CN218829676U - Control device of servo motor - Google Patents
Control device of servo motor Download PDFInfo
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- CN218829676U CN218829676U CN202222933750.7U CN202222933750U CN218829676U CN 218829676 U CN218829676 U CN 218829676U CN 202222933750 U CN202222933750 U CN 202222933750U CN 218829676 U CN218829676 U CN 218829676U
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Abstract
The utility model relates to a servo motor's controlling means, include: an input device for receiving a user-input speed parameter; the signal conversion circuit is connected with the input equipment and is used for converting the speed parameter into a voltage signal; and the servo driver is connected with the signal conversion circuit and the servo motor and is used for controlling the running speed of the servo motor according to the voltage signal output by the signal conversion circuit. Through the utility model discloses a scheme has solved the problem that energy utilization that current lathe speed governing system exists is low, the regulation precision is wayward.
Description
Technical Field
The utility model relates to a motor technical field generally. More specifically, the present invention relates to a control device for a servo motor.
Background
The feeding servo system in numerically controlled machine tool is formed from a speed-regulating system and an additional position-controlling ring, and in the D.C. servo system, the thyristor speed-regulating system and transistor PWM pulse-width modulation system are two kinds of systems which are commonly used. In a dc servo system, a permanent magnet dc servo motor is mostly used, that is, the speed regulating system of most machine tools at present often adopts the speed regulating mode of a dc motor. The DC power is provided by a DC generator (or controllable silicon), and the speed regulation is realized by an adjustable resistor.
However, the speed regulation method using the dc motor has some problems: first, the direct current speed governing mode has the problem that energy utilization is low, and its use cost is higher. Secondly, the direct current motor needs to strike sparks often, and the motor bearing generates heat, easy wearing and tearing. Thirdly, the direct current motor and the speed regulating device are easy to break down. And fourthly, during speed adjustment, the adjustable resistor is easy to have mechanical abrasion, parameters are changed, and the integral speed adjustment precision is influenced.
Therefore, how to improve the stability and the reliability of the speed regulating device of the machine tool has important significance for ensuring the speed regulating precision and the production efficiency.
SUMMERY OF THE UTILITY MODEL
For solving above-mentioned one or more technical problem, the utility model provides a carry out the speed governing through AC servo motor to design a controlling means for AC servo motor, utilize programmable logic controller and digital-to-analog converter, convert the speed parameter of user input into the control signal to servo driver, thereby realized the electrodeless regulation to servo motor, can effectively promote energy utilization and rate, reduce the equipment loss.
Therefore, the utility model provides a servo motor's controlling means, include: an input device for receiving a user-input speed parameter; the signal conversion circuit is connected with the input equipment and is used for converting the speed parameter into a voltage signal; and the servo driver is connected with the signal conversion circuit and the servo motor and is used for controlling the running speed of the servo motor according to the voltage signal output by the signal conversion circuit.
In one embodiment, the input device includes a touch screen display for providing a human-computer interface for capturing and displaying the speed parameter input by the user.
In one embodiment, the mobile terminal further comprises a switching power supply, wherein the switching power supply is connected with the input device and is used for providing power supply for the input device.
In one embodiment, the signal conversion circuit includes a programmable logic controller and a digital-to-analog conversion circuit, the programmable logic controller is connected to the input device and is used for storing the speed parameter input by the user and generating a corresponding speed control signal, and the digital-to-analog conversion circuit is connected to the programmable logic controller and the servo driver and is used for converting the speed control signal into a voltage signal.
In one embodiment, the signal conversion circuit further includes a signal amplification circuit, and the signal amplification circuit is connected to the digital-to-analog conversion circuit and the servo driver, and is configured to amplify the voltage signal.
In one embodiment, the servo driver further comprises a filter circuit, wherein the filter circuit is connected with the signal conversion circuit and the servo driver and is used for filtering signal interference.
In one embodiment, the servo driver further comprises a mode switching control circuit, wherein the mode switching control circuit comprises a plurality of switches, and the switches are respectively connected with the enabling terminal, the forward rotation control terminal and the reverse rotation control terminal of the servo driver and are used for controlling the servo driver to rotate forward or reversely by controlling the state of the switches.
According to the utility model discloses a scheme replaces direct current motor through AC servo motor to constitute corresponding controlling means through input device, signal conversion circuit and servo driver, realized effectively having promoted the flexibility of lathe speed governing to AC servo motor's electrodeless speed regulation, and reduced energy resource consumption. Meanwhile, the control device is convenient for adjusting the feeding speed of the machine tool, and the flexibility of the speed adjusting mode of the servo motor is effectively improved.
Drawings
The above and other objects, features and advantages of exemplary embodiments of the present invention will become readily apparent from the following detailed description read in conjunction with the accompanying drawings. In the accompanying drawings, several embodiments of the present invention are illustrated by way of example and not by way of limitation, and like reference numerals designate like or corresponding parts, in which:
fig. 1 is a schematic diagram schematically illustrating a control device according to an embodiment of the present invention;
fig. 2 is a schematic diagram schematically illustrating a control device according to another embodiment of the present invention;
fig. 3 is a schematic diagram schematically illustrating a control apparatus according to still another embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by the skilled in the art without creative work belong to the protection scope of the present invention.
