CN117526239A - Motor control method, control device and motor - Google Patents
Motor control method, control device and motor Download PDFInfo
- Publication number
- CN117526239A CN117526239A CN202311473517.8A CN202311473517A CN117526239A CN 117526239 A CN117526239 A CN 117526239A CN 202311473517 A CN202311473517 A CN 202311473517A CN 117526239 A CN117526239 A CN 117526239A
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- 238000000034 method Methods 0.000 title claims abstract description 40
- 230000004044 response Effects 0.000 claims description 17
- 238000004590 computer program Methods 0.000 claims description 12
- 238000004458 analytical method Methods 0.000 description 7
- 230000003111 delayed effect Effects 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 2
- 238000003672 processing method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
- H02H7/0811—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors for dc motors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
- H02H7/0833—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors for electric motors with control arrangements
- H02H7/0844—Fail safe control, e.g. by comparing control signal and controlled current, isolating motor on commutation error
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- Control Of Electric Motors In General (AREA)
- Motor And Converter Starters (AREA)
Abstract
The invention provides a control method and a control device of a motor and the motor, wherein the control method comprises the following steps: judging whether the motor has faults or not under the condition that the motor is powered up again after power failure; and under the condition that the motor fails once, carrying out delay protection on the motor. And judging whether the motor has faults or not under the condition that the motor is powered up again after power failure, if the motor has faults, carrying out delay protection on the motor, and controlling the starting time of the motor so as to achieve the purpose of protecting circuits and devices. The motor is protected in a time delay mode, the motor can be prevented from being electrified immediately when the power is turned off, whether the motor has faults or not is judged firstly, and whether the motor is directly started or not is selected according to a judging result, so that electric appliance damage caused by the fact that the motor is electrified immediately after the power is turned off is avoided.
Description
Technical Field
The invention relates to the technical field of electric control, in particular to a motor control method, a motor control device and a motor.
Background
At present, the external driving direct current motor is started again after the motor fails, and the restarting is allowed only when a certain downtime is met, but if the motor is powered down and powered up again, the motor is not limited by the downtime, so that the control circuit and devices are not protected.
In the prior art, the situation that the motor is powered down and then powered up is only aimed at fault treatment, so that protection of an electric appliance is realized, but the fault generation mode is various, and the fault treatment is difficult to comprehensively carry out. Therefore, how to provide a control method for a motor, which is capable of performing delayed start in response to a fault, so as to protect a control circuit and devices of the motor is a problem to be solved at present.
Disclosure of Invention
The invention aims to provide a motor control method, a motor control device and a motor, and the motor control method, the motor control device and the motor control device control the starting time of the motor by analyzing fault information so as to achieve the purpose of protecting circuits and devices.
In order to achieve the above object, the present invention provides a control method of a motor, the control method comprising: judging whether the motor has faults or not under the condition that the motor is powered up again after power failure; and under the condition that the motor fails once, carrying out delay protection on the motor.
According to the invention, whether the motor has faults or not is judged under the condition that the motor is powered up again after power failure, and if the motor has faults, the motor is subjected to delay protection. The motor is protected in a time-delay manner, so that the motor can be prevented from being electrified immediately when the power is off, whether the motor has a fault is judged firstly, and then whether the motor is directly started is selected according to a judging result, so that the damage to an electric appliance caused by the fact that the motor is electrified immediately after the power is off is avoided, the starting time of the motor is controlled through the analysis of the fault condition of the motor, and the purposes of protecting a circuit and devices are achieved.
In any of the above technical solutions, before the delay protection is performed on the motor, the control method further includes: and controlling the chip of the motor to reset automatically.
Before the delay protection of the motor, the chip of the motor needs to be controlled to reset automatically so as to avoid the circuit disorder caused by entering a random state after power-on; the circuit can be guaranteed to return to a normal state from an error state by controlling the motor chip to reset, errors generated by subsequently recording information or data are reduced, and stable running of delay protection is guaranteed. The chip reset after power-up can return the stored data to a default state, and the data to the program is comprehensively restarted to ensure that new contents are read.
In any of the above technical solutions, the control method further includes: in the case that the motor has not failed, the motor is controlled to start in response to the start command.
