CN109687770A - The band-type brake coil control circuit and system of servo-driver - Google Patents
The band-type brake coil control circuit and system of servo-driver Download PDFInfo
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- CN109687770A CN109687770A CN201811638766.7A CN201811638766A CN109687770A CN 109687770 A CN109687770 A CN 109687770A CN 201811638766 A CN201811638766 A CN 201811638766A CN 109687770 A CN109687770 A CN 109687770A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P3/00—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters
- H02P3/06—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter
- H02P3/08—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter for stopping or slowing a dc motor
- H02P3/10—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter for stopping or slowing a dc motor by reversal of supply connections
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Abstract
The present embodiments relate to technical field of electromechanical control, disclose the band-type brake coil control circuit and system of a kind of servo-driver.In the present invention, a kind of band-type brake coil control circuit of servo-driver, comprising: current adjustment unit and comparing unit；Current adjustment unit is connect with one end of band-type brake coil, for controlling the conducting and disconnection of band-type brake coil and power supply；Comparing unit is connect with the other end of band-type brake coil, for obtaining the voltage for characterizing band-type brake coil current size；And control signal is obtained according to the variation of voltage, and send control signals to current adjustment unit, for current adjustment unit according to the conducting and disconnection of control signal adjustment band-type brake coil and power supply.The embodiment of the invention also provides a kind of servo band-type brake coil control systems；So that compared with prior art, can reduce the output power of power supply, power consumption is smaller, and can extend the service life of band-type brake coil.
Description
Technical field
The present embodiments relate to technical field of electromechanical control, in particular to the band-type brake coil of a kind of servo-driver controls
Circuit and system.
Background technique
Electromagnetic brake device is widely used in the various transmission devices for needing power down holding position, and electromagnetic brake is mainly by embracing
Brake cable circle, spring, armature are constituted.When band-type brake coil is powered, generation magnetic field, armature, which is attracted, unclamps armature and brake disc；When
Band-type brake coil blackout, magnetic field disappear, and armature pushes brake disc to by spring effect, generate friction torque and brake.
However, it is found by the inventors that at least there are the following problems in the prior art: the control mode of electromagnetic brake uses at present
The winding of voltage mode control, electromagnetic brake is usually made by copper, and as temperature increases, resistance increases, and leads to remain identical
Galvanization, needs to increase the output power of power supply, and power consumption is larger；In normal temperature state, extra voltage is applied to winding, extra
Energy will lead to winding temperature and increase rapidly, and then resistance is caused to increase, to reduce winding current, leads to a large amount of electric energy
It is wasted, serious fever causes band-type brake coil life to reduce, even fail.
Summary of the invention
The band-type brake coil control circuit and system for being designed to provide a kind of servo-driver of embodiment of the present invention, make
It can must reduce the output power of power supply compared with prior art, power consumption is smaller, and can extend the use longevity of band-type brake coil
Life.
In order to solve the above technical problems, embodiments of the present invention provide a kind of band-type brake coil control of servo-driver
Circuit, comprising: current adjustment unit and comparing unit；Current adjustment unit is connect with one end of band-type brake coil, is embraced for controlling
The conducting and disconnection of brake cable circle and power supply；Comparing unit is connect with the other end of band-type brake coil, for obtaining for characterizing band-type brake
The voltage of coil current size；And control signal is obtained according to the variation of voltage, and it is single to send control signals to electric current adjustment
Member, for current adjustment unit according to the conducting and disconnection of control signal adjustment band-type brake coil and power supply.
Embodiments of the present invention additionally provide a kind of servo band-type brake coil control system, comprising: band-type brake coil, Yi Jiru
The band-type brake coil control circuit of above-mentioned servo-driver.
