CN114094791A - High-precision brushless direct current motor - Google Patents
High-precision brushless direct current motor Download PDFInfo
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- CN114094791A CN114094791A CN202111245983.1A CN202111245983A CN114094791A CN 114094791 A CN114094791 A CN 114094791A CN 202111245983 A CN202111245983 A CN 202111245983A CN 114094791 A CN114094791 A CN 114094791A
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- microprocessor
- direct current
- brushless direct
- brushless
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- 230000002159 abnormal effect Effects 0.000 claims abstract description 50
- 238000001514 detection method Methods 0.000 claims abstract description 41
- 238000000819 phase cycle Methods 0.000 claims description 8
- 238000004891 communication Methods 0.000 claims description 7
- 230000006386 memory function Effects 0.000 claims description 3
- 238000004458 analytical method Methods 0.000 abstract description 3
- 238000012795 verification Methods 0.000 abstract description 3
- 230000005856 abnormality Effects 0.000 description 11
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910001172 neodymium magnet Inorganic materials 0.000 description 2
- 229910052761 rare earth metal Inorganic materials 0.000 description 2
- 150000002910 rare earth metals Chemical class 0.000 description 2
- QJVKUMXDEUEQLH-UHFFFAOYSA-N [B].[Fe].[Nd] Chemical compound [B].[Fe].[Nd] QJVKUMXDEUEQLH-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K29/00—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices
- H02K29/14—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with speed sensing devices
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
- H02K11/26—Devices for sensing voltage, or actuated thereby, e.g. overvoltage protection devices
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
- H02K11/27—Devices for sensing current, or actuated thereby
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
The invention relates to a high-precision brushless direct current motor, wherein a microprocessor is arranged in a brushless direct current motor body, the microprocessor is electrically connected with a driving circuit of the brushless direct current motor, a detection module detects the driving abnormity, the rotating speed, the current and the voltage of the brushless direct current motor body to generate a detection signal corresponding to the driving circuit abnormity, the rotating speed, the current or the voltage, the microprocessor receives the detection signal of the detection module and stores the detection signal in a nonvolatile memory module, and when the microprocessor judges that the brushless direct current motor body is in an abnormal operation state, the microprocessor generates abnormal operation data comprising error codes so that the nonvolatile memory module automatically stores the abnormal operation data. The invention has the advantages that: the detailed information of the previous abnormal conditions and the current abnormal conditions of the brushless direct current motor body is rapidly acquired, verification and analysis are not required to be tried for many times, and labor cost and time cost are saved.
Description
Technical Field
The invention relates to the technical field of motor equipment, in particular to a high-precision brushless direct current motor.
Background
The brushless direct current motor is composed of a motor main body and a driver, and is a typical electromechanical integration product. Because the brushless DC motor is operated in a self-control mode, a starting winding is not additionally arranged on a rotor like a synchronous motor which is started under the condition of heavy load under the condition of frequency conversion and speed regulation, and oscillation and step-out can not be generated when the load suddenly changes. The permanent magnet of the brushless DC motor with medium and small capacity is mostly made of rare earth neodymium iron boron (Nd-Fe-B) material with high magnetic energy level. Therefore, the volume of the rare earth permanent magnet brushless motor is reduced by one machine seat number compared with that of a same-capacity three-phase asynchronous motor.
Although the brushless direct current motor is good in use, if abnormal faults occur, the brushless direct current motor is not easy to detect, a large inspection test needs to be carried out, the problem of the equipment is clear, the problem can be solved and processed in time, and a new technology is provided after the equipment is repaired.
Disclosure of Invention
The invention aims to solve the problems and provides a high-precision brushless direct current motor which can accurately and timely provide fault information and is convenient to maintain.
In order to solve the technical problems, the technical scheme provided by the invention is as follows: a high-precision brushless DC motor comprises a brushless DC motor body, a microprocessor is arranged in the brushless DC motor body, the microprocessor is electrically connected with a drive circuit of the brushless DC motor and comprises a detection module, a nonvolatile memory module, a display module and a communication module, the detection module comprises a phase sequence abnormity detection unit, a rotating speed detection unit, a current detection unit and a voltage detection unit, the detection module detects the drive abnormity, the rotating speed, the current and the voltage of the brushless direct current motor body, to generate a detection signal corresponding to the abnormality of the driving circuit, the rotation speed, the current or the voltage, the microprocessor receiving the detection signal of the detection module and storing it in the non-volatile memory module, when the microprocessor judges that the brushless direct current motor body is in a normal operation state, the microprocessor calculates the operation time; when the microprocessor judges that the brushless direct current motor body is in an abnormal operation state, the microprocessor generates abnormal operation data comprising error codes at the same time so that the nonvolatile memory module automatically stores the abnormal operation data; the microprocessor estimates the service time of the bearing of the brushless direct current motor body according to the accumulated running time, converts the service time into the utilization rate, and determines the service life of the bearing according to the utilization rate, and the display module is connected to the microprocessor and used for displaying the service time, the service life and the running state of the bearing.