Under the condition that the motor is powered on again after power failure, the motor is judged to have no fault, and then the motor is controlled to be started directly in response to a starting instruction without delay protection. By judging whether the motor fails after power failure or not and controlling whether the motor performs delay protection or not, the motor can select the next step to perform according to the situation of the motor, and the selectivity of the delay protection operation of the motor is realized. Under the condition of no fault, the motor is directly controlled to operate according to the user setting, so that unnecessary delay protection operation is avoided, energy consumption is reduced, power-on time is shortened, and the whole delay protection system is more intelligent.
In any of the above technical solutions, the control method further includes: when the motor fails, storing failure information of the motor in a target area in a chip of the motor; judging whether the motor has failed or not, comprising the following steps: and judging whether the motor has failed or not by reading the content of the target area.
Judging that the motor has failed under the condition that the motor is powered up again after power failure, and storing the failure information of the motor identified by the system in a target area in a chip of the motor; when the motor is in control failure again, the failure information recorded in the target area of the chip is compared with the current information, whether the motor has failed once is judged, and whether the current information is recorded in the target area of the motor chip or not is further controlled by the motor according to the judging result.
In any of the above solutions, the fault information includes a fault time; when the motor fails, the failure information of the motor is stored in a target area in a chip of the motor, and the method specifically comprises the following steps: when the motor fails for the first time, the failure time is stored in a target area; and/or when the motor fails for the first time, the stored failure time in the target area is erased, and the time for sending the failure for the first time is taken as the failure time and updated and stored in the target area.
When the motor fails, failure information of the motor is stored in a target area in a chip of the motor, failure time belongs to one of the failure information, the failure time represents the interval time between the time point when the failure occurs and the current recorded time point, and the failure time is determined according to the recorded time point, so that the failure time of the motor is stored in the target area of the chip. When the motor fails for the first time, the failure time is stored in a target area of the chip, so that the existing failure information of the motor can be compared with the failure information in the target area when the motor fails for the next time; when the motor fails for the first time, deleting the original failure time stored in the target area, and storing the received time of the first time failure in the target area as the failure time, so as to achieve the purpose of updating the stored content in the target area.
In any of the above technical solutions, the delay protection includes: determining the fault time when the motor fails last time; and determining the time for starting the motor according to the fault time.
When the motor breaks down, after the fault time is recorded in a target area of the chip, the motor updates the current fault time in real time according to the recorded fault time, then the system determines the time for starting the motor according to the fault time, and the motor is started by time delay, so that the aim of protecting a motor control circuit and devices is fulfilled. If the current fault time meets the condition of delay protection, directly starting the motor; if the current fault time does not meet the condition of delay protection, the delay is needed to be continued to meet the condition of delay protection, and then the motor is started.
In any of the above technical solutions, determining the time for starting the motor according to the fault time specifically includes: comparing the fault time with a time threshold; under the condition that the fault time is greater than or equal to a time threshold value, the motor is controlled to start in response to a starting instruction; and under the condition that the fault time is smaller than the time threshold value, controlling the motor to delay the target time and then start in response to the starting command.
Comparing the fault time with a time threshold set by a system to judge whether the motor meets the condition of delay protection or not; the time threshold refers to the interval time between the time point when the fault occurs and the time point reached when the delay protection condition is satisfied. When the fault time is greater than or equal to the time threshold, the motor is directly controlled to start according to the user setting, and the starting instruction is responded, so that delay protection operation is not needed; when the fault time is smaller than the time threshold, the target time required by delay protection is required to be delayed, then the motor is controlled to be started in response to the starting instruction according to the user setting, and the starting time of the motor is controlled and prolonged through analysis of the fault time, so that the purpose of protecting the circuit and the device is achieved.
In any of the above solutions, the target time is greater than or equal to a difference between a time threshold and a subtraction of the failure time.
The target time represents the minimum time delay operation duration required by the motor for time delay protection, so that the target time is required to be set to be greater than or equal to the difference between the time threshold and the subtraction of the fault time, and the motor can control the starting time of the motor, thereby achieving the purpose of protecting circuits and devices.
The invention also provides a control device of the motor, which comprises: the identification module is used for judging whether the motor has faults or not under the condition that the motor is powered up again after power failure; and the processing module is used for carrying out delay protection on the motor under the condition that the motor fails once.
The motor control device is provided with the identification module, the identification module is used for judging whether the motor has faults or not under the condition that the motor is powered up again after power failure, and the processing module is used for carrying out delay protection on the motor if the motor has faults. The motor is protected in a time-delay manner, so that the motor can be prevented from being electrified immediately when the power is off, whether the motor has a fault is judged firstly, and then whether the motor is directly started is selected according to a judging result, so that the damage to an electric appliance caused by the fact that the motor is electrified immediately after the power is off is avoided, the starting time of the motor is controlled through the analysis of the fault condition of the motor, and the purposes of protecting a circuit and devices are achieved.