Embodiment of the present invention in terms of existing technologies, provides a kind of band-type brake coil control electricity of servo-driver
Road, comprising: current adjustment unit and comparing unit；Current adjustment unit is connect with one end of band-type brake coil, for controlling band-type brake
The conducting and disconnection of coil and power supply；Comparing unit is connect with the other end of band-type brake coil, for obtaining for characterizing band-type brake line
The voltage of loop current size；And control signal is obtained according to the variation of voltage, and send control signals to current adjustment unit,
For current adjustment unit according to the conducting and disconnection of control signal adjustment band-type brake coil and power supply.In present embodiment, due to energy
The enough voltage got in real time for characterizing band-type brake coil current size, therefore, available characterization band-type brake coil current size
Voltage variation be increase or reduce, thus band-type brake coil electric current increase to a certain extent when, issue control signal,
The disconnection for adjusting band-type brake coil and power supply, prevents the electric current of band-type brake coil from continuing growing；One is reduced in the electric current of band-type brake coil
When determining degree, control signal is issued, the conducting of band-type brake coil and power supply is adjusted, prevents the electric current of band-type brake coil from continuing to reduce, with
Guarantee that band-type brake coil is in band-type brake state.Compared with prior art, lesser output power of power supply is only needed, power consumption is smaller；
Due to can be excessive to avoid the electric current of band-type brake coil, can be embraced to avoid the superheating phenomenon of band-type brake coil so as to extend
The service life of brake cable circle.
In addition, the band-type brake coil control circuit of servo-driver, further includes: detection resistance, one end of detection resistance with embrace
The other end of brake cable circle connects, the other end ground connection of detection resistance；For characterizing the voltage of band-type brake coil current size, specifically
Are as follows: the voltage for being used to characterize band-type brake coil current size that detection resistance obtains after dividing to band-type brake coil.Due to band-type brake coil
It can generate heat as electric current increases, internal resistance increases, so the internal resistance of band-type brake coil is variation, and the resistance value of detection resistance is solid
It is fixed, therefore, in the present embodiment, by making the voltage change after being divided between detection resistance and band-type brake coil, Lai Fanying
The variation of band-type brake coil voltage, then this changing value is exported to comparing unit and is compared, to control current adjustment unit.
In present embodiment, a kind of specific implementation of voltage change for obtaining band-type brake coil is provided, in addition, in practical application
In, different detection resistances can be selected to be divided therewith according to different band-type brake coils, to meet the need of practical application
It asks.
In addition, the band-type brake coil control circuit of servo-driver, further includes: power input protective module；Power input is protected
One end of shield module connects to power supply, and the other end of power input protective module is connect with current adjustment unit；Power input is protected
Shield module is used to the polarized input of power supply being changed into nonpolarity input, and carries out overvoltage protection.In present embodiment, pass through
Power input protective module is accessed, can not only prevent positive and negative connect of power supply from instead resulting in circuit damage, but also over-voltage guarantor can be carried out
Shield, prevents input voltage fluctuation from late-class circuit being caused to damage.
In addition, coil discharge module, specifically: light emitting diode.Due to when current adjustment unit adjustment band-type brake coil with
When power supply disconnects, band-type brake coil can generate an inverse electromotive force, and the voltage that band-type brake coil generates can pass through coil discharge module
And it discharges.In present embodiment, by setting light emitting diode for coil discharge module, user's intuitively root can be made
The current working condition of band-type brake coil is obtained according to whether light emitting diode shines, in order to be in improper work in band-type brake coil
It being capable of timely learning when making state.
Detailed description of the invention
One or more embodiments are illustrated by the picture in corresponding attached drawing, these exemplary theorys
The bright restriction not constituted to embodiment, the element in attached drawing with same reference numbers label are expressed as similar element, remove
Non- to have special statement, composition does not limit the figure in attached drawing.
Fig. 1 is a kind of knot of the band-type brake coil control circuit for servo-driver that first embodiment provides according to the present invention
Structure connection schematic diagram；
Fig. 2 is a kind of electricity of the band-type brake coil control circuit for servo-driver that first embodiment provides according to the present invention
Lu Tu；
Fig. 3 is a kind of control of the band-type brake coil control circuit for servo-driver that first embodiment provides according to the present invention
Waveform diagram processed；
Fig. 4 is a kind of electricity of the band-type brake coil control circuit for servo-driver that second embodiment provides according to the present invention
Lu Tu；
Fig. 5 is a kind of circuit of the band-type brake coil control circuit for servo-driver that third embodiment supplies according to the present invention
Figure；
Fig. 6 is a kind of structure of the band-type brake coil control system for servo-driver that the 4th embodiment supplies according to the present invention
Connection schematic diagram.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with attached drawing to the present invention
Each embodiment be explained in detail.However, it will be understood by those skilled in the art that in each embodiment party of the present invention
In formula, in order to make the reader understand this application better, many technical details are proposed.But even if without these technical details
And various changes and modifications based on the following respective embodiments, the application technical solution claimed also may be implemented.
