CN218678879U - Direct current motor control system - Google Patents
Direct current motor control system Download PDFInfo
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- CN218678879U CN218678879U CN202222889046.6U CN202222889046U CN218678879U CN 218678879 U CN218678879 U CN 218678879U CN 202222889046 U CN202222889046 U CN 202222889046U CN 218678879 U CN218678879 U CN 218678879U
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Abstract
The utility model provides a direct current motor control system relates to the direct current motor field. The system comprises: the direct current control system comprises a plurality of first switch units, a second switch unit, a first direct current power supply and a plurality of direct current motors, wherein the first direct current power supply is connected with one ends of the plurality of direct current motors through the plurality of first switch units respectively, the other ends of the plurality of direct current motors are connected in series in sequence, the first direct current power supply is also connected with the other end of the last direct current motor in the plurality of direct current motors through the second switch unit, the plurality of first switch units are used for controlling the rotating starting and stopping of the plurality of direct current motors, and the second switch unit is used for controlling the rotating directions of the plurality of direct current motors.
Description
Technical Field
The utility model relates to a direct current motor field particularly, relates to a direct current motor control system.
Background
The direct current motor is a rotating motor which can convert direct current electric energy into mechanical energy or convert mechanical energy into direct current electric energy, forward rotation of the direct current motor can be realized when forward voltage is applied to two ends of the direct current motor, and reverse rotation of the direct current motor can be realized when reverse voltage is applied.
In the prior art, the relay is adopted to control the forward rotation and the reverse rotation of the direct current motor, one relay is required for controlling the forward rotation and the reverse rotation, and therefore, each direct current motor needs two relays to control the rotation direction of the direct current motor. In some special scenarios, for example, all dc motors rotate in the same direction at the same time, or some dc motors rotate in the same direction at the same time, and another part of dc motors stop rotating, at this time, the cost of controlling the rotation direction of each dc motor through two relays is high, and the circuit is complex, which makes the operation complex and easily causes a fault.
Disclosure of Invention
An object of the utility model is to provide a direct current motor control system to solve among the prior art every direct current motor through its direction of rotation of two relay control the cost higher and easily cause the technical problem of trouble.
In order to achieve the above object, the embodiment of the present invention adopts the following technical solutions:
in a first aspect, an embodiment of the present invention provides a dc motor control system, including: the system comprises a plurality of first switch units, a plurality of second switch units, a first direct current power supply and a plurality of direct current motors;
the first direct-current power supply is connected with one end of each of the plurality of direct-current motors through the plurality of first switch units respectively, the other ends of the plurality of direct-current motors are sequentially connected in series, and the first direct-current power supply is also connected with the other end of the last direct-current motor in the plurality of direct-current motors through the second switch unit;
the first switch units are used for controlling the rotation start and stop of the direct current motors, and the second switch units are used for controlling the rotation directions of the direct current motors.
Optionally, the plurality of first switch units are a plurality of first relays, and the second switch unit is a second relay.
Optionally, the one end of first dc power supply is connected the normally closed contacts of a plurality of first relays, the normally closed contacts of a plurality of first relays are still connected respectively the one end of a plurality of dc motor, the other end of first dc power supply is connected the normally open contacts of a plurality of first relays.
Optionally, the other end of the first dc power supply is further connected to the normally closed contact of the second relay, the normally closed contact of the second relay is further connected to the other end of the last dc motor, and the other end of the first dc power supply is further connected to the normally open contact of the second relay.
Optionally, when one end of the first dc power supply is a positive end and the other end of the first dc power supply is a negative end;
when the normally closed contacts of the first relays are closed and the normally closed contacts of the second relays are opened, the direct current motors rotate in the forward direction; when the normally closed contacts of the plurality of first relays are opened and the normally closed contacts of the second relays are closed, the plurality of direct current motors rotate in reverse directions.
Optionally, when one end of the first dc power supply is a negative end and the other end of the first dc power supply is a positive end;
when the normally closed contacts of the first relays are closed and the normally closed contacts of the second relays are opened, the direct current motors rotate reversely; when the normally closed contacts of the plurality of first relays are opened and the normally closed contacts of the second relays are closed, the plurality of direct current motors perform forward rotation.
Optionally, the dc motor control system further comprises: a control unit;
the output end of the control unit is connected with the plurality of first switch units and the second switch unit.
Optionally, the dc motor control system further comprises: a second direct current power supply;
and the power supply end of the control unit is connected with the second direct current power supply.
