CN108205513A - Long-range Data Transmission extension apparatus - Google Patents
Long-range Data Transmission extension apparatus Download PDFInfo
- Publication number
- CN108205513A CN108205513A CN201611171452.1A CN201611171452A CN108205513A CN 108205513 A CN108205513 A CN 108205513A CN 201611171452 A CN201611171452 A CN 201611171452A CN 108205513 A CN108205513 A CN 108205513A
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- CN
- China
- Prior art keywords
- processing unit
- central processing
- long
- data transmission
- integrated circuit
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/14—Handling requests for interconnection or transfer
- G06F13/20—Handling requests for interconnection or transfer for access to input/output bus
- G06F13/24—Handling requests for interconnection or transfer for access to input/output bus using interrupt
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/40—Bus structure
- G06F13/4063—Device-to-bus coupling
- G06F13/4068—Electrical coupling
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/42—Bus transfer protocol, e.g. handshake; Synchronisation
- G06F13/4282—Bus transfer protocol, e.g. handshake; Synchronisation on a serial bus, e.g. I2C bus, SPI bus
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2213/00—Indexing scheme relating to interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F2213/0002—Serial port, e.g. RS232C
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- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Control Of Ac Motors In General (AREA)
- Control Of Electric Motors In General (AREA)
Abstract
A kind of Long-range Data Transmission extension apparatus of the present invention, including integrated circuit plate, central processing unit, processor, the processor is used to handle the differential data of the central processing unit output, and data that treated are exported again to driving circuit.Processor is directly communicated by central processing unit with integrated circuit plate in the present invention, and centre does not need to special communication, decoding chip, greatlys save cost；After the serial communication interface of processor, safer, reliable communication function can be provided, be conducive to system steady operation.
Description
Technical field
The present invention relates to a kind of Long-range Data Transmission extension apparatus more particularly to applied to high-precision, high speed, digital friendship
Flow the Long-range Data Transmission extension apparatus with integrated circuit plate in servo drive.
Background technology
Digital AC servo system is obtained in many high-tech areas and is widely applied, such as numerically-controlled machine tool, machine
In the various fields such as people, packaging facilities, radar, military issue weapons servomechanism, aerospace and frequency converter.With every field
Rapid development, the requirement to servo-drive system is also increasingly strict, different application environments to the performance requirement of servo-drive system not yet
It is identical to the greatest extent.Especially in the systems such as precise numerical control machine, robot and radar, many special want is had also been proposed to servo-drive system
It asks：At a high speed, high-precision, high reliability and stronger antijamming capability.All-digitized demodulator is watched because its own high reliability has become
Take the developing direction of control.The servo-controlled total digitalization realization that develops into of high-performance microprocessor and power electronic device carries
Condition is supplied.It is based on the totally digitilized positional servosystem critical issue to be solved:(1) reality of high-performance drive system
It is existing;(2) design of adjuster by designing suitable position control, is realized and permanent magnet synchronous motor is carried out accurately to determine
Position, makes the indexs such as positioning accuracy, locating speed, position response that can meet servo-controlled requirement.
At present, existing AC permanent-magnet synchronous servo motor and encoder are widely used in servo device.
During the control to motor, not only it needs to be determined that rotor magnetic pole initial position, rotor when motor operation is also predefined
Rotation angle and direction of rotation.Encoder, can be embedded on motor and synchronizing motors by these information in order to obtain,
So as to obtain the information of angle of rotor of motor and direction.Integrated circuit plate but has the characteristics that：1st, angle can directly be read
The absolute value of coordinate；2nd, without accumulated error；3rd, location information will not be lost after power supply excision.But resolution ratio is by binary
Digit determines, that is to say, that precision depends on digit, have at present 16,32 etc. it is a variety of.Thus it can be applied to many
In high precision, the motion control occasion of high speed.The critical issue that application integrated circuit plate needs solve is exactly communication and decoding.Mesh
Preceding is all the special chip that is provided using encoder manufacturer to realize, will greatly increase cost, while circuit is also more multiple
It is miscellaneous.
Therefore, it is necessary to invent a kind of new Long-range Data Transmission extension apparatus to solve the above problems.