The first embodiment of the present invention is related to a kind of band-type brake coil control circuits 10 of servo-driver.As shown in Figure 1.
In this implementation, the band-type brake coil control circuit 10 of servo-driver, comprising: current adjustment unit 11 and comparing unit 12；Electric current
Adjustment unit 11 is connect with one end of band-type brake coil, for controlling the conducting and disconnection of band-type brake coil and power supply；Comparing unit 12
It is connect with the other end of band-type brake coil, for obtaining the voltage for characterizing band-type brake coil current size；And according to the change of voltage
Change obtains control signal, and sends control signals to current adjustment unit 11, for current adjustment unit 11 according to control signal
Adjust the conducting and disconnection of band-type brake coil and power supply.
In present embodiment, since the voltage for characterizing band-type brake coil current size can be got in real time, can
It is to increase or reduce to obtain the variation of the voltage of characterization band-type brake coil current size, so that the electric current in band-type brake coil increases
When to a certain extent, control signal is issued, the disconnection of band-type brake coil and power supply is adjusted, prevents the electric current of band-type brake coil from continuing to increase
Add；When the electric current of band-type brake coil reduces to a certain extent, control signal is issued, the conducting of band-type brake coil and power supply is adjusted, is prevented
Only the electric current of band-type brake coil continues to reduce, to guarantee that band-type brake coil is in band-type brake state.Compared with prior art, it only needs lesser
Output power of power supply, power consumption are smaller；It, can be to avoid band-type brake coil due to can be excessive to avoid the electric current of band-type brake coil
Superheating phenomenon, so as to extend the service life of band-type brake coil.
Referring to fig. 2, wherein Fig. 2 is a kind of specific band-type brake coil control circuit figure provided according to the present embodiment.Under
Face combines Fig. 2 to carry out specifically the realization details of the band-type brake coil control circuit 10 of the servo-driver of present embodiment
Bright, the following contents only for convenience of the realization details provided is understood, not implements the necessary of this programme.
A kind of specific structure of band-type brake coil control circuit 10 in present embodiment is illustrated first.
As shown in Fig. 2, the band-type brake coil control circuit 10 in present embodiment may include: current adjustment unit 11, ratio
Compared with unit 12, benchmark Voltage stabilizing module 13, detection resistance 14, coil discharge module 15 and controlled element: band-type brake coil.
Specifically, the current adjustment unit 11 in present embodiment may include: capacitor charge and discharge module 111 and control
Make switch 112；One end of control switch 112 connects to power supply, and the other end of control switch 112 and one end of band-type brake coil connect
It connects；Capacitor charge and discharge module 111 is connected in parallel with control switch 112；Capacitor charge and discharge module 111 is used in control switch 112
When conducting, storing electricity is its capacitor charging, and when control switch 112 disconnects, to band-type brake coil discharge.Wherein, this implementation
Control switch 112 in mode can be low on-resistance, the PMOS switch of pressure resistance, for example can be pulse width modulation (PWM)
Control switch, but in practical applications should not be as limit.
Specifically, comparing unit 12 may include first comparator 121, voltage switching module 122 and the second comparator
123；First comparator 121 and the second comparator 123 are connect with the other end of band-type brake coil respectively；First comparator 121 and electricity
Press switching module 122 to connect, for obtaining the voltage for characterizing band-type brake coil current size, and by voltage and reference voltage into
Row compares, output comparison result to voltage switching module 122；Voltage switching module 122 is connect with the second comparator 123, is used for
According to comparison result, switching is input to the voltage signal of second comparator 123；Second comparator 123 and electric current adjustment are single
Member 11 connects, for obtaining the voltage for characterizing band-type brake coil current size, and the voltage that voltage switching module 122 is inputted
It is compared with the voltage for characterizing band-type brake coil current size, obtains control signal, and send control signals to electric current
Adjustment unit 11.In present embodiment, the second comparator 123 is specifically connect with the control switch 112 in current adjustment unit 11.
As preferred embodiment, the second comparator 123 therein can be hysteresis comparator.
It is noted that the reference voltage in present embodiment is provided by benchmark Voltage stabilizing module 13, benchmark Voltage stabilizing module
13 voltages provided generally can be set to the voltage of+2.5V, as shown in figure 3, the voltage source of benchmark Voltage stabilizing module 13 is in electricity
Source, however, in practical applications should not be as limit.
