CN106208818B - A kind of mutual exclusion driving circuit of motor H bridge - Google Patents
A kind of mutual exclusion driving circuit of motor H bridge Download PDFInfo
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- CN106208818B CN106208818B CN201610631225.6A CN201610631225A CN106208818B CN 106208818 B CN106208818 B CN 106208818B CN 201610631225 A CN201610631225 A CN 201610631225A CN 106208818 B CN106208818 B CN 106208818B
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- optocoupler
- mutual exclusion
- bridge
- bridge arm
- isolation optocoupler
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- 230000007717 exclusion Effects 0.000 title claims abstract description 54
- 238000002955 isolation Methods 0.000 claims abstract description 43
- 230000003447 ipsilateral effect Effects 0.000 claims abstract description 19
- 230000008878 coupling Effects 0.000 claims abstract description 6
- 238000010168 coupling process Methods 0.000 claims abstract description 6
- 238000005859 coupling reaction Methods 0.000 claims abstract description 6
- 230000005611 electricity Effects 0.000 claims description 7
- 239000004065 semiconductor Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 238000013475 authorization Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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
- H02P1/00—Arrangements for starting electric motors or dynamo-electric converters
- H02P1/16—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters
- H02P1/18—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting an individual dc motor
- H02P1/22—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting an individual dc motor in either direction of rotation
Abstract
The present invention relates to a kind of mutual exclusion driving circuits of motor H bridge, it include: the driving circuit being connect respectively with four bridge arms of H-bridge circuit, the bridge arm driving circuit includes the isolation optocoupler for carrying out Phototube Coupling and the mutual exclusion optocoupler for carrying out mutual exclusion with the ipsilateral bridge arm driving circuit of H bridge, mutual exclusion optocoupler on same bridge arm is concatenated with the primary side of isolation optocoupler, the secondary side of mutual exclusion optocoupler is connected from the primary side of the isolation optocoupler of ipsilateral different bridge arms, in this way when the signal for controlling the ipsilateral isolation optocoupler of H bridge is effective simultaneously, mutual exclusion optocoupler simultaneously turns on, because the secondary side of mutual exclusion optocoupler is connected from the primary side of the isolation optocoupler of ipsilateral different bridge arms, signal forms access through the secondary side of mutual exclusion optocoupler, to make isolation optocoupler end, ipsilateral upper of H bridge, the switching tube of lower bridge arm is without driving signal, and then achieve the purpose that motor driven mutual exclusion.
Description
Technical field
The present invention relates to motor-drive technique fields, in particular to a kind of mutual exclusion driving circuit of motor H bridge.
Background technique
When driving motor, the H-bridge circuit that four metal-oxide-semiconductors or pliotron are barricaded as is generallyd use, if motor H-bridge circuit
The switching tube of ipsilateral upper and lower arm simultaneously turns on, and is equivalent to the short circuit from power supply to ground, it is likely that causes three on H bridge bridge arm
Pole pipe or metal-oxide-semiconductor damage, or even power supply is burnt out, therefore need to guarantee that the ipsilateral bridge arm of H bridge will not simultaneously turn on.
A kind of direct current generator H bridge is disclosed in the Chinese utility model patent of authorization 204517703 U of Publication No. CN
Driving circuit, the H-bridge circuit include two groups of upper and lower bridge arms, i.e., upper and lower bridge arm Q1, Q4 on the left of H bridge, on the right side of H bridge it is upper,
Lower bridge arm Q2, Q3；Every group of bridge arm is equipped with driving unit and lower driving unit, has upper bridge arm driving unit such as one group of left side
A1, lower bridge arm driving unit A4, one group of right side have upper bridge arm driving unit A2, lower bridge arm driving unit A3.Each bridge arm drives
The structure of moving cell is identical, and main component is optocoupler, and the primary side of optocoupler is connect with motor control signal, secondary side and corresponding H bridge
Bridge arm connection.
The H-bridge drive circuit can be used for connecting with H-bridge circuit and be carried out by driving H-bridge circuit to motor positive and negative
Turn control, but there is no the selecting chains that design prevents the ipsilateral upper and lower bridge arm of H bridge from simultaneously turning on, therefore work as some maloperations
Or other reasons make the ipsilateral upper and lower bridge arm of H-bridge circuit control signal simultaneously it is effective when, it will lead to ipsilateral upper and lower bridge arm
Switching tube simultaneously turn on, be formed short circuit from power supply to ground in this way, and then damage H bridge switch pipe, or even burn out power supply.
