CN112165282A - Stepper motor motion controller based on DDS technology - Google Patents
Stepper motor motion controller based on DDS technology Download PDFInfo
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- CN112165282A CN112165282A CN202011046046.9A CN202011046046A CN112165282A CN 112165282 A CN112165282 A CN 112165282A CN 202011046046 A CN202011046046 A CN 202011046046A CN 112165282 A CN112165282 A CN 112165282A
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- shell
- dds
- motion controller
- control module
- metal mesh
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- 238000005516 engineering process Methods 0.000 title claims abstract description 16
- 230000007246 mechanism Effects 0.000 claims abstract description 16
- 239000002184 metal Substances 0.000 claims description 25
- 238000013461 design Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 5
- 239000013618 particulate matter Substances 0.000 claims description 5
- 230000010354 integration Effects 0.000 claims description 4
- 239000002245 particle Substances 0.000 claims description 4
- 239000003365 glass fiber Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 9
- 230000017525 heat dissipation Effects 0.000 abstract description 9
- 238000006243 chemical reaction Methods 0.000 description 5
- 238000007664 blowing Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000011152 fibreglass Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003252 repetitive effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P8/00—Arrangements for controlling dynamo-electric motors rotating step by step
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/02—Details
- H05K5/0213—Venting apertures; Constructional details thereof
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/02—Details
- H05K5/0217—Mechanical details of casings
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20009—Modifications to facilitate cooling, ventilating, or heating using a gaseous coolant in electronic enclosures
- H05K7/20136—Forced ventilation, e.g. by fans
- H05K7/20145—Means for directing air flow, e.g. ducts, deflectors, plenum or guides
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Power Engineering (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
- Control Of Stepping Motors (AREA)
Abstract
The invention discloses a step motor motion controller based on a DDS (direct digital synthesizer) technology, and particularly relates to the technical field of automatic control of a step motor. According to the invention, through the arrangement of the middle shell, the bottom shell, the upper shell, the micro fan, the side through holes, the filter screen, the flow distribution mechanism, the air outlet holes and the arc-shaped plates, the flow distribution mechanism uniformly disperses air and enables the air to blow upwards, so that a good heat dissipation effect can be achieved on the board card and the control module, the heat dissipation effect on the control module can be further enhanced through guiding the air by the arc-shaped plates, components can normally work, and the control precision is ensured.
Description
Technical Field
The invention relates to the technical field of automatic control of a stepping motor, in particular to a stepping motor motion controller based on a DDS (direct digital synthesizer) technology.
Background
At present, the stepping motor is widely applied to a digital control system, along with the increase of precision, the control of the stepping motor is more and more strict, and the flexible and effective control of the stepping motor becomes an important research direction, the DDS technology is a full-digital frequency synthesizer, a digital control method capable of generating a plurality of frequencies from a reference frequency source, and comprises a phase accumulator, a waveform ROM, a D/A converter and a low-pass filter, the DDS has the characteristics of high frequency resolution, multiple output frequency points, continuous phase during frequency switching, capability of generating any waveform and convenience for integration, the DDS far exceeds the traditional frequency synthesizer in a series of performance indexes such as relative bandwidth, frequency switching time, high resolution, phase continuity, orthogonal output and integration, and along with the development of the DDS technology, the DDS technology is widely applied to communication, navigation, radar, remote control and remote measurement, And the fields of modern instrument and meter industry and the like.
A general motion controller needs to control a plurality of motors, which generate a large amount of heat, and the existing controller is usually closed, has poor heat dissipation performance, and affects the performance of components, thereby affecting the control accuracy.
The above information disclosed in this background section is only for enhancement of understanding of the background of the disclosure and therefore it may contain information that does not constitute prior art that is already known to a person of ordinary skill in the art.
Disclosure of Invention
In order to overcome the above defects in the prior art, an embodiment of the present invention provides a step motor motion controller based on DDS technology, and the technical problem to be solved by the present invention is: the existing controller is usually closed, the heat dissipation performance is poor, and the performance of components and parts is influenced, so that the control precision is influenced.
