CN109617492A - A kind of polishing machine and its guard method - Google Patents
A kind of polishing machine and its guard method Download PDFInfo
- Publication number
- CN109617492A CN109617492A CN201811340824.8A CN201811340824A CN109617492A CN 109617492 A CN109617492 A CN 109617492A CN 201811340824 A CN201811340824 A CN 201811340824A CN 109617492 A CN109617492 A CN 109617492A
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- CN
- China
- Prior art keywords
- transistor
- control
- power supply
- circuit
- polishing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
- H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
- H02P27/06—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters
-
- 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
- H02H7/0822—Integrated protection, motor control centres
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
A kind of polishing machine and its guard method；Wherein, the polishing machine include: include: be mutually coupled power supply output commutating circuit, control circuit and polishing motor, wherein, the control circuit specifically includes: sequentially connected anode end, the first voltage-stablizer, the second voltage-stablizer, control module and battery cathode end, and the drive module connecting with the control module；Wherein, the drive module is connect with power supply output commutating circuit, the control for realizing the control circuit to power supply output commutating circuit；The power supply output commutating circuit is connect with the polishing motor.The power supply output commutating circuit includes the bridge-type sub-circuit being made of 6 transistors, and the present invention is exported the control of commutating circuit jackshaft formula circuit to the power supply by the control circuit, multi gear stepless time adjustment may be implemented.In addition, the invention also discloses corresponding guard method a variety of protections can be carried out to polishing machine.
Description
Technical field
The present invention relates to polishing machine field, and in particular to a kind of polishing machine and its guard method.
Background technique
Polishing machine is also referred to as grinder, is widely used in all trades and professions.Polishing machine in actual use, it is past
Toward because producing the difference of the specification requirement of product, size and material, polishing machine is needed to export suitable revolving speed.Therefore, it throws
Safety in the adjustability of ray machine velocity interval, operation stability and its use process is always the concern of its user
Point.
Summary of the invention
In view of the above-mentioned problems, according to an aspect of the present invention, disclosing a kind of polishing machine, comprising: the electricity being mutually coupled
Source exports commutating circuit, control circuit and polishing motor, wherein the control circuit specifically includes: sequentially connected electricity
Pond positive terminal, the first voltage-stablizer, the second voltage-stablizer, control module and battery cathode end, and connect with the control module
Drive module；Wherein, the drive module is connect with power supply output commutating circuit, for realizing the control circuit to institute
State the control of power supply output commutating circuit；The power supply output commutating circuit is connect with the polishing motor, thus realization pair
Polish the control of motor.
Preferably, the drive module is also coupled between the output end of the first voltage-stablizer and battery cathode end, Huo Zhe
Between the input terminal and battery cathode end of two voltage-stablizers.
Preferably, the control circuit further include: speed-regulating switch, the speed-regulating switch are connect with the control module, are used
In the revolving speed of control polishing motor.
Preferably, the control circuit further include: driving switch, the driving switch are connect with the control module, are used
In the gear of control polishing motor.
Preferably, the power supply output commutating circuit includes: bridge-type sub-circuit and measurement resistance, wherein bridge-type
Circuit is made of 6 transistors.
It is furthermore preferred that the bridge-type sub-circuit is divided into Shang Qiao and lower bridge, wherein in upper bridge, the first transistor, the second crystalline substance
The drain electrode of body pipe and third transistor and the positive terminal of battery connect；In lower bridge, the 4th transistor, the 5th transistor and
The source terminal of six transistors and the negative pole end of battery connect；The upper bridge passes through the first transistor, second transistor and respectively
The source terminal of three transistors is connected with the drain electrode end of corresponding 4th transistor, the 5th transistor and the 6th transistor, thus with
Lower bridging connects.
It is furthermore preferred that the first transistor, second transistor, third transistor, the 4th transistor, the 5th transistor with
And the 6th the gate terminal of transistor be connected respectively to the correspondence control terminal of drive module.
It is furthermore preferred that having 3 tie points between the upper bridge and the lower bridge, wherein every in 3 tie points
A 2 Different electrodes being connected respectively in polishing motor, to realize that power supply output commutating circuit is electronic to the polishing
The control of machine.
It is furthermore preferred that the measurement resistance is coupled between the lower bridge and battery cathode end.
