CN106681275B - A kind of prediction forecasting method of nc program section - Google Patents
A kind of prediction forecasting method of nc program section Download PDFInfo
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- CN106681275B CN106681275B CN201510745462.0A CN201510745462A CN106681275B CN 106681275 B CN106681275 B CN 106681275B CN 201510745462 A CN201510745462 A CN 201510745462A CN 106681275 B CN106681275 B CN 106681275B
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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
- G05B19/408—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 characterised by data handling or data format, e.g. reading, buffering or conversion of data
- G05B19/4083—Adapting programme, configuration
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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
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/34—Director, elements to supervisory
- G05B2219/34167—Coarse fine, macro microinterpolation, preprocessor
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Abstract
The present invention is to belong to numerical control program language interpretation field, specifically a kind of prediction forecasting method of nc program section.In order to realize that the prediction of program segment prefetches, explain double interpreter structures that the software module of processing program uses main interpreter and auxiliary interpreter forms, the several program segments of the auxiliary advanced main interpreter of interpreter, preanalysis is carried out to several program segments of prediction, the parameter obtained after preanalysis is write toward memory buffer, uses for main interpreter when explaining present procedure section；The parameter that main interpreter needs down-stream section in analysis present procedure Duan Shiru, can read the parameter of auxiliary interpreter preanalysis from memory buffer, complete the interpretive analysis of present procedure section, generate actual machine tool action instruction.The present invention is on the basis of preferably inheriting original software achievement, and by adding a supplementary explanation device, the prediction for realizing processing program section is prefetched, and the realization for complicated G code function provides a good basis.
Description
Technical field
The present invention relates to the interpretation field of processing program language (G code) in digital control system, specifically a kind of processing
The prediction forecasting method of program segment.
Background technique
In digital control system, the explanation of processing program is usually to read in one section of processing program, so as unit of program segment
Afterwards to the carry out syntax and semantics analysis of this program segment keyword one by one, so that corresponding practical machine tool action order is generated,
Such as straight-line feed, circular arc feeding opens cooling, main shaft forward or reverse.But certain ginsengs of present procedure section are determined sometimes
Number generally requires to carry out Conjoint Analysis, when such as cutter radius compensation, the end of current kinetic section to several subsequent processing program sections
The determination of point coordinate and interference checking need the common parsing to subsequent one or more motor segments；But it is subsequent at this time
Processing program section is read in not yet, is not analyzed, causes the interpretive analysis of present procedure section difficult.Conventional processing method is
The parsing for postponing present procedure section, related command parameter is stored, the dissection process of following program segment is then carried out, until correlation
Condition meets, and command parameter stored above is just carried out reprocessing and forms actual machine tool action order；Such method lacks
Point is to bring complicated coding to the processing of interpreter software data flow to realize.
Summary of the invention
In order to solve the case where interpretive analysis of present procedure section relies on down-stream section, the invention proposes a kind of principal solutions
It releases device and auxiliary interpreter cooperates, the prediction forecasting method of concurrent working, by several journeys of the advanced main interpreter of auxiliary interpreter
Sequence section completes prefetching and working the preanalysis of these prediction program segments for these prediction program segments, by what is obtained after preanalysis
Parameter sends main interpreter to, so that main interpreter when analyzing present procedure section, can obtain completely relying on parameter.
The technical solution adopted by the invention is as follows: a kind of prediction forecasting method of nc program section, including following step
It is rapid:
When the explanation of today's numerical control processing program section relies on down-stream section, several journeys of the auxiliary advanced main interpreter of interpreter
Sequence section generates preanalysis parameter, and main interpreter completes the interpretive analysis of current processing program section with reference to preanalysis parameter, obtains machine
Bed action command is for controlling numerically-controlled machine tool.
Several program segments of the advanced main interpreter of auxiliary interpreter generate preanalysis parameter, and main interpreter refers to preanalysis
Parameter completes the interpretive analysis of current processing program section, obtain machine tool action instruction the following steps are included:
Into double interpreter working methods: main interpreter initializes auxiliary interpreter, auxiliary interpreter since present procedure section,
Several subsequent program segments are prefetched, the preanalysis parameter obtained after preanalysis is write toward core buffer, and main interpreter refers to these
After the preanalysis parameter of down-stream section, to present procedure section interpretive analysis, machine tool action instruction is generated；
Double interpreter concurrent workings: main interpreter reads in next program segment, and auxiliary interpreter also reads in forward next journey
Sequence section, auxiliary interpreter several program segments that always advanced main interpreter is fixed；Auxiliary interpreter first analyzes the program of oneself reading
Section writes obtained preanalysis parameter toward core buffer interactive between the two after preanalysis；Main interpreter is slow with reference to memory
The preanalysis parameter in area is rushed, the interpretive analysis to present procedure section is completed；
When the interpretive analysis of current processing program section does not depend on down-stream section, main interpreter closes auxiliary interpreter, principal solution
Device autonomous working is released, does not analyze current processing program section referring again to preanalysis parameter interpretation.