The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings.
Fig. 1 is a schematic diagram schematically illustrating a control device 100 according to an embodiment of the present invention.
As shown in fig. 1, the control apparatus includes an input device 101, a signal conversion circuit 102, and a servo driver 103. Wherein the input device 101 may be used to receive a user input of a speed parameter. In some embodiments, the input device 101 may take many forms of input devices, for example, the input device 101 may take the form of a touch screen display for providing a human-machine interface for capturing and displaying user-entered speed parameters. The input device can also adopt a plurality of devices such as a keyboard, a writing pad and the like.
A signal conversion circuit 102 may be connected to the input device 101 for converting the speed parameter into a voltage signal. The signal conversion circuit 102 can store and process the speed parameter information input by the user, so as to convert the speed parameter information into a voltage signal for controlling the servo driver 103, so that the servo driver can regulate the speed of the servo motor 104 according to the voltage signal. The signal conversion circuit 102 realizes speed control of the servo motor on a software level, and effectively improves flexibility and reliability of a machine tool feeding speed adjusting process.
The servo driver 103 may be connected to the signal conversion circuit 102 and the servo motor 104 to control the operation speed of the servo motor according to the voltage signal output from the signal conversion circuit. In some embodiments, the servo driver 103 may receive the voltage signal from the signal conversion circuit 102 and generate a control signal for controlling the speed of the servo motor 104. The servo driver can also be connected with the servo motor, so that the speed control of the servo motor can be realized.
Fig. 2 is a schematic diagram schematically illustrating a control device 200 according to another embodiment of the present invention.
As shown in fig. 2, the signal conversion circuit 102 may include a programmable logic controller 201 and a digital-to-analog conversion circuit 202. The programmable logic controller 201 is connected to the input device 101, and is configured to store a speed parameter input by a user and generate a corresponding speed control signal. The digital-to-analog conversion circuit 202 is connected to the programmable logic controller 201 and the servo driver 103, and is used for converting the speed control signal into a voltage signal.
In an application scenario, a user can set a speed parameter to be used by establishing communication with the programmable logic controller through a human-computer interaction interface provided by the touch display screen. When a certain speed is used, the programmable logic controller sends the speed parameter after operation into the D/A conversion circuit to output corresponding analog voltage, and then drives the alternating current servo motor through the servo driver to realize the purpose. Specifically, different speed parameters can be written into different D data registers inside a Programmable Logic Controller (PLC) through the touch display screen. And calling the speed parameters through a PLC program, and sending the called speed parameters to an analog-to-digital conversion circuit. Then, the voltage signal output from the D/A conversion circuit is sent to a servo driver. Wherein the servo driver is arranged in a speed control mode. The servo drive motor is connected to the driver output. Through the manufacturing process, the speed regulation of the alternating current servo motor instead of the direct current motor is realized.
In some embodiments, the signal conversion circuit may further include a signal amplification circuit. The signal amplifying circuit is connected with the digital-to-analog conversion circuit and the servo driver and is used for amplifying the voltage signal. The stability of speed regulation control can be effectively ensured through the signal amplification circuit.
In some embodiments, a filter circuit may also be provided. The filter circuit is connected with the signal conversion circuit and the servo driver, so that interference in the signal transmission process can be effectively filtered.
Fig. 3 is a schematic diagram schematically illustrating a control device 300 according to still another embodiment of the present invention.
As shown in fig. 3, the control device of the ac servo motor may include an input device, which may be, for example, a touch display screen of the type MT6070 iH. In some embodiments, the control device further comprises a switching power supply. The switch power supply can be connected with the input device and used for providing power supply for the input device.
The input device sends the user-entered speed parameters to a programmable logic controller, which may be, for example, a PLC of the FX1N-60MR series. The logic programmable controller can generate corresponding speed control signals according to the speed parameter information input by the user. The speed control signal can then be converted to a corresponding voltage signal by a digital-to-analog conversion circuit and sent to the servo driver. The digital-to-analog conversion module can adopt an analog quantity output board with the model number FX1N-1DA-DB, for example. After receiving the corresponding voltage signal, the servo driver can drive the servo motor to operate at a set speed according to the voltage signal. In this embodiment, the servo driver may be, for example, a GS2050T servo driver, and the servo driver is set in a speed control mode.
In some embodiments, the control device of the present invention further includes a mode switching control circuit to control the servo motor to rotate forward or backward. Specifically, the mode switching control circuit comprises a plurality of switches, and the switches are respectively connected with an enabling end, a forward rotation control end and a reverse rotation control end of the servo driver and are used for controlling the servo driver to rotate forward or reversely by controlling the state of the switches.
