阅读说明：本技术 直流电机控制系统 (Direct current motor control system ) 是由 王长军 于 2021-03-09 设计创作，主要内容包括：本发明涉及电机技术领域,尤其是一种直流电机控制系统,包括直流电压发生单元、直流电机、稳压二极管和稳压负载,直流电压发生单元、直流电机和稳压负载顺次首尾电连接从而形成电回路,稳压二极管的阳极端与稳压负载的第一端电连接,稳压二极管的阴极端与稳压负载的第二端电连接,直流电压发生单元被配置为沿其第一端方向或第二端方向输出电压值大于稳压二极管的反向击穿电压值的直流电压。本发明通过在电机控制电路中设置稳压二极管和稳压负载的组合,克服了转向切换时流入电机的电压不稳定的缺陷,有效提高直流电机转向时的稳定性。(The invention relates to the technical field of motors, in particular to a direct current motor control system which comprises a direct current voltage generating unit, a direct current motor, a voltage stabilizing diode and a voltage stabilizing load, wherein the direct current voltage generating unit, the direct current motor and the voltage stabilizing load are sequentially and electrically connected end to form an electric loop, the anode end of the voltage stabilizing diode is electrically connected with the first end of the voltage stabilizing load, the cathode end of the voltage stabilizing diode is electrically connected with the second end of the voltage stabilizing load, and the direct current voltage generating unit is configured to output direct current voltage with a voltage value larger than the reverse breakdown voltage value of the voltage stabilizing diode along the direction of the first end or the direction of the second end. The motor control circuit is provided with the combination of the voltage stabilizing diode and the voltage stabilizing load, so that the defect of unstable voltage flowing into the motor during steering switching is overcome, and the stability of the direct current motor during steering is effectively improved.)

1. A direct current motor control system is characterized by comprising a direct current voltage generating unit (1), a direct current motor (2), a voltage stabilizing diode (3) and a voltage stabilizing load (4), wherein the direct current voltage generating unit (1), the direct current motor (2) and the voltage stabilizing load (4) are sequentially and electrically connected end to form an electric loop, the anode end of the voltage stabilizing diode (3) is electrically connected with the first end of the voltage stabilizing load (4), the cathode end of the voltage stabilizing diode (3) is electrically connected with the second end of the voltage stabilizing load (4), and the direct current voltage generating unit (1) is configured to output direct current voltage with a voltage value larger than the reverse breakdown voltage value of the voltage stabilizing diode (3) along the direction of the first end or the direction of the second end.

2. The dc motor control system according to claim 1, wherein the voltage-stabilizing load (4) is a voltage-stabilizing resistor (5).

3. The direct current motor control system according to claim 1, characterized in that the regulated load (4) is a unidirectional diode (6), the switching direction of the unidirectional diode (6) being opposite to the switching direction of the regulated diode (3).

4. The direct current motor control system according to claim 3, wherein the number of the unidirectional diodes (6) is plural, and the unidirectional diodes (6) are connected in series in the same direction.

5. The direct current motor control system according to any one of claims 1 to 4, wherein the direct current voltage generated by the direct current voltage generating unit (1) has a voltage value ranging from 12V to 250V.

Technical Field

The invention relates to the technical field of motors, in particular to a direct current motor control system.

Background

The motor is a device for converting electric energy into mechanical energy, and is characterized by that it utilizes an electrified coil to produce rotating magnetic field and make it act on rotor to form magnetoelectric power rotating torque, and is mainly formed from stator and rotor, and the direction of forced movement of electrified conducting wire in the magnetic field is related to current direction and magnetic induction line direction.

The existing motor needs to rotate positively and negatively in daily use, the electric energy is converted into mechanical energy to work when the motor rotates positively in the first half period, and the electric energy generated by reverse rotation is converted into heat energy to be dissipated by the aid of braking resistors in the prior art when the motor rotates reversely in the second half period, so that energy waste is caused, and the voltage flowing into the motor is unstable when the motor is rotated and switched, and the rotating performance of the motor is influenced.

Disclosure of Invention

The invention aims to provide a direct current motor control system to overcome one or more defects of the conventional motor during forward and reverse rotation switching.

In order to achieve the above object, the present invention discloses a dc motor control system, which includes a dc voltage generating unit, a dc motor, a zener diode, and a regulated load, wherein the dc voltage generating unit, the dc motor, and the regulated load are sequentially electrically connected end to form an electrical loop, an anode terminal of the zener diode is electrically connected to a first terminal of the regulated load, a cathode terminal of the zener diode is electrically connected to a second terminal of the regulated load, and the dc voltage generating unit is configured to output a dc voltage having a voltage value greater than a reverse breakdown voltage value of the zener diode in a direction of the first terminal or the second terminal thereof.

