CN213027862U - Direct current motor control circuit - Google Patents
Direct current motor control circuit Download PDFInfo
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- CN213027862U CN213027862U CN202022378265.9U CN202022378265U CN213027862U CN 213027862 U CN213027862 U CN 213027862U CN 202022378265 U CN202022378265 U CN 202022378265U CN 213027862 U CN213027862 U CN 213027862U
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Abstract
The utility model relates to a direct current motor control circuit increases two triodes and pull-up resistance to the base of two newly-increased triodes all is connected to the controller. Compared with the prior art, the utility model discloses a set up fifth triode and sixth triode, cooperate two pull-up resistance, can realize the independent control of both sides triode and the joint control of two triodes of homonymy to when realizing the three kinds of states of stall, corotation and reversal of motor, also can realize no matter be steady state, still under the motor turns to the switching state, the phenomenon that two triodes of homonymy switched on simultaneously can not take place.
Description
Technical Field
The utility model belongs to the technical field of the electric machine control and specifically relates to a direct current motor control circuit is related to.
Background
At present, H-bridge circuits for controlling dc motors in various electronic and mechanical products, as shown in fig. 1, are composed of 4 transistors Q1-Q4 and a motor M1, in order to make the current conducting motor operate, a pair of transistors on a diagonal line must be conducted, and according to the conduction conditions of different transistor pairs, the current may flow through the motor from left to right or from right to left, so as to control the direction of the motor, as shown in fig. 1: the tube Q1 and the tube Q4 are conducted, the tube Q2 and the tube Q3 are not conducted, and current passes through the motor from the positive pole of the power supply to the right through the tube Q1 and then returns to the negative pole of the power supply through the tube Q4. Therefore, the working states of the 4 triodes need to be controlled simultaneously and correctly, the mode is complex and easy to cause errors, the same-side conduction caused by the error control of the triodes often causes the motor not to work and the triodes are damaged, and four signal wires also need to be occupied. Although the gate circuit is used for avoiding conduction of the two triodes on the same side in the prior art, the type of components is increased in the first mode, the scale advantage cannot be formed, the cost is increased undoubtedly, and in addition, the control of three states of motor stalling, forward rotation and reverse rotation cannot be realized.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a DC motor control circuit, control method and readable storage medium, through setting up fifth triode and sixth triode, cooperate two pull-up resistance, can realize the independent control of both sides triode and the joint control of two triodes of homonymy to when realizing the three kinds of states of stall of motor, corotation and reversal, also can realize no matter be steady state, still under the motor turns to the switching state, the phenomenon that two triodes of homonymy switched on simultaneously can not take place.
The purpose of the utility model can be realized through the following technical scheme:
a direct current motor control circuit comprises a first triode, a second triode, a third triode, a fourth triode and a motor, and is characterized in that the first triode and the third triode are PNP type triodes, the second triode and the fourth triode are NPN type triodes,
the emitter of the first triode is connected to the positive pole of a power supply, the collector of the first triode is respectively connected to the collector of the second triode and one pole of the input end of the motor, the emitter of the second triode is connected to the negative pole of the power supply,
the emitter of the third triode is connected to the positive pole of the power supply, the collector of the third triode is respectively connected to the collector of the fourth triode and the other pole of the input end of the motor, the emitter of the fourth triode is connected to the negative pole of the power supply,
the circuit further comprises a fifth triode, a sixth triode, a first pull-up resistor, a second pull-up resistor, a third circuit and a fourth resistor, wherein the fifth triode and the sixth triode are both NPN type triodes, a collector electrode of the fifth triode is connected to a positive electrode of a power supply through the first pull-up resistor and is respectively connected to base electrodes of the first triode and the second triode through the third resistor, a collector electrode of the sixth triode is connected to the positive electrode of the power supply through the second pull-up resistor and is respectively connected to base electrodes of the third triode and the fourth triode through the fourth resistor, and the base electrodes of the fifth triode and the sixth triode are both connected to the controller.
Furthermore, one end of the third resistor is connected to the collector of the fifth triode, and the other end of the third resistor is connected to the base electrodes of the first triode and the second triode respectively.
Furthermore, one end of the fourth resistor is connected to the collector of the sixth triode, and the other end of the fourth resistor is connected to the base of the third triode and the base of the fourth triode respectively.
Compared with the prior art, the utility model discloses following beneficial effect has:
1) through setting up fifth triode and sixth triode, the joint control of two triodes of both sides triode and two triodes of homonymy can be realized to two pull-up resistance of cooperation to when realizing the three kinds of states of stall, corotation and reversal of motor control, also can realize no matter be steady state, still under the motor turns to the switching state, the phenomenon that two triodes of homonymy switched on simultaneously can not take place.
2) Through the design of the main circuit resistor, the using amount of components can be further reduced, and therefore cost is reduced.
Drawings
FIG. 1 is a schematic diagram of a prior art control circuit;
fig. 2 is a schematic diagram of a control circuit of the present invention;
wherein: q1, first triode, Q2, second triode, Q3, third triode, Q4, fourth triode, Q5, fifth triode, Q6, sixth triode, M1, motor, R1, first pull-up resistor, R2, second pull-up resistor, R3, third resistor, R4, fourth resistor, VCC, the positive pole of power.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. The embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.