In an application scenario, the change-over switch may be implemented by two sets of electromagnetic relays KA1 and KA2, for example, when the servo motor needs to rotate forward, the coil of the electromagnetic relay KA1 is controlled to be powered on, and then the contacts of the KA1 are turned on simultaneously, so that the enable end and the forward rotation control end of the servo driver are powered on, and the servo motor is driven to rotate forward. Correspondingly, when the servo motor needs to be reversely rotated, the coil of the electromagnetic relay KA2 is controlled to be electrified, then the contact of the KA2 is conducted at the same time, so that the enabling end and the reverse control end of the servo driver are electrified, and the servo motor is driven to reversely rotate. The servo motor used in this embodiment may be, for example, a servo motor of 130 SJT-M150B.
Taking a feeding speed of 300 rpm as an example, 300 rpm can be written into a D500 memory of a PLC controller through a touch display screen, and information stored in the D500 memory is transmitted to a memory D8114 of a D/a conversion circuit when speed adjustment is required. Then the D/A conversion circuit connects the output analog voltage to the servo driver, and the servo driver controls the servo motor to realize the feeding speed of 300 r/min. Through the setting of the memory, the feed speed can be saved under the condition of power failure, and the working stability of the machine tool is ensured.
It should be noted that, the selection of the model of each component in the above control device is merely exemplary and not restrictive, and those skilled in the art may select other models or structures of equipment according to actual needs, which is not limited in the present invention.
In the above description of the present specification, the terms "fixed," "mounted," "connected," or "connected," and the like, are to be construed broadly unless otherwise expressly specified or limited. For example, with the term "coupled", it can be fixedly coupled, detachably coupled, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship. Therefore, unless the specification explicitly defines otherwise, those skilled in the art can understand the specific meaning of the above terms in the present invention according to specific situations.
In light of the foregoing description of the present specification, those skilled in the art will also understand that terms used herein, such as "upper," "lower," "front," "rear," "left," "right," "length," "width," "thickness," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," "center," "longitudinal," "lateral," "clockwise," or "counterclockwise," etc., indicate that the terms used herein are based on the orientations and positional relationships illustrated in the drawings of the present specification, and are intended merely for the purpose of facilitating the description and simplifying the description, and do not explicitly or implicitly indicate that the device or element being referred to must have the particular orientation, be constructed and operated in the particular orientation, and therefore the terms used in the orientation or positional relationship should not be understood or interpreted as limiting the scope of the present invention.
While various embodiments of the present invention have been shown and described herein, it will be obvious to those skilled in the art that such embodiments are provided by way of example only. Numerous modifications, changes, and substitutions will occur to those skilled in the art without departing from the spirit and scope of the present invention. It should be understood that various alternatives to the embodiments of the invention described herein may be employed in practicing the invention. The following claims are intended to define the scope of the invention and, therefore, to cover module compositions, equivalents, or alternatives falling within the scope of these claims.
Claims (7)
1. A control device of a servo motor, comprising:
an input device for receiving a user-input speed parameter;
the signal conversion circuit is connected with the input equipment and is used for converting the speed parameter into a voltage signal;
and the servo driver is connected with the signal conversion circuit and the servo motor and is used for controlling the running speed of the servo motor according to the voltage signal output by the signal conversion circuit.
2. The servo motor control apparatus of claim 1, wherein the input device comprises a touch screen display for providing a human-machine interface to obtain and display the user-input speed parameter.
3. The control apparatus of a servo motor according to claim 2, further comprising a switching power supply connected to the input device for supplying power to the input device.
4. The servo motor control apparatus of claim 1, wherein the signal conversion circuit comprises a programmable logic controller and a digital-to-analog conversion circuit, the programmable logic controller is connected to the input device for storing the speed parameter inputted by the user and generating the corresponding speed control signal, and the digital-to-analog conversion circuit is connected to the programmable logic controller and the servo driver for converting the speed control signal into a voltage signal.
5. The servo motor control device according to claim 4, wherein the signal conversion circuit further comprises a signal amplification circuit, and the signal amplification circuit is connected to the digital-to-analog conversion circuit and the servo driver and is configured to amplify the voltage signal.
6. The servo motor control device according to claim 5, further comprising a filter circuit connected to the signal conversion circuit and the servo driver for filtering signal interference.
7. The control apparatus of a servo motor according to claim 1, further comprising a mode switching control circuit, wherein the mode switching control circuit comprises a plurality of switches, and the switches are respectively connected to the enable terminal, the forward rotation control terminal, and the reverse rotation control terminal of the servo driver, and are configured to control the servo driver to rotate forward or reverse by controlling a state of the switches.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222933750.7U CN218829676U (en) | 2022-11-03 | 2022-11-03 | Control device of servo motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222933750.7U CN218829676U (en) | 2022-11-03 | 2022-11-03 | Control device of servo motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218829676U true CN218829676U (en) | 2023-04-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222933750.7U Active CN218829676U (en) | 2022-11-03 | 2022-11-03 | Control device of servo motor |
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| CN (1) | CN218829676U (en) |
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- 2022-11-03 CN CN202222933750.7U patent/CN218829676U/en active Active
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