CN207368912U - Motor brake circuit and steering engine - Google Patents
Motor brake circuit and steering engine Download PDFInfo
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- CN207368912U CN207368912U CN201721380754.XU CN201721380754U CN207368912U CN 207368912 U CN207368912 U CN 207368912U CN 201721380754 U CN201721380754 U CN 201721380754U CN 207368912 U CN207368912 U CN 207368912U
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- brake
- electromotive force
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Abstract
The utility model belongs to electronic circuit technology field, provide a kind of motor brake circuit and steering engine, when power module is stopped power supply, reverse-filling module can prevent the counter electromotive force that motor produces from pouring in down a chimney to power supply, the magnitude of voltage for the counter electromotive force that motor produces reaches predetermined threshold value and connects brake module, cause motor braking to consume the counter electromotive force of motor generation, it is thus achieved that to the adjustable effect of skid resistance, its circuit structure is simple at the same time, small volume, and employ reverse-filling module and can reach the effect for preventing counter electromotive force from feeding back to busbar voltage, in addition, can be by adjusting the resistive parameter of brake module, so as to the retro-speed of regulation motor, therefore solving the problems, such as existing brake technique, there is because causing volume excessive using relay.
Description
Technical field
The utility model belongs to motor-drive technique field, more particularly to a kind of motor brake circuit and steering engine.
Background technology
Steering engine is the movement core devices of robot, and under powering-off state, the external world drives rotation or self gravitation to produce
Movement when, be required for steering engine that there is certain braking ability, but while extraneous pushing motor produces induced electromotive force
It can influence the performance of other circuit parts.Since steering engine structural volume is small, its board area seems especially nervous, traditional side
Formula is to be realized motor busbar voltage short circuit with devices such as relays after power-off so that the counter electromotive force that motor produces is in coil
Electric current is produced to reach the effect of brake, however, due to causing volume excessive using relay, is not suitable for being applied to empty to area
Between more demanding occasion.
Therefore, the problem of existing brake technique because using relay there is causing volume excessive.
Utility model content
The purpose of this utility model is to provide a kind of motor brake circuit and steering engine, it is intended to solves existing brake technique
The problem of there is causing volume excessive because using relay.
The utility model first aspect provides a kind of motor brake circuit, including the drive axle being connected with motor, institute
State motor brake circuit and further include brake control unit, the brake control unit is connected by the drive axle and the motor
Connect, the brake control unit includes：
It is connected with the positive output end of power module, for making the reverse-filling of the power module output current one-way conduction
Module；
It is connected with the output terminal of the reverse-filling module, for when the power module is stopped power supply, according to described
The trigger module of the magnitude of voltage on or off for the counter electromotive force that motor produces；And
It is connected with the output terminal of the trigger module and the negative output terminal of the power module, for consuming the electricity
The counter electromotive force that machine produces is so that the resistive brake module of the motor braking.
The utility model second aspect provides a kind of steering engine, including motor and the brake electricity that is connected with the motor
Road, the braking circuit include the drive axle being connected with the motor, and the braking circuit further includes brake control unit, institute
State brake control unit to be connected with the motor by the drive axle, the brake control unit includes：
It is connected with the positive output end of power module, for making the reverse-filling of the power module output current one-way conduction
Module；
It is connected with the output terminal of the reverse-filling module, for when the power module is stopped power supply, according to described
The trigger module of the magnitude of voltage on or off for the counter electromotive force that motor produces；And
It is connected with the output terminal of the trigger module and the negative output terminal of the power module, for consuming the electricity
The counter electromotive force that machine produces is so that the resistive brake module of the motor braking.
In conclusion a kind of above-mentioned motor brake circuit and steering engine, when power module is stopped power supply, reverse-filling module can
Predetermined threshold value connection is reached with the magnitude of voltage for preventing the counter electromotive force of motor generation from pouring in down a chimney the counter electromotive force produced to power supply, motor
Brake module, causes motor braking, it is thus achieved that to the adjustable effect of skid resistance to consume the counter electromotive force of motor generation
Fruit, while its circuit structure is simple, small volume, and employing reverse-filling module and can reach prevents counter electromotive force from feeding back to mother
The effect of line voltage, in addition, can be by adjusting the resistive parameter of brake module, so that the retro-speed of regulation motor, therefore solve
The problem of existing brake technique determined there is causing volume excessive because using relay.
Brief description of the drawings
Fig. 1 is a kind of modular structure schematic diagram of motor brake circuit provided by the utility model.
Fig. 2 is a kind of exemplary circuit figure of motor brake circuit provided by the utility model.
Embodiment
In order to which the technical problems to be solved in the utility model, technical solution and beneficial effect is more clearly understood, below
With reference to accompanying drawings and embodiments, the utility model is further elaborated.It should be appreciated that specific implementation described herein
Example only to explain the utility model, is not used to limit the utility model.
