CN105334796A - Accurate positioning method based on PLC controller - Google Patents
Accurate positioning method based on PLC controller Download PDFInfo
- Publication number
- CN105334796A CN105334796A CN201510799906.9A CN201510799906A CN105334796A CN 105334796 A CN105334796 A CN 105334796A CN 201510799906 A CN201510799906 A CN 201510799906A CN 105334796 A CN105334796 A CN 105334796A
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- CN
- China
- Prior art keywords
- plc
- workpiece
- setting value
- position setting
- station
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Classifications
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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
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/05—Programmable logic controllers, e.g. simulating logic interconnections of signals according to ladder diagrams or function charts
- G05B19/054—Input/output
-
- 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
- G05B2219/10—Plc systems
- G05B2219/13—Plc programming
- G05B2219/13164—Remote and local programming unit, control panel
Abstract
The invention discloses an accurate positioning method based on a PLC controller. The positioning control flow comprises the following steps: starting positioning; correcting an original point; setting a position set value of a station; receiving the position set value of the station from an upper computer system by a PLC, and simultaneously calculating an actual value of a current position of a workpiece by the PLC; outputting corresponding pulse signals to a servo motor by the PLC according to the position set value and the actual value, and driving the workpiece to rotate by the servo motor until the difference between the position set value and the actual value is less than 0.02mm, thereby finishing the automatic positioning. The accurate positioning method has the advantages that the positioning precision is high, a program implementation algorithm is simple, the control effect is stable, the response speed is high, the rapid positioning of the workpiece can be realized, and the economic benefit of the production is increased.
Description
Technical field
The present invention relates to a kind of experimental teaching equipment control technology field, be specifically related to a kind of accurate positioning method based on PLC.
Background technology
The core of machine vision is image procossing, in recent years, develops along with domestic machine vision technique, and all trades and professions are widely used appearance to employing machine vision image processing equipment.Domestic relevant universities and colleges, research institute and enterprise also actively think, feel free to try for nearly 2 years, progressively start to move towards industry spot application in image procossing.But, existing visual experiment platform is generally simple beam, camera can be installed, light source, student or researchist are when assessing vision sample, can not the actual conditions of real simulation industry spot, user cannot the process of real understanding Industry Control, has a strong impact on quality of instruction or quality of research; And correlation machine visual experiment platform operations is difficult, flexibility ratio is poor, the analog detection research that have impact on scientific research to a great extent, impart knowledge to students in commercial production.
By machine vision platform application in scientific research, impart knowledge to students in commercial production analog detection research time, generally need to use many kinds of work position to carry out analog sample state in actual production, the positioning precision of current positioning system is low, attainable workpiece station is few, can not meet current requirement of experiment.
Therefore, the problems referred to above urgently to be resolved hurrily.
Summary of the invention
Goal of the invention: the object of the invention is, for problem existing in above-mentioned prior art, to propose the accurate positioning method based on PLC of a kind of high precision, multistation.
Technical scheme: the invention discloses a kind of accurate positioning method based on PLC, described positioning control flow process comprises:
Step 1: positioning starting;
Step 2: origin correction;
Step 3: the position setting value of setting station;
Step 3: described PLC receives the position setting value of described station from master system, described PLC calculates the actual value of the current present position of workpiece simultaneously;
Step 4: described PLC, according to this position setting value and actual value, exports corresponding pulse signal to servomotor, servomotor drives workpiece to rotate, until the difference of this position setting value and actual value is less than 0.02mm, has now automatically located.
Wherein, in described step 2, described PLC sends correction instruction to servo-drive system, orders it to drive workpiece to rotate a circle, and when PLC detection workpiece is in initial position, has namely located.
Preferably, in described step 3, described station has 6; And described 6 stations are rounded or oval distribution.