According to another aspect of the present invention, the invention also discloses a kind of polishing machine guard methods, comprising: passes through control
Module monitors battery voltage, when battery voltage is less than or equal to setting value in polishing machine use process, control power supply output
Commutating circuit shutdown, so that polishing motor stops；By control module monitoring electric current, when the operating current is big
In be equal to setting value when, and the retention time be more than or equal to setting delay time when, control power supply output commutating circuit shutdown, in turn
So that polishing motor stops；Pass through control
Molding block monitor transistor temperature, when temperature be more than or equal to set temperature, and the retention time be more than or equal to setting prolong
When the time when, control power supply output commutating circuit shutdown so that polishing motor stop；Battery is monitored by control module
Group temperature, when temperature is more than or equal to set temperature, and the retention time is more than or equal to setting delay time, control power supply output is changed
It is turned off to circuit, so that polishing motor stops；The starting voltage that battery pack is monitored by control module, when the battery
When the starting voltage of group is less than setting voltage, control power supply output commutating circuit shutdown, so that polishing motor stops；It is logical
Control module control brake is crossed, when polishing motor brake, lower bridge constant conduction is controlled by control module, consumption motor turns
Dynamic energy, to brake to polishing electric motor.
The present invention has the advantages that the present invention exports commutating circuit jackshaft formula to the power supply by the control circuit
Multi gear stepless time adjustment may be implemented in the control of circuit；In addition, the invention also discloses a kind of polishing machine guard methods, comprising: low
Voltage protection, overcurrent protection, transistor overheat protector, electronics group high temperature protection, the protection of battery pack low voltage starting and brake
Protection etc..
Detailed description of the invention
By reading the following detailed description of the preferred embodiment, various other advantages and benefits are common for this field
Technical staff will become clear.The drawings are only for the purpose of illustrating a preferred embodiment, and is not considered as to the present invention
Limitation.And throughout the drawings, the same reference numbers will be used to refer to the same parts.In the accompanying drawings:
Attached drawing 1 shows the polishing machine control electronic schematic diagram of embodiment according to the present invention.
Specific embodiment
The illustrative embodiments of the disclosure are more fully described below with reference to accompanying drawings.Although showing this public affairs in attached drawing
The illustrative embodiments opened, it being understood, however, that may be realized in various forms the disclosure without the reality that should be illustrated here
The mode of applying is limited.It is to be able to thoroughly understand the disclosure on the contrary, providing these embodiments, and can be by this public affairs
The range opened is fully disclosed to those skilled in the art.
As shown in Figure 1, for according to the polishing machine electronic schematic diagram of embodiment of the present invention, comprising: anode end
1, battery cathode end 2, the first voltage-stablizer 3, the second voltage-stablizer 4, control module 5, drive module 6, speed switch 7, driving switch
8, bridge circuit 9, measurement resistance 10 and the polishing motor 11 being made of 6 transistors.Wherein, the polishing machine control electricity
Road includes: the power supply output commutating circuit being mutually coupled and control circuit, wherein the control circuit specifically includes: successively
The first voltage-stablizer 3, the second voltage-stablizer 4 and the control module 5 of connection, and the drive module 6 being connect with the control module 5；
Wherein, the input terminal of first voltage-stablizer 3 is connect with anode end 1, the power cathode end of the control module 5 and battery
Negative pole end 2 connects.
Specifically, output end/second voltage-stablizer 4 that the power end of the drive module 6 is coupled in the first voltage-stablizer 3 is defeated
Enter between end and battery cathode end 2, for realizing the control to power supply output commutating circuit, wherein the control includes:
Gear control and revolving speed control.The power supply output commutating circuit includes: the bridge circuit 9 being made of 6 transistors and measures
Resistance 10, wherein the transistor is MOSFET field-effect tube, as switch for controlling the electrode and electricity of polishing motor
The on or off of pond positive terminal or negative pole end.The control circuit exports commutating circuit by drive module and the power supply and connects
It connects, the drive module is for amplifying control signal.In addition, the control circuit further include: speed-regulating switch and driving switch,
In, the speed-regulating switch is connect with the control module, for controlling the revolving speed of polishing motor；The driving switch with it is described
Control module connection, for controlling the gear (revolving speed section) of polishing motor.
More specifically, the control module is MCU, the drive module is MOSFET driving, and the Voltage stabilizing module is low
Pressure difference linear voltage regulator LDO (low dropout regulator).6 MOSFET effects in the polishing machine control circuit
Should the gate terminal of pipe connect respectively with the MOSFET drive module, thus according to the output signal of the MOSFET drive module
Carry out on or off.6 MOSFET field-effect tube form bridge circuit, and upper bridge includes 3 MOSFET field-effect tube, drain electrode
End is connect with the positive terminal of the battery respectively；Lower bridge include other 3 MOSFET field-effect tube, source terminal respectively with it is described
The negative pole end of battery connects.The connection type of the upper bridge and the lower bridge is the source by the MOSFET MOS field effect transistor in excessively upper bridge
Extremely respectively with the connection of the drain electrode end of the MOSFET field-effect tube in corresponding lower bridge and be attached.In addition, the power supply
Output commutating circuit further includes measurement resistance 10, is coupled between lower bridge and battery cathode.