In some embodiments, the regulated load is a regulated resistor.

In some embodiments, the regulated load is a unidirectional diode, and the unidirectional diode is coupled in a direction opposite to the direction in which the regulated diode is coupled.

In some embodiments, the number of the unidirectional diodes is multiple, and the unidirectional diodes are connected in series in the same direction.

In some embodiments, the voltage value of the DC voltage generated by the DC voltage generation unit ranges from 12V to 250V.

The invention has the beneficial effects that: the combination of the voltage stabilizing diode and the voltage stabilizing load is arranged in the motor control circuit, so that the defect that the voltage flowing into the motor is unstable when the steering is switched is overcome, and the stability of the direct current motor during the steering is effectively improved.

Drawings

Fig. 1 is a schematic structural diagram of a dc motor control system according to an embodiment.

Fig. 2 is a schematic structural diagram of a principle structure of a dc motor control system according to a second embodiment.

Fig. 3 is a schematic structural diagram of a principle structure of a dc motor control system according to a third embodiment.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the present invention will be further described with reference to the embodiments and the accompanying drawings.

Example one

Referring to fig. 1, the dc motor control system provided in this embodiment includes a dc voltage generating unit 1, a dc motor 2, a zener diode 3, and a regulated load 4.

Specifically, the direct current voltage generating unit 1, the direct current motor 2 and the voltage stabilizing load 4 are sequentially and electrically connected end to form an electric loop, the voltage stabilizing diode 3 is connected with the voltage stabilizing load 4 in parallel, the anode end of the voltage stabilizing diode 3 is electrically connected with the first end of the voltage stabilizing load 4, and the cathode end of the voltage stabilizing diode 3 is electrically connected with the second end of the voltage stabilizing load 4; in practical use, the dc voltage generating unit 1 may output a dc voltage having a voltage value greater than the reverse breakdown voltage value of the zener diode 3 in a first terminal direction or a second terminal direction thereof, and change the rotation direction of the dc motor 2 by changing the output direction of the dc voltage.

In the present embodiment, the principle of the dc motor control system is: the direct current voltage generating unit 1 generates direct current voltage along the direction of the first end, the direct current voltage flows to the second end of the direct current voltage generating unit 1 after sequentially passing through the direct current motor 2 and the voltage stabilizing diode 3, and the direct current motor 2 rotates along one direction; when the steering of the dc motor 2 needs to be adjusted, the dc voltage generating unit 1 generates a dc voltage along the direction of the second end thereof, and the dc voltage flows to the dc motor 2 after breaking down the reverse zener diode 3, so that the dc motor 2 does not receive the dc voltage in the opposite direction immediately, and the voltage at the two ends of the zener load 4 is stabilized at the reverse breakdown voltage value (U) of the zener diode 3 at this time_Z) The voltage value of the direct current motor 2 is U-U_Z(U is a voltage value of the dc voltage generated by the dc voltage generating unit 1). The voltage value range of the DC voltage generated by the DC voltage generating unit is 12V-250V, wherein the DC voltage generated by the DC voltage generating unit 1 in the present embodimentThe voltage value of the voltage is 24V.

Example two

Based on the first embodiment, the present embodiment provides another dc motor control system, and referring to fig. 2, in the present embodiment, the voltage stabilizing load 4 is a voltage stabilizing resistor 5. When the voltage stabilizing diode 3 is damaged or short circuit is caused by other reasons, the direct current voltage generated from the second end of the direct current voltage generating unit 1 directly flows to a branch of the voltage stabilizing resistor 5, and the voltage value of the direct current motor 2 is U-U_R(U_RThe voltage value of the stabilizing resistor 5).

EXAMPLE III

Referring to fig. 3, in the present embodiment, the voltage-stabilizing load 4 is a unidirectional diode 6, wherein the number of the unidirectional diodes 6 is multiple, the unidirectional diodes 6 are connected in series in the same direction, the connection direction of the unidirectional diode 6 is opposite to the connection direction of the voltage-stabilizing diode 3, the resistance (or the sum of the resistances) of the unidirectional diodes 6 is close to the resistance of the voltage-stabilizing diode 3, the dc voltage generated from the second end of the dc voltage generating unit 1 simultaneously flows to the branch of the voltage-stabilizing diode 3 and the branch of the unidirectional diode 6, the voltage-stabilizing diode 3 is in a reverse breakdown state, and the voltages at the two ends of the unidirectional diodes 6 are stabilized at the reverse breakdown voltage value (U) of the voltage-stabilizing diode 3_Z) Meanwhile, the unidirectional diode 6 enhances a direct current signal in the circuit and improves the stability of direct current voltage.

Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that various changes, modifications and substitutions can be made without departing from the spirit and scope of the present invention. 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.