In order to achieve the purpose, the invention provides the following technical scheme: a step motor motion controller based on DDS technology comprises a middle shell, a bottom shell, an upper shell and support legs, wherein the middle shell is designed to be provided with an upper opening and a lower opening, the bottom of the upper shell is inserted into the inner side of the upper end of the upper shell, the upper end of the bottom shell is connected with the bottom of the middle shell through screws, the support legs are fixedly connected to the periphery of the bottom shell, the middle of the bottom shell is downward convex, a micro fan is fixedly mounted at the middle of the upper end of the bottom shell, side through holes are formed in two sides of the middle of the bottom shell, a filter screen is fixedly mounted on the inner sides of the two side through holes, a flow dredging mechanism is arranged at the bottom of the inner side of the middle shell and comprises a lower metal mesh, an upper metal mesh is arranged above the lower metal mesh, and the lower metal mesh and the upper metal mesh are fixedly connected with the inner side, the utility model discloses a portable air conditioner, including end shell, metal mesh, exhaust vent, integrated control module, bottom shell, exhaust vent, integrated control module, air outlet, exhaust vent, integrated control module, exhaust vent, exhaust.
In a preferred embodiment, the lower and upper metal meshes are of downwardly convex design.
In a preferred embodiment, the particulate matter is fiberglass particles, which have good thermal insulation properties.
In a preferred embodiment, the middle of the bottom end of the bottom casing is flush with the bottom ends of the legs, and both the bottom end of the bottom casing and the legs can serve as supports.
In a preferred embodiment, the two sides of the inside of the upper shell are fixedly provided with arc-shaped plates, and one ends of the arc-shaped plates, which are connected with the upper shell, are located below the air outlet.
In a preferred embodiment, the control module comprises a microprocessor, a DDS module, a PWM control module, and a speed and position feedback module, the DDS module is connected to the microprocessor, the DDS module is connected to the stepping motor through the PWM control module, and the stepping motor is further connected to the microprocessor through the speed and position feedback module.
In a preferred embodiment, the control module further comprises a touch display connected with the microprocessor, and the touch display is mounted at the upper end of the upper housing.
The invention has the technical effects and advantages that:
1. according to the invention, through the arrangement of the middle shell, the bottom shell, the upper shell, the micro fan, the side through holes, the filter screen, the flow distribution mechanism, the air outlet holes and the arc-shaped plates, the flow distribution mechanism uniformly disperses air and enables the air to blow upwards, so that a better heat dissipation effect can be achieved on the board card and the control module;
2. the invention achieves the purpose of accurately and finely adjusting the stepping motor by utilizing the characteristics of rapid frequency conversion and continuous phase transformation of the DDS module.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a partial enlarged view of the invention at a in fig. 1.
FIG. 3 is a block diagram of a control module according to the present invention.
The reference signs are:
the device comprises a middle shell 1, a bottom shell 11, an upper shell 12, a supporting leg 13, a micro fan 2, a side through hole 3, a filter screen 31, a flow dredging mechanism 4, a lower metal mesh 41, an upper metal mesh 42, particulate matters 43, a board card 5, an air outlet 6, an arc-shaped plate 7, a control module 8, a microprocessor 81, a DDS module 82, a PWM control module 83, a speed and position feedback module 84, a touch display 85 and a stepping motor 9.
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the examples set forth herein; rather, these example embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The drawings are merely schematic illustrations of the present disclosure and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and thus their repetitive description will be omitted.
Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more example embodiments. In the following description, numerous specific details are provided to give a thorough understanding of example embodiments of the disclosure. One skilled in the relevant art will recognize, however, that the subject matter of the present disclosure can be practiced without one or more of the specific details, or with other methods, components, steps, and so forth. In other instances, well-known structures, methods, implementations, or operations are not shown or described in detail to avoid obscuring aspects of the disclosure.