After adopting the structure, the invention has the following advantages: the bearing service life of the brushless direct current motor body is detected, so that the running quality of the brushless direct current motor is guaranteed, the detailed information of the previous abnormal conditions and the current abnormal conditions of the brushless direct current motor body is rapidly acquired by reading the abnormal operation data stored in the nonvolatile memory module, the verification and analysis are not required to be tried for many times, the labor cost and the time cost are saved, the production efficiency is improved, and the product quality is improved.
As an improvement, the microprocessor adds the recorded running time to the previous accumulated running time to update the accumulated running time.
As an improvement, when the microprocessor determines that the usage rate is greater than the critical rate value, the microprocessor generates an alarm indication, which is stored in the non-volatile memory module.
As an improvement, the microprocessor is provided with a power-off memory function, and after the accumulated running time is updated, the brushless direct current motor is restarted after waiting for a period of time, and the accumulated running time is loaded.
As an improvement, the abnormal operation state comprises starting abnormality, operation abnormality, overcurrent abnormality, overvoltage abnormality, motor phase sequence abnormality, current limiting abnormality or power supply abnormality.
As an improvement, the abnormal operation data is transmitted to an external system terminal through a communication module, and the external system terminal may be one of a cloud server, a database, a workstation, a notebook computer and a portable intelligent device.
Drawings
Fig. 1 is a block diagram of a high-precision brushless dc motor according to the present invention.
As shown in the figure: 1. brushless DC motor body, 2, microprocessor, 3, drive circuit, 4, detection module, 5, nonvolatile memory module, 6, display module, 7, communication module.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
With reference to fig. 1, a high-precision brushless dc motor includes a brushless dc motor body 1, a microprocessor 2 is disposed in the brushless dc motor body 1, the microprocessor 2 is electrically connected to a driving circuit 3 of the brushless dc motor body 1, the microprocessor 2 includes a detection module 4, a nonvolatile memory module 5, a display module 6, and a communication module 7, the detection module 4 includes a phase sequence abnormality detection unit, a rotation speed detection unit, a current detection unit, and a voltage detection unit, and the detection module 4 detects driving abnormality, rotation speed, current, and voltage of the brushless dc motor to generate a detection signal corresponding to the driving circuit abnormality, the rotation speed, the current, or the voltage; when the microprocessor 2 receives detection signals such as drive abnormity, rotating speed, current or voltage and the like from the detection module 4, whether the brushless direct current motor body 1 is in an abnormal operation state is further judged, wherein the abnormal operation state can be one of motor phase sequence abnormity, overvoltage abnormity, overcurrent abnormity, starting state abnormity, operation state abnormity, current limiting abnormity and power failure abnormity; the microprocessor 2 receives the detection signal of the detection module 4 and stores the detection signal in the nonvolatile memory module 5, and when the microprocessor 2 judges that the brushless direct current motor body 1 is in a normal operation state, the microprocessor 2 calculates the operation time; when the microprocessor 2 judges that the brushless direct current motor body 1 is in an abnormal operation state, the microprocessor 2 generates abnormal operation data comprising error codes, wherein the error codes comprise one of starting abnormal information, operation abnormal information, overcurrent abnormal information, overvoltage abnormal information, motor phase sequence abnormal information, current limiting abnormal information and power failure abnormal information according to the type of the abnormal operation data, so that the nonvolatile memory module 5 automatically stores the abnormal operation data; the microprocessor 2 estimates the service time of the bearing of the brushless direct current motor body 1 according to the accumulated running time, converts the service time into the utilization rate, and determines the service life of the bearing according to the utilization rate, the display module 6 is connected to the microprocessor 2, and the display module 6 is used for displaying the service time, the service life and the running state of the bearing.
The microprocessor 2 adds the recorded running time to the previous accumulated running time to update the accumulated running time.
When the microprocessor 2 determines that the usage rate is greater than the critical rate value, the microprocessor 2 generates an alarm indication, which is stored in the non-volatile memory module.
The microprocessor 2 is provided with a power-off memory function.
The abnormal operation state comprises abnormal starting, abnormal operation, abnormal overcurrent, abnormal overvoltage, abnormal phase sequence of the motor, abnormal current limiting or abnormal power supply.
And the abnormal operation data is transmitted to an external system terminal through the communication module.
When the method is specifically implemented, the service time of the bearing of the brushless direct current motor body of the detection module is used, so that the running quality of the brushless direct current motor is ensured, the detailed information of the abnormal condition of the brushless direct current motor body is quickly acquired by reading the abnormal operation data stored in the nonvolatile memory module, the verification and analysis are not required to be performed for many times, the labor cost and the time cost are saved, the production efficiency is improved, and the product quality is improved.
