CN109830939A - A kind of control method and system of rotor revolving speed - Google Patents
A kind of control method and system of rotor revolving speed Download PDFInfo
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- CN109830939A CN109830939A CN201910229155.5A CN201910229155A CN109830939A CN 109830939 A CN109830939 A CN 109830939A CN 201910229155 A CN201910229155 A CN 201910229155A CN 109830939 A CN109830939 A CN 109830939A
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Abstract
The present invention relates to motor control technology fields, and it discloses the control methods and system of a kind of rotor revolving speed, comprising the following steps: S1, the operation information for obtaining rotor in real time；S2, the operation information according to acquisition, determine the need for the power supply of cutting motor, when the speed revolution value of acquisition is less than setting value 1, first, the supply voltage and electric current of reduction motor are simultaneously delayed, when the time for reducing supply voltage and electric current being greater than the predetermined time, the speed revolution value and setting value 2 that will acquire again compare.When the speed revolution value of acquisition and equal setting value 2, initialization restores motor normal power supply；When the speed revolution value of acquisition is less than setting value 2, the power supply of motor is cut off.According to above technical scheme, when impeller in actual use, when barrier moment is blocked so that wheel speed reduces, motor will not be made accidentally to be braked；Only when impeller is when blocking, revolving speed is continued to decline, and at this time by motor braking, prevents motor burning.
Description
Technical field
The present invention relates to motor control technology fields, more specifically, it relates to a kind of controlling party of rotor revolving speed
Method and system.
Background technique
Motor refers to a kind of calutron that electric energy conversion or transmitting are realized according to the law of electromagnetic induction.Motor is in circuit
It is to be indicated with letter M, its main function is to generate driving torque, and as the power source of various machinery, its main function is
Mechanical energy is converted into using electric energy.
Current motor is when driving wheel rotation on being applied to chimney, since impeller may block barrier at work
And motor is caused to burn.Therefore, this is solved the problems, such as in the prior art, mainly by setting speed probe, is passed by revolving speed
Sensor removes the revolving speed of detection impeller, when speed probe senses the revolving speed decline of impeller, then disconnects the power supply of motor.
However, the above-mentioned method cut off the power is in actual application process, since practical chimney is in smoke evacuation, in chimney
It has been easy to large volume of barrier, when barrier is discharged from chimney position, impeller has been touched, will lead to turning for impeller
Fast moment declines certain speed, and then when chimney is discharged in barrier, wheel speed reforms into original revolving speed.When being equipped with
When above-mentioned speed probe system, the revolving speed decline of moment, can also be led when speed probe perceives barrier discharge chimney
The dump of machine is sent a telegraph, so that people is needed to go to open motor again, it is more troublesome.
Summary of the invention
For proposing to will lead to the skill that motor is accidentally cut off the power when wheel speed is when declining in background technique
Art problem.
The first object of the present invention is to provide a kind of method for controlling rotor revolving speed, by carrying out to operation information
Detection and analysis, when operation information is abnormal, decompression drop stream and the certain time that is delayed, be detected and analyzed again, when turn
When quick-recovery is normal, restore the voltage rating and electric current of motor, to achieve the purpose that prevent accidentally braking motor.
The second object of the present invention is to provide a kind of system for controlling rotor revolving speed, detects mould by setting information
Block, memory module, motor control module, Data Analysis Services module and alarm module, collectively form hardware system, with operation
With the control method for completing above-mentioned rotor speed.
To realize above-mentioned first purpose, the present invention provides the following technical scheme that
A kind of control method of rotor revolving speed, comprising the following steps:
S1, the operation information for obtaining rotor in real time；
S2, the operation information that will acquire are compared with setting value 1；
When the operation information of acquisition is equal with setting value 1, motor normal power supply is kept；
When the operation information of acquisition is less than setting value 1；
Firstly, reducing the supply voltage and electric current of motor, and predetermined hold-time；
When the time for reducing supply voltage and electric current being greater than the predetermined time, the operation information and setting value 2 that will acquire compare；
When the operation information and equal setting value 2 that a. obtain, restore motor normal power supply；
B. when the operation information obtained is less than setting value 2, the power supply of motor is cut off；
Wherein, setting value 1 refers to motor normal specified velocity of rotation number of motor under voltage rating/rated current in the S2
Value or current value, setting value 2 refers to the normal velocity of rotation number of motor under voltage and current of the motor after reduction in the S2
Value or current value.