Optionally, the plurality of first relays and the second relays are identical in structure.
Optionally, the control unit is a single chip microcomputer.
The utility model has the advantages that: the utility model provides a direct current motor control system, include: the utility model discloses a plurality of first switch unit, the second switch unit, first DC power supply, a plurality of DC motor, first DC power supply connects a plurality of DC motor's one end through a plurality of first switch unit respectively, a plurality of DC motor's the other end is established ties in proper order, first DC power supply still connects the last DC motor's in a plurality of DC motor's the other end through the second switch unit, a plurality of first switch unit are used for controlling the rotatory start-stop of a plurality of DC motor, the second switch unit is used for controlling a plurality of DC motor's direction of rotation, break-make through a plurality of first switch unit and second switch unit, can realize the rotation control to two directions of a plurality of DC motor, the utility model discloses a switch unit of the quantity that DC motor quantity adds one, the direction of rotation control of DC motor in the special scene has been realized, compare the relay through the twice quantity of DC motor quantity in the prior art and go to control DC motor, the quantity of components and parts has been reduced, and then the cost of control system has been reduced because of the reduction of components and parts, make to the operation between the simple control system of the control of the circuit, the reliability of the control of the components and control system.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic structural diagram of a dc motor control system according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of another dc motor control system according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of another dc motor control system according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of another dc motor control system according to an embodiment of the present invention.
An icon: a plurality of first switching units 10; a second switching unit 20; a first direct current power supply 30; a plurality of direct current motors 40; a first direct current motor 41; a second direct current motor 42; a third direct current motor 43; a fourth direct current motor 44; a control unit 50; a second dc power supply 60.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without making creative efforts belong to the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "first", "second", and the like are used only for distinguishing the description, and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
The forward rotation control and the reverse rotation control of each dc motor generally require connection of two relays so that each dc motor can independently control its operating state. However, in some special scenarios, there is no need for a certain dc motor to rotate in the forward direction while another dc motor rotates in the reverse direction, that is, all dc motors rotate in the same direction at the same time, or some dc motors rotate in the same direction at the same time while another part of dc motors stop rotating, and the cost of independently controlling each dc motor is high, the circuit is complex, and the failure rate is high.
In order to reduce direct current motor's control cost, reduce direct current motor control circuit's complexity, and then reduce the fault rate, the technical scheme of the utility model, provide a direct current motor control system, this direct current motor control system can reduce the number of components and parts, simplifies the circuit to reduce cost reduces the fault rate, improves the reliability.
A dc motor control system provided in an embodiment of the present invention is explained with reference to a plurality of specific examples as follows. Fig. 1 is a schematic structural diagram of a dc motor control system according to an embodiment of the present invention, as shown in fig. 1, the dc motor control system includes: the system comprises a plurality of first switch units 10, a plurality of second switch units 20, a first direct current power supply 30 and a plurality of direct current motors 40.
Illustratively, when the number of the dc motors in the dc motor control system is four, the plurality of first switching units 10 includes: first switch unit 1, first switch unit 2, first switch unit 3 and first switch unit 4, a plurality of direct current motor include: a first dc motor 41, a second dc motor 42, a third dc motor 43, and a fourth dc motor 44. Of course, the number of the dc motors in the dc motor control system may be other numbers, and is not particularly limited in the embodiment of the present invention.
The first dc power supply 30 may supply power to the plurality of dc motors 40 such that the plurality of dc motors 40 rotate. The first dc power supply 30 may be a dry battery, a storage battery, a dc generator, or other dc power supplies, which is not limited in the embodiment of the present invention.
The first dc power supply 30 is connected to one end of the plurality of dc motors 40 through the plurality of first switch units 10, respectively, and the plurality of first switch units 10 can control whether the electric energy of the first dc power supply 30 flows to one end of the plurality of dc motors 40. Exemplarily, first direct current power supply 30 connects the one end of first direct current motor 41 through first switch unit 1, and first direct current power supply 30 connects the one end of second direct current motor 42 through first switch unit 2 to this analogizes, the utility model discloses in do not do too much the repeated description.
The other ends of the plurality of dc motors 40 are connected in series in sequence. Illustratively, the other end of the first dc motor 41 is connected to the other end of the second dc motor 42, the other end of the second dc motor 42 is connected to the other end of the third dc motor 43, and the other end of the third dc motor 43 is connected to the other end of the fourth dc motor 44.