A kind of the motor brake circuit and steering engine of the utility model embodiment, when power module is stopped power supply, reverse-filling
Module can prevent the magnitude of voltage that the counter electromotive force that motor produces pours in down a chimney the counter electromotive force produced to power supply, motor from reaching default threshold
Value connects brake module, causes motor braking to consume the counter electromotive force of motor generation.
In order to illustrate technical solution described in the utility model, illustrated below by specific embodiment.
Fig. 1 shows a kind of modular structure of motor brake circuit provided by the utility model, for convenience of description, only shows
Gone out with the relevant part of the utility model embodiment, details are as follows：
A kind of above-mentioned motor brake circuit, it includes the drive axle 106 being connected with motor 107, and motor brake circuit is also
Including brake control unit 108, brake control unit 108 is connected by drive axle 106 with motor 107, the brake control unit
108 include reverse-filling module 102, trigger module 103 and brake module 105；
Reverse-filling module 102 is connected with the positive output end of power module 101, for making 101 output current of power module
One-way conduction；Trigger module 103 is connected with the output terminal of reverse-filling module 102, for stopping power supply when power module 101
When, the magnitude of voltage on or off of the counter electromotive force produced according to motor 107；The output of brake module 105 and trigger module 103
The negative output terminal of end and the power module 101 is connected, for consuming the counter electromotive force of the motor generation so that described
Motor braking.
As one embodiment of the utility model, above-mentioned motor brake circuit further includes energy-storage module 104, energy-storage module 104
It is connected with the positive input terminal and negative input end of drive axle 106, for being stored to electric energy.Its electric energy can be power supply mould
The counter electromotive force that the electric signal or motor 107 that block 101 exports produce.
As one embodiment of the utility model, one side face can be consumed the motor 107 by brake module 105 and be produced
Counter electromotive force so that motor braking；On the other hand can be by adjusting the resistive parameter of brake module 105, so as to adjust electricity
The retro-speed of machine 107.
Fig. 2 shows a kind of exemplary circuit of motor brake circuit provided by the utility model, for convenience of description, only shows
Gone out with the relevant part of the utility model embodiment, details are as follows：
As one embodiment of the utility model, above-mentioned power module 101 possesses the DC power supply of fixed voltage value
VCC, its range of voltage values are 6V-65V.
As one embodiment of the utility model, above-mentioned reverse-filling module 102 includes the first diode D1, the one or two pole
The anode of pipe D1 connects the positive output end of the power module 101, and the cathode of the first diode D1 is the reverse-filling module
102 output terminal.
As one embodiment of the utility model, above-mentioned trigger module 103 includes the first field-effect tube Q1, first effect
Should the source electrode of pipe Q1 connect the output terminal of the reverse-filling module 102, the grid of the first field-effect tube Q1 connects the power supply mould
The positive output end of block 101, the drain electrode of the first field-effect tube Q1 are the output terminal of the trigger module 103.Wherein, described
First end of the grid of one field-effect tube Q1 also with second resistance R2 is connected, the second termination power module of second resistance R2
101 negative output terminal.
As one embodiment of the utility model, above-mentioned brake module 105 includes first resistor R1, the first resistor R1's
The output terminal of the first termination trigger module 103, the negative output of the second termination power module 101 of the first resistor R1
End.
As one embodiment of the utility model, above-mentioned drive axle 106 is full bridge driving circuit, it is of course also possible to be half-bridge
Drive circuit.Include the second field-effect tube Q2, the 3rd field-effect tube Q3, the 4th field-effect tube Q4, the 5th during full bridge driving circuit
Field-effect tube Q5, the 6th field-effect tube Q6 and the 7th field-effect tube Q7, wherein, the drain electrode of the 3rd field-effect tube Q3 with the 5th
The drain electrode of effect pipe Q5 and the drain electrode of the 7th field-effect tube Q7 connect and are connected with the output terminal of reverse-filling module 102 altogether, the
The source electrode of three field-effect tube Q3 is held and is connect altogether with the drain electrode of the second field-effect tube Q2 and the A phases of motor 107, the 5th field-effect tube Q5
Source electrode hold and connect altogether with the drain electrode of the 4th field-effect tube Q4 and the B phases of motor 107, the source electrode and the 6th of the 7th field-effect tube Q7
The drain electrode of field-effect tube Q6 and the C phases of motor 107 are held and are connect altogether, the source electrode of the second field-effect tube Q2 and the 4th field-effect tube Q4's
The source electrode of source electrode and the 6th field-effect tube Q6 connect the negative output terminal of power module 101.