The invention provides a step motor motion controller based on DDS technology, which comprises a middle shell 1, a bottom shell 11, an upper shell 12 and support legs 13, wherein the middle shell 1 is designed to be provided with an upper opening and a lower opening, the bottom of the upper shell 12 is provided with an opening, the bottom end of the upper shell 12 is inserted into the inner side of the upper end of the upper shell 12, the upper end of the bottom shell 11 is connected with the bottom end of the middle shell 1 through screws, the periphery of the bottom shell 11 is fixedly connected with the support legs 13, the middle of the bottom shell 11 is in a downward convex shape, the middle of the upper end of the bottom shell 11 is fixedly provided with a micro fan 2, two sides of the middle of the bottom shell 11 are respectively provided with a side through hole 3, the inner sides of the two side through holes 3 are fixedly provided with a filter screen 31, the bottom of the inner side of the middle shell 1 is provided with a flow distributing mechanism 4, the flow, metal mesh 41 and last metal mesh 42 all with well casing 1's inside wall fixed connection down, it has particulate matter 43 to fill down between metal mesh 41 and the last metal mesh 42, 11 inboard upper portion fixed mounting of end casing has integrated circuit board 5, integrated circuit board 5 is the porous structure design, exhaust vent 6 has all been seted up to the both sides of going up casing 12 upper end, the upper end integration of integrated circuit board 5 has control module 8.
The lower metal mesh 41 and the upper metal mesh 42 are both of a downwardly convex design.
The particulate matter 43 is glass fiber particles.
The middle of the bottom end of the bottom shell 11 is flush with the bottom ends of the legs 13.
The both sides of going up casing 12 inside all fixed mounting have an arc 7, the one end that arc 7 and last casing 12 are connected is located the below of exhaust vent 6.
The control module 8 comprises a microprocessor 81, a DDS module 82, a PWM control module 83 and a speed and position feedback module 84, the DDS module 82 is connected with the microprocessor 81, the DDS module 82 is connected with the stepping motor 9 through the PWM control module 83, and the stepping motor 9 is further connected with the microprocessor 81 through the speed and position feedback module 84.
The control module 8 further comprises a touch display 85, the touch display 85 is connected with the microprocessor 81, and the touch display 85 is installed at the upper end of the upper casing 12.
As shown in fig. 1 to 3, the embodiment specifically is as follows: when heat is dissipated, the micro-fan 2 is started, wind enters from the side through holes 3 on the two sides and filters dust through the filter screen 31, the micro-fan 2 blows upwards, when the micro-fan encounters the flow dispersing mechanism 4, the wind sequentially passes through the lower metal mesh 41, gaps among particles 43 and the upper metal mesh 42 and is limited, the wind cannot rapidly pass through the middle of the flow dispersing mechanism 4, the wind flows to the two sides of the flow dispersing mechanism 4 while blowing upwards, so that the effect of enabling the wind energy to be uniformly distributed at the bottom of the flow dispersing mechanism 4 and blowing upwards is achieved, the wind passes through the flow dispersing mechanism 4 and then blows upwards through the holes in the board card 5, the effect of uniform heat dissipation can be achieved on the board card 5 and the control module 8, and when the wind passes through the arc-shaped board 7, the direction can be changed and the wind blows towards the control module 8, so that the heat dissipation effect on the control module 8 is further enhanced, the back wind is blown out through the air outlet 6;
through the arrangement of the middle shell 1, the bottom shell 11, the upper shell 12, the micro fan 2, the side through holes 3, the filter screen 31, the flow-dispersing mechanism 4, the air outlet holes 6 and the arc-shaped plate 7, the flow-dispersing mechanism 4 uniformly disperses air and enables the air to blow upwards, so that a good heat dissipation effect can be achieved on the board card 5 and the control module 8, the heat dissipation effect on the control module 8 can be further enhanced through guiding the air by the arc-shaped plate 7, components can normally work, and the control precision is ensured;
when the DDS module 82 works, every time a reference clock FS comes under the drive of a reference frequency clock, the accumulator adds the frequency control word FW to the accumulated phase number output by the register, the added result is input into the register again, the accumulator transmits the data generated when the previous reference clock acts to the accumulator, thus, the frequency control word can be accumulated continuously under the action of the clock, then the conversion from phase to amplitude is completed through table lookup, the output of the waveform memory is transmitted to the D/a converter for conversion, and then the waveform is output, and the purpose of accurately fine-tuning the stepping motor 9 is achieved by using the characteristics of fast frequency conversion and continuous phase conversion of the DDS module 82.
The model of the microprocessor 81 adopts STM32F103RBT6, and the model of the DDS module 82 adopts AD 9854.