The first dc power supply 30 is also connected to the other end of the last dc motor of the plurality of dc motors 40 through the second switching unit 20. Whether the power of the first dc power supply 30 flows to the other end of the plurality of dc motors 40 can be controlled by the second switching unit 20. Illustratively, the first dc power supply 30 is connected to the other end of the fourth dc motor 44 through the second switching unit 20.
Alternatively, the first dc power supply 30 may be connected to one end or the other end of the last dc motor through the second switching unit 20.
The embodiment of the present invention provides an embodiment, the other ends of the plurality of dc motors 40 are sequentially connected in series, the first dc power supply 30 connects the other end of the last dc motor in the plurality of dc motors 40 through the second switch unit 20, and what can be connected by the other ends of the plurality of dc motors 40 is the same end, i.e. the same pole, of the first dc power supply.
When one pole of the first dc power supply 30 is connected to one end of the plurality of dc motors 40 through the plurality of first switch units 10 and the other pole of the first dc power supply 30 is connected to the other end of the last dc motor among the plurality of dc motors 40 through the second switch unit 20, both ends of the plurality of dc motors 40 are connected to both poles of the first dc power supply 30, respectively, and the plurality of dc motors rotate in the same direction of forward rotation or reverse rotation.
The plurality of first switch units are used for controlling the rotation start and stop of the plurality of direct current motors. If the first switch unit 2 is turned off, so that the first switch unit 2 is connected to a circuit where the first dc power supply 30 is connected to the last dc motor of the plurality of dc motors 40, both ends of the second dc motor 42 connected to the first switch unit 2 are both connected to the other pole of the first dc power supply 30, and the second dc motor 42 is not powered on and stops rotating, thereby realizing that the plurality of dc motors 40 all rotate in the same direction at the same time or that part of the dc motors rotate in the same direction and the other part of the dc motors stop rotating.
The second switch unit is used for controlling the rotation directions of the plurality of direct current motors. When one pole of the first dc power supply 30 is disconnected from one end of the plurality of dc motors 40 by the plurality of first switch units 10, that is, when the other pole of the first dc power supply 30 is connected to one end of the plurality of dc motors 40 by the plurality of first switch units 10, and the other pole of the first dc power supply 30 is disconnected from the other end of the last dc motor of the plurality of dc motors 40 by the second switch unit 20, that is, when one pole of the first dc power supply 30 is connected to the other end of the last dc motor of the plurality of dc motors 40 by the second switch unit 20, both ends of the plurality of dc motors 40 are respectively connected to both poles of the first dc power supply 30, and the plurality of dc motors rotate in the same direction, that is, in reverse rotation or forward rotation. This direction of rotation is opposite with the direction of rotation that above-mentioned paragraph corresponds, consequently, the utility model discloses a rotation control of a plurality of direct current motor's two directions.
If the first switch unit 2 is closed, so that the first switch unit 2 is connected to one pole of the first dc power supply 30, two ends of the second dc motor 42 connected to the first switch unit 2 are both connected to one pole of the first dc power supply 30, the second dc motor 42 is not powered on, and stops rotating, and it is realized that the plurality of dc motors 40 all rotate in the same direction at the same time or that part of the dc motors rotate in the same direction and the other part of the dc motors stop rotating.
The utility model provides a pair of direct current motor control system, switch element through the quantity that direct current motor quantity adds one, direct current motor's in the special scene direction of rotation control has been realized, compare the relay through the twice quantity of direct current motor quantity among the prior art and go to control direct current motor, the quantity of components and parts has been reduced, and then control system's cost has been reduced, because the reduction of components and parts quantity, make the operation to components and parts reduce, and the circuit simplification between the components and parts, can reduce control system's fault rate, control system's reliability is improved.
Further, on the basis of the structure of a dc motor control system shown in fig. 1 described above, a dc motor control system is further explained by means of possible implementation examples of the switching unit. Fig. 2 is a schematic structural diagram of another dc motor control system according to an embodiment of the present invention, as shown in fig. 2, the plurality of first switch units 10 are a plurality of first relays, and the second switch unit 20 is a second relay.
Alternatively, the plurality of first relays may be referred to as a plurality of operation control relays mainly for controlling the start of the dc motor, and the second relay may be referred to as a direction control relay mainly for controlling the operation direction of the dc motor. The first relays and the second relays are identical in structure and comprise normally closed contacts and normally open contacts.
In an embodiment of the present invention, the plurality of first relays and the plurality of second relays each include two contacts, i.e., a normally closed contact and a normally open contact. When the coil in the relay is electrified, the normally closed contact is closed, and when the coil in the relay is electrified, the normally closed contact is opened and the normally open contact is closed.