In above-mentioned bridge circuit, Shang Qiao is correspondingly connected with lower bridge by 3 transistors that it is respectively contained, from each pair of
Signal is drawn in common end between MOSFET field-effect tube, is connected (two with every two adjacent electrode in polishing motor respectively
The extremely different electrode of electricity), for controlling the polarity of 3 phase currents of the two output and its situation that is turned on or off, so that it is right
The revolving speed of the polishing motor is controlled.Wherein, the electrode of the polishing motor shares 3 pairs 6, is divided into U phase, V phase
It with W phase, and is symmetrically arranged, the on or off of upper bridge or lower bridge regularity is controlled by control circuit, so that the bridge
The electric current (i.e. alternating current) of the input polishing motor change in polarity of formula circuit output certain frequency, and then by being led described in control
Logical or shutdown frequency controls the frequency of the alternating current of its output, and then realizes the control to polishing machine electrode revolving speed.
Specific embodiment
Above-mentioned is polishing machine control circuit composition of the present invention, in order to guarantee the work of polishing machine stabilization, safety, the present invention
A kind of polishing machine guard method is also disclosed, is illustrated below with the case where specific embodiment, the polishing machine guard method
Include:
Under-voltage protection: for detecting battery voltage, when the operating voltage voltage of the battery pack is less than or equal to 12.5V
When, power supply is controlled by control module and exports commutating circuit shutdown, so that polishing motor stops.Overcurrent protection: it uses
In the operating current by polishing machine control circuit described in measurement resistance detection, when the operating current is more than or equal to setting value
When, and the 300mS that is delayed, power supply is controlled by control module and exports commutating circuit shutdown, so that polishing motor stops.
Transistor overheat protector, for detecting the temperature of transistor in power supply output commutating circuit, in practical applications, as switch
Transistor is generally arranged on heat-dissipating aluminium plate, and is radiated by heat-dissipating aluminium plate and its cooling fin；Transistor of the invention
Overheat protector, the temperature of the temperature sensor indirect monitoring transistor by being set to the heat-dissipating aluminium plate surface, works as cooling fin
Temperature reach 100 DEG C, and be delayed 1S when, by control module control power supply export commutating circuit shutdown so that throw
Photoelectricity motivation stops.Battery pack high temperature protection, for detecting internal battery pack temperature, wherein the battery pack high temperature protection is logical
The temperature for being set to the temperature sensor perception battery pack of the internal battery pack is crossed, it is described when the temperature in battery pack is higher
The resistance value of temperature sensor is bigger, and then the resistance value by detecting the temperature sensor, realizes the inspection to temperature in battery pack
Survey, when temperature exceed 80 DEG C of setting value, and be delayed 1S when, by control module control power supply export commutating circuit shutdown, into
And to polish motor stopping.The protection of battery pack low voltage starting, for detecting the starting voltage of battery pack, works as battery voltage
Lower than 15V, when starting by start button, when the current battery voltage that MCU is detected at this time is less than or equal to 15V, pass through control
Molding block controls power supply output commutating circuit shutdown, so that polishing motor stops.Brake protection, when polishing machine brakes
When, polishing motor from electric motor state becomes Generator Status, at this point, lower bridge constant conduction is controlled by MCU, to consume
The electric energy that polishing machine can be converted to by own mechanical, and then brake to polishing motor.
It is noted that setting value in the present invention in guard method is only for saying the present embodiment and the present invention
Bright, specific setting value can be set according to real protection.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
In the technical scope disclosed by the present invention, any changes or substitutions that can be easily thought of by anyone skilled in the art,
It should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be with the protection model of the claim
Subject to enclosing.
Claims (10)
1. a kind of polishing machine characterized by comprising power supply output commutating circuit, control circuit and the polishing being mutually coupled
Motor, wherein
The control circuit specifically includes: sequentially connected anode end, the first voltage-stablizer, the second voltage-stablizer, control module
With battery cathode end, and the drive module being connect with the control module；Wherein, the drive module and the power supply export
Commutating circuit connection, the control for realizing the control circuit to power supply output commutating circuit；The power supply output is changed
It is connect to circuit with the polishing motor, to realize the control to polishing motor.
2. polishing machine control circuit according to claim 1, which is characterized in that it is steady that the drive module is also coupled in first
Between the output end and battery cathode end of depressor or between the input terminal and battery cathode end of the second voltage-stablizer.
3. polishing machine control circuit according to claim 1, which is characterized in that the control circuit further include: speed regulation is opened
It closes, the speed-regulating switch is connect with the control module, for controlling the revolving speed of polishing motor.
4. polishing machine control circuit according to claim 1, which is characterized in that the control circuit further include: gear is opened
It closes, the driving switch is connect with the control module, for controlling the gear of polishing motor.