It specifically, further include detection resistance 14 in present embodiment.Wherein, one end of detection resistance 14 and band-type brake coil
The other end connection, detection resistance 14 the other end ground connection；For characterizing the voltage of band-type brake coil current size, specifically: inspection
The voltage for being used to characterize band-type brake coil current size that measuring resistance 14 obtains after dividing to band-type brake coil.Wherein, for detection electricity
The selection of the resistance value of resistance 14, when can be specifically braked according to motor, to be able to maintain the attracting state of band-type brake coil
Minimum current selects suitable detection resistance 14.
Since band-type brake coil can generate heat as electric current increases, internal resistance increases, so the internal resistance of band-type brake coil is variation,
And the resistance value of detection resistance 14 is fixed, and therefore, in the present embodiment, is divided between detection resistance 14 and band-type brake coil by making
Voltage change after pressure reacts on the variation of band-type brake coil voltage, then this changing value is exported to comparing unit 12 and is compared
Compared with to control current adjustment unit 11.In present embodiment, a kind of the specific of the voltage change for obtaining band-type brake coil is provided
Implementation, in addition, in practical applications, can be divided according to different band-type brake coils using different detection resistances 14
Pressure, is conducive to the flexible and changeable realization of present embodiment.
Preferably, the band-type brake coil control circuit 10 in present embodiment, further includes: coil discharge module 15, coil is put
One end of electric module 15 is connect with band-type brake coil, the other end ground connection of coil discharge module 15；For discharging the electricity of band-type brake coil
Pressure.Since when current adjustment unit 11 adjusts band-type brake coil and power supply disconnects, band-type brake coil can generate an inverse electromotive force, because
This, the voltage that band-type brake coil generates can be discharged by coil discharge module 15.
Fig. 3 is the waveform diagram of one of present embodiment band-type brake coil control circuit 10.As shown in figure 3, top in figure
Waveform be voltage control waveform；The waveform of lower section is current control waveform.In the T0 stage, power supply is not powered, or control is opened
It closes 112 to disconnect, power supply is the charging of capacitor charge and discharge module 111, and the voltage of band-type brake coil is zero；In the T1 stage, control switch 112
Conducting, power supply are band-type brake coil power supply, and the electric current of band-type brake coil gradually rises, and current peak I_peak are reached, with band-type brake line
The temperature of the raising of the electric current of circle, band-type brake coil also increases, and resistance increases, thus in the final stage in T1 stage, band-type brake
The current reduction of coil；In the T2 stage, control switch 112 is disconnected, and comparing unit 12 is obtained in real time for characterizing band-type brake coil electricity
The voltage for flowing size, when the electric current of band-type brake coil will fall down but not fall down, control switch 112 is connected, electricity
Source is band-type brake coil power supply again；So circulation, the electric current of band-type brake coil remain at I_hold, realize low current control, with
Maintain the attracting state of band-type brake coil.
It is illustrated below in conjunction with workflow of the Fig. 2 and Fig. 3 to band-type brake coil control circuit 10 in present embodiment.
When initial power-on, the current peak of band-type brake coil can be relatively high, and band-type brake coil is persistently pressurized, and can generate heat
Amount, so as to cause the reduction of band-type brake Coil resistance, correspondingly, the voltage of band-type brake coil output can change.In present embodiment,
The voltage output of band-type brake coil output is to first comparator 121 and the second comparator 123.Wherein, first comparator 121 and second
The voltage for the band-type brake coil output that comparator 123 receives, is obtained after being divided based on detection resistance 14 to band-type brake coil.
The voltage and benchmark Voltage stabilizing module 13 for being used to characterize band-type brake coil current size that first comparator 121 will acquire
The reference voltage of offer is compared, and a driving switch signal is generated, when the voltage for characterizing band-type brake coil current size
When greater than reference voltage, high level is exported, otherwise, exports low level.
First comparator 121 in present embodiment controls voltage by output low level or the level signal of high level
Switching module 122, consequently facilitating voltage switching module 122 is input to the voltage of the second comparator 123 according to level signal switching,
Play the role of determining the brake voltage size of band-type brake coil.
Voltage switching module 122 is according to the driving switch signal, voltage swing of the control output to the second comparator 123.