One end of the first direct current power supply 30 is connected with the normally closed contacts of the first relays, the normally closed contacts of the first relays are also respectively connected with one ends of the direct current motors 40, and the other end of the first direct current power supply 30 is connected with the normally open contacts of the first relays. When the coils in the first relays are not electrified, the normally closed contacts are closed, and one end of the first direct current power supply 30 is connected with one end of each of the direct current motors 40; when the coil in the relay is energized, the normally closed contact is opened, the normally open contact is closed, and the other end of the first dc power supply 30 is connected to one end of each of the plurality of dc motors 40. The embodiment of the utility model provides a normally closed contact and the normally open contact that can be through a plurality of first relays realize the conversion between the positive negative pole of the electric energy that a plurality of direct current motor 40's one end corresponds.
The other end of the first direct current power supply 30 is also connected with the normally closed contact of the second relay, the normally closed contact of the second relay is also connected with the other end of the last direct current motor, and the other end of the first direct current power supply 30 is also connected with the normally open contact of the second relay. When the coil in the second relay is not electrified, the normally closed contact is closed, and one end of the first direct current power supply 30 is connected with the other end of the last direct current motor; when the coil in the relay is energized, the normally closed contact is opened, the normally open contact is closed, and the other end of the first dc power supply 30 is connected to the other end of the last dc motor. The embodiment of the utility model provides a normally closed contact and normally open contact that can pass through the second relay realize the conversion between the positive negative pole of the electric energy that a plurality of direct current motor 40's the other end corresponds.
When the normally closed contacts of the first relays are closed, one end of the first direct current power supply 30 is connected with one ends of the direct current motors 40, and when the normally closed contacts of the second relays are closed, one end of the first direct current power supply 30 is connected with the other ends of the direct current motors 40, so that the direct current motors 40 do not rotate.
When the normally closed contacts of the first relays are disconnected, the other end of the first direct current power supply 30 is connected with one ends of the direct current motors 40, and when the normally closed contacts of the second relays are disconnected, the other end of the first direct current power supply 30 is also connected with the other ends of the direct current motors 40, and at the moment, the direct current motors 40 do not rotate.
When the normally closed contacts of the plurality of first relays are closed, one end of the first direct current power supply 30 is connected with one ends of the plurality of direct current motors 40 respectively, when the normally closed contacts of the second relays are opened, the normally open contacts of the second relays are closed, the other end of the first direct current power supply 30 is connected with the other ends of the plurality of direct current motors 40, and at the moment, the plurality of direct current motors 40 rotate in the same direction. And if the normally closed contact of one first relay is disconnected, the direct current motor corresponding to the first relay stops rotating.
When the normally closed contacts of the plurality of first relays are opened, the other end of the first dc power supply 30 is connected to one ends of the plurality of dc motors 40, and when the normally closed contacts of the second relays are closed, the one end of the first dc power supply 30 is connected to the other ends of the plurality of dc motors 40, and at this time, the plurality of dc motors 40 rotate in the same direction. And if the normally closed contact of one first relay is closed, the direct current motor corresponding to the first relay stops rotating.
The utility model provides a pair of direct current motor control system, a plurality of first switch unit are a plurality of first relays, the second switch unit is the second relay, the normally closed contact of a plurality of first relays is connected to first direct current power supply's one end, a plurality of direct current motor's one end is still connected respectively to a plurality of first relay's normally closed contact, the normally open contact of a plurality of first relays is connected to first direct current power supply's the other end, the normally closed contact of second relay is still connected to first direct current power supply's the other end, last direct current motor's the other end is still connected to second relay's normally closed contact, the normally open contact of second relay is still connected to first direct current power supply's the other end, through the closed of normally closed contact and normally open contact in a plurality of first relays and the second relay and the different compound mode of disconnection, the rotation of a plurality of direct current motor and the control of stopping rotation have been realized.
Further, on the basis of the structure of a dc motor control system shown in fig. 2 described above, a dc motor control system is further explained by way of a possible implementation example of the first dc power supply. Optionally, one end of the first dc power supply 30 is a positive end, and the other end of the first dc power supply 30 is a negative end.
The positive terminal is the positive pole of the first direct current power supply 30 and the negative terminal is the negative pole of the first direct current power supply 30.
