or all of the modules to implement the purpose of the embodiments according to actual needs, and the present invention is not limited herein.
In addition, the technical details that are not described in detail in this embodiment may be referred to a method for detecting an angular velocity of a rotor of a permanent magnet synchronous motor provided in any embodiment of the present invention, and are not described herein again.
Furthermore, an embodiment of the present invention further provides a medium, where the medium is a computer medium, where a permanent magnet synchronous motor rotor angular velocity detection method program is stored on the computer medium, and when executed by a processor, the permanent magnet synchronous motor rotor angular velocity detection method program implements the following operations:
s1, acquiring various parameters of the motor in real time;
s2, acquiring historical parameters to be calculated, establishing a parameter screening model according to the historical parameters to be calculated, putting various parameters of the motor into the parameter screening model, screening the various parameters of the motor through the parameter screening model, and taking the screened parameters as the parameters to be calculated;
and S3, establishing a neural network algorithm, calculating the parameters to be calculated according to the neural network algorithm, and acquiring the rotor angular speed of the permanent magnet synchronous motor according to the calculation result.
Further, when executed by a processor, the method for detecting the angular speed of the rotor of the permanent magnet synchronous motor further realizes the following operations:
the parameters of the motor comprise: flux linkage, current, voltage, inductance, resistance, and torque.
Further, when executed by a processor, the method for detecting the angular speed of the rotor of the permanent magnet synchronous motor further realizes the following operations:
obtaining historical parameters to be calculated, establishing different parameter ranges according to the historical parameters to be calculated, and establishing a parameter screening model according to the different parameter ranges.
Further, when executed by a processor, the method for detecting the angular speed of the rotor of the permanent magnet synchronous motor further realizes the following operations:
placing various parameters of the motor into a parameter screening model, screening various parameters of the motor according to different parameter ranges, and screening out corresponding motor parameters as parameters to be calculated when the motor parameters meet the parameter ranges; and when the motor parameter does not meet the parameter range, marking the corresponding motor parameter and warning a user.
Further, when executed by a processor, the method for detecting the angular speed of the rotor of the permanent magnet synchronous motor further realizes the following operations:
establishing a neural network algorithm, setting an angular velocity threshold, calculating parameters to be calculated according to the neural network algorithm to obtain a calculation result, comparing the calculation result with the angular velocity threshold, and taking the calculation result as the angular velocity of the permanent magnet synchronous motor rotor when the calculation result is greater than the angular velocity threshold.
Further, when executed by a processor, the method for detecting the angular speed of the rotor of the permanent magnet synchronous motor further realizes the following operations:
the neural network algorithm is as follows:
where ω represents the rotor angular velocity of the PMSM, k represents the number of parameters, TsRepresenting the electromagnetic torque of the stator of the motor, B representing the coefficient of rotational friction, J representing the coefficient of moment of inertia, p representing the number of pole pairs of the motor, psifRepresents a magnetic linkage, iβ(k) Representing β coordinate system current, iα(k) Representing α coordinate system current, TLRepresenting the motor electromagnetic torque.
Further, when executed by a processor, the method for detecting the angular speed of the rotor of the permanent magnet synchronous motor further realizes the following operations:
the method comprises the steps of obtaining historical rotor angular speed of a motor, obtaining a historical rotor angular speed numerical range according to the historical rotor angular speed of the motor, judging the rotor angular speed of the permanent magnet synchronous motor according to the historical rotor angular speed numerical range, and sending an alarm to a worker when the rotor angular speed of the permanent magnet synchronous motor does not meet the historical rotor angular speed numerical range.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. A method for detecting the angular speed of a rotor of a permanent magnet synchronous motor is characterized by comprising the following steps: comprises the following steps;
s1, acquiring various parameters of the motor in real time;
s2, acquiring historical parameters to be calculated, establishing a parameter screening model according to the historical parameters to be calculated, putting various parameters of the motor into the parameter screening model, screening the various parameters of the motor through the parameter screening model, and taking the screened parameters as the parameters to be calculated;
and S3, establishing a neural network algorithm, calculating the parameters to be calculated according to the neural network algorithm, and acquiring the rotor angular speed of the permanent magnet synchronous motor according to the calculation result.
2. The method for detecting the angular speed of the rotor of the permanent magnet synchronous motor according to claim 1, wherein: in step S1, obtaining parameters of the motor in real time, further including the following steps: flux linkage, current, voltage, inductance, resistance, and torque.