5. polishing machine control circuit according to claim 1, which is characterized in that the power supply exports commutating circuit and includes:
Bridge-type sub-circuit and measurement resistance, wherein
The bridge-type sub-circuit is made of 6 transistors.
6. polishing machine control circuit according to claim 5, which is characterized in that the bridge-type sub-circuit is divided into Shang Qiao under
Bridge, wherein
In upper bridge, the positive terminal of the first transistor, the drain electrode of second transistor and third transistor and battery is connected；In Xia Qiao
In, the negative pole end of the 4th transistor, the source terminal of the 5th transistor and the 6th transistor and battery connects；The upper bridge difference
By the source terminal of the first transistor, second transistor and third transistor and corresponding 4th transistor, the 5th transistor and
The drain electrode end of 6th transistor connects, to connect with lower bridging.
7. polishing machine control circuit according to claim 6, which is characterized in that the first transistor, second transistor,
Third transistor, the 4th transistor, the 5th transistor and the 6th transistor gate terminal be connected respectively to pair of drive module
Answer control terminal.
8. polishing machine control circuit according to claim 6, which is characterized in that have between the upper bridge and the lower bridge
3 tie points, wherein
Each of described 3 tie points are connected respectively to 2 Different electrodes in polishing motor, to realize that power supply exports
Control of the commutating circuit to the polishing motor.
9. polishing machine control circuit according to claim 5, which is characterized in that the measurement resistance is coupled in the lower bridge
Between battery cathode end.
10. a kind of polishing machine guard method characterized by comprising
Battery voltage is monitored by control module, when battery voltage is less than or equal to setting value in polishing machine use process,
Power supply output commutating circuit shutdown is controlled, so that polishing motor stops；
By control module monitoring electric current, when the operating current is more than or equal to setting value, and the retention time is greater than etc.
When setting delay time, control power supply output commutating circuit shutdown, so that polishing motor stops；
By control module monitor transistor temperature, when temperature is more than or equal to set temperature, and the retention time is more than or equal to setting
When delay time, control power supply output commutating circuit shutdown, so that polishing motor stops；
By control module monitor battery pack temperature, when temperature be more than or equal to set temperature, and the retention time be more than or equal to setting
When delay time, control power supply output commutating circuit shutdown, so that polishing motor stops；
The starting voltage that battery pack is monitored by control module, when the starting voltage of the battery pack is less than setting voltage, control
Power supply output commutating circuit shutdown processed, so that polishing motor stops；
It is controlled and is braked by control module, when polishing motor brake, lower bridge constant conduction, consumption are controlled by control module
The energy of motor rotation, to brake to polishing electric motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811340824.8A CN109617492A (en) | 2018-11-12 | 2018-11-12 | A kind of polishing machine and its guard method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811340824.8A CN109617492A (en) | 2018-11-12 | 2018-11-12 | A kind of polishing machine and its guard method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109617492A true CN109617492A (en) | 2019-04-12 |
Family
ID=66003050
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811340824.8A Pending CN109617492A (en) | 2018-11-12 | 2018-11-12 | A kind of polishing machine and its guard method |
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| Country | Link |
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| CN (1) | CN109617492A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101286721A (en) * | 2007-11-16 | 2008-10-15 | 西北工业大学 | Driving system of stepping motor with current negative feedback |
| CN101380876A (en) * | 2008-09-04 | 2009-03-11 | 清华大学 | Vehicle tyre-bursting security control method and system |
| CN103944468A (en) * | 2014-03-03 | 2014-07-23 | 江苏星光发电设备有限公司 | Excitation constant-current device for TFW brushless generator |
| CN104821751A (en) * | 2015-03-31 | 2015-08-05 | 浙江新富凌电气股份有限公司 | Frequency converter rapid start-stop machine control system |
-
2018
- 2018-11-12 CN CN201811340824.8A patent/CN109617492A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101286721A (en) * | 2007-11-16 | 2008-10-15 | 西北工业大学 | Driving system of stepping motor with current negative feedback |
| CN101380876A (en) * | 2008-09-04 | 2009-03-11 | 清华大学 | Vehicle tyre-bursting security control method and system |
| CN103944468A (en) * | 2014-03-03 | 2014-07-23 | 江苏星光发电设备有限公司 | Excitation constant-current device for TFW brushless generator |
| CN104821751A (en) * | 2015-03-31 | 2015-08-05 | 浙江新富凌电气股份有限公司 | Frequency converter rapid start-stop machine control system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 321025 Jinhua City, Wucheng Province, long street, South Street, No. 1158 Applicant after: Zhejiang Kaichuang Electrical Co., Ltd. Address before: 321025 Jinhua City, Wucheng Province, long street, South Street, No. 1158 Applicant before: Zhejiang Pioneer Electric Co., Ltd. |
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| CB02 | Change of applicant information | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190412 |
|
| RJ01 | Rejection of invention patent application after publication |