As one embodiment of the utility model, the grid of above-mentioned second field-effect tube Q2, the grid of the 3rd field-effect tube Q3,
Grid, the grid of the 5th field-effect tube Q5, the grid of the 6th field-effect tube Q6 and the 7th field-effect of 4th field-effect tube Q4
Multiple pins of the grid of pipe Q7 respectively with gate-drive chip (Fig. 2 is not shown) are connected.In the present embodiment, gate-drive
Chip employs the gate-drive chip of model TI-DRV8323H, and certainly, the model of gate-drive chip does not limit, as long as
It can reach and also may be used with the function described in the present embodiment gate-drive chip.
Therefore, the advantage of above-mentioned motor brake circuit is embodied in：
(1) the first diode D1 concatenated on busbar, when steering engine powers off (i.e. power module 101 is stopped power supply), electricity are passed through
The counter electromotive force that machine 107 produces can not feed back to busbar end after over commutation, play and isolated induced electromotive force and power module
101 effect；
(2) when busbar powers off, the grid of the first field-effect tube Q1 is to connect the negative defeated of power module 101 by first resistor R1
Outlet, when motor 101 produces induced electromotive force and when reaching predetermined threshold value, the first field-effect tube Q1 conductings, the concatenated with it
One resistance R1 connects the negative output terminal of power module 101 so that it is opposite that the electric current that machine winding produces can produce a direction of rotation
Rotating excitation field, and cause the inside of motor 107 to produce magnetic damping, so as to control motor braking；
(3) by setting the resistance value of first resistor R1, the size of 107 magnetic damping of motor is adjusted, so that regulation motor 107
Retro-speed；
(4) use only the mode of field-effect tube, diode and resistance so that circuit structure is relatively simple, volume compared with
It is small.
Another embodiment of the utility model provides a kind of steering engine, including motor, further includes above-mentioned motor brake circuit.
The steering engine can be designed to that very little is skilful, it is output and input all by the way of lead, so as to user's self-changeable；And motor brake
Circuit is connected up using PCB circuit board single side and placing element, highly integrated and reduce cost, realizes lighting.And above-mentioned electricity
Machine braking circuit is applicable not only to brushless electric machine, applies also for brush motor.
Below in conjunction with Fig. 1 and Fig. 2, the operation principle of a kind of above-mentioned motor brake circuit and steering engine is described as follows：
When DC power supply VCC powers, its electric signal is via the first diode D1 to the 3rd field-effect tube Q3, the 5th effect
Should pipe Q5 and the 7th field-effect tube Q7 power supplies, while also via the grid of the first field-effect tube Q1 so that the first field-effect tube
Q1 is in cut-off state, the power supply of integrated circuit bio-occlusion motor；
When DC power supply VCC disconnect power when, the grid of the first field-effect tube Q1 is grounded by second resistance R2, when motor by
When external force promotes, the inverse electromotive force of generation via the second field-effect tube Q2, the 3rd field-effect tube Q3, the 4th field-effect tube Q4,
The body diode rectification feedback of 5th field-effect tube Q5, the 6th field-effect tube Q6 and the 7th field-effect tube Q7 are to the first capacitance
C1, due to the single phase property of the first diode D1, the counter electromotive force of generation fails to feed back to DC power supply VCC, when counter electromotive force reaches
During to predetermined threshold value, the first field-effect tube Q1 conductings, discharge, motor produces resistance, the size of its resistance via first resistor R1
It is linear with the speed of motor pushing while also linear with the resistance value size of first resistor R1.
In conclusion the utility model embodiment provides a kind of motor brake circuit and steering engine, when power module stops
During power supply, reverse-filling module can prevent the counter electromotive force that motor produces from pouring in down a chimney the electricity of the counter electromotive force produced to power supply, motor
Pressure value reaches predetermined threshold value and connects brake module, causes motor braking to consume the counter electromotive force of motor generation, it is thus achieved that
To the adjustable effect of skid resistance, while its circuit structure is simple, small volume, and employs reverse-filling module and can reach
Prevent counter electromotive force from feeding back to the effect of busbar voltage, in addition, can be by adjusting the resistive parameter of brake module, so as to adjust electricity
The retro-speed of machine, therefore solve the problems, such as existing brake technique there is because causing volume excessive using relay.
The utility model embodiment is realized simple, it is not necessary to increases extra hardware, can effectively reduce cost, has stronger ease for use
And practicality.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
All any modification, equivalent and improvement made within the spirit and principle of utility model etc., should be included in the utility model
Protection domain within.