When one end of the plurality of direct current motors 40 is a positive electrode and the other end of the plurality of direct current motors 40 is a negative electrode, and when the normally closed contacts of the plurality of first relays are closed, the positive electrode of the first direct current power supply 30 is respectively connected with the positive electrodes of the plurality of direct current motors 40, and when the normally closed contact of the second relay is opened, the negative electrode of the first direct current power supply 30 is connected with the negative electrodes of the plurality of direct current motors 40, and at this time, the plurality of direct current motors 40 rotate in the forward direction; when the normally closed contacts of the first relays are opened, the negative electrode of the first dc power supply 30 is connected to the positive electrodes of the dc motors 40, and when the normally closed contacts of the second relays are closed, the positive electrode of the first dc power supply 30 is connected to the negative electrodes of the dc motors 40, and at this time, the dc motors 40 rotate in the reverse direction.
When one end of the plurality of direct current motors 40 is a negative electrode, and the other end of the plurality of direct current motors 40 is a positive electrode, and when the normally closed contacts of the plurality of first relays are closed, the positive electrodes of the first direct current power supply 30 are respectively connected with the negative electrodes of the plurality of direct current motors 40, and when the normally closed contact of the second relay is opened, the negative electrode of the first direct current power supply 30 is connected with the positive electrodes of the plurality of direct current motors 40, and at this time, the plurality of direct current motors 40 rotate in the reverse direction; when the normally closed contacts of the first relays are opened, the negative electrodes of the first dc power supplies 30 are connected to the negative electrodes of the dc motors 40, respectively, and when the normally closed contacts of the second relays are closed, the positive electrodes of the first dc power supplies 30 are connected to the positive electrodes of the dc motors 40, and at this time, the dc motors 40 rotate in the forward direction.
The utility model provides a pair of direct current motor control system, first direct current power supply's one end is the positive end, and first direct current power supply's the other end is the negative end, can realize a plurality of direct current motor's forward rotation and reverse rotation's control according to the positive negative pole at direct current motor both ends.
Further, on the basis of the structure of a dc motor control system shown in fig. 2 described above, a dc motor control system is further explained by way of a possible implementation example of the first dc power supply. Optionally, one end of the first dc power supply 30 is a negative terminal, and the other end of the first dc power supply 30 is a positive terminal.
When one end of the plurality of direct current motors 40 is a positive electrode and the other end of the plurality of direct current motors 40 is a negative electrode, and when the normally closed contacts of the plurality of first relays are closed, the negative electrode of the first direct current power supply 30 is respectively connected with the positive electrodes of the plurality of direct current motors 40, and when the normally closed contact of the second relay is opened, the positive electrode of the first direct current power supply 30 is connected with the negative electrodes of the plurality of direct current motors 40, and at this time, the plurality of direct current motors 40 rotate in the reverse direction; when the normally closed contacts of the first relays are opened, the positive electrodes of the first dc power supplies 30 are connected to the positive electrodes of the dc motors 40, respectively, and when the normally closed contacts of the second relays are closed, the negative electrodes of the first dc power supplies 30 are connected to the negative electrodes of the dc motors 40, and at this time, the dc motors 40 rotate in the forward direction.
When one end of the plurality of direct current motors 40 is a negative electrode, and the other end of the plurality of direct current motors 40 is a positive electrode, and when the normally closed contacts of the plurality of first relays are closed, the negative electrode of the first direct current power supply 30 is respectively connected with the negative electrodes of the plurality of direct current motors 40, and when the normally closed contact of the second relay is opened, the positive electrode of the first direct current power supply 30 is connected with the positive electrodes of the plurality of direct current motors 40, and at this time, the plurality of direct current motors 40 rotate in the forward direction; when the normally closed contacts of the first relays are opened, the positive electrodes of the first direct current power supplies 30 are connected to the negative electrodes of the direct current motors 40, and when the normally closed contacts of the second relays are closed, the negative electrodes of the first direct current power supplies 30 are connected to the positive electrodes of the direct current motors 40, and at this time, the direct current motors 40 rotate in the reverse direction.
The utility model provides a pair of direct current motor control system, first direct current power supply's one end is the negative terminal, and first direct current power supply's the other end is the positive terminal, can realize a plurality of direct current motor's forward rotation and reverse rotation's control according to the positive negative pole at direct current motor both ends.
Further, on the basis of the structure of a dc motor control system shown in fig. 1 described above, a dc motor control system is further explained by means of possible implementation examples of the switching unit. Fig. 3 is a schematic structural diagram of another dc motor control system according to an embodiment of the present invention, as shown in fig. 3, the dc motor control system further includes: a control unit 50.