Beneficial effect: the accurate positioning method that the present invention is based on PLC compared with prior art, has following beneficial effect: Binding experiment requires and workpiece feature, and servomotor is set to Pulse Width Control, eliminates the positioning error of workpiece; Positioning precision of the present invention is high, and program implementation algorithm is simple, and control effects is stablized, and fast response time, effectively can improve conventional efficient, reduces regulation time during indexing, increases the economic benefit of operation.
Accompanying drawing explanation
Fig. 1 is the process flow diagram of the accurate positioning method that the present invention is based on PLC.
Embodiment
Below in conjunction with accompanying drawing, technical scheme of the present invention is described further.
As shown in Figure 1, the invention discloses a kind of accurate positioning method based on PLC, described positioning control flow process comprises:
Step 1: positioning starting;
Step 2: origin correction;
Step 3: the position setting value of setting station;
Step 3: described PLC receives the position setting value of described station from master system, described PLC calculates the actual value of the current present position of workpiece simultaneously;
Step 4: described PLC, according to this position setting value and actual value, exports corresponding pulse signal to servomotor, servomotor drives workpiece to rotate, until the difference of this position setting value and actual value is less than 0.02mm, has now automatically located.
In described step 2, described PLC sends correction instruction to servo-drive system, orders it to drive workpiece to rotate a circle, and when PLC detection workpiece is in initial position, has namely located.
In described step 3, described station has 6; And described 6 stations are rounded or oval distribution.
Embodiment 1
When a positioning is initiated, first PLC sends origin correction instruction in the present invention, drives servomotor to drive workpiece to rotate a circle, and when initial position got back to by PLC detection workpiece, has namely corrected.Have 6 stations in the present invention, and these 6 stations are to distribute clockwise, the position setting value of 6 stations is respectively K
1, K
2, K
3, K
4, K
5, K
6.
When workpiece is in 1 place, position, namely the actual value of workpiece is K
1, PLC is K from the station position setting value that master system receives
2, then the corresponding pulses signal that PLC exports is 1 × 1280 positive pulse; PLC is K from the station position setting value that master system receives
3, then the corresponding pulses signal that PLC exports is 2 × 1280 positive pulses; PLC is K from the station position setting value that master system receives
4, then the corresponding pulses signal that PLC exports is 3 × 1280 positive pulses or 3 × 1280 negative pulses; PLC is K from the station position setting value that master system receives
5, then the corresponding pulses signal that PLC exports is 2 × 1280 negative pulses; PLC is K from the station position setting value that master system receives
6, then the corresponding pulses signal that PLC exports is 1 × 1280 negative pulse.
When workpiece is in 2 place, position, namely the actual value of workpiece is K
2, PLC is K from the station position setting value that master system receives
1, then the corresponding pulses signal that PLC exports is 1 × 1280 negative pulse; PLC is K from the station position setting value that master system receives
3, then the corresponding pulses signal that PLC exports is 1 × 1280 positive pulse; PLC is K from the station position setting value that master system receives
4, then the corresponding pulses signal that PLC exports is 2 × 1280 positive pulses; PLC is K from the station position setting value that master system receives
5, then the corresponding pulses signal that PLC exports is 3 × 1280 positive pulses or 3 × 1280 negative pulses; PLC is K from the station position setting value that master system receives
2, then the corresponding pulses signal that PLC exports is 2 × 1280 negative pulses.
When workpiece is in 3 place, position, namely the actual value of workpiece is K
3, PLC is K from the station position setting value that master system receives
1, then the corresponding pulses signal that PLC exports is 2 × 1280 negative pulses; PLC is K from the station position setting value that master system receives
2, then the corresponding pulses signal that PLC exports is 1 × 1280 negative pulse; PLC is K from the station position setting value that master system receives
4, then the corresponding pulses signal that PLC exports is 1 × 1280 positive pulse; PLC is K from the station position setting value that master system receives
5, then the corresponding pulses signal that PLC exports is 2 × 1280 positive pulses; PLC is K from the station position setting value that master system receives
6, then the corresponding pulses signal that PLC exports is 3 × 1280 positive pulses or 3 × 1280 negative pulses.
