CN219554822U - Three-phase permanent magnet motor system, voice coil motor system and double-brush direct current motor system based on three-phase linear current amplifier - Google Patents
Three-phase permanent magnet motor system, voice coil motor system and double-brush direct current motor system based on three-phase linear current amplifier Download PDFInfo
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- CN219554822U CN219554822U CN202223449860.2U CN202223449860U CN219554822U CN 219554822 U CN219554822 U CN 219554822U CN 202223449860 U CN202223449860 U CN 202223449860U CN 219554822 U CN219554822 U CN 219554822U
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Abstract
The utility model discloses a three-phase permanent magnet motor system, a voice coil motor system and a double-brush direct current motor system based on a three-phase linear current amplifier. The beneficial effects of the utility model are as follows: the problem that the traditional motor driver is a switch type power device for output and serious in electromagnetic interference is solved; the current closed-loop control is realized by hardware, and the system bandwidth is high; no current ripple exists when the low-inductance motor is driven, and accurate positioning can be realized; in summary, the utility model solves the problems of low electromagnetic interference and positioning precision of the traditional motor driver, and the linear amplifier has no moment ripple, no electromagnetic switching noise, high bandwidth, small steady-state torque fluctuation and high speed precision.
Description
Technical Field
The utility model relates to a motor system, in particular to a three-phase permanent magnet, voice coil and double brush direct current motor system based on a three-phase linear current amplifier, and belongs to the technical field of precision manufacturing equipment.
Background
For some nano high-precision products or workpieces, the existing common numerical control lathe cannot meet the machining requirements because of high machining requirement precision, so that the machining and the manufacturing are required to be performed by adopting an ultra-precise diamond lathe, a motor applied to the movement of a guide rail of the precise lathe is a low-inductance motor, and a linear servo amplifier is a servo driver suitable for driving the low-inductance motor to perform ultra-precise movement control.
In the prior art, the linear servo amplifier is often subjected to electromagnetic interference, so that the defects of sinusoidal current simulation, high bandwidth and the like are caused, the speed stabilization precision is not high, the motor torque fluctuation is large, and the positioning precision is low when a low-inductance motor is driven, so that the linear servo amplifier cannot be well suitable for processing and manufacturing high-precision ultra-precise products or workpieces.
Disclosure of Invention
The utility model aims to solve at least one technical problem and provide a three-phase permanent magnet motor system, a voice coil motor system and a double-brush direct current motor system based on a three-phase linear current amplifier.
The utility model realizes the above purpose through the following technical scheme: the three-phase permanent magnet motor system based on the three-phase linear current amplifier comprises a three-phase power amplifying unit forming the current amplifier and a three-phase permanent magnet motor system connected with the current amplifier, wherein the three-phase power amplifying unit comprises a first linear power unit, a second linear power unit and a third linear power unit, the three-phase permanent magnet motor system comprises a three-phase permanent magnet motor, and the current amplifier further comprises a current detecting unit, a current closed-loop controller, a direct-current voltage source and an external interface;
the input ends of the linear power unit I, the linear power unit II and the linear power unit III are connected with a direct-current voltage source, the output end of the linear power unit I, the linear power unit II and the linear power unit III are connected with a three-phase permanent magnet motor, a current detection unit formed by three current sensors detects current of each phase, a current closed-loop controller is formed by adopting an analog proportional integral controller, and an external interface receives current and control instructions by being connected with an upper computer controller.
The voice coil motor system based on the three-phase linear current amplifier comprises a three-phase power amplifying unit forming the current amplifier and a voice coil motor system connected with the current amplifier, wherein the three-phase power amplifying unit comprises a first linear power unit, a second linear power unit and a third linear power unit, the voice coil motor system comprises a voice coil motor, and the current amplifier further comprises a current detection unit, a current closed-loop controller, a direct-current voltage source and an external interface;
the input ends of the linear power unit I, the linear power unit II and the linear power unit III are connected with a direct-current voltage source, the output end of the linear power unit I, the linear power unit II and the linear power unit III are connected with a voice coil motor, a current detection unit formed by two current sensors detects current of each phase, a current closed-loop controller is formed by adopting an analog proportional integral controller, and an external interface receives current and control instructions by being connected with an upper computer controller.