The main interpreter and the shared data and method of auxiliary interpreter are encapsulated in an interpreter base class, main interpreter
It is derived from auxiliary interpreter from this base class.
Beneficial effects of the present invention and advantage:
1. the present invention can inherit pervious interpreter software achievement completely, and increase little feelings in interpreter calculation amount
Realize that the prediction of processing program section prefetches under condition, the number for program segment of looking forward to the prospect is configurable, relatively more flexible.
2. invention software structure is simple, data flow is clear, it is easy to encode realization.
Detailed description of the invention
Fig. 1 is the class-hierarchy structure gragh of interpreter software；
Fig. 2 is the work structuring figure that prediction prefetches double interpreters when program segment；
Fig. 3 is work flow diagram when assisting interpreter starting；
Syntactic analysis controlling stream graph when Fig. 4 is double interpreter concurrent workings；
Semantic analysis controlling stream graph when Fig. 5 is double interpreter concurrent workings.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawings and embodiments.
Conversion process by single interpreter working method to the double interpreter working methods for prefetching program segment of looking forward to the prospect is as follows:
1) auxiliary interpreter is initialized, auxiliary interpreter prediction prefetches several program segments.
Initialize auxiliary interpreter, replicate the global working condition of main interpreter to supplementary explanation device, then auxiliary interpreter from
The working condition of main interpreter is set out, and the program segment of specified number is prefetched, after preanalysis by obtained preanalysis parameter in
It deposits buffer area and passes to main interpreter, after main interpreter obtains these preanalysis parameters, present instruction could be continued to solve
Analysis is released, machine tool action instruction is generated, completes the processing of current processing program section.
2) major-minor two interpreter concurrent workings.
After the prediction of auxiliary interpreter takes the program segment of specified number in advance, main interpreter according to the supplemental characteristic of preanalysis,
Also the interpretive analysis for completing present procedure section, after generating machine tool action instruction, major-minor two interpreters have been entered simultaneously and concurrently
Working stage.The mobile file pointer of main interpreter reads in a program segment, and auxiliary interpreter also reads in forward a program segment, auxiliary solution
Release the device always fixed several program segments of advanced main interpreter；Auxiliary interpreter first analyzes the program segment of oneself reading, preanalysis (language
Method analysis and semantic analysis) after obtained supplemental characteristic is write toward core buffer interactive between the two, auxiliary interpreter at this time
The analysis of program segment is terminated；Hereafter the parsing work for the present procedure section read in oneself could be unfolded in main interpreter, generate
Actual machine tool action instruction.It is worth noting that, after the analysis of main interpreter present procedure section, also memory buffer
Middle correspondence is deleted when the pre-analysis data of leading portion；Otherwise, it may result in main interpreter in the next program segment of interpretive analysis pair
There is mistake or buffer overflow in the understanding for the parameter that preanalysis obtains.
3) auxiliary interpreter is closed.
When main interpreter does not need pre- reading instruction of looking forward to the prospect, so that it may close auxiliary interpreter.
It should be noted that auxiliary interpreter is that the program segment prefetched to prediction explains analysis, it is practical there is no generating
Machine tool action instruction, these program segments prefetched, main interpreter will also explain analysis again, at this moment just will form reality
Machine tool action instruction.
As shown in Fig. 2, due to the concurrent working of major-minor two interpreters, so that the interpreter module phase in digital control system
Calculation amount increases when for the work of single interpreter, considers further that the processing program section for needing prediction to prefetch down-stream section is limited,
So the case where being not necessarily all major-minor interpreter concurrent working during the entire process of explaining processing program, but work as main interpreter
It was found that at this moment can just initialize when the G code instruction of current dissection process needs down-stream section and open auxiliary interpreter, hereafter
Major-minor two interpreter concurrent workings may turn off auxiliary solution when main interpreter, which no longer needs to look forward to the prospect, prefetches subsequent program segment
Device is released, single interpreter working method is reentered.
Explain that the software module of processing program is divided into two kinds of operating modes of single interpreter and double interpreters, present procedure section
When explanation does not depend on down-stream section, only main interpreter works；It is major-minor when the explanation of present procedure section relies on down-stream section
Two interpreters work at the same time.
Using the RS274/NGC interpreter of open source as source, be discussed in more detail how on the basis of this interpreter structure
It makes one and can look forward to the prospect and prefetch the interpreter software module of program segment.
Using object-oriented programming method, major-minor interpreter is shared and identical data and method are packaged into one
A base class basic_interpreter, such as description interpreter global state _ setup structure, each field of processing program section is described
The block structure of parameter is opened file open (), carry out the read () of syntactic analysis, read_a () ..., read_z (),
And it is other；The correlation technique of semantic analysis is mended if convert_... () function can be claimed as pure virtual function by derived class
It fills.Main interpreter and auxiliary interpreter are packaged into two classes main_interpreter and assistant_ respectively
Interpreter, the two derive to obtain (with reference to attached drawing 1) from basic_interpreter class；But the semantic analysis of the two
Module is very different, and the methods of the semantic analysis convert_... () of former RS274/NGC interpreter can be indiscriminately imitated master
Interpreter, the instruction processing part for needing to prefetch program segment is modified slightly, and the semantic analysis convert_... of auxiliary interpreter
() method and main interpreter are very different, it does not generate actual machine tool action instruction, are rewritten as needed；But it to infuse
It anticipates and arrives, what not all convert_... () method required, when such as cutter radius compensation, pre-read in program segment us
Only need to handle movement instruction, other auxiliary interpreters do not need, so the encoding amount of auxiliary processor is very limited.