The invention also provides a motor, comprising: a memory in which a computer program is stored; and the processor realizes a control method of the motor when executing the computer program.
The memory of the motor provided by the invention stores a computer program, and the computer program comprises program codes or processing data, such as the program codes of a fault processing method of the running motor; the processor implements a method of controlling the motor by executing a computer program. By adopting the motor provided by the embodiment, the intelligent processing of faults when the motor is in driving faults can be effectively realized, and the starting time of the motor is controlled so as to protect circuits and devices.
After the technical scheme of the invention is adopted, the following technical effects can be achieved:
the invention provides a motor control method, a motor control device and a motor, which are used for judging whether the motor has faults or not under the condition that the motor is powered up again after power failure, and carrying out delay protection on the motor if the motor has faults. The motor is protected in a time-delay manner, so that the motor can be prevented from being electrified immediately when the power is off, whether the motor has a fault is judged firstly, and then whether the motor is directly started is selected according to a judging result, so that the damage to an electric appliance caused by the fact that the motor is electrified immediately after the power is off is avoided, the starting time of the motor is controlled through the analysis of the fault condition of the motor, and the purposes of protecting a circuit and devices are achieved.
Drawings
The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
fig. 1 is a schematic flow chart of a control method of a motor according to an embodiment of the present invention;
fig. 2 is a flow chart of a control method of a motor according to an embodiment of the present invention.
Detailed Description
In order that the above-recited objects, features and advantages of the present invention will become more apparent, a more particular description of embodiments of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The embodiment of the invention provides a control method of a motor, which comprises the following steps: judging whether the motor has faults or not under the condition that the motor is powered up again after power failure; and under the condition that the motor fails once, carrying out delay protection on the motor.
At present, the external drive direct current motor is controlled to be started again after the failure occurs, and the restarting is allowed only when a certain downtime is met, but if the motor is powered down and powered up again, the downtime is not limited, so that the control circuit and devices are not protected.
According to the invention, whether the motor has faults or not is judged under the condition that the motor is powered up again after power failure, and if the motor has faults, the motor is subjected to delay protection. The motor is protected in a time-delay manner, so that the motor can be prevented from being electrified immediately when the power is off, whether the motor has a fault is judged firstly, and then whether the motor is directly started is selected according to a judging result, so that the damage to an electric appliance caused by the fact that the motor is electrified immediately after the power is off is avoided, the starting time of the motor is controlled through the analysis of the fault condition of the motor, and the purposes of protecting a circuit and devices are achieved.
In some embodiments of the present application, before the delay protection of the motor, the control method further includes: and controlling the chip of the motor to reset automatically.
Before the delay protection of the motor, the chip of the motor needs to be controlled to reset automatically so as to avoid the circuit disorder caused by entering a random state after power-on; the circuit can be guaranteed to return to a normal state from an error state by controlling the motor chip to reset, errors generated by subsequently recording information or data are reduced, and stable running of delay protection is guaranteed. The chip reset after power-up can return the stored data to a default state, and the data to the program is comprehensively restarted to ensure that new contents are read.
In some embodiments of the present application, the control method further includes: in the case that the motor has not failed, the motor is controlled to start in response to the start command.
Under the condition that the motor is powered on again after power failure, the motor is judged to have no fault, and then the motor is controlled to be started directly in response to a starting instruction without delay protection. By judging whether the motor fails after power failure or not and controlling whether the motor performs delay protection or not, the motor can select the next step to perform according to the situation of the motor, and the selectivity of the delay protection operation of the motor is realized. Under the condition of no fault, the motor is directly controlled to operate according to the user setting, so that unnecessary delay protection operation is avoided, energy consumption is reduced, power-on time is shortened, and the whole delay protection system is more intelligent.
In some embodiments of the present application, the control method further includes: when the motor fails, storing failure information of the motor in a target area in a chip of the motor; judging whether the motor has failed or not, comprising the following steps: and judging whether the motor has failed or not by reading the content of the target area.