Wherein, voltage switching module 122 may include N-MOS switch, divider resistance and capacitor.Specifically, voltage switching module 122
It can be especially by control N-MOS switching different divider resistance or capacitor (namely switching different circuits) to change
Become the voltage for being input to the second comparator 123.Wherein, the voltage for being input to the second comparator 123, which is respectively as follows:, indicates band-type brake coil
It is maintained at the voltage in T1 stage and T2 stage, the input voltage of the voltage in the two stages as one end of the second comparator 123,
Alternately switch.Can intuitively it be understood by Fig. 3, if the voltage for being input to the second comparator 123 is the voltage in T1 stage, table
Show that band-type brake coil is kept open；If the voltage for being input to the second comparator 123 is the voltage in T2 stage, then it represents that band-type brake line
Circle keeps on-position.That is, band-type brake coil is kept for the time of high (impact) voltage long when the T1 stage is initial power-on
Degree is used to open band-type brake coil, and the T2 stage is after switching N-MOS switching to another circuit, and keeping band-type brake coil is braking
The time span of state.
Wherein, in band-type brake coil initial power-on, the time span and first comparator 121 in T1 stage are not related, are
The divider resistance that the reference voltage exported by benchmark Voltage stabilizing module 13 includes by voltage switching module 122 be capacitor charging when
Between constant determine.Such as the time span that user needs to control the T1 stage is 3 seconds, then, user can lead in practical applications
The mode of the capacitance of the resistance value or capacitor of resistance in change voltage switching module 122 is crossed to obtain the duration.
After band-type brake coil initial power-on, voltage and benchmark that first comparator 121 is fed back according to detection resistance 14 first
The reference voltage that Voltage stabilizing module 13 provides is compared, if the voltage that detection resistance 14 is fed back is greater than reference voltage, the first ratio
High level is exported compared with device 121, voltage supplied switching module 122 drives N-MOS switch, partial pressure is had switched after N-MOS switch conduction
Resistance, to change the input voltage of one end of the second comparator 123.In this case, the second comparator 123 is by the T2 stage
Voltage be compared with the voltage that detection resistance 14 is fed back, when comparison result reaches the threshold value of the second comparator 123, second
The driving switch signal that comparator 123 exports, drive control switch 112.
That is, the second comparator 123 embraces the voltage that voltage switching module 122 inputs and the characterization that is used for got
The voltage of brake cable loop current size is compared, then is generated a driving switch signal and exported to control switch 112, when the second ratio
When driving switch signal compared with the output of device 123 is high level, control switch 112 is connected；The driving of second comparator 123 output is opened
When OFF signal is low level, control switch 112 is disconnected, and capacitor charge and discharge module 111 gives band-type brake coil discharge, and band-type brake coil passes through
Coil discharge module 15 is discharged.
So circulation does not stop to carry out back and forth controlling the size for flowing through the electric current of band-type brake coil always, to realize low current
Control, to maintain the attracting state of band-type brake coil.It is all finally the voltage that different duty ratios is generated with control switch 112
The attracting state of band-type brake coil is maintained, band-type brake coil is opened with normal starting current to reach, is kept with small electric current
The firmly purpose of band-type brake state.
It is not difficult to find that a kind of band-type brake coil control circuit 10 for servo-driver that present embodiment provides, due to can
The voltage for characterizing band-type brake coil current size is got in real time, therefore, available characterization band-type brake coil current size
The variation of voltage be increase or reduce, thus band-type brake coil electric current increase to a certain extent when, issue control signal, adjust
The disconnection of whole band-type brake coil and power supply, prevents the electric current of band-type brake coil from continuing growing；It is reduced to centainly in the electric current of band-type brake coil
When degree, control signal is issued, the conducting of band-type brake coil and power supply is adjusted, prevents the electric current of band-type brake coil from continuing to reduce, to protect
Card band-type brake coil is in band-type brake state.Compared with prior art, lesser output power of power supply is only needed, power consumption is smaller；By
In can be excessive to avoid the electric current of band-type brake coil, therefore can be to avoid the superheating phenomenon of band-type brake coil, so as to extend band-type brake
The service life of coil.
Second embodiment of the present invention is related to a kind of band-type brake coil control circuit 10 of servo-driver.Second embodiment party
Formula is further improved on the basis of first embodiment, is specifically theed improvement is that: in the present embodiment, servo
The band-type brake coil control circuit 10 of driver, further includes: power input protective module 21.