Summary of the invention
To solve the problems, such as that the ipsilateral upper and lower arm of motor H-bridge circuit may simultaneously turn on, the present invention provides a kind of motor H
The mutual exclusion driving circuit of bridge.
A kind of mutual exclusion driving circuit of motor H bridge, for providing driving signal for the switching tube of two groups of upper and lower bridge arms, often
The upper and lower bridge arm of group is correspondingly arranged a upper bridge arm driving unit and a lower bridge arm driving unit；The upper bridge arm driving unit
Including the first isolation optocoupler (OP1), the primary side of first isolation optocoupler (OP1) connects upper bridge arm and controls signal, secondary side connection
Upper bridge arm switching tube；The lower bridge arm driving unit includes the second isolation optocoupler (OP2), second isolation optocoupler (OP2)
Primary side connects lower bridge arm and controls signal, and secondary side connects lower bridge arm switching tube；
The upper and lower bridge arm driving unit respectively further comprises the first mutual exclusion optocoupler (OP1 ') and the second mutual exclusion optocoupler
(OP2')；
The primary side of the first mutual exclusion optocoupler (OP1 ') concatenates to form upper bridge with the primary side of first isolation optocoupler (OP1)
Arm series loop, the secondary side of the first mutual exclusion optocoupler (OP1 ') are in parallel with the primary side of second isolation optocoupler (OP2)；
The primary side of the second mutual exclusion optocoupler (OP2 ') concatenates to form lower bridge with the primary side of second isolation optocoupler (OP2)
Arm series loop, the secondary side of the second mutual exclusion optocoupler (OP2 ') are in parallel with the primary side of first isolation optocoupler (OP1).
It further, include the first current-limiting resistance (R1) and the second current-limiting resistance in the mutual exclusion driving circuit of motor H bridge
(R2), first current-limiting resistance (R1) is series at bridge arm on H bridge and controls signal circuit, the second current-limiting resistance (R2) series connection
Signal circuit is controlled in H bridge lower bridge arm.
Further, the mutual exclusion driving circuit of motor H bridge includes the first shunt resistance (R3) and the second shunt resistance (R4),
First shunt resistance (R3) is in parallel with upper bridge arm series loop, second shunt resistance (R4) and lower bridge arm series loop
It is in parallel.
Further, the mutual exclusion driving circuit of motor H bridge includes third current-limiting resistance (R5) and the 4th current-limiting resistance (R6),
Third current-limiting resistance (R5) string is in the secondary loop of the first isolation optocoupler (OP1), the 4th current-limiting resistance (R6)
String is set to the second isolation optocoupler (OP2) secondary loop.
A kind of mutual exclusion driving circuit of motor H bridge provided by the present invention: mutual exclusion optocoupler on same bridge arm with every
Primary side concatenation from optocoupler, the secondary side of mutual exclusion optocoupler is connected from the primary side of the isolation optocoupler of ipsilateral different bridge arms.In this way as control H
When the signal of the ipsilateral isolation optocoupler of bridge is effective simultaneously, mutual exclusion optocoupler is simultaneously turned on because the secondary side of mutual exclusion optocoupler and it is ipsilateral not
Primary side with the isolation optocoupler of bridge arm is connected, and signal forms access through the secondary side of mutual exclusion optocoupler, thus end isolation optocoupler, H
The switching tube of the ipsilateral upper and lower bridge arm of bridge achievees the purpose that motor driven mutual exclusion without driving signal, can effectively prevent H
The problem of ipsilateral upper and lower bridge arm of bridge simultaneously turns on.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the mutual exclusion driving circuit of motor H bridge.
Specific embodiment
A kind of mutual exclusion driving circuit of motor H bridge, for providing driving signal for the switching tube of two groups of upper and lower bridge arms, often
The upper and lower bridge arm of group is correspondingly arranged a upper bridge arm driving unit and a lower bridge arm driving unit；The upper bridge arm driving unit
Including the first isolation optocoupler, the primary side of first isolation optocoupler connects upper bridge arm and controls signal, and secondary side connects upper bridge arm switch
Pipe；The lower bridge arm driving unit includes the second isolation optocoupler OP2, the primary side connection lower bridge arm control of second isolation optocoupler
Signal, secondary side connect lower bridge arm switching tube.