When workpiece is in 4 place, position, namely the actual value of workpiece is K
4, PLC is K from the station position setting value that master system receives
1, then the corresponding pulses signal that PLC exports is 3 × 1280 positive pulses or 3 × 1280 negative pulses; PLC is K from the station position setting value that master system receives
2, then the corresponding pulses signal that PLC exports is 2 × 1280 negative pulses; PLC is K from the station position setting value that master system receives
3, then the corresponding pulses signal that PLC exports is 1 × 1280 negative pulse; PLC is K from the station position setting value that master system receives
5, then the corresponding pulses signal that PLC exports is 1 × 1280 positive pulse; PLC is K from the station position setting value that master system receives
6, then the corresponding pulses signal that PLC exports is 2 × 1280 positive pulses.
When workpiece is in 5 place, position, namely the actual value of workpiece is K
5, PLC is K from the station position setting value that master system receives
1, then the corresponding pulses signal that PLC exports is 2 × 1280 positive pulses; PLC is K from the station position setting value that master system receives
2, then the corresponding pulses signal that PLC exports is 3 × 1280 positive pulses or 3 × 1280 negative pulses; PLC is K from the station position setting value that master system receives
3, then the corresponding pulses signal that PLC exports is 2 × 1280 negative pulses; PLC is K from the station position setting value that master system receives
4, then the corresponding pulses signal that PLC exports is 1 × 1280 negative pulse; PLC is K from the station position setting value that master system receives
6, then the corresponding pulses signal that PLC exports is 1 × 1280 positive pulse.
When workpiece is in 6 place, position, namely the actual value of workpiece is K
6, PLC is K from the station position setting value that master system receives
1, then the corresponding pulses signal that PLC exports is 1 × 1280 positive pulse; PLC is K from the station position setting value that master system receives
2, then the corresponding pulses signal that PLC exports is 2 × 1280 positive pulses; PLC is K from the station position setting value that master system receives
3, then the corresponding pulses signal that PLC exports is 3 × 1280 positive pulses or 3 × 1280 negative pulses; PLC is K from the station position setting value that master system receives
4, then the corresponding pulses signal that PLC exports is 2 × 1280 negative pulses; PLC is K from the station position setting value that master system receives
5, then the corresponding pulses signal that PLC exports is 1 × 1280 negative pulse.
When servomotor receives positive pulse, namely drive workpiece to rotate clockwise, when servomotor receives negative pulse, namely drive workpiece to rotate counterclockwise; Servomotor drives workpiece to rotate, until the difference of this position setting value and actual value is less than 0.02mm, has now automatically located.
Claims (4)
1. based on an accurate positioning method for PLC, it is characterized in that, described positioning control flow process comprises:
Step 1: positioning starting;
Step 2: origin correction;
Step 3: the position setting value of setting station;
Step 3: described PLC receives the position setting value of described station from master system, described PLC calculates the actual value of the current present position of workpiece simultaneously;
Step 4: described PLC, according to this position setting value and actual value, exports corresponding pulse signal to servomotor, servomotor drives workpiece to rotate, until the difference of this position setting value and actual value is less than 0.02mm, has now automatically located.
2. the accurate positioning method based on PLC according to claim 1, it is characterized in that: in described step 2, described PLC sends correction instruction to servo-drive system, orders it to drive workpiece to rotate a circle, when PLC detection workpiece is in initial position, namely locate.
3. the accurate positioning method based on PLC according to claim 1, is characterized in that: in described step 3, described station has 6 stations.