Above-mentioned motor is direct current generator, and direct current generator is mainly used for driving wheel rotation, such as ceiling fan blade wheel structure.It is logical
Above-mentioned technical proposal is crossed, when ceiling fan touches barrier during rotation, the revolving speed of ceiling fan impeller declines, in order to protect
Direct current generator is not burnt, and the supply current of direct current generator and voltage reduce in ceiling fan.Then whether measurement ceiling fan continues again
By the inhibition of barrier, if continuing to be hindered effect, the power supply of motor is cut off, ceiling fan is tieed up
It repairs.If the inhibition that ceiling fan is subject to excludes, the supply voltage and electric current of motor are replied, electric fan can be worked normally.
The present invention is further arranged to: the operation information of the rotor obtained in the S1 is that impeller rotates speed in real time
Spend information and/or current value.
Through the above technical solutions, the operation information of motor can have real-time velocity of rotation and/or current value of impeller etc.
Many forms, therefore, in order to which the revolving speed to rotor controls, the type according to control operation information is different, can
With there are many implementations.
The present invention is further arranged to: the control method further include: S3, according to analyze and processing operation information result
Judge whether to issue alarm command；
When the operation information is less than setting value 1, the first alarm command is issued；
When the operation information is less than setting value 2, the second alarm command is issued.
Through the above technical solutions, when wheel speed is less than normal setting value 1, under illustrating the revolving speed of impeller
Drop prompts the velocity of rotation of people's impeller abnormal, it may be possible to be hindered effect to issue the first alarm command.Work as impeller
When revolving speed is continuously less than normal setting value 2, illustrate that the revolving speed of impeller continues to decline, and issue the second alarm command, prompter
Impeller receive lasting inhibition, need to repair.
The present invention is further arranged to: first alarm command and the second alarm command are set as sound-light alarm or number
Warning information alarm.
Through the above technical solutions, setting sound-light alarm or digital warning information alarm, main function are to mention
Wake up operating personnel.
To realize above-mentioned second purpose, the present invention provides the following technical scheme that
A kind of control system of rotor revolving speed, comprising:
Information detecting module, for obtaining operation information and the output of rotor in real time；
Memory module, and the information detecting module data connection, and for storing the setting value 1 and the setting value 2；
Motor control module, for controlling the rotary state of motor；
Data Analysis Services module, and the information detecting module and memory module data connection, and with the motor control
Module by signal connection for receiving the operation information and the setting value 1 and setting value 2, and is based on 1 He of setting value
Setting value 2 is analyzed and processed the operation information and exports control signal；
When the speed revolution value of acquisition is equal with setting value 1, output keeps the first instruction of motor normal power supply and rotation to institute
State motor control module；
When the speed revolution value of acquisition is less than setting value 1, output reduces the supply voltage of motor and the second of electric current instructs to institute
State motor control module；
After delay predetermined time, timer expiration signal is exported, controls the revolving speed number that the information detecting module obtains current motor
Value, and compared with setting value 2,
When the speed revolution value of acquisition is equal with the speed revolution value set, output initialization restores the third of motor normal power supply
It instructs to the motor control module；
When the speed revolution value of acquisition is less than the speed revolution value set, the 4th instruction of the power supply of outputting cutting power machine is extremely
The motor control module.
Through the above technical solutions, operation information of the information detecting module for acquisition rotor in real time, and will operation
Information is transmitted in Data Analysis Services module, and is compared and treated in Data Analysis Services module.Work as operation information
When compared with setting value 1 and abnormal, i.e., when rotor velocity of rotation is less than normal rotation speed or on motor
When current value is greater than the current value under normal condition, this detected status is coped with, Data Analysis Services module output second instructs,
The input voltage of motor and current buck is allowed to drop stream and the certain time that is delayed.After a period of time, operation information is carried out again
It obtains, and by the operation information compared with setting value 2, if operation information is normal, output initialization restores motor normal power supply
Third instruction, then restore the voltage rating and electric current of motor；If operation information is abnormal, the power supply electricity of outputting cutting power machine
4th instruction in source, cuts off the power supply of motor, brakes to motor.
The present invention is further arranged to: the information detecting module is configured to magnetoelectric tachometric transducer, and is installed on electricity
On the shell of machine.
Through the above technical solutions, information detecting module is configured to magnetoelectric tachometric transducer, this sensor is because having
Structure is simple, and the service life is long, and output signal is strong, and anti-interference ability is strong, not by medium influences such as oil, water mist, dusts the advantages of, at present
Most commonly used application is obtained in digital tachometric survey.