3. The method for detecting the angular speed of the rotor of the permanent magnet synchronous motor according to claim 2, characterized in that: in step S2, the method includes obtaining a history parameter to be calculated, and establishing a parameter screening model according to the history parameter to be calculated, and further includes the steps of obtaining the history parameter to be calculated, establishing different parameter ranges according to the history parameter to be calculated, and establishing the parameter screening model according to the different parameter ranges.
4. The method for detecting the angular speed of the rotor of the permanent magnet synchronous motor according to claim 3, characterized in that: placing various parameters of the motor into a parameter screening model, screening various parameters of the motor through the parameter screening model, and taking the screened parameters as parameters to be calculated; and when the motor parameter does not meet the parameter range, marking the corresponding motor parameter and warning a user.
5. The method for detecting the angular speed of the rotor of the permanent magnet synchronous motor according to claim 4, wherein: and 3, establishing a neural network algorithm, calculating parameters to be calculated according to the neural network algorithm, and acquiring the angular speed of the rotor of the permanent magnet synchronous motor according to the calculation result.
6. The method for detecting the angular speed of the rotor of the permanent magnet synchronous motor according to claim 5, wherein: the method further comprises the following steps that:
where ω represents the rotor angular velocity of the PMSM, k represents the number of parameters, TsRepresenting the electromagnetic torque of the stator of the motor, B representing the coefficient of rotational friction, J representing the coefficient of moment of inertia, p representing the number of pole pairs of the motor, psifRepresents a magnetic linkage, iβ(k) Representing β coordinate system current, iα(k) Representing α coordinate system current, TLRepresenting the motor electromagnetic torque.
7. The method for detecting the angular speed of the rotor of the permanent magnet synchronous motor according to claim 5, wherein: and comparing the calculation result with an angular velocity threshold, and when the calculation result is greater than the angular velocity threshold, taking the calculation result as the angular velocity of the rotor of the permanent magnet synchronous motor, and further comprising the following steps of obtaining the historical angular velocity of the rotor of the motor, obtaining the numerical range of the historical angular velocity of the rotor according to the historical angular velocity of the rotor of the motor, judging the angular velocity of the rotor of the permanent magnet synchronous motor according to the numerical range of the historical angular velocity of the rotor, and sending an alarm to a worker when the angular velocity of the rotor of the permanent magnet synchronous motor does not meet the numerical range of the historical angular velocity of the rotor.
8. The utility model provides a PMSM rotor angular velocity detection device which characterized in that, PMSM rotor angular velocity detection device includes:
the acquisition module is used for acquiring various parameters of the motor in real time;
the data screening module is used for acquiring historical parameters to be calculated, establishing a parameter screening model according to the historical parameters to be calculated, putting various parameters of the motor into the parameter screening model, screening various parameters of the motor through the parameter screening model, and taking the screened parameters as the parameters to be calculated;
and the calculation module is used for establishing a neural network algorithm, calculating the parameters to be calculated according to the neural network algorithm, and acquiring the rotor angular speed of the permanent magnet synchronous motor according to the calculation result.
9. An apparatus, characterized in that the apparatus comprises: a memory, a processor and a permanent magnet synchronous motor rotor angular velocity detection method program stored on the memory and executable on the processor, the permanent magnet synchronous motor rotor angular velocity detection method program being configured to implement the steps of the permanent magnet synchronous motor rotor angular velocity detection method according to any one of claims 1 to 7.
10. A medium, characterized in that the medium is a computer medium having stored thereon a permanent magnet synchronous motor rotor angular velocity detection method program that, when executed by a processor, implements the steps of the permanent magnet synchronous motor rotor angular velocity detection method according to any one of claims 1 to 7.
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| CN201911349194.5A CN111130418A (en) | 2019-12-24 | 2019-12-24 | Method and device for detecting angular speed of rotor of permanent magnet synchronous motor |
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| CN201911349194.5A CN111130418A (en) | 2019-12-24 | 2019-12-24 | Method and device for detecting angular speed of rotor of permanent magnet synchronous motor |
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| CN105591582A (en) * | 2014-10-23 | 2016-05-18 | 比亚迪股份有限公司 | Method and device for controlling permanent magnet synchronous motor |
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- 2019-12-24 CN CN201911349194.5A patent/CN111130418A/en active Pending
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| CN105591582A (en) * | 2014-10-23 | 2016-05-18 | 比亚迪股份有限公司 | Method and device for controlling permanent magnet synchronous motor |
| CN107956731A (en) * | 2017-11-30 | 2018-04-24 | 中国大唐集团科学技术研究院有限公司西北分公司 | The Forecasting Methodology that the change of Air Cooling Fan for Power Station frequency influences unit back pressuce parameter |
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