The recapitulative realization framework for describing interpretation software module above, below with a specifically example introduction explanation
Software module is prefetched the conversion process and realization of double interpreter working methods of program segment by single interpreter working method to prediction
Method, the starting including auxiliary interpreter, the closing of double interpreter concurrent workings and auxiliary interpreter.
When carrying out cutter radius compensation, subsequent one or multiple motor segments are needed to carry out the calculating of terminal point coordinate and do
Inspection is related to, then opening at first encountered the movement instruction after radius compensation, calls auxiliary interpreter respectively by main interpreter
(assistant_interpreter) init () and open () method initialize auxiliary interpreter and open processing program text
Part, then by the duplication of the global state of main interpreter _ set_up structural body variable it is a to auxiliary interpreter _ set_up variable,
Then several times, prediction is pre- by the read () and execute () method for calling auxiliary interpreter (assistant_interpreter)
Several segments processing program is read, the parameter pre-processed (mainly coordinate) is write into core buffer (with reference to attached by auxiliary interpreter
Fig. 3)；Hereafter control stream can just come back to main interpreter, and main interpreter is completed to open according to the pre-analysis data of auxiliary interpreter
The processing of first motor segment after radius compensation.
Then into double interpreter working conditions, when read () method of main interpreter (main_interpreter) is adjusted
Used time, read () method of auxiliary interpreter is called in the read () of main interpreter, auxiliary interpreter takes forward prior to main interpreter
A processing program section out carries out the syntactic analysis of program segment, and then control flow back into read () method of main interpreter, complete
At the syntactic analysis (referring to attached drawing 4) of the present procedure section of main interpreter.When the side execute () of main_interpreter
When method is called, call execute () method of auxiliary interpreter in the execute () of main interpreter, auxiliary interpreter prior to
Main interpreter completes semantic analysis to program segment, after auxiliary interpreter preanalysis to parameter (mainly coordinate) write toward memory
Buffering, hereafter control flow back into the execute () of main interpreter, completes the semantic analysis (ginseng of the present procedure section of main interpreter
Examine attached drawing 5).
It when exiting radius compensation (G40), is gone to close auxiliary interpreter by main interpreter, entire module work is in single solution at this time
Release device state.
Claims (2)
1. a kind of prediction forecasting method of nc program section, it is characterised in that: use main interpreter and auxiliary interpreter group
At double interpreter structures；Method includes:
When the explanation of today's numerical control processing program section relies on down-stream section, the main interpreter is several in advance for the auxiliary interpreter
A program segment generates preanalysis parameter, and the main interpreter completes the explanation point of current processing program section with reference to preanalysis parameter
Analysis obtains machine tool action instruction for controlling numerically-controlled machine tool；
It mainly comprises the steps that
(1) enter double interpreter working methods: main interpreter initializes auxiliary interpreter, auxiliary interpreter since present procedure section,
Several subsequent program segments are prefetched, the preanalysis parameter obtained after preanalysis is write toward core buffer, and main interpreter refers to these
After the preanalysis parameter of down-stream section, to present procedure section interpretive analysis, machine tool action instruction is generated；
(2) double interpreter concurrent workings: main interpreter reads in next program segment, and auxiliary interpreter also reads in forward next program
Section, auxiliary interpreter several program segments that always advanced main interpreter is fixed；Auxiliary interpreter first analyzes the program segment of oneself reading,
Obtained preanalysis parameter is write toward core buffer interactive between the two after preanalysis；Main interpreter refers to core buffer
In preanalysis parameter, complete to the interpretive analysis of present procedure section；
(3) exit double interpreter working methods: when the interpretive analysis of current processing program section does not depend on down-stream section, principal solution is released
Device closes auxiliary interpreter, and main interpreter works independently, and does not analyze current processing program section referring again to preanalysis parameter interpretation.
2. a kind of prediction forecasting method of nc program section according to claim 1, which is characterized in that the principal solution
The shared data and method for releasing device and auxiliary interpreter are encapsulated in an interpreter base class, main interpreter and auxiliary interpreter from this
Base class derives from.
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| CN107273134B (en) * | 2017-06-23 | 2020-08-07 | 深圳市雷赛控制技术有限公司 | Numerical control program execution method and device |
| CN109669880A (en) * | 2017-10-13 | 2019-04-23 | 展讯通信（上海）有限公司 | A kind of data prefetching method and device, microprocessor |
| JP6838031B2 (en) * | 2018-10-31 | 2021-03-03 | ファナック株式会社 | Numerical control system |
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