The present invention is further arranged to: the memory module is configured to RAM storage chip.
Through the above technical solutions, RAM storage chip has selectable memory capacity, people can be according to actual needs
Select the storage size RAM storage chip of several M of several k-.
The present invention is further arranged to: the Data Analysis Services module includes:
Comparator module one is configured to receive the operation information and the setting value 1 and compare, when operation information is less than
When setting value 1, the first abnormal signal is exported, when operation information is equal to setting value 1, exports the first normal signal；
Comparator module two is configured to receive the operation information and the setting value 2 and compare, when operation information is less than
When setting value 2, the second normal signal is exported, when operation information is equal to setting value 1, exports the second abnormal signal；
Time delay module is connect with the comparator module one and the equal signal of the comparator module two, is received and responded to described
First abnormal signal starts timing, after reaching scheduled duration, exports timer expiration signal, comparator module two receives and responds to
The timer expiration signal；
Output module is controlled, controls and connect with the comparator module one, comparator module two and time delay module,
When receiving first normal signal, first instruction is exported to the motor control module；When receiving
When stating the first abnormal signal, the second instruction of output to the motor control module；The time delay module is synchronous simultaneously receives first
Abnormal signal simultaneously starts timing, and after timing, time delay module exports timer expiration signal；When receiving the second normal signal
When, the third that output initialization restores motor normal power supply is instructed to the motor control module；Believe when receiving the second exception
Number when, the 4th instruction of the power supply of outputting cutting power machine is to the motor control module.
Through the above technical solutions, comparator be used for by corresponding to voltage and current on real-time operation information and motor just
Normal operation information compares, and to judge whether impeller receives inhibition, time delay module is mainly used for timing, is determining whether
When persistently receiving inhibition, need for the operation information numerical value between two time points to be compared by comparator.Meanwhile
Control output module is used to receive the signal of comparator, is then converted to instruction and is delivered to motor control module, to reach control electricity
The purpose of machine different conditions.
The present invention is further arranged to: the motor control module includes relay module one, relay module two and row
Fan motor module, for the relay module one in response to the second abnormal signal, the relay module two is different in response to first
Regular signal and the second normal signal.
Through the above technical solutions, relay module is mainly used for controlling the open/close of electrical machinery of ventilator module upper switch, with
It realizes and decompression drop stream is carried out to motor or disconnects the purpose of power supply.
The present invention is further arranged to: the control system is also configured with alarm module, the alarm module and the ratio
It is connected compared with device module one with the equal signal of the comparator module two, the alarm module is in response to second instruction and described the
Four instructions.
Through the above technical solutions, alarm module is configured to buzzer, buzzer is receiving the second instruction and the 4th finger
Different types of alarm is sounded when enabling, to achieve the purpose that warn operating personnel and operating personnel is reminded to repair.
In conclusion the invention has the following advantages:
(1) by setting Data Analysis Services module, operation information is analyzed and is handled, it can be for the operation under different situations
Information exports different instructions, determines whether motor needs to be depressured stream, if need to restore voltage and current or braking, with
Achieve the purpose that prevent from carrying out motor accidentally braking；
(2) electric in real time on motor when being the real-time velocity of rotation of impeller or measure wheel rotation by the way that operation information is arranged
Flow valuve, so as to go braking and decompression to motor to control with the two measurement method.
Detailed description of the invention
Fig. 1 is the flow diagram of control method；
Fig. 2 is the rough functional block diagram of control system；
Fig. 3 is the circuit diagram of control system；
Fig. 4 is the careful functional block diagram of control system.
Appended drawing reference: 1, information detecting module；2, memory module；3, motor control module；31, relay module one；32,
Relay module two；33, electrical machinery of ventilator module；4, Data Analysis Services module；41, comparator module one；42, comparator mould
Block two；43, time delay module；44, output module is controlled；5, alarm module.
Specific embodiment
Below with reference to examples and drawings, the present invention is described in further detail, but embodiments of the present invention are not only
It is limited to this.
It should be pointed out that motor described in the present embodiment refers to direct current generator, direct current has certain characteristic, increase or
When reducing the supply voltage and electric current of direct current generator, the revolving speed of direct current generator is enabled to obtain the change that response increases or reduces
Change.In real life, direct current generator is mainly used for driving wheel rotation, such as ceiling fan blade wheel structure.
