CN107783497A - A kind of numerical control press PLC control system based on pid algorithm - Google Patents
A kind of numerical control press PLC control system based on pid algorithm Download PDFInfo
- Publication number
- CN107783497A CN107783497A CN201610746010.9A CN201610746010A CN107783497A CN 107783497 A CN107783497 A CN 107783497A CN 201610746010 A CN201610746010 A CN 201610746010A CN 107783497 A CN107783497 A CN 107783497A
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- Prior art keywords
- control
- control system
- speed
- servo
- pid algorithm
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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
- G05B19/4147—Structure of the control system, e.g. common controller or multiprocessor systems, interface to servo, programmable interface controller characterised by using a programmable interface controller [PIC]
-
- 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
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/34—Director, elements to supervisory
- G05B2219/34216—Programmable motion controller
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Abstract
A kind of numerical control press PLC control system based on pid algorithm, by the use of Omron PLC as central controller, whole system fast response time, positioning precision is high, stable.The servo-control system has the characteristics of high accuracy, high reliability, fast positioning, and the energy consumption of motor operation can be greatly lowered no matter from speed control or precision controlling in servo-control system, and energy conversion efficiency is high.
Description
Art
The present invention relates to a kind of numerical control press PLC control system based on pid algorithm, suitable for mechanical field.
Background technology
Numeric Control Technology is that manufacturing industry realizes automation, flexibility, the basis of integrated production, and numerical control press is to apply numerical control
Technology carries out cold punching pressing formation to various sheet materials such as general steel plate, stainless steel and aluminium sheet etc. or a kind of of punching processing is machined
Equipment.The introducing of digital control system, user is carried out the human-computer interactive control of CNC system, improve system operability and can
Maintainability.Conventional CNC control systems are made up of motion controller and built-in type PLC, are respectively completed TRAJECTORY CONTROL and order is controlled
System.However, the control framework can cause the problem of Punching Machine Feeding is unstable, error is larger in itself, made troubles to practical application.
Microcomputer digital control technology be machine industry modernization mark, flexible manufacturing system (Flexible
Manufacturing System), computer integrated manufacturing system CIMS (Computer Integrated
Manufacturing System), intelligent manufacturing system IMS's (Intelligent Manufacturing System)
Using further explanation Numeric Control Technology has become the basis of Modern Manufacturing Technology, and its horizontal height is to weigh a country
The horizontal important symbol of the modernization of industry.The logic processing capability that microcomputer digital control technology has can enter according to different instructions
The information processing of row different modes, by way of changing information processing software, without changing circuit or machinery
Mechanism, make plant equipment that there is flexibility.
The content of the invention
The present invention proposes a kind of numerical control press PLC control system based on pid algorithm, by the use of Omron PLC in
Controller is entreated, whole system fast response time, positioning precision is high, stable.
The technical solution adopted in the present invention is.
The control system controls servo mould using position ring, speed ring, electric current loop three close-loop control pattern by PLC positions
Root tuber is according to position, speed command caused by designed mechanical part technological requirement, then passes through position, speed, current controller
P regulations are carried out to displacement error, velocity error, current error respectively and PI is adjusted, can preferably be compensated.
The control system is reaching preferable dynamic property simultaneously, is also attached with speed feed-forward, the i.e. base in PI
On plinth, be superimposed with the signal for being proportional to built-in command speed, for reduce the differential gain or motor loop damping caused by with
With error.
The current controller and speed control of the control system are controlled using PI, and positioner is controlled using P, electricity
The output of stream controller is eventually converted into voltage signal control servomotor.The rotating speed of servomotor and the pulse frequency of input signal
Rate is directly proportional, and the amount of movement of motor is then determined by umber of pulse.
The control system sends instruction by pulse and absolute displacement instructs after servo position module is configured, to
Servo-driver sends the train of pulse of specified quantity, so as to realize the location control of servomotor.PLC is controlled to servo-driver
The number of pulses of transmission, translational speed, Acceleration and deceleration time, realization are accurately positioned control.
The beneficial effects of the invention are as follows：The servo-control system has the characteristics of high accuracy, high reliability, fast positioning,
The energy consumption of motor operation, energy conversion can be greatly lowered no matter from speed control or precision controlling in servo-control system
Efficiency high.
Brief description of the drawings
Fig. 1 is the numerical control press hydraulic system block diagram of the present invention.
Embodiment
The invention will be further described with reference to the accompanying drawings and examples.
Such as Fig. 1, when outer load change, system are perturbed when causing the velocity pressure of hydraulic cylinder to change, sensor will be surveyed
The signal obtained is changed by A/D, and compared with given control signal, relatively the deviation signal of gained is as the defeated of controller
Enter, the output of controller is changed as controlled quentity controlled variable by D/A, by being acted on after amplifier on the valve element of proportional servo valve, is led to
The displacement of valve element is overregulated, to change the opening degree of valve, so as to change the flow into hydraulic cylinder, hydraulic cylinder is overcome outer
The interference of load and perturbing for system, keep stable speed and pressure.
Numerical control press is a kind of high accuracy, efficient automation equipment, and the reliability for improving numerical control press is particularly important.