The double-brush direct current motor system based on the three-phase linear current amplifier comprises a three-phase power amplifying unit forming the current amplifier and a double-brush direct current motor system connected with the current amplifier, wherein the three-phase power amplifying unit comprises a linear power unit I, a linear power unit II and a linear power unit III, the double-brush direct current motor system comprises a voice coil motor I and a voice coil motor II, and the current amplifier further comprises a current detecting unit, a current closed-loop controller, a direct current voltage source and an external interface;
the output end of the linear power unit I, the linear power unit II and the linear power unit III is connected with the voice coil motor I and the voice coil motor II respectively, and each phase of current is detected by a current detection unit formed by two current sensors, the current closed-loop controller is formed by adopting an analog proportional integral controller, and an external interface receives the current and control instructions by being connected with an upper computer controller.
As still further aspects of the utility model: the three-phase power amplifying unit formed by the linear power unit I, the linear power unit II and the linear power unit III is linear analog amplifying.
As still further aspects of the utility model: the three-phase power amplifying unit formed by the linear power unit I, the linear power unit II and the linear power unit III realizes current closed-loop control for the analog proportional-integral controller.
As still further aspects of the utility model: the amplitude and the frequency of the current of the three-phase power amplifying unit formed by the linear power unit I, the linear power unit II and the linear power unit III are given by an upper computer.
As still further aspects of the utility model: the three-phase power amplifying unit formed by the linear power unit I, the linear power unit II and the linear power unit III has the functions of enabling and protecting.
The beneficial effects of the utility model are as follows: the problem that the traditional motor driver is a switch type power device for output and serious in electromagnetic interference is solved; the current closed-loop control is realized by hardware, and the system bandwidth is high; no current ripple exists when the low-inductance motor is driven, and accurate positioning can be achieved.
In summary, the utility model solves the problems of low electromagnetic interference and positioning precision of the traditional motor driver, and the linear amplifier has no moment ripple, no electromagnetic switching noise, high bandwidth, small steady-state torque fluctuation and high speed precision.
Drawings
FIG. 1 is a schematic diagram of a three-phase permanent magnet motor system of a three-phase linear amplifier of the present utility model;
FIG. 2 is a schematic diagram of a voice coil motor system of a three-phase linear amplifier according to the present utility model;
fig. 3 is a schematic diagram of a system structure of a double brush dc motor of a three-phase linear amplifier according to the present utility model.
In the figure: 1-1, a first linear power unit, 1-2, a second linear power unit, 1-3, a third linear power unit, 2-1, a three-phase permanent magnet motor, 2-2, a voice coil motor, 2-3, a first voice coil motor, 2-4, a second voice coil motor, 3, a current detection unit, 4, a current closed-loop controller, 5, a direct-current voltage source and 6, and an external interface.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Example 1
As shown in fig. 1, a three-phase permanent magnet motor system based on a three-phase linear current amplifier comprises a three-phase power amplifying unit and a three-phase permanent magnet motor system connected with the current amplifier, wherein the three-phase power amplifying unit comprises a linear power unit I1-1, a linear power unit II 1-2 and a linear power unit III 1-3, the three-phase permanent magnet motor system comprises a three-phase permanent magnet motor 2-1, and the current amplifier further comprises a current detecting unit 3, a current closed-loop controller 4, a direct current voltage source 5 and an external interface 6;
the input ends of the linear power units I1-1, II 1-2 and III 1-3 are connected with a direct current voltage source 5, the output end is connected with a three-phase permanent magnet motor 2-1, a current detection unit 3 formed by three current sensors detects each phase of current, a current closed loop controller 4 is formed by adopting an analog proportional integral controller, and an external interface 6 receives the current and control instructions by being connected with an upper computer controller.
And three linear power amplifying units are connected with the three-phase permanent magnet motor, each linear power unit is supplied with sinusoidal current with 120 DEG of phase difference, and the amplitude and the frequency are determined by the torque and the rotating speed of the motor system. The three current detection units measure the current of each phase, and the current closed-loop control is realized through an analog proportional integral controller.