Judging that the motor has failed under the condition that the motor is powered up again after power failure, and storing the failure information of the motor identified by the system in a target area in a chip of the motor; when the motor is in control failure again, the failure information recorded in the target area of the chip is compared with the current information, whether the motor has failed once is judged, and whether the current information is recorded in the target area of the motor chip or not is further controlled by the motor according to the judging result. The fault information may be the time, state of the fault occurrence.
In some embodiments of the present application, the fault information includes a fault time; when the motor fails, the failure information of the motor is stored in a target area in a chip of the motor, and the method specifically comprises the following steps: when the motor fails for the first time, the failure time is stored in a target area; and/or when the motor fails for the first time, the stored failure time in the target area is erased, and the time for sending the failure for the first time is taken as the failure time and updated and stored in the target area.
When the motor fails, failure information of the motor is stored in a target area in a chip of the motor, failure time belongs to one of the failure information, the failure time represents the interval time between the time point when the failure occurs and the current recorded time point, and the failure time is determined according to the recorded time point, so that the failure time of the motor is stored in the target area of the chip. Specifically, when the motor fails for the first time, the failure time is stored in a target area of the chip, so that the existing failure information of the motor can be compared with the failure information in the target area when the motor control failure occurs next time; when the motor fails for the first time, deleting the original failure time stored in the target area, and storing the received time of the first time failure in the target area as the failure time, so as to achieve the purpose of updating the stored content in the target area.
As shown in fig. 1, first S110: control motor operation, then S120: judging whether the motor fails, if so, S130: and judging whether fault information exists in the target area. When it is determined that there is no fault information in the target area, S131: storing the current fault information in a target area of the motor chip; when it is determined that there is fault information in the target area, first S140: the original fault information in the target area is cleared, and then S141: and storing the current fault information in a target area of the motor chip.
In some embodiments of the present application, the delay protection includes: determining the fault time when the motor fails last time; and determining the time for starting the motor according to the fault time.
When the motor breaks down, after the fault time is recorded in a target area of the chip, the motor updates the current fault time in real time according to the recorded fault time, then the system determines the time for starting the motor according to the fault time, and the motor is started by time delay, so that the aim of protecting a motor control circuit and devices is fulfilled. If the current fault time meets the condition of delay protection, directly starting the motor; if the current fault time does not meet the condition of delay protection, the delay is needed to be continued to meet the condition of delay protection, and then the motor is started.
In some embodiments of the present application, determining a time to start the motor according to the failure time specifically includes: comparing the fault time with a time threshold; under the condition that the fault time is greater than or equal to a time threshold value, the motor is controlled to start in response to a starting instruction; and under the condition that the fault time is smaller than the time threshold value, controlling the motor to delay the target time and then start in response to the starting command.
Comparing the fault time with a time threshold set by a system to judge whether the motor meets the condition of delay protection or not; the time threshold refers to the interval time between the time point when the fault occurs and the time point reached when the delay protection condition is satisfied. Specifically, when the fault time is greater than or equal to the time threshold, the motor is directly controlled to start according to the user setting and responding to the starting instruction, and delay protection operation is not needed; when the fault time is smaller than the time threshold, the target time required by delay protection is required to be delayed, then the motor is controlled to be started in response to the starting instruction according to the user setting, and the starting time of the motor is controlled and prolonged through analysis of the fault time, so that the purpose of protecting the circuit and the device is achieved.
Specifically, the failure time Δt is compared with the time threshold T Protection of If Deltat is greater than or equal to T Protection of The motor is directly started according to the user setting; if Deltat < T Protection of The motor is subjected to delay operation and then started according to user setting; wherein the failure time Deltat is the time point t of failure Failure of From the current point in time t now Is defined as the difference of Δt=t now -t Failure of 。
In some embodiments of the present application, the target time is greater than or equal to a difference between a time threshold and a subtraction of the failure time.
The target time represents the minimum time delay operation duration required by the motor for time delay protection, so that the target time is required to be set to be greater than or equal to the difference between the time threshold and the subtraction of the fault time, and the motor can control the starting time of the motor, thereby achieving the purpose of protecting circuits and devices. Specifically, the duration of the delay operation, i.e., the target time T Protection of -△t。
As shown in fig. 2, first S210: control the motor to start up, then S220: control the motor chip to reset by oneself, S230: and reading fault information in the target area. S240: judging whether the motor has fault information, and when judging that the motor has fault information, S241: the motor is controlled to be started in response to the starting instruction; when it is determined that the motor does not have the fault information, further S250: judging whether the fault time is smaller than the time threshold, if not, S251: the control motor starts in response to the start command, and if the failure time is less than the time threshold, S260: the target time is prolonged. Further, S270: judging whether the delay meets the target time, and when the delay meets the target time, S271: the control motor is started in response to the start command.