Embodiment 1
A kind of control method of rotor revolving speed is primarily referred to as the control method of the direct current generator of control driving wheel rotation,
Such as the direct current generator in ceiling fan, direct current generator as driven impeller in chimney, in conjunction with Fig. 1 and Fig. 4 it is found that mainly including following step
It is rapid:
First step S1: obtaining the operation information of rotor in real time, and the operation information in the present embodiment refers to that impeller turns in real time
Dynamic velocity information.
Second step S2: according to the real-time velocity of rotation information of the impeller of acquisition, it is determined whether need to cut off the power supply electricity of motor
Source.Specifically, its analysis method is the speed revolution value that will acquire compared with setting value 1, setting value 1 refers to motor specified
The normal specified velocity of rotation numerical value of motor under voltage/rated current.When the speed revolution value of acquisition is equal with setting value 1, protect
Hold motor normal power supply and rotation；
When the speed revolution value of acquisition is less than setting value 1, firstly, reducing the supply voltage and electric current of motor, and it is delayed；Delay one
After fixing time, the speed revolution value and setting value 2 that will acquire compare, wherein setting value 2 refers to voltage and electricity of the motor after reduction
Flow down the normal velocity of rotation numerical value of motor.
When the speed revolution value of acquisition and equal setting value 2, initialization restores motor normal power supply；
When the speed revolution value of acquisition is less than setting value 2, the power supply of motor is cut off.
Third step S3: judged whether to issue the report of alarm command and sending according to the result for analyzing and handling operation information
Alert instruction type.S3 issues alarm and refers to that sound-light alarm or digital warning information alarm remind operating personnel.
Based on above-mentioned control method, a kind of control system of rotor revolving speed set forth below, for being used as controlling party
The hardware system of method operation, according to Fig. 2 and Fig. 4 comprising, information detecting module 1, memory module 2, motor control module
3, Data Analysis Services module 4 and alarm module 5.
Information detecting module 1, for obtaining operation information and the output of rotor in real time.In the present embodiment, preferably
For magnetoelectric tachometric transducer.
Memory module 2, and 1 data connection of information detecting module, and it is used for storage setting value 1 and setting value 2.Actually answering
With in the middle, it is preferred that realize storage using RAM chip.If data volume is little, the storage that can be directly used inside controller is empty
Between carry out data storage, as the area FLASH in single-chip microcontroller is stored.
Motor control module 3, for controlling the rotary state of motor.
Data Analysis Services module 4, and 2 data connection of information detecting module 1 and memory module, and with motor control mould
3 signal of block connection, for receiving operation information and setting value 1 and setting value 2, and based on setting value 1 and 2 pairs of setting value operations
Information is analyzed and processed and exports control signal.When the speed revolution value of acquisition is equal with setting value 1, output is keeping motor just
First for often powering and rotating instructs to motor control module.When the speed revolution value of acquisition is less than setting value 1, output reduces electricity
The supply voltage of machine and the second of electric current instruct to motor control module.
After delay predetermined time, timer expiration signal is exported, control information detecting module obtains the revolving speed number of current motor
Value, and compared with setting value 2, when the speed revolution value of acquisition is equal with the speed revolution value set, output initialization restores electricity
The third of machine normal power supply is instructed to motor control module.It is defeated when the speed revolution value of acquisition is less than the speed revolution value set
Cut off the power supply of motor out the 4th instructs to motor control module.
Specifically, Data Analysis Services module 4 includes: comparator module 1, comparator module 2 42, time delay module 43
With control output module 44.Comparator module 1 is configured to receive operation information and setting value 1 and compare, works as operation
When information is less than setting value 1, the first abnormal signal is exported, when operation information is equal to setting value 1, exports the first normal signal.
Comparator module 2 42 is configured to receive operation information and setting value 2 and compare, when operation information is less than setting value 2,
The second normal signal is exported, when operation information is equal to setting value 1, exports the second abnormal signal.
Time delay module 43 connect with comparator module 1 and the equal signal of comparator module two, receives and responds to first
Abnormal signal starts timing, after reaching scheduled duration, exports timer expiration signal, comparator module 2 42 receives and responds to count
When termination signal.Output module 44 is controlled, is controlled with comparator module 1, comparator module 2 42 and time delay module 43
Connection.When receiving the first normal signal, the first instruction of output to motor control module 3；When receiving the first abnormal signal
When, the second instruction of output to motor control module 3；Time delay module 43 is synchronous simultaneously receives the first abnormal signal and starts timing,
After timing, time delay module 43 exports timer expiration signal；When receiving the second normal signal, output initialization restores electricity
The third of machine normal power supply is instructed to motor control module 3；When receiving the second abnormal signal, the power supply of outputting cutting power machine
The 4th of power supply instructs to motor control module 3.
