CN105974889A - Method for improving disturbance resisting capacity and restraining temperature drift in numerical control system - Google Patents
Method for improving disturbance resisting capacity and restraining temperature drift in numerical control system Download PDFInfo
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- CN105974889A CN105974889A CN201610226803.8A CN201610226803A CN105974889A CN 105974889 A CN105974889 A CN 105974889A CN 201610226803 A CN201610226803 A CN 201610226803A CN 105974889 A CN105974889 A CN 105974889A
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- control card
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/18—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form
- G05B19/414—Structure of the control system, e.g. common controller or multiprocessor systems, interface to servo, programmable interface controller
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- Automation & Control Theory (AREA)
- Feedback Control In General (AREA)
Abstract
The invention relates to the technical field of a numerical control system, and particularly relates to a method for improving the disturbance resisting capacity and restraining temperature drift in a numerical control system. The method for improving the disturbance resisting capacity and restraining the temperature drift in the numerical control system comprises a PC module, a motion control card, an IO board and an execution mechanism, and is characterized in that the PC module is bidirectionally connected with the motion control card by adopting a data line, the motion control card is bidirectionally connected with the IO board through digital signals, and the IO board is connected to an input signal end of the execution mechanism through analog speed signals; and the digital signals are connected by adopting an RS485 communication line or an Ethernet communication line. Compared with the prior art, the stability of digital communication between the motion control card and the IO board is greatly improved; the transmission distance of analog signals is greatly shortened, and the disturbance resisting capacity is improved; influences of the temperature drift are greatly weakened, and the control precision of the system is improved; and PCB wiring of the control card is simplified, and the size of the control card is reduced, thereby being convenient for installation and field wiring, and saving the production cost and the installation cost.
Description
Technical field
The present invention relates to Computerized Numerical Control technology field, specifically a kind of digital control system improves capacity of resisting disturbance and
The method of suppression temperature drift.
Background technology
Digital control system is generally made up of PC application program, motion control card, actuator and I O board.PC applies
Program is responsible for the work such as man-machine interface alternation, path planning, the transmission of instruction, the monitoring of state and display；Motion
Control to block usual Based PC I bus, control in order to realize the coordination of multiple step/servo motor；Actuator is electricity
Machine and lathe etc., the final a series of instructions performing motion control card；I O board is usually specialized for numeral input, number
Word output, D/A output, PWM output etc..
Transmission speed control is carried out with analog voltage signal between motion control card and the actuator of traditional digital control system
Signal.Digital control system on-the-spot circumstance complication, serious interference.Such as servo inherently a strong interference source, EMI
The biggest, it is easy to interference simulation signal transmits.Digit Control Machine Tool size under normal circumstances is relatively big, controls card and the machine of execution
Cable between structure will be the longest, reaches 10 meters sometimes, and signal is easily decayed, and EMC is very poor, the prolongation of cable
Weaken the capacity of resisting disturbance of signal further.Meanwhile, transmission wire rod transfer impedance varies with temperature, and wire rod is the longest
Temperature drift effect is the most obvious, and the transmission temperature influence of analogue signal is the biggest.In traditional digital control system,
The long range propagation of analogue signal badly influences the control accuracy of digital control system.
Summary of the invention
The present invention is for overcoming the deficiencies in the prior art, it is provided that improve capacity of resisting disturbance and suppression temperature in a kind of digital control system
The method of drift.
For achieving the above object, design and a kind of digital control system improves capacity of resisting disturbance and the method suppressing temperature drift, bag
Include PC module, motion control card, I O board, actuator, it is characterised in that: PC module uses data wire two-way
Connecting motion control card, motion control card is bi-directionally connected I O board by digital signal, and I O board passes through analog quantity speed
Signal connects the input signal end of actuator；Described I O board uses data wire to be bi-directionally connected actuator；Institute
The digital signal stated uses RS485 communication line or Ethernet communication line to connect.
Described motion control card workflow is as follows:
(1) motor control card initialization；
(2) whether motion control card detection I O board exists, and is that then motion control card sends instruction, otherwise continues inspection
Survey whether I O board deposits；
(3) motion control card sends instruction；
(4) motion control card judges whether to receive data, is then to process the Echo Frame that I O board returns, otherwise sentences
It is the most overtime that data are received in disconnecting；
(5) motion control card judges that reception data are the most overtime, is that motion control card reinitializes, otherwise sentences
Whether disconnected I O board receives data；
(6) motion control card processes the Echo Frame that I O board returns；
(7) motion control card continues to send instruction.