The embodiment of the invention also provides a control device of the motor, which comprises: the identification module is used for judging whether the motor has faults or not under the condition that the motor is powered up again after power failure; and the processing module is used for carrying out delay protection on the motor under the condition that the motor fails once.
The motor control device is provided with the identification module, the identification module is used for judging whether the motor has faults or not under the condition that the motor is powered up again after power failure, and the processing module is used for carrying out delay protection on the motor if the motor has faults. The motor is protected in a time-delay manner, so that the motor can be prevented from being electrified immediately when the power is off, whether the motor has a fault is judged firstly, and then whether the motor is directly started is selected according to a judging result, so that the damage to an electric appliance caused by the fact that the motor is electrified immediately after the power is off is avoided, the starting time of the motor is controlled through the analysis of the fault condition of the motor, and the purposes of protecting a circuit and devices are achieved.
The embodiment of the invention also provides a motor, which comprises: a memory in which a computer program is stored; and the processor realizes a control method of the motor when executing the computer program.
The memory of the motor provided by the invention stores a computer program, and the computer program comprises program codes or processing data, such as the program codes of a fault processing method of the running motor; the processor implements a method of controlling the motor by executing a computer program. By adopting the motor provided by the embodiment, the intelligent processing of faults when the motor is in driving faults can be effectively realized, and the starting time of the motor is controlled so as to protect circuits and devices.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A control method of an electric motor, characterized by comprising:
judging whether the motor has faults or not under the condition that the motor is powered up again after power failure;
and under the condition that the motor fails, carrying out delay protection on the motor.
2. The control method according to claim 1, characterized in that before the delay protection of the motor, the control method further comprises:
and controlling the chip of the motor to reset automatically.
3. The control method according to claim 1, characterized in that the control method further comprises:
and controlling the motor to start in response to a starting command under the condition that the motor does not fail.
4. A control method according to any one of claim 1 to 3,
the control method further includes:
when the motor fails, storing the failure information of the motor in a target area in a chip of the motor;
the judging whether the motor has failed or not specifically comprises:
and judging whether the motor has faults or not by reading the content of the target area.
5. The control method according to claim 4, characterized in that the failure information includes a failure time; when the motor fails, the failure information of the motor is stored in a target area in a chip of the motor, and the method specifically comprises the following steps:
storing the fault time in the target area when the motor fails for the first time; and/or
And when the motor fails for the non-first time, erasing the stored failure time in the target area, taking the time for transmitting the non-first failure as the failure time, and updating and storing the time in the target area.
6. A control method according to any one of claims 1 to 3, characterized in that the delay protection comprises:
determining the fault time when the motor fails last time;
and determining the time for starting the motor according to the fault time.
7. The control method according to claim 6, wherein the determining the time to start the motor based on the failure time specifically includes:
comparing the fault time with a time threshold;
controlling the motor to start in response to a start command under the condition that the fault time is greater than or equal to the time threshold;
and under the condition that the fault time is smaller than the time threshold, controlling the motor to delay the target time and then start in response to a start command.
8. The control method according to claim 7, characterized in that the target time is greater than or equal to a difference between the time threshold and a subtraction of the failure time.
9. A control apparatus of an electric motor employing the control method according to any one of claims 1 to 8, characterized by comprising:
the identification module is used for judging whether the motor has faults or not under the condition that the motor is powered up again after the motor is powered down;
and the processing module is used for carrying out delay protection on the motor under the condition that the motor fails once.
10. An electric machine, comprising:
a memory in which a computer program is stored;
a processor implementing the control method according to any one of claims 1 to 8 when executing the computer program.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311473517.8A CN117526239A (en) | 2023-11-07 | 2023-11-07 | Motor control method, control device and motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311473517.8A CN117526239A (en) | 2023-11-07 | 2023-11-07 | Motor control method, control device and motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117526239A true CN117526239A (en) | 2024-02-06 |
Family
ID=89748800
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311473517.8A Pending CN117526239A (en) | 2023-11-07 | 2023-11-07 | Motor control method, control device and motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117526239A (en) |
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2023
- 2023-11-07 CN CN202311473517.8A patent/CN117526239A/en active Pending
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