The circuit diagram of the band-type brake coil control circuit 10 of servo-driver in present embodiment is as shown in Figure 4.
Specifically, one end of power input protective module 21 connects to power supply, power input protective module 21 it is another
End is connect with current adjustment unit 11；Power input protective module 21 is used to for the polarized input of power supply being changed into nonpolarity defeated
Enter, and carries out overvoltage protection.
Wherein, the power input protective module 21 in present embodiment, can be with are as follows: rectifier bridge, but in practical applications not
Make specific limit.
It is not difficult to find that a kind of band-type brake coil control circuit 10 for servo-driver that present embodiment provides, passes through access
Power input protective module 21 can not only prevent positive and negative connect of power supply from instead resulting in circuit damage, but also can carry out overvoltage protection,
Prevent input voltage fluctuation from late-class circuit being caused to damage.
Third embodiment of the present invention is related to a kind of band-type brake coil control circuit 10 of servo-driver.Third embodiment party
Formula is further improved on the basis of first embodiment, is specifically theed improvement is that: in the present embodiment, coil
Discharge module 15, specifically: light emitting diode.
The circuit diagram of the band-type brake coil control circuit 10 of servo-driver in present embodiment is as shown in Figure 5.
Since when current adjustment unit 11 adjusts band-type brake coil and power supply disconnects, it is reversed electronic that band-type brake coil can generate one
Gesture, the voltage that band-type brake coil generates can be discharged by coil discharge module.In present embodiment, by by coil discharge
Module 15 is set as light emitting diode, can make user intuitively obtains band-type brake coil according to whether light emitting diode shines
Current working condition, in order to being capable of timely learning when band-type brake coil is in abnormal operating state.
It should be noted that present embodiment is also possible to the improvement made on the basis of second embodiment.
It is not difficult to find that a kind of band-type brake coil control circuit 10 for servo-driver that present embodiment provides, by by line
Discharge module is enclosed, light emitting diode is set as, user can be made intuitively to be embraced according to whether light emitting diode shines
The current working condition of brake cable circle, in order to being capable of timely learning when band-type brake coil is in abnormal operating state.
Four embodiment of the invention is related to a kind of servo band-type brake coil control system, as shown in Figure 6.It include: band-type brake line
The band-type brake coil control circuit 10 of circle 20 and the first embodiment servo-driver any into third embodiment.
It should be noted that the servo band-type brake coil control system in present embodiment, is mainly used in the small-sized function of control
Band-type brake coil control circuit 10 in the servo-driver of rate, the control system can be used as an independent product and used.
It will be understood by those skilled in the art that the respective embodiments described above are to realize specific embodiments of the present invention,
And in practical applications, can to it, various changes can be made in the form and details, without departing from the spirit and scope of the present invention.
Claims (10)
1. a kind of band-type brake coil control circuit of servo-driver characterized by comprising current adjustment unit and relatively list
Member；
The current adjustment unit is connect with one end of the band-type brake coil, for controlling the conducting of the band-type brake coil and power supply
With disconnection；
The comparing unit is connect with the other end of the band-type brake coil, big for characterizing the band-type brake coil current for obtaining
Small voltage；And control signal is obtained according to the variation of the voltage, and the control signal is sent to the electric current and is adjusted
Unit adjusts the conducting and disconnection of the band-type brake coil and power supply for the current adjustment unit according to the control signal.
2. the band-type brake coil control circuit of servo-driver according to claim 1, which is characterized in that the electric current adjustment
Unit specifically includes: capacitor charge and discharge module and control switch；
One end of the control switch is connect with the power supply, one end of the other end of the control switch and the band-type brake coil
Connection；The capacitor charge and discharge module is connected in parallel with the control switch；
The capacitor charge and discharge module is used in control switch conducting, storing electricity, and is disconnected in the control switch
When, to the band-type brake coil discharge.