Motor control module 3 includes relay module 1, relay module 2 32 and electrical machinery of ventilator module 33.Relay
Device module 1 is in response to the second abnormal signal, when comparator module 2 42 issues the second abnormal signal, illustrates that electronics continues
The inhibition of external force is received, this is to need to motor power-off protection, therefore disconnect motor power supply by relay module 1
Power supply, to realize the purpose of power-off protection.Relay module 2 32 in response to the first abnormal signal and the second normal signal, when than
When issuing the first abnormal signal compared with device module 1, relay module 2 32 is closed, and reaching reduces motor supply voltage and electric current
Purpose；Meanwhile when comparator module 2 42 issues the second normal signal, illustrate that decelerating through motor is to receive interim obstruction
Effect, motor can restore the driving of normal power supply voltage and current.Therefore, setting relay module 2 32 disconnects, to restore just
The supply current of normal supply voltage sum.
Wherein, above-mentioned memory module 2, motor control module 3 and data analysis and processing module 4 are configurable to may be programmed
Its purpose of controller-chip microcontroller.
Alarm module 5 is connect with comparator module 1 and the equal signal of comparator module 2 42, and alarm module 5 is in response to
Two instructions issue information warning, allow operating personnel it can be seen that real-time operation information situation.Alarm module 5 refers in response to the 4th
It enables and issues sound-light alarm, sound-light alarm is not issued when operation information persistent anomaly, allows operation that can obviously obtain exception information,
And operation is repaired to motor.Wherein, alarm module 5 is configured to buzzer and/or LED display.
Embodiment 2
The difference is that, the operation information of the rotor obtained in the S1 is leaf between the present embodiment and embodiment 1
Corresponding current value when wheel rotation in real time.
Setting value 1 refers to the load current value of motor in S2, and setting value 2 refers to the normal electricity of motor after pressure reduction in S2
Flow valuve.It is current value measurement module by configuration information detection module 1, passes through the side of size of current of the analysis motor in rotation
Formula goes to realize the purpose for preventing accidentally braking motor.
The above is only a preferred embodiment of the present invention, protection scope of the present invention is not limited merely to above-mentioned implementation
Example, all technical solutions belonged under thinking of the present invention all belong to the scope of protection of the present invention.It should be pointed out that for the art
Those of ordinary skill for, several improvements and modifications without departing from the principles of the present invention, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (10)
1. a kind of control method of rotor revolving speed, which comprises the following steps:
S1, the operation information for obtaining rotor in real time；
S2, the operation information that will acquire are compared with setting value 1；
When the operation information of acquisition is equal with setting value 1, motor normal power supply is kept；
When the operation information of acquisition is less than setting value 1；
Firstly, reducing the supply voltage and electric current of motor, and predetermined hold-time；
When the time for reducing supply voltage and electric current being greater than the predetermined time, the operation information and setting value 2 that will acquire compare；
When the operation information and equal setting value 2 of acquisition, restore motor normal power supply；
When the operation information of acquisition is less than setting value 2, the power supply of motor is cut off；
Wherein, setting value 1 refers to motor normal specified velocity of rotation number of motor under voltage rating/rated current in the S2
Value or current value, setting value 2 refers to the normal velocity of rotation number of motor under voltage and current of the motor after reduction in the S2
Value or current value.
2. control method according to claim 1, it is characterised in that: the operation information of the rotor obtained in the S1
The current value powered for the real-time velocity of rotation information of rotor and/or motor.
3. control method according to claim 2, it is characterised in that: the control method further include: S3, according to the S2
The result of middle analysis and processing operation information judges whether to issue alarm command；
When the operation information is less than setting value 1, the first alarm command is issued；
When the operation information is less than setting value 2, the second alarm command is issued.
4. control method according to claim 1, it is characterised in that: first alarm command and the second alarm command are set
It is set to sound-light alarm or digital warning information alarm.