Example two
As shown in fig. 2, a voice coil motor system based on a three-phase linear current amplifier comprises a three-phase power amplifying unit and a voice coil motor system, wherein the three-phase power amplifying unit is used for forming the current amplifier, the voice coil motor system is connected with the current amplifier, the three-phase power amplifying unit comprises a first linear power unit 1-1, a second linear power unit 1-2 and a third linear power unit 1-3, the voice coil motor system comprises a voice coil motor 2-2, and the current amplifier further comprises a current detecting unit 3, a current closed-loop controller 4, a direct current voltage source 5 and an external interface 6;
the input ends of the linear power units I1-1, II 1-2 and III 1-3 are connected with a direct current voltage source 5, the output end is connected with a voice coil motor 2-2, a current detection unit 3 formed by two current sensors detects each phase of current, a current closed loop controller 4 is formed by adopting an analog proportional integral controller, and an external interface 6 receives the current and control instructions by being connected with an upper computer controller.
And the three linear power amplifying units are connected with the voice coil motor, the two linear power units form an H bridge, direct current is conducted, the amplitude is determined by the speed of the motor system, the two current detecting units measure the voice coil current, and the current closed-loop control is realized through the analog proportional integral controller.
Example III
As shown in fig. 3, a dual brush dc motor system based on a three-phase linear current amplifier includes a three-phase power amplifying unit forming a current amplifier and a dual brush dc motor system connected with the current amplifier, the three-phase power amplifying unit includes a first linear power unit 1-1, a second linear power unit 1-2, a third linear power unit 1-3, the dual brush dc motor system includes a first voice coil motor 2-3 and a second voice coil motor 2-4, the current amplifier further includes a current detecting unit 3, a current closed loop controller 4, a dc voltage source 5 and an external interface 6;
the input ends of the linear power units I1-1, II 1-2 and III 1-3 are connected with a direct current voltage source 5, the output ends of the linear power units I1-1 and III 1-3 are respectively connected with the voice coil motor I2-3 and the voice coil motor II 2-4, the current detection unit 3 formed by two current sensors detects each phase of current, the current closed-loop controller 4 is formed by adopting an analog proportional-integral controller, and the external interface 6 receives the current and control instructions by being connected with an upper computer controller.
And the two linear power amplifying units are connected with a direct current brush motor, the two linear power units form a half-bridge direct current amplifier, two paths of given direct current are led in, the amplitude is determined by the speed of the motor system, the two current detecting units measure the direct current motor current, and the current closed-loop control is realized through an analog proportional integral controller.
Example IV
In addition to all the technical features in the first embodiment, the present embodiment further includes:
the three-phase power amplifying unit formed by the linear power units I1-1, II 1-2 and III 1-3 is linear analog amplifying.
The three-phase power amplifying unit formed by the linear power units I1-1, II 1-2 and III 1-3 realizes current closed loop control for the analog proportional integral controller.
The amplitude and the frequency of the current of the three-phase power amplifying unit formed by the linear power units I1-1, II 1-2 and III 1-3 are given by an upper computer.
The three-phase power amplifying unit formed by the linear power units I1-1, II 1-2 and III 1-3 has the functions of enabling and protecting.
The embodiment of the utility model can be expanded to multiphase motors, stepping motors and other motor systems, and the linear current amplifier motor system provided by the utility model has the advantages that the current is a linear analog signal, so that the current and speed precision of the motor are improved, and a low-harmonic high-positioning-precision motor control system can be realized
Working principle: the input ends of the three provided linear power units are connected with a direct-current voltage source, the output ends of the three provided linear power units are connected with a permanent magnet motor, each phase of current is detected by a current sensor, a proportional-integral controller forms current closed-loop control, and an external interface unit is connected with an upper computer controller and receives current and control instructions. The linear amplifier meets the motor system voltage and current design requirements. The linear amplifier provided by the utility model is composed of a plurality of linear power unit modules, and can drive a voice coil motor, a brushed direct current motor and a three-phase permanent magnet alternating current motor.