The upper and lower bridge arm driving unit respectively further comprises the first mutual exclusion optocoupler and the second mutual exclusion optocoupler；Described first mutually
The primary side of reprimand optocoupler concatenates to form upper bridge arm series loop with the primary side of first isolation optocoupler, and secondary side is isolated with described second
The primary side of optocoupler is in parallel；The primary side of the second mutual exclusion optocoupler concatenates to form lower bridge arm string with the primary side of second isolation optocoupler
Join circuit, secondary side is in parallel with the primary side of first isolation optocoupler.
The present invention will be further described in detail with reference to the accompanying drawing.
As shown in Figure 1, wherein the first isolation optocoupler is OP1, and the second isolation optocoupler is OP2, and the first mutual exclusion optocoupler is
OP1 ', the second mutual exclusion optocoupler are OP2 '.The present embodiment is both to increase above-mentioned optocoupler on the basis of existing driving circuit
The primary side of OP1 ' and OP2 ', optocoupler OP1 ' are connected with the primary side of optocoupler OP1, and the secondary side of OP1 ' is in parallel with the primary side of optocoupler OP2；Light
The primary side of coupling OP2 ' is connected with the primary side of optocoupler OP2, and the secondary side of OP2 ' is in parallel with the primary side of optocoupler OP1.
The working principle of the mutual exclusion driving circuit of entire motor H bridge is as follows:
When the systems are operating normally, under the conditions of control signal M1 is effective, electric current flows through current-limiting resistance R1 and shunts electricity
R3 is hindered, at this time since electric current is smaller, optocoupler OP1 and OP1 ' are not turned on, with the increase of electric current, when the electricity at the both ends resistance R3
After pressure reaches the conducting voltage of optocoupler OP1 and OP1 ', then optocoupler OP1 and OP1 ' conducting are provided inclined by biasing resistor R7
Voltage is set, the switching tube Q1 of H-bridge circuit is connected.Similarly, when the control signal of the switching tube Q4 of control H-bridge circuit is effective,
Switching tube Q4 conducting.At this point, the switching tube Q1 and Q4 of H-bridge circuit are simultaneously turned on, motor, which is realized, to be rotated forward.Similarly, when control H bridge electricity
When the signal of the switching tube Q2 and Q3 on road are effective, the switching tube Q2 and Q3 of H-bridge circuit are simultaneously turned on, and motor realizes reversion.
But when system works, sometimes because of some maloperations or other reason, so that the control ipsilateral bridge arm upper tube of H bridge
It is effective simultaneously with the control signal of down tube, cause top tube and down tube to simultaneously turn on, just forms short circuit from power supply to ground in this way, in turn
Cause the metal-oxide-semiconductor even damage of power supply.The present invention is to avoid the generation of above situation, devises a selecting chain, mutual exclusion electricity
The working principle on road is described below.
As shown in Figure 1, the switching tube of the upper and lower arm on the left of H bridge simultaneously turns in order to prevent, in the light for carrying out Phototube Coupling
Coupling OP1 and optocoupler OP2 primary side have concatenated optocoupler OP1 ' and optocoupler OP2 ', secondary side and the optocoupler OP2 primary side phase of optocoupler OP1 ' respectively
Even, the secondary side of optocoupler OP2 ' is connected with optocoupler OP1 primary side, in this way when the signal for controlling optocoupler OP1 and OP2 is effective simultaneously, light
Coupling OP1 ' and OP2 ' are simultaneously turned on, because the secondary side of optocoupler OP1 ' and OP2 ' are linked together with the primary side of optocoupler OP1 and OP2
, signal through optocoupler OP1 ' and OP2 ' secondary side formed access, thus make optocoupler OP1 and OP2 end, the ipsilateral bridge arm of H bridge it is upper,
Lower switch pipe achievees the purpose that motor driven mutual exclusion without driving signal.
Similarly, the upper and lower switching tube of bridge arm also realizes mutual exclusion in the same way on the right side of H bridge.
Wherein, current-limiting resistance R1, R2 can ensure that the operating current of optocoupler is limited within the scope of some.Shunt resistance R3 and R4
The conducting threshold of optocoupler input side diode can be improved first；The anti-interference of optocoupler can be improved in next.Current-limiting resistance R5,
The driving current of H-bridge circuit switching tube can be limited within the scope of some by R6.Biasing resistor R7, R8 can be used to be H-bridge circuit
Switching tube opens offer bias voltage.