Described I O board workflow is as follows:
(1) I O board initializes；
(2) I O board judges whether to receive the instruction that motion control card sends, and is that I O board converts instructions into mould
Intend signal output, otherwise judge to receive instruction the most overtime；
(3) I O board judges that reception instruction is the most overtime, is that I O board reinitializes, and otherwise judges whether to receive
The instruction sent to motion control card；
(4) instruction is carried out DA conversion by I O board, and the rate signal of the digital quantity of reception is converted into the speed of analog quantity
Degree signal output；
(5) I O board capturing and coding device signal, gathers universal input signal etc.；
(6) I O board responds the instruction of motion control card；
(7) I O board continues to determine whether to receive the instruction that motion control card sends.
Compared with the existing technology, motion control card has had in stability with I O board digital communication and has greatly carried the present invention
High；Substantially reduce the transmission range of analogue signal, improve capacity of resisting disturbance；Largely reducing the impact of temperature drift,
The control accuracy of raising system；Simplify control card PCB layout, reduce control card size, it is simple to install and
Field wiring, saves production cost and installation cost.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of traditional digital control system.
Fig. 2 is present configuration schematic diagram.
Fig. 3 is motion control card of the present invention and I O board workflow diagram.
Fig. 4 is RS485 communication interface figure.
Fig. 5 is Ethernet communication interface figure.
Fig. 6 is D/A change-over circuit figure.
Detailed description of the invention
Below according to accompanying drawing, the present invention is described further.
As it is shown in figure 1, carry out transmit speed control signal with analog voltage signal between motion control card and actuator.
Digital control system on-the-spot circumstance complication, serious interference.A such as servo inherently strong interference source, EMI is very big,
It is easy to the transmission of interference simulation signal.Digit Control Machine Tool size under normal circumstances is relatively big, controls between card and actuator
Cable will be the longest, reaches 10 meters sometimes, and signal is easily decayed, and EMC is very poor, and the prolongation of cable is further
Weaken the capacity of resisting disturbance of signal.Meanwhile, transmission wire rod transfer impedance varies with temperature, wire rod the longest temperature drift effect
Should be the most obvious, the transmission temperature influence of analogue signal is the biggest.In the universal model of digital control system, mould
The long range propagation intending signal badly influences the control accuracy of digital control system.
As in figure 2 it is shown, PC module uses data wire to be bi-directionally connected motion control card, motion control card is believed by numeral
Number being bi-directionally connected I O board, I O board connects the input signal end of actuator by analog quantity rate signal；Described
I O board uses data wire to be bi-directionally connected actuator；Described digital signal use RS485 communication line or
Ethernet communication line connects.
Improve method be motion control card in the way of bus communication, the speed control signal of digital quantity is sent to
I O board, then changed into analog voltage signal by I O board locally with high accuracy DA, it is transferred to actuator.
The method instead of, by the digital data transmission that capacity of resisting disturbance is the strongest, the analogue signal that original cable run distance is the longest
Transmission, analogue signal transmission length of cable can shorten to 1 meter the most shorter, substantially increase capacity of resisting disturbance
With the impact of weakening temperature drift, improve control accuracy to a great extent.
As it is shown on figure 3, motion control card workflow is as follows:
(1) motor control card initialization；
(2) whether motion control card detection I O board exists, and is that then motion control card sends instruction, otherwise continues inspection
Survey whether I O board deposits；
(3) motion control card sends instruction；
(4) motion control card judges whether to receive data, is then to process the Echo Frame that I O board returns, otherwise sentences
It is the most overtime that data are received in disconnecting；
(5) motion control card judges that reception data are the most overtime, is that motion control card reinitializes, otherwise sentences
Whether disconnected I O board receives data；
(6) motion control card processes the Echo Frame that I O board returns；
(7) motion control card continues to send instruction.