Claims (10)
1. a kind of motor brake circuit, including the drive axle being connected with motor, it is characterised in that the motor brake circuit is also
Including brake control unit, the brake control unit is connected by the drive axle with the motor, and the brake control is single
Member includes：
It is connected with the positive output end of power module, for making the reverse-filling mould of the power module output current one-way conduction
Block；
It is connected with the output terminal of the reverse-filling module, for when the power module is stopped power supply, according to the motor
The trigger module of the magnitude of voltage on or off of the counter electromotive force of generation；And
It is connected with the output terminal of the trigger module and the negative output terminal of the power module, for consuming the motor production
Raw counter electromotive force is so that the resistive brake module of the motor braking.
2. motor brake circuit as claimed in claim 1, it is characterised in that the motor brake circuit further includes：
Be connected with the positive input terminal and negative input end of the drive axle, for the electric signal that is exported to the power module or
The counter electromotive force that motor described in person produces carries out the energy-storage module of electric energy storage.
3. motor brake circuit as claimed in claim 1, it is characterised in that the reverse-filling module includes the first diode,
The anode of first diode connects the positive output end of the power module, and the cathode of first diode is described anti-
Pour in down a chimney the output terminal of module.
4. motor brake circuit as claimed in claim 1, it is characterised in that the trigger module includes the first field-effect tube,
The source electrode of first field-effect tube connects the output terminal of the reverse-filling module, and the grid of first field-effect tube meets institute
The positive output end of power module is stated, the drain electrode of first field-effect tube is the output terminal of the trigger module.
5. motor brake circuit as claimed in claim 1, it is characterised in that the brake module includes first resistor,
The output terminal of the first termination trigger module of the first resistor, the second termination power supply of the first resistor
The negative output terminal of module.
6. a kind of steering engine, including motor and the braking circuit that is connected with the motor, the braking circuit include with it is described
The drive axle that motor is connected, it is characterised in that the braking circuit further includes brake control unit, the brake control unit
It is connected by the drive axle with the motor, the brake control unit includes：
It is connected with the positive output end of power module, for making the reverse-filling mould of the power module output current one-way conduction
Block；
It is connected with the output terminal of the reverse-filling module, for when the power module is stopped power supply, according to the motor
The trigger module of the magnitude of voltage on or off of the counter electromotive force of generation；And
It is connected with the output terminal of the trigger module and the negative output terminal of the power module, for consuming the motor production
Raw counter electromotive force is so that the resistive brake module of the motor braking.
7. steering engine as claimed in claim 6, it is characterised in that the braking circuit further includes：
Be connected with the positive input terminal and negative input end of the drive axle, for the electric signal that is exported to the power module or
The counter electromotive force that motor described in person produces carries out the energy-storage module of electric energy storage.
8. steering engine as claimed in claim 6, it is characterised in that the reverse-filling module includes the first diode,
The anode of first diode connects the positive output end of the power module, and the cathode of first diode is described anti-
Pour in down a chimney the output terminal of module.
9. steering engine as claimed in claim 6, it is characterised in that the trigger module includes the first field-effect tube,
The source electrode of first field-effect tube connects the output terminal of the reverse-filling module, and the grid of first field-effect tube meets institute
The positive output end of power module is stated, the drain electrode of first field-effect tube is the output terminal of the trigger module.
10. steering engine as claimed in claim 6, it is characterised in that the brake module includes first resistor,
The output terminal of the first termination trigger module of the first resistor, the second termination power supply of the first resistor
The negative output terminal of module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721380754.XU CN207368912U (en) | 2017-10-23 | 2017-10-23 | Motor brake circuit and steering engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721380754.XU CN207368912U (en) | 2017-10-23 | 2017-10-23 | Motor brake circuit and steering engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207368912U true CN207368912U (en) | 2018-05-15 |
Family
ID=62419983
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721380754.XU Active CN207368912U (en) | 2017-10-23 | 2017-10-23 | Motor brake circuit and steering engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207368912U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109067291A (en) * | 2018-07-26 | 2018-12-21 | 苏州力生美半导体有限公司 | A kind of stepless speed regulation control of alternating current generator and energy clamping circuit and its device |
| TWI711267B (en) * | 2018-06-15 | 2020-11-21 | 虹光精密工業股份有限公司 | Braking circuit and paper lifting device |
-
2017
- 2017-10-23 CN CN201721380754.XU patent/CN207368912U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI711267B (en) * | 2018-06-15 | 2020-11-21 | 虹光精密工業股份有限公司 | Braking circuit and paper lifting device |
| US11404978B2 (en) | 2018-06-15 | 2022-08-02 | Avision Inc. | Braking circuit and paper lifting device |
| CN109067291A (en) * | 2018-07-26 | 2018-12-21 | 苏州力生美半导体有限公司 | A kind of stepless speed regulation control of alternating current generator and energy clamping circuit and its device |
| CN109067291B (en) * | 2018-07-26 | 2024-02-02 | 苏州力生美半导体有限公司 | Stepless speed regulation control and energy clamping circuit of alternating current motor and device thereof |
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