3. the band-type brake coil control circuit of servo-driver according to claim 1, which is characterized in that described relatively more single
Member specifically includes first comparator, voltage switching module and the second comparator；
The first comparator and second comparator are connect with the other end of the band-type brake coil respectively,；
The first comparator is connected with the voltage switching module, described for characterizing the band-type brake coil current for obtaining
The voltage of size, and the voltage and reference voltage are compared, output comparison result to the voltage switching module；
The voltage switching module is connect with second comparator, for according to the comparison result, switching to be input to described
The voltage of second comparator；
Second comparator is connect with the current adjustment unit, described for characterizing the band-type brake coil current for obtaining
The voltage of size, and by the voltage of voltage switching module input and described to be used to characterize the band-type brake coil current big
Small voltage is compared, and obtains the control signal, and the control signal is sent to the current adjustment unit.
4. the band-type brake coil control circuit of servo-driver according to claim 3, which is characterized in that described second compares
Device, specifically: hysteresis comparator.
5. the band-type brake coil control circuit of servo-driver according to claim 1, which is characterized in that further include: detection
Resistance, one end of the detection resistance are connect with the other end of the band-type brake coil, the other end ground connection of the detection resistance；
The voltage for being used to characterize the band-type brake coil current size, specifically: the detection resistance is to the band-type brake coil
What is obtained after partial pressure is used to characterize the voltage of the band-type brake coil current size.
6. the band-type brake coil control circuit of servo-driver according to claim 1, which is characterized in that further include: power supply
Input protective module；
One end of the power input protective module connects to power supply, the other end and the electricity of the power input protective module
Flow adjustment unit connection；The power input protective module is used to for the polarized input of the power supply being changed into nonpolarity defeated
Enter, and carries out overvoltage protection.
7. the band-type brake coil control circuit of servo-driver according to claim 6, which is characterized in that the power input
Protective module, specifically: rectifier bridge.
8. the band-type brake coil control circuit of servo-driver according to claim 1, which is characterized in that further include: coil
Discharge module, one end of the coil discharge module are connect with the band-type brake coil, another termination of the coil discharge module
Ground；For discharging the voltage of the band-type brake coil.
9. the band-type brake coil control circuit of servo-driver according to claim 8, which is characterized in that the coil discharge
Module, specifically: light emitting diode.
10. a kind of servo band-type brake coil control system characterized by comprising band-type brake coil, and as in claim 1 to 9
The band-type brake coil control circuit of described in any item servo-drivers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811638766.7A CN109687770A (en) | 2018-12-29 | 2018-12-29 | The band-type brake coil control circuit and system of servo-driver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811638766.7A CN109687770A (en) | 2018-12-29 | 2018-12-29 | The band-type brake coil control circuit and system of servo-driver |
Publications (1)
| Publication Number | Publication Date |
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| CN109687770A true CN109687770A (en) | 2019-04-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811638766.7A Pending CN109687770A (en) | 2018-12-29 | 2018-12-29 | The band-type brake coil control circuit and system of servo-driver |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111769752A (en) * | 2020-08-04 | 2020-10-13 | 长春汇通光电技术有限公司 | Band-type brake control circuit and elevator control system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200961088Y (en) * | 2006-10-11 | 2007-10-17 | 西子奥的斯电梯有限公司 | Time delay band brake control system for electromagnetic brake |
| CN101186037A (en) * | 2006-11-21 | 2008-05-28 | 发那科株式会社 | Motor driving apparatus for driving and braking brake-equipped motor |
| WO2010099787A3 (en) * | 2009-03-03 | 2012-04-19 | Robert Bosch Gmbh | Electrodynamic braking device for a universal motor |
| CN104743466A (en) * | 2013-12-31 | 2015-07-01 | 刘培 | Elevator band-type brake power supply |
-
2018
- 2018-12-29 CN CN201811638766.7A patent/CN109687770A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200961088Y (en) * | 2006-10-11 | 2007-10-17 | 西子奥的斯电梯有限公司 | Time delay band brake control system for electromagnetic brake |
| CN101186037A (en) * | 2006-11-21 | 2008-05-28 | 发那科株式会社 | Motor driving apparatus for driving and braking brake-equipped motor |
| WO2010099787A3 (en) * | 2009-03-03 | 2012-04-19 | Robert Bosch Gmbh | Electrodynamic braking device for a universal motor |
| CN104743466A (en) * | 2013-12-31 | 2015-07-01 | 刘培 | Elevator band-type brake power supply |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111769752A (en) * | 2020-08-04 | 2020-10-13 | 长春汇通光电技术有限公司 | Band-type brake control circuit and elevator control system |
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Application publication date: 20190426 |