I O board workflow is as follows:
(1) I O board initializes；
(2) I O board judges whether to receive the instruction that motion control card sends, and is that I O board converts instructions into mould
Intend signal output, otherwise judge to receive instruction the most overtime；
(3) I O board judges that reception instruction is the most overtime, is that I O board reinitializes, and otherwise judges whether to receive
The instruction sent to motion control card；
(4) instruction is carried out DA conversion by I O board, and the rate signal of the digital quantity of reception is converted into the speed of analog quantity
Degree signal output；
(5) I O board capturing and coding device signal, gathers universal input signal etc.；
(6) I O board responds the instruction of motion control card；
(7) I O board continues to determine whether to receive the instruction that motion control card sends.
Whether detection I O board exists the dohandshake action i.e. controlling between card and I O board, can be by controlling card to IO
Plate sends several times, such as 3 times, and instruction of shaking hands as shown in Table 1, if receiving response, is then shaken hands successfully,
IO exists；Otherwise, I O board does not exists.The handshake frames received can be remained untouched by the transmission of I O board Echo Frame
Issue control card.
Control card and include that the rate signal of digital quantity, general output signal, PWM believe to the instruction of I O board transmission
Number etc..I O board can be converted into the voltage signal of simulation and be sent to perform after receiving the rate signal of digital quantity
Mechanism, controls card simultaneously and issues the operation opening delivery outlet and PWM as required.
I O board includes current encoder feedback signal, input signal to controlling the response data frame that card sends,
Current delivery outlet virtual condition, current PWM virtual condition etc..The code device signal collected is uploaded by I O board
To I O board, the most current input/output port state and PWM state will be uploaded.Such as table two and table three
Shown in.
As shown in Figure 4, RS485 uses full duplex transceiver mode, and traffic rate meets the transmission of digital control system signal
Requirement, differential signal capacity of resisting disturbance is strong.
As it is shown in figure 5, Ethernet is operated in 100M full-duplex communication pattern, communication speed is fast, transmission effect
Rate is high, has auto-negotiation functionality, long transmission distance.Using 16 high accuracy DA chips, Low Drift Temperature is simulated
Amount output, high linearity, fast response time.
As shown in Figure 6, it is D/A change-over circuit figure；Use 16 high-precision AD chips, low noise, height
Speed data sampling.
Table one is instruction of shaking hands, and table two is write command, and table three is reading instruction.
Table one
Table two
Table three
Claims (3)
1. a digital control system improves capacity of resisting disturbance and the method for suppression temperature drift, including PC module, motion control card, I O board, actuator, it is characterized in that: PC module uses data wire to be bi-directionally connected motion control card, motion control card is bi-directionally connected I O board by digital signal, and I O board connects the input signal end of actuator by analog quantity rate signal；Described I O board uses data wire to be bi-directionally connected actuator；Described digital signal uses RS485 communication line or Ethernet communication line to connect.
A kind of digital control system the most according to claim 1 improves capacity of resisting disturbance and the method for suppression temperature drift, it is characterised in that: described motion control card workflow is as follows:
(1) motor control card initialization；
(2) whether motion control card detection I O board exists, and is that then motion control card sends instruction, otherwise continues whether detection I O board deposits；
(3) motion control card sends instruction；
(4) motion control card judges whether to receive data, is then to process the Echo Frame that I O board returns, otherwise judges to receive data the most overtime；
(5) motion control card judges that reception data are the most overtime, is that motion control card reinitializes, otherwise judges whether I O board receives data；
(6) motion control card processes the Echo Frame that I O board returns；
(7) motion control card continues to send instruction.