5. a kind of control system of rotor revolving speed, special based on the control method as described in claim 1-4 any one
Sign is, comprising:
Information detecting module (1), for obtaining operation information and the output of rotor in real time；
Memory module (2), for storing the setting value 1 and the setting value 2；
Motor control module (3), for controlling the rotary state of motor；
Data Analysis Services module (4), and the information detecting module (1) and memory module (2) data connection, and with it is described
The connection of motor control module (3) signal for receiving the operation information and the setting value 1 and setting value 2, and is based on institute
It states setting value 1 and setting value 2 is analyzed and processed the operation information and exports control signal；
When the speed revolution value of acquisition is equal with setting value 1, output keeps the first instruction of motor normal power supply and rotation to institute
State motor control module；
When the speed revolution value of acquisition is less than setting value 1, output reduces the supply voltage of motor and the second of electric current instructs to institute
State motor control module；
After delay predetermined time, timer expiration signal is exported, controls the revolving speed number that the information detecting module obtains current motor
Value, and compared with setting value 2,
When the speed revolution value of acquisition is equal with the speed revolution value set, output initialization restores the third of motor normal power supply
It instructs to the motor control module；
When the speed revolution value of acquisition is less than the speed revolution value set, the 4th instruction of the power supply of outputting cutting power machine is extremely
The motor control module.
6. a kind of control system of rotor revolving speed according to claim 5, it is characterised in that: the infomation detection mould
Block (1) is configured to magnetoelectric tachometric transducer, and is installed on the shell of motor.
7. a kind of control system of rotor revolving speed according to claim 5, it is characterised in that: the memory module
(2) it is configured to RAM storage chip.
8. a kind of control system of rotor revolving speed according to claim 5, it is characterised in that: at the data analysis
Managing module (4) includes:
Comparator module one (41) is configured to receive the operation information and the setting value 1 and compare, works as operation information
When less than setting value 1, the first abnormal signal is exported, when operation information is equal to setting value 1, exports the first normal signal；
Comparator module two (42) is configured to receive the operation information and the setting value 2 and compare, works as operation information
When less than setting value 2, the second normal signal is exported, when operation information is equal to setting value 1, exports the second abnormal signal；
Time delay module (43) is connect with the comparator module one (41) and the equal signal of the comparator module two, is received and is rung
First abnormal signal described in Ying Yu starts timing, after reaching scheduled duration, exports timer expiration signal, comparator module two (42)
Receive and respond to the timer expiration signal；
It controls output module (44), with the comparator module one (41), comparator module two (42) and time delay module (43)
Control connection,
When receiving first normal signal, first instruction is exported to the motor control module (3)；When receiving
When first abnormal signal, the second instruction of output to the motor control module (3)；The time delay module (43) is synchronous simultaneously
It receives the first abnormal signal and starts timing, after timing, time delay module (43) exports timer expiration signal；When receiving
When two normal signals, the third that output initialization restores motor normal power supply is instructed to the motor control module (3)；Work as reception
When to the second abnormal signal, the 4th instruction of the power supply of outputting cutting power machine to the motor control module (3).
9. a kind of control system of rotor revolving speed according to claim 8, it is characterised in that: the motor control mould
Block (3) includes relay module one (31), relay module two (32) and electrical machinery of ventilator module (33), the relay module
One (31) are in response to the second abnormal signal, and the relay module two (32) is in response to the first abnormal signal and the second normal letter
Number.
10. a kind of control system of rotor revolving speed according to claim 5, it is characterised in that: the control system
It is also configured with alarm module (5), the alarm module (5) and the comparator module one (41) and the comparator module two
(42) the equal signal connection of comparison output end, the alarm module (5) instruct simultaneously in response to second instruction and the described 4th
Export prompt messages.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910229155.5A CN109830939A (en) | 2019-03-25 | 2019-03-25 | A kind of control method and system of rotor revolving speed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910229155.5A CN109830939A (en) | 2019-03-25 | 2019-03-25 | A kind of control method and system of rotor revolving speed |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201918953U (en) * | 2010-11-17 | 2011-08-03 | 重庆市海德自动化有限公司 | Multifunctional speed controller |
| CN106374434A (en) * | 2016-10-21 | 2017-02-01 | 广州视源电子科技股份有限公司 | Rotation-clogging protection method and device of motor |
| CN106936365A (en) * | 2015-12-31 | 2017-07-07 | 南京德朔实业有限公司 | The control method of motor in snowplough |
-
2019
- 2019-03-25 CN CN201910229155.5A patent/CN109830939A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201918953U (en) * | 2010-11-17 | 2011-08-03 | 重庆市海德自动化有限公司 | Multifunctional speed controller |
| CN106936365A (en) * | 2015-12-31 | 2017-07-07 | 南京德朔实业有限公司 | The control method of motor in snowplough |
| CN106374434A (en) * | 2016-10-21 | 2017-02-01 | 广州视源电子科技股份有限公司 | Rotation-clogging protection method and device of motor |
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Application publication date: 20190531 |