The PLC of servo-drive system is according to technological requirement automatic computing engine tool component locations, and PLC position control modules are by rate signal and position
Setting value is by bus transfer to servo-driver, the actual speed and actual bit of the servomotor detected with rotary encoder
Phase shift is compared, then carries out PID regulations, caused control letter by being integrated in Digital Servo Driver the pid algorithm inside DSP
The drive circuit of number control servomotor, so as to realize pinpoint purpose.
System controls servo module according to institute using position ring, speed ring, electric current loop three close-loop control pattern by PLC positions
Position, speed command caused by the mechanical part technological requirement of design, then aligned respectively by position, speed, current controller
Shift error, velocity error, current error carry out P regulations and PI regulations, can preferably be compensated.Reaching preferable dynamic
Performance simultaneously, is also attached with speed feed-forward, i.e., on the basis of PI, is superimposed with the signal for being proportional to built-in command speed,
For reducing tracking error caused by the differential gain or the damping of motor loop.
Numerical control press Full-closed servo system will not only realize quick motion, and ensure the stability of feed motion,
Obtain higher positional precision.Displacement detection signal is fed back to servo-driver by the encoder of servomotor, and driver will be defeated
Enter the pulse frequency of signal and the frequency and umber of pulse of umber of pulse and feedback signal are contrasted, adjusted by pid algorithm control system
The size of output quantity is saved, regulation is made through speed control, positioner, current controller.Current controller and speed control
Device processed is controlled using PI, and positioner is controlled using P, and the output of current controller is eventually converted into voltage signal control servo
Motor.The rotating speed of servomotor is directly proportional to the pulse frequency of input signal, and the amount of movement of motor is then determined by umber of pulse.
Omron CJ series of PLC is modular organization form, and itself does not possess built-in positioning instruction, in configuration servo bit
After putting module, instruction is sent by pulse and absolute displacement instructs, the train of pulse of specified quantity is sent to servo-driver, from
And realize the location control of servomotor.When PLC controls the number of pulses sent to servo-driver, translational speed, acceleration and deceleration
Between, realization is accurately positioned control.
Claims (4)
1. a kind of numerical control press PLC control system based on pid algorithm, it is characterized in that：The control system is using position ring, speed
Ring, electric current loop three close-loop control pattern are spent, controls servo module to be produced according to designed mechanical part technological requirement by PLC positions
Position, speed command, then displacement error, velocity error, current error are entered respectively by position, speed, current controller
Row P is adjusted and PI regulations, can preferably be compensated.
2. a kind of numerical control press PLC control system based on pid algorithm according to claim 1, it is characterized in that：The control
System processed is reaching preferable dynamic property simultaneously, is also attached with speed feed-forward, i.e., on the basis of PI, is superimposed with direct ratio
In the signal of built-in command speed, for reducing tracking error caused by the differential gain or the damping of motor loop.
3. a kind of numerical control press PLC control system based on pid algorithm according to claim 1, it is characterized in that：The control
The current controller and speed control of system processed are controlled using PI, and positioner is controlled using P, the output of current controller
Voltage signal control servomotor is eventually converted into, the rotating speed of servomotor is directly proportional to the pulse frequency of input signal, and electric
The amount of movement of machine is then determined by umber of pulse.
4. a kind of numerical control press PLC control system based on pid algorithm according to claim 1, it is characterized in that：The control
System processed sends instruction by pulse and absolute displacement instructs, sent to servo-driver after servo position module is configured
The train of pulse of specified quantity, so as to realize the location control of servomotor, PLC controls the umber of pulse sent to servo-driver
Amount, translational speed, Acceleration and deceleration time, realization are accurately positioned control.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610746010.9A CN107783497A (en) | 2016-08-29 | 2016-08-29 | A kind of numerical control press PLC control system based on pid algorithm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610746010.9A CN107783497A (en) | 2016-08-29 | 2016-08-29 | A kind of numerical control press PLC control system based on pid algorithm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107783497A true CN107783497A (en) | 2018-03-09 |
Family
ID=61441256
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610746010.9A Pending CN107783497A (en) | 2016-08-29 | 2016-08-29 | A kind of numerical control press PLC control system based on pid algorithm |
Country Status (1)
| Country | Link |
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| CN (1) | CN107783497A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108490781A (en) * | 2018-03-21 | 2018-09-04 | 航天科工智能机器人有限责任公司 | Position closed loop feedback servo control method with self-locking performance transmission mechanism |
| CN109675983A (en) * | 2018-12-20 | 2019-04-26 | 北京计算机技术及应用研究所 | A kind of device that bending machine pressure accurately controls |
| CN110347034A (en) * | 2019-07-17 | 2019-10-18 | 广东工业大学 | A kind of control method and relevant apparatus of motion platform positioning |
-
2016
- 2016-08-29 CN CN201610746010.9A patent/CN107783497A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108490781A (en) * | 2018-03-21 | 2018-09-04 | 航天科工智能机器人有限责任公司 | Position closed loop feedback servo control method with self-locking performance transmission mechanism |
| CN109675983A (en) * | 2018-12-20 | 2019-04-26 | 北京计算机技术及应用研究所 | A kind of device that bending machine pressure accurately controls |
| CN110347034A (en) * | 2019-07-17 | 2019-10-18 | 广东工业大学 | A kind of control method and relevant apparatus of motion platform positioning |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180309 |
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| WD01 | Invention patent application deemed withdrawn after publication |