A kind of digital control system the most according to claim 1 improves capacity of resisting disturbance and the method for suppression temperature drift, it is characterised in that: described I O board workflow is as follows:
(1) I O board initializes；
(2) I O board judges whether to receive the instruction that motion control card sends, and is that I O board converts instructions into analog signal output, otherwise judges to receive instruction the most overtime；
(3) I O board judges that reception instruction is the most overtime, is that I O board reinitializes, and otherwise judges whether to receive the instruction that motion control card sends；
(4) instruction is carried out DA conversion by I O board, and the rate signal of the digital quantity of reception is converted into the rate signal output of analog quantity；
(5) I O board capturing and coding device signal, gathers universal input signal etc.；
(6) I O board responds the instruction of motion control card；
(7) I O board continues to determine whether to receive the instruction that motion control card sends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610226803.8A CN105974889A (en) | 2016-04-13 | 2016-04-13 | Method for improving disturbance resisting capacity and restraining temperature drift in numerical control system |
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| CN201610226803.8A CN105974889A (en) | 2016-04-13 | 2016-04-13 | Method for improving disturbance resisting capacity and restraining temperature drift in numerical control system |
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| CN105974889A true CN105974889A (en) | 2016-09-28 |
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003186513A (en) * | 2002-10-25 | 2003-07-04 | Mitsubishi Electric Corp | Communication control method for operation board and remote i/o |
| CN1730135A (en) * | 2005-06-16 | 2006-02-08 | 上海交通大学 | Control system of intelligent perform robot based on multi-processor cooperation |
| CN201438269U (en) * | 2009-06-29 | 2010-04-14 | 深圳市凌思特科技有限公司 | Motion control main board, motion control board and motion controller |
| CN101738987A (en) * | 2009-12-14 | 2010-06-16 | 上海交通大学 | Five-axis motion control card |
| JP2010170435A (en) * | 2009-01-24 | 2010-08-05 | Tamagawa Seiki Co Ltd | System and method for instructing motion control, and motion control system |
| CN102478836A (en) * | 2010-11-23 | 2012-05-30 | 大连兆阳软件科技有限公司 | Novel PC (Personal Computer)-controlled numerical control machine tool |
| CN103076766A (en) * | 2013-01-30 | 2013-05-01 | 佛山市定中机械有限公司 | Can printing machine numerical-control system based on digital motion controller |
| CN103812830A (en) * | 2012-11-09 | 2014-05-21 | 沈阳高精数控技术有限公司 | Protocol authentication method used for bus slave station equipment |
| CN104741321A (en) * | 2015-03-17 | 2015-07-01 | 汕头轻工装备研究院 | Numerical control sorting system for fast and automatically feeding and blanking |
| CN104880994A (en) * | 2015-05-22 | 2015-09-02 | 华南理工大学 | EtherCAT bus-based open-type numerical control system and the method |
-
2016
- 2016-04-13 CN CN201610226803.8A patent/CN105974889A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003186513A (en) * | 2002-10-25 | 2003-07-04 | Mitsubishi Electric Corp | Communication control method for operation board and remote i/o |
| CN1730135A (en) * | 2005-06-16 | 2006-02-08 | 上海交通大学 | Control system of intelligent perform robot based on multi-processor cooperation |
| JP2010170435A (en) * | 2009-01-24 | 2010-08-05 | Tamagawa Seiki Co Ltd | System and method for instructing motion control, and motion control system |
| CN201438269U (en) * | 2009-06-29 | 2010-04-14 | 深圳市凌思特科技有限公司 | Motion control main board, motion control board and motion controller |
| CN101738987A (en) * | 2009-12-14 | 2010-06-16 | 上海交通大学 | Five-axis motion control card |
| CN102478836A (en) * | 2010-11-23 | 2012-05-30 | 大连兆阳软件科技有限公司 | Novel PC (Personal Computer)-controlled numerical control machine tool |
| CN103812830A (en) * | 2012-11-09 | 2014-05-21 | 沈阳高精数控技术有限公司 | Protocol authentication method used for bus slave station equipment |
| CN103076766A (en) * | 2013-01-30 | 2013-05-01 | 佛山市定中机械有限公司 | Can printing machine numerical-control system based on digital motion controller |
| CN104741321A (en) * | 2015-03-17 | 2015-07-01 | 汕头轻工装备研究院 | Numerical control sorting system for fast and automatically feeding and blanking |
| CN104880994A (en) * | 2015-05-22 | 2015-09-02 | 华南理工大学 | EtherCAT bus-based open-type numerical control system and the method |
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Address after: 200240 No. 953 lane, Jianchuan Road, Minhang District, Shanghai 322 Applicant after: Shanghai Pak Chu electronic Polytron Technologies Inc Address before: 200240 west two floor, 2 building, 940 Jianchuan Road, Minhang District, Shanghai. Applicant before: Shanghai Bochu Electronic Technology Co., Ltd. |
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Application publication date: 20160928 |
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