A control circuit of a direct current motor M1, as shown in figure 2, comprises a first triode Q1, a second triode Q2, a third triode Q3, a fourth triode Q4 and a motor M1, and is characterized in that the first triode Q1 and the third triode Q3 are PNP type triodes, the second triode Q2 and the fourth triode Q4 are NPN type triodes,
the emitter of the first triode Q1 is connected to the positive power supply VCC, the collectors are respectively connected to the collector of the second triode Q2 and one pole of the input end of the motor M1, the emitter of the second triode Q2 is connected to the negative power supply,
the emitter of the third triode Q3 is connected to the positive power VCC, the collector is connected to the collector of the fourth triode Q4 and the other end of the input end of the motor M1, respectively, the emitter of the fourth triode Q4 is connected to the negative power,
the circuit further comprises a fifth triode Q5, a sixth triode Q6, a first pull-up resistor R1, a second pull-up resistor R2, a third circuit and a fourth resistor R4, wherein the fifth triode Q5 and the sixth triode Q6 are NPN type triodes, a collector of the fifth triode Q5 is connected to a positive power VCC through the first pull-up resistor R1 and is respectively connected to bases of the first triode Q1 and the second triode through the third resistor R3, a collector of the sixth triode Q6 is connected to the positive power VCC through the second pull-up resistor R2 and is respectively connected to bases of the third triode Q3 and the fourth triode Q4 through the fourth resistor R4, and bases of the fifth triode Q5 and the sixth triode Q6 are both connected to the controller.
In another embodiment of the present application, one end of the third resistor R3 is connected to the collector of the fifth transistor Q5, and the other end is connected to the bases of the first transistor Q1 and the second transistor, respectively. Similarly, one end of the fourth resistor R4 is connected to the collector of the sixth transistor Q6, and the other end is connected to the bases of the third transistor Q3 and the fourth transistor, respectively.
Through setting up fifth triode Q5 and sixth triode Q6, cooperate two pull-up resistance, can realize the independent control of both sides triode and the joint control of two triodes of homonymy, thereby can design the delay that fifth triode Q5 and sixth triode Q6 switched, thereby realize the stall of motor, in the time of the control of corotation and three kinds of states of reversal, also can realize no matter be steady state, still under the motor turns to the switching state, the phenomenon that two triodes of homonymy switched on simultaneously can not take place.
Specifically, if the rotation state of the motor M1 is defined as the forward rotation state of the motor M1 through the currents Q1, M1 and Q4 as shown in fig. 2, Q5 should be on, Q6 should not be on, Q5 is on, and the collector thereof is at a low level, so Q1 is on, and Q2 is not on, and similarly, Q6 is not on, and the collector thereof is at a high level, so Q3 is not on, Q4 is on, and the motor M1 is at a reverse rotation state.
Claims (3)
1. A direct current motor control circuit comprises a first triode, a second triode, a third triode, a fourth triode and a motor, and is characterized in that the first triode and the third triode are PNP type triodes, the second triode and the fourth triode are NPN type triodes,
the emitter of the first triode is connected to the positive pole of a power supply, the collector of the first triode is respectively connected to the collector of the second triode and one pole of the input end of the motor, the emitter of the second triode is connected to the negative pole of the power supply,
the emitter of the third triode is connected to the positive pole of the power supply, the collector of the third triode is respectively connected to the collector of the fourth triode and the other pole of the input end of the motor, the emitter of the fourth triode is connected to the negative pole of the power supply,
the circuit further comprises a fifth triode, a sixth triode, a first pull-up resistor, a second pull-up resistor, a third circuit and a fourth resistor, wherein the fifth triode and the sixth triode are both NPN type triodes, a collector electrode of the fifth triode is connected to a positive electrode of a power supply through the first pull-up resistor and is respectively connected to base electrodes of the first triode and the second triode through the third resistor, a collector electrode of the sixth triode is connected to the positive electrode of the power supply through the second pull-up resistor and is respectively connected to base electrodes of the third triode and the fourth triode through the fourth resistor, and the base electrodes of the fifth triode and the sixth triode are both connected to the controller.
2. The dc motor control circuit of claim 1, wherein one end of the third resistor is connected to the collector of the fifth transistor, and the other end is connected to the bases of the first transistor and the second transistor, respectively.
3. The dc motor control circuit of claim 1, wherein one end of the fourth resistor is connected to the collector of the sixth transistor, and the other end is connected to the bases of the third transistor and the fourth transistor, respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022378265.9U CN213027862U (en) | 2020-10-23 | 2020-10-23 | Direct current motor control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022378265.9U CN213027862U (en) | 2020-10-23 | 2020-10-23 | Direct current motor control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213027862U true CN213027862U (en) | 2021-04-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022378265.9U Active CN213027862U (en) | 2020-10-23 | 2020-10-23 | Direct current motor control circuit |
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| Country | Link |
|---|---|
| CN (1) | CN213027862U (en) |
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2020
- 2020-10-23 CN CN202022378265.9U patent/CN213027862U/en active Active
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