Invention content
The purpose of the present invention is being directed to above-mentioned defect, a kind of new convenience, long distance safe and reliable, at low cost are provided
From data transmission extension apparatus, and it is successfully applied in digital ac servo driving device.
The present invention is in order to realize above-mentioned technical purpose, using following technological means：
A kind of Long-range Data Transmission extension apparatus, for carrying out data acquisition and processing to AC servo motor, then will processing
Data afterwards are output to the AC servo motor via driving circuit, which is connected to AC servo motor and driving circuit
Between, the Long-range Data Transmission extension apparatus includes connecting with the AC servo motor and is used to acquire AC servo electricity
The integrated circuit plate of machine rotor angle and direction information connect with the integrated circuit plate and is used to handle its acquisition exported
The central processing unit of data is connect with the central processing unit and driving circuit and respectively for handling the centre
It manages the differential data of unit output and data is exported again to the processor of driving circuit by treated.
The processor includes digital signal processing unit and is connected at the central processing unit and digital signal
The time control circuit module between unit is managed, the time control circuit module is used to complete processor and integrated circuit plate string
The timing control of row communication.
The processor further includes the decoder being connected between the central processing unit and digital signal processing unit,
The decoder is used to implement the AC Servo Motor Control algorithm and the reading and writing of integrated circuit plate data, instruction is sent and
Data decode.
The processor further includes the information being connected between the central processing unit and digital signal processing unit and hands over
Parallel operation, described information exchanger are used to implement the communication Time -based Control of the Long-range Data Transmission extension apparatus.
The processor further includes the data being connected between the central processing unit and digital signal processing unit and connects
Receiving apparatus, the data sink for receive by the integrated circuit plate transmit Lai data.
The integrated circuit plate includes difference channel module, is connected symmetrically to each other with the central processing unit.
Compared with prior art, the invention has the advantages that：Processor passes through the direct sum aggregate of central processing unit
It is communicated into circuit board, centre does not need to special communication, decoding chip, greatlys save cost；Multiple functions are set in the processor
Module fully develops and uses its potentiality；After the serial communication interface of processor, safer, reliable communication function can be provided,
Be conducive to system steady operation.
Description of the drawings
Fig. 1 is the overall structure block diagram of disclosed Long-range Data Transmission extension apparatus；
Fig. 2 is integrated circuit intralamellar part difference channel module of the present invention and central processing unit connection relationship diagram.
Specific embodiment
Disclosed Long-range Data Transmission is further described below in conjunction with drawings and examples and extends dress
It puts.
Fig. 1 discloses the overall structure of one embodiment of the invention medium and long distance data transmission extension apparatus, including electricity
Motivation 1, integrated circuit plate 2, central processing unit 3, processor 4, drive amplification circuit 5;Integrated circuit plate 2 is embedded in motor 1
In it is synchronous with motor 1 operating, so as to obtain the information of 1 rotor angle of motor and direction；Central processing unit 3 is connected to
Between motor 1 and processor 4, processor 4 is directly communicated by central processing unit 3 with integrated circuit plate, and centre does not need to
Special communication, decoding chip.
Fig. 2 discloses integrated circuit intralamellar part difference channel module in one embodiment of the invention and connects with central processing unit
Connect relationship, ADM485 in figure:Differential signal amplifier, SDAT:Serial data, SRQ:Request sends command signal, DE：Control
ADM485 data transfer direction signals, SCIRXD：DSP receives data port, SCITXD：DSP sends command port.It is most left in figure
Portion is the inside difference channel module 21 of integrated circuit plate 2;Difference channel module 21 and central processing unit 3 respectively include a piece of
The SDAT of RS-485 the interface chips ADM485, ADM485 of semiduplex serial data transmission mode are data output pins,
SRQ is data-out pin, and DE is external controlling switch, which is controlled by processor 4, when DE is high level, SDAT outputs
Data, when DE is low level, data are inputted from SRQ；DE in the inside difference channel module 21 of integrated circuit plate 2 is by integrated
Control chip inside circuit board 2 is controlled.