The output end of the control unit 50 is connected to the plurality of first switch units 10 and the plurality of second switch units 20, so that the control unit 50 controls the on/off of the plurality of first switch units 10 and the plurality of second switch units 20.
The dc motor control system further includes: and the power supply end of the control unit 50 of the second direct current power supply 60 is connected with the second direct current power supply 60, and the control unit 50 can be powered by the second direct current power supply to be in a normal operation state.
The control unit 50 may be a device with a calculation processing function, and in the embodiment of the present invention, the control unit 50 is a single chip microcomputer. Of course, the control unit 50 may also be other devices, and is not particularly limited in the embodiment of the present invention.
Fig. 4 is a schematic structural diagram of another dc motor control system according to an embodiment of the present invention, as shown in fig. 4, when the plurality of first switch units 10 are a plurality of first relays and the second switch unit 20 is a second relay, the plurality of first relays and the second relay have the same structure and all include coils, and the output end of the control unit 50 is connected to the coils of the plurality of first relays and the coil of the second relay.
The control unit 50 may control the energization and deenergization of the coils of the plurality of first relays and the coils of the second relays, and further control the normally closed contacts and the normally open contacts of the plurality of first relays and the second relays, to realize the forward rotation, the reverse rotation, and the stop rotation of the plurality of direct current motors.
The utility model provides a pair of direct current motor control system, a plurality of first switch unit and second switch unit are connected to the control unit's output, and second DC power supply is connected to the control unit's feed end, and the control unit is the singlechip, can control a plurality of first switch unit and second switch unit through the control unit, and then realizes a plurality of direct current motor's forward rotation, reverse rotation and stall.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A dc motor control system, comprising: the system comprises a plurality of first switch units, a plurality of second switch units, a first direct current power supply and a plurality of direct current motors;
the first direct-current power supply is connected with one end of each of the plurality of direct-current motors through the plurality of first switch units respectively, the other ends of the plurality of direct-current motors are sequentially connected in series, and the first direct-current power supply is also connected with the other end of the last direct-current motor in the plurality of direct-current motors through the second switch unit;
the plurality of first switch units are used for controlling the rotation start and stop of the plurality of direct current motors, and the second switch unit is used for controlling the rotation direction of the plurality of direct current motors.
2. The system of claim 1, wherein the plurality of first switching units are a plurality of first relays and the second switching unit is a second relay.
3. The system of claim 2, wherein one end of the first dc power source is connected to the normally closed contacts of the first relays, the normally closed contacts of the first relays are further connected to one ends of the dc motors, respectively, and the other end of the first dc power source is connected to the normally open contacts of the first relays.
4. The system of claim 2, wherein the other end of the first direct current power supply is further connected to the normally closed contact of the second relay, the normally closed contact of the second relay is further connected to the other end of the last direct current motor, and the other end of the first direct current power supply is further connected to the normally open contact of the second relay.
5. The system of claim 3 or 4, wherein when one end of the first dc power supply is a positive end and the other end of the first dc power supply is a negative end;
when the normally closed contacts of the first relays are closed and the normally closed contacts of the second relays are opened, the direct current motors rotate in the forward direction; when the normally closed contacts of the plurality of first relays are opened and the normally closed contacts of the second relays are closed, the plurality of direct current motors rotate in reverse directions.
6. The system of claim 3 or 4, wherein one end of the first DC power supply is a negative end and the other end of the first DC power supply is a positive end;
when the normally closed contacts of the first relays are closed and the normally closed contacts of the second relays are opened, the direct current motors rotate reversely; when the normally closed contacts of the plurality of first relays are opened and the normally closed contacts of the second relays are closed, the plurality of direct current motors perform forward rotation.
7. The system of claim 1, wherein the dc motor control system further comprises: a control unit;
the output end of the control unit is connected with the plurality of first switch units and the second switch unit.
8. The system of claim 7, wherein the dc motor control system further comprises: a second direct current power supply;
and the power supply end of the control unit is connected with the second direct current power supply.
9. The system of claim 2, wherein the plurality of first relays are identical in structure to the second relay.
10. The system of claim 7, wherein the control unit is a single chip microcomputer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222889046.6U CN218678879U (en) | 2022-10-31 | 2022-10-31 | Direct current motor control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222889046.6U CN218678879U (en) | 2022-10-31 | 2022-10-31 | Direct current motor control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218678879U true CN218678879U (en) | 2023-03-21 |
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