4. the accurate positioning method based on PLC according to claim 3, is characterized in that: in described step 3, the rounded or oval distribution of described 6 stations.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510799906.9A CN105334796A (en) | 2015-11-19 | 2015-11-19 | Accurate positioning method based on PLC controller |
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|---|---|---|---|
| CN201510799906.9A CN105334796A (en) | 2015-11-19 | 2015-11-19 | Accurate positioning method based on PLC controller |
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| CN105334796A true CN105334796A (en) | 2016-02-17 |
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| CN201510799906.9A Pending CN105334796A (en) | 2015-11-19 | 2015-11-19 | Accurate positioning method based on PLC controller |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113146926A (en) * | 2021-03-31 | 2021-07-23 | 巨宝馨机械(苏州)有限公司 | Intelligent correction method for die gap of foam plastic forming machine |
| CN114801021A (en) * | 2022-04-24 | 2022-07-29 | 巨宝馨机械(苏州)有限公司 | Intelligent correction system and method for mold closing time of foam molding machine |
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|---|---|---|---|---|
| KR100505046B1 (en) * | 1998-07-24 | 2005-11-01 | 엘에스산전 주식회사 | How to improve the performance of PL using positioning module |
| CN200950316Y (en) * | 2006-08-02 | 2007-09-19 | 无锡职业技术学院 | Work teaching aid using man-machine interface and PLC control |
| CN201025507Y (en) * | 2007-02-13 | 2008-02-20 | 上海威士机械有限公司 | A rotary positioning structure for rotary tray adhesion machine |
| CN101244574A (en) * | 2007-02-13 | 2008-08-20 | 上海威士机械有限公司 | Rotation positioning method for turntable type fusing machine and mechanism thereof |
| CN101879779A (en) * | 2010-07-15 | 2010-11-10 | 柳州市精业机器有限公司 | High-accuracy rotation locating control device of double-station plastic injecting and blowing hollow molding machine |
| CN102814816A (en) * | 2012-08-31 | 2012-12-12 | 深圳市华成工业控制有限公司 | Accurate original point finding method of manipulator |
| CN103472855A (en) * | 2013-09-16 | 2013-12-25 | 苏州凯欧机械科技有限公司 | Novel three-position rotating workbench with PLC |
-
2015
- 2015-11-19 CN CN201510799906.9A patent/CN105334796A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100505046B1 (en) * | 1998-07-24 | 2005-11-01 | 엘에스산전 주식회사 | How to improve the performance of PL using positioning module |
| CN200950316Y (en) * | 2006-08-02 | 2007-09-19 | 无锡职业技术学院 | Work teaching aid using man-machine interface and PLC control |
| CN201025507Y (en) * | 2007-02-13 | 2008-02-20 | 上海威士机械有限公司 | A rotary positioning structure for rotary tray adhesion machine |
| CN101244574A (en) * | 2007-02-13 | 2008-08-20 | 上海威士机械有限公司 | Rotation positioning method for turntable type fusing machine and mechanism thereof |
| CN101879779A (en) * | 2010-07-15 | 2010-11-10 | 柳州市精业机器有限公司 | High-accuracy rotation locating control device of double-station plastic injecting and blowing hollow molding machine |
| CN102814816A (en) * | 2012-08-31 | 2012-12-12 | 深圳市华成工业控制有限公司 | Accurate original point finding method of manipulator |
| CN103472855A (en) * | 2013-09-16 | 2013-12-25 | 苏州凯欧机械科技有限公司 | Novel three-position rotating workbench with PLC |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113146926A (en) * | 2021-03-31 | 2021-07-23 | 巨宝馨机械(苏州)有限公司 | Intelligent correction method for die gap of foam plastic forming machine |
| CN115157537A (en) * | 2021-03-31 | 2022-10-11 | 巨宝馨机械(苏州)有限公司 | Intelligent correction method for die gap of foam plastic forming machine |
| CN114801021A (en) * | 2022-04-24 | 2022-07-29 | 巨宝馨机械(苏州)有限公司 | Intelligent correction system and method for mold closing time of foam molding machine |
| CN114801021B (en) * | 2022-04-24 | 2024-02-02 | 巨宝馨机械(苏州)有限公司 | Intelligent correction system and method for mold closing time of foam molding machine |
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Application publication date: 20160217 |
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