The technical principle that the present invention uses is as follows：The serial communication of processor 4 and integrated circuit plate 2 and coding/decoding method it is soft
Part framework uses front and rear operating mode, semiduplex serial data transmission mode and RS-485 interface standards.Entire communication reconciliation
Code work is completed by four function modules.Time control circuit module is responsible for controlling the DE letters of difference channel module chip
Number, when it is high level, integrated circuit plate can receive external command；And when for low level, integrated circuit plate can be to
External transmission data.1 underflow interrupt service routine of timer is for realizing motor control algorithms and encoder reading and writing instruction
The work such as transmission and data decoding.Data receiver work then receives interrupt service routine in serial data and completes, and is controlled for motor
Parameter information that is accurate, stablizing is provided.
It is above-mentioned to press serial communication data format, when it receives a character（Including 1 start bit, 8 data bit, 1
A stop position）Just cause and once receive interruption, and the corresponding interrupt flag bit of set, when interrupting enabled, just enter corresponding
Interrupt service routine.DSP receptions can be completely secured in the periodic reading and writing integrated circuit plate in 1 underflow interrupt routine of timer
The integrality of data.2 cycle interruption service routine of CPU timer is then intended for communication Time -based Control.DSP serial mouth data
It receives interrupt service routine and is mainly responsible for the data that reception encoder transmits.
Compared with prior art, the invention has the advantages that：Processor passes through the direct sum aggregate of central processing unit
It is communicated into circuit board, centre does not need to special communication, decoding chip, greatlys save cost；Multiple functions are set in the processor
Module fully develops and uses its potentiality；After the serial communication interface of processor, safer, reliable communication function can be provided,
Be conducive to system steady operation.
It is above disclosed to be merely a preferred embodiment of the present invention, the right of the present invention cannot be limited with this certainly
Range, therefore the equivalent variations made according to scope of the present invention patent, are still within the scope of the present invention.
Claims (5)
1. a kind of Long-range Data Transmission extension apparatus, which is characterized in that the Long-range Data Transmission extension apparatus include with
The AC servo motor connects and is used to acquire integrated circuit plate and the institute of AC servo motor rotor angle and direction information
State integrated circuit plate connect and be used to handle the central processing unit of its gathered data exported, with the central processing unit
And driving circuit connect respectively and for handle the differential data of central processing unit output and will treated data again
It exports to the processor of driving circuit；The processor includes digital signal processing unit and is connected to the central processing list
Time control circuit module between member and digital signal processing unit, the time control circuit module are used to complete processor
With the timing control of integrated circuit plate serial communication.
2. Long-range Data Transmission extension apparatus according to claim 2, which is characterized in that the processor further includes company
The decoder being connected between the central processing unit and digital signal processing unit, the decoder are used to implement the exchange
Serve Motor Control algorithm and the reading and writing of integrated circuit plate data and data decoding.
3. Long-range Data Transmission extension apparatus according to claim 2, which is characterized in that the processor further includes company
The message exchange being connected between the central processing unit and digital signal processing unit, described information exchanger are used to implement
The information exchange time control of the Long-range Data Transmission extension apparatus.
4. Long-range Data Transmission extension apparatus according to claim 3, which is characterized in that the processor further includes company
The data sink being connected between the central processing unit and digital signal processing unit, the data sink are used for
Receive by the integrated circuit plate transmit Lai data.
5. Long-range Data Transmission extension apparatus according to claim 1, which is characterized in that the integrated circuit plate includes
There is difference channel module, be connected symmetrically to each other with the central processing unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611171452.1A CN108205513A (en) | 2016-12-17 | 2016-12-17 | Long-range Data Transmission extension apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611171452.1A CN108205513A (en) | 2016-12-17 | 2016-12-17 | Long-range Data Transmission extension apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108205513A true CN108205513A (en) | 2018-06-26 |
Family
ID=62601288
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611171452.1A Withdrawn CN108205513A (en) | 2016-12-17 | 2016-12-17 | Long-range Data Transmission extension apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108205513A (en) |
-
2016
- 2016-12-17 CN CN201611171452.1A patent/CN108205513A/en not_active Withdrawn
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180626 |