The present invention and its embodiments have been described above, but the description is not limitative, and the actual structure is not limited thereto. In summary, those skilled in the art should appreciate that they can readily use the disclosed conception and specific embodiments as a basis for designing or modifying other structures for carrying out the same purposes of the present invention without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (6)
1. The utility model provides a high accuracy brushless DC motor, includes the brushless DC motor body, its characterized in that: the brushless direct current motor comprises a brushless direct current motor body, and is characterized in that a microprocessor is arranged in the brushless direct current motor body, the microprocessor is electrically connected with a driving circuit of the brushless direct current motor, the microprocessor comprises a detection module, a nonvolatile memory module, a display module and a communication module, the detection module comprises a phase sequence abnormity detection unit, a rotating speed detection unit, a current detection unit and a voltage detection unit, the detection module detects driving abnormity, rotating speed, current and voltage of the brushless direct current motor body to generate detection signals corresponding to driving circuit abnormity, rotating speed, current or voltage, the microprocessor receives the detection signals of the detection module and stores the detection signals in the nonvolatile memory module, and when the microprocessor judges that the brushless direct current motor body is in a normal operation state, the microprocessor calculates the operation time; when the microprocessor judges that the brushless direct current motor body is in an abnormal operation state, the microprocessor generates abnormal operation data comprising error codes at the same time so that the nonvolatile memory module automatically stores the abnormal operation data; the microprocessor estimates the service time of the bearing of the brushless direct current motor body according to the accumulated running time, converts the service time into the utilization rate, and determines the service life of the bearing according to the utilization rate, and the display module is connected to the microprocessor and used for displaying the service time, the service life and the running state of the bearing.
2. A high precision brushless dc motor according to claim 1, wherein: the microprocessor adds the recorded running time to the previous accumulated running time to update the accumulated running time.
3. A high precision brushless dc motor according to claim 1, wherein: when the microprocessor determines that the usage rate is greater than the threshold rate value, the microprocessor generates an alarm indication, which is stored in the non-volatile memory module.
4. A high precision brushless dc motor according to claim 1, wherein: the microprocessor is provided with a power-off memory function.
5. A high precision brushless dc motor according to claim 1, wherein: the abnormal operation state comprises abnormal starting, abnormal operation, abnormal overcurrent, abnormal overvoltage, abnormal phase sequence of the motor, abnormal current limiting or abnormal power supply.
6. A high precision brushless dc motor according to claim 1, wherein: and the abnormal operation data is transmitted to an external system terminal through the communication module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111245983.1A CN114094791A (en) | 2021-10-26 | 2021-10-26 | High-precision brushless direct current motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111245983.1A CN114094791A (en) | 2021-10-26 | 2021-10-26 | High-precision brushless direct current motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114094791A true CN114094791A (en) | 2022-02-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111245983.1A Pending CN114094791A (en) | 2021-10-26 | 2021-10-26 | High-precision brushless direct current motor |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007135369A (en) * | 2005-11-14 | 2007-05-31 | Nikkiso Co Ltd | Bearing wear supervisory system of motor |
| CN101213436A (en) * | 2005-07-13 | 2008-07-02 | 西门子公司 | Interface module of an electric motor for calculating the service life of a bearing |
| CN101860127A (en) * | 2010-05-07 | 2010-10-13 | 中国石化集团南京化学工业有限公司 | Running protecting and monitoring diagnosis system of motor |
| CN105359045A (en) * | 2013-06-29 | 2016-02-24 | 依必安-派特圣乔根有限责任两合公司 | Assembly for estimating the service life of an electric motor |
| CN111157890A (en) * | 2018-11-07 | 2020-05-15 | 台达电子工业股份有限公司 | DC brushless motor capable of automatically recording abnormal operation and method thereof |
| CN111684710A (en) * | 2018-02-21 | 2020-09-18 | 株式会社安川电机 | Motor control system, motor control device, and bearing life diagnosis method |
-
2021
- 2021-10-26 CN CN202111245983.1A patent/CN114094791A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101213436A (en) * | 2005-07-13 | 2008-07-02 | 西门子公司 | Interface module of an electric motor for calculating the service life of a bearing |
| JP2007135369A (en) * | 2005-11-14 | 2007-05-31 | Nikkiso Co Ltd | Bearing wear supervisory system of motor |
| CN101860127A (en) * | 2010-05-07 | 2010-10-13 | 中国石化集团南京化学工业有限公司 | Running protecting and monitoring diagnosis system of motor |
| CN105359045A (en) * | 2013-06-29 | 2016-02-24 | 依必安-派特圣乔根有限责任两合公司 | Assembly for estimating the service life of an electric motor |
| CN111684710A (en) * | 2018-02-21 | 2020-09-18 | 株式会社安川电机 | Motor control system, motor control device, and bearing life diagnosis method |
| CN111157890A (en) * | 2018-11-07 | 2020-05-15 | 台达电子工业股份有限公司 | DC brushless motor capable of automatically recording abnormal operation and method thereof |
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Application publication date: 20220225 |
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