Claims (4)
1. a kind of mutual exclusion driving circuit of motor H bridge, for providing driving signal for the switching tube of two groups of upper and lower bridge arms, every group
Upper and lower bridge arm is correspondingly arranged a upper bridge arm driving unit and a lower bridge arm driving unit；The upper bridge arm driving unit packet
It includes the first isolation optocoupler (OP1), the upper bridge arm control signal of the primary side connection of first isolation optocoupler (OP1), in secondary side connection
Bridge arm switching tube；The lower bridge arm driving unit includes the second isolation optocoupler (OP2), the original of second isolation optocoupler (OP2)
Side connects lower bridge arm and controls signal, and secondary side connects lower bridge arm switching tube；
It is characterized by: the upper and lower bridge arm driving unit respectively further comprises the first mutual exclusion optocoupler (OP1 ') and the second mutual exclusion light
Coupling (OP2 ')；
The primary side of the first mutual exclusion optocoupler (OP1 ') concatenates to form upper bridge arm string with the primary side of first isolation optocoupler (OP1)
Join branch, the secondary side of the first mutual exclusion optocoupler (OP1 ') is in parallel with the primary side of second isolation optocoupler (OP2)；
The primary side of the second mutual exclusion optocoupler (OP2 ') concatenates to form lower bridge arm string with the primary side of second isolation optocoupler (OP2)
Join branch, the secondary side of the second mutual exclusion optocoupler (OP2 ') is in parallel with the primary side of first isolation optocoupler (OP1)；
When the signal for controlling ipsilateral the first isolation optocoupler (OP1) of H bridge, the second isolation optocoupler (OP2) is effective simultaneously, first mutually
Reprimand optocoupler (OP1 '), the second mutual exclusion optocoupler (OP2 ') simultaneously turn on, and signal is through the first mutual exclusion optocoupler (OP1 '), the second mutual exclusion optocoupler
The secondary side of (OP2 ') forms access, to make the first isolation optocoupler (OP1), the second isolation optocoupler (OP2) cut-off.
2. a kind of mutual exclusion driving circuit of motor H bridge according to claim 1, it is characterised in that: including the first current limliting electricity
(R1) and the second current-limiting resistance (R2) are hindered, first current-limiting resistance (R1) is series at bridge arm on H bridge and controls signal branch, described
Second current-limiting resistance (R2) is series at H bridge lower bridge arm control signal branch.
3. a kind of mutual exclusion driving circuit of motor H bridge according to claim 1, it is characterised in that: shunt electricity including first
(R3) and the second shunt resistance (R4) are hindered, first shunt resistance (R3) is in parallel with upper bridge arm series arm, and described second point
Leakage resistance (R4) is in parallel with lower bridge arm series arm.
4. a kind of mutual exclusion driving circuit of motor H bridge according to claim 1, it is characterised in that: including third current limliting electricity
(R5) and the 4th current-limiting resistance (R6) are hindered, third current-limiting resistance (R5) string is returned set on the secondary side of the first isolation optocoupler (OP1)
Lu Zhong, the 4th current-limiting resistance (R6) string are set to the second isolation optocoupler (OP2) secondary loop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610631225.6A CN106208818B (en) | 2016-08-04 | 2016-08-04 | A kind of mutual exclusion driving circuit of motor H bridge |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610631225.6A CN106208818B (en) | 2016-08-04 | 2016-08-04 | A kind of mutual exclusion driving circuit of motor H bridge |
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| CN106208818B true CN106208818B (en) | 2019-01-01 |
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| CN108768226A (en) * | 2018-06-22 | 2018-11-06 | 青岛科技大学 | A kind of circuit structure based on monolithic processor controlled motor positive and inverse |
| CN110971159B (en) * | 2019-11-13 | 2022-02-08 | 齐鲁工业大学 | High-power speed regulation and protection circuit system of H-bridge direct-current motor |
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| CN103138554B (en) * | 2013-04-03 | 2015-04-22 | 西安西驰电子传动与控制有限公司 | Upper half-bridge and lower half-bridge driving interlocking method of brushless direct current motor driver |
| CN103595238A (en) * | 2013-09-29 | 2014-02-19 | 深圳市伟创电气有限公司 | Low-power IGBT (insulated gate bipolar transistor) driving interlocking circuit |
| CN203933362U (en) * | 2014-06-24 | 2014-11-05 | 广东美的集团芜湖制冷设备有限公司 | Intelligent power module and air conditioner |
| CN205283385U (en) * | 2015-12-17 | 2016-06-01 | 南京工程学院 | Prevent direct drive protection circuit of bridge arm |
| CN105743337B (en) * | 2016-04-26 | 2018-04-17 | 湖南利能科技股份有限公司 | IGBT drive signal interlock circuits |
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