The points to be finally explained are: first, in the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounted," "connected," and "connected" should be understood broadly, and may be a mechanical connection or an electrical connection, or a communication between two elements, and may be a direct connection, and "upper," "lower," "left," and "right" are only used to indicate a relative positional relationship, and when the absolute position of the object to be described is changed, the relative positional relationship may be changed;
secondly, the method comprises the following steps: in the drawings of the disclosed embodiments of the invention, only the structures related to the disclosed embodiments are referred to, other structures can refer to common designs, and the same embodiment and different embodiments of the invention can be combined with each other without conflict;
and finally: the above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that are within the spirit and principle of the present invention are intended to be included in the scope of the present invention.
Claims (7)
1. A step motor motion controller based on DDS technique which is characterized in that: the device comprises a middle shell (1), a bottom shell (11), an upper shell (12) and support legs (13), wherein the middle shell (1) is designed to be provided with an upper opening and a lower opening, the bottom opening of the upper shell (12) is connected with the bottom end of the upper shell (12) in an inserted manner, the upper end of the bottom shell (11) is connected with the bottom end of the middle shell (1) through screws, the support legs (13) are fixedly connected to the periphery of the bottom shell (11), the middle of the bottom shell (11) is downwards convex, a micro fan (2) is fixedly installed in the middle of the upper end of the bottom shell (11), side through holes (3) are respectively formed in two sides of the middle of the bottom shell (11), a filter screen (31) is fixedly installed on the inner sides of the side through holes (3), a flow dredging mechanism (4) is arranged at the bottom of the inner side of the middle shell (1), and the flow dredging mechanism (4) comprises a, the top of metal mesh (41) is equipped with metal mesh (42) down, metal mesh (41) and last metal mesh (42) all with the inside wall fixed connection of well casing (1) down, it has particulate matter (43) to fill between metal mesh (41) and last metal mesh (42) down, the inboard upper portion fixed mounting of end casing (11) has integrated circuit board (5), integrated circuit board (5) are the porous structure design, exhaust vent (6) have all been seted up to both sides of going up casing (12) upper end, the upper end integration of integrated circuit board (5) has control module (8).
2. A DDS technology based stepper motor motion controller as claimed in claim 1, wherein: the lower metal net (41) and the upper metal net (42) are both in a downward convex design.
3. A DDS technology based stepper motor motion controller as claimed in claim 1, wherein: the particulate matter (43) is glass fiber particles.
4. A DDS technology based stepper motor motion controller as claimed in claim 1, wherein: the middle part of the bottom end of the bottom shell (11) is flush with the bottom ends of the support legs (13).
5. A DDS technology based stepper motor motion controller as claimed in claim 1, wherein: the inner two sides of the upper shell (12) are fixedly provided with arc plates (7), and one ends of the arc plates (7) connected with the upper shell (12) are located below the air outlet holes (6).
6. A DDS technology based stepper motor motion controller as claimed in claim 1, wherein: the control module (8) comprises a microprocessor (81), a DDS module (82), a PWM control module (83) and a speed and position feedback module (84), the DDS module (82) is connected with the microprocessor (81), the DDS module (82) is connected with the stepping motor (9) through the PWM control module (83), and the stepping motor (9) is further connected with the microprocessor (81) through the speed and position feedback module (84).
7. The DDS technology-based stepper motor motion controller as claimed in claim 6, wherein: the control module (8) further comprises a touch display (85), the touch display (85) is connected with the microprocessor (81), and the touch display (85) is installed at the upper end of the upper shell (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011046046.9A CN112165282B (en) | 2020-09-29 | 2020-09-29 | Stepper motor motion controller based on DDS technology |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011046046.9A CN112165282B (en) | 2020-09-29 | 2020-09-29 | Stepper motor motion controller based on DDS technology |
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| CN112165282A true CN112165282A (en) | 2021-01-01 |
| CN112165282B CN112165282B (en) | 2022-04-05 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114679876A (en) * | 2022-03-17 | 2022-06-28 | 联想(北京)有限公司 | Electronic device |
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| CN114679876B (en) * | 2022-03-17 | 2024-05-28 | 联想(北京)有限公司 | Electronic equipment |
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| Publication number | Publication date |
|---|---|
| CN112165282B (en) | 2022-04-05 |
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