It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (7)
1. A three-phase permanent magnet motor system based on a three-phase linear current amplifier is characterized in that: the three-phase permanent magnet motor system comprises a three-phase power amplifying unit forming a current amplifier and a three-phase permanent magnet motor system connected with the current amplifier, wherein the three-phase power amplifying unit comprises a first linear power unit (1-1), a second linear power unit (1-2) and a third linear power unit (1-3), the three-phase permanent magnet motor system comprises a three-phase permanent magnet motor (2-1), and the current amplifier further comprises a current detecting unit (3), a current closed-loop controller (4), a direct-current voltage source (5) and an external interface (6);
the input ends of the linear power unit I (1-1), the linear power unit II (1-2) and the linear power unit III (1-3) are connected with a direct-current voltage source (5), the output end of the linear power unit I is connected with a three-phase permanent magnet motor (2-1), each phase of current is detected by a current detection unit (3) formed by three current sensors, the current closed loop controller (4) is formed by adopting an analog proportional integral controller, and the external interface (6) receives the current and control instructions by being connected with an upper computer controller.
2. A voice coil motor system based on a three-phase linear current amplifier, characterized in that: the voice coil motor system comprises a three-phase power amplifying unit forming a current amplifier and a voice coil motor system connected with the current amplifier, wherein the three-phase power amplifying unit comprises a first linear power unit (1-1), a second linear power unit (1-2) and a third linear power unit (1-3), the voice coil motor system comprises a voice coil motor (2-2), and the current amplifier further comprises a current detecting unit (3), a current closed-loop controller (4), a direct-current voltage source (5) and an external interface (6);
the input ends of the linear power unit I (1-1), the linear power unit II (1-2) and the linear power unit III (1-3) are connected with a direct current voltage source (5), the output end of the linear power unit I is connected with the voice coil motor (2-2), a current detection unit (3) formed by two current sensors detects current of each phase, the current closed loop controller (4) is formed by adopting an analog proportional integral controller, and the external interface (6) receives current and control instructions by being connected with an upper computer controller.
3. A dual brush dc motor system based on a three-phase linear current amplifier, characterized in that: the three-phase power amplification unit comprises a linear power unit I (1-1), a linear power unit II (1-2) and a linear power unit III (1-3), the three-phase power amplification unit comprises a three-phase power amplification unit forming a current amplifier and a double-brush direct current motor system connected with the current amplifier, the double-brush direct current motor system comprises a voice coil motor I (2-3) and a voice coil motor II (2-4), and the current amplifier further comprises a current detection unit (3), a current closed-loop controller (4), a direct current voltage source (5) and an external interface (6);
the input ends of the first linear power unit (1-1), the second linear power unit (1-2) and the third linear power unit (1-3) are connected with a direct current voltage source (5), the output ends of the first linear power unit (1-1) and the third linear power unit (1-3) are respectively connected with the first voice coil motor (2-3) and the second voice coil motor (2-4), the current detection unit (3) formed by two current sensors detects current of each phase, the current closed loop controller (4) is formed by adopting an analog proportional integral controller, and the external interface (6) receives current and control instructions by being connected with an upper computer controller.
4. A motor system as claimed in any one of claims 1, 2 or 3, wherein: the three-phase power amplifying unit formed by the linear power unit I (1-1), the linear power unit II (1-2) and the linear power unit III (1-3) is linear analog amplifying.
5. The electric machine system of claim 4, wherein: the three-phase power amplifying unit formed by the linear power unit I (1-1), the linear power unit II (1-2) and the linear power unit III (1-3) is an analog proportional-integral controller to realize current closed-loop control.
6. The electric machine system of claim 4, wherein: the amplitude and the frequency of the current of the three-phase power amplifying unit formed by the linear power unit I (1-1), the linear power unit II (1-2) and the linear power unit III (1-3) are given by an upper computer.
7. The electric machine system of claim 4, wherein: the three-phase power amplifying unit formed by the linear power unit I (1-1), the linear power unit II (1-2) and the linear power unit III (1-3) has enabling and protecting functions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223449860.2U CN219554822U (en) | 2022-12-23 | 2022-12-23 | Three-phase permanent magnet motor system, voice coil motor system and double-brush direct current motor system based on three-phase linear current amplifier |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223449860.2U CN219554822U (en) | 2022-12-23 | 2022-12-23 | Three-phase permanent magnet motor system, voice coil motor system and double-brush direct current motor system based on three-phase linear current amplifier |
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| CN219554822U true CN219554822U (en) | 2023-08-18 |
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| CN202223449860.2U Active CN219554822U (en) | 2022-12-23 | 2022-12-23 | Three-phase permanent magnet motor system, voice coil motor system and double-brush direct current motor system based on three-phase linear current amplifier |
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