CN110673545B - Control method, system and medium of sample platform for neutron spectrometer - Google Patents
Control method, system and medium of sample platform for neutron spectrometer Download PDFInfo
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- CN110673545B CN110673545B CN201910724978.5A CN201910724978A CN110673545B CN 110673545 B CN110673545 B CN 110673545B CN 201910724978 A CN201910724978 A CN 201910724978A CN 110673545 B CN110673545 B CN 110673545B
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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
- G05B19/4142—Structure of the control system, e.g. common controller or multiprocessor systems, interface to servo, programmable interface controller characterised by the use of a microprocessor
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/25—Measuring force or stress, in general using wave or particle radiation, e.g. X-rays, microwaves, neutrons
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/0047—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes measuring forces due to residual stresses
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T3/00—Measuring neutron radiation
- G01T3/001—Spectrometry
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T7/00—Details of radiation-measuring instruments
- G01T7/08—Means for conveying samples received
- G01T7/10—Means for conveying samples received using turntables
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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
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Abstract
The invention relates to the field of computer automation control, and discloses a method, a system and a medium for controlling a sample platform for a neutron spectrometer, so as to realize the automatic test of the neutron spectrometer, wherein the method comprises the following steps: defining a motion axis of a sample to be detected, and constructing a control module for controlling the sample to be detected to move according to a set motion path according to the motion path of the sample to be detected on the motion axis; selecting a control strategy of the control module as a single-axis control strategy or a double-axis control strategy according to a set rule; setting a format of a control script adopted by a control module, and generating a motion control script according to the set format of the control script and a selected control strategy, wherein the motion control script comprises test planning motion path information of a sample to be tested; and controlling the sample to be detected to move according to the motion control script.
Description
Technical Field
The invention relates to the field of computer automation control, in particular to a method, a system and a medium for controlling a sample stage for a neutron spectrometer.
Background
The neutron residual stress spectrometer (neutron spectrometer) is mainly used for stress measurement of materials in material science research and engineering application. According to the traditional test method, a neutron spectrometer system controls the sample stage to operate only by manually filling motion parameters, corresponding buttons are clicked to send motion instructions or parameters to a lower computer, the lower computer sends the motion parameters to a controller, the controller controls a motor to rotate, and the motor drives the sample stage to operate. When a sample is used for testing the stress of a certain point, the point to be tested can be moved to a target position by moving the axis of the sample table X, Y, Z and the rotating shaft in sequence, the traditional method is time-consuming and labor-consuming, the testing efficiency is low, and a user needs to participate in the whole experimental process. By referring to foreign similar systems and requirement research, the neutron spectrometer system needs to meet the requirements of all-weather, uninterrupted and automatic testing after being put into use.
Therefore, how to realize the automatic test of the neutron spectrometer becomes an urgent problem to be solved.
Disclosure of Invention
The invention aims to provide a method, a system and a medium for controlling a sample stage for a neutron spectrometer, so as to realize the automatic test of the neutron spectrometer.
In order to achieve the purpose, the invention provides a method for controlling a sample stage for a neutron spectrometer, which comprises the following steps:
s1: defining a motion axis of a sample to be detected, and constructing a control module for controlling the sample to be detected to move according to a set motion path according to the motion path of the sample to be detected on the motion axis;
s2: selecting a control strategy of the control module as a single-axis control strategy or a double-axis control strategy according to a set rule;
s3: setting a format of a control script adopted by the control module, and generating a motion control script according to the set format of the control script and the control strategy selected in the step S2, wherein the motion control script comprises test planning motion path information of a sample to be tested;
s5: and the control module controls the sample to be tested to move according to the motion control script.
Preferably, the control method further comprises the steps of:
s4: and checking the motion control script.
Preferably, in S3, the motion control script is generated by one of generating a control script through a script editing interface or manually writing the generated control script.
Preferably, when the motion control script is generated in the script editing interface, the verifying in S4 specifically includes the following steps:
checking whether the input equipment parameter type is one of integer or floating point number, and giving an error type prompt to the unreasonable equipment parameter type;
when the mode of generating the motion control script is manual writing of the generated control script, the verification in S4 specifically includes the following steps:
and carrying out fault tolerance check on the script, and giving an accurate prompt to the error script, wherein the content of the fault tolerance check comprises any one or a combination of several of script formats, lexical methods, grammars, semantics and parameter ranges.
Preferably, the set rule is to start the movement from a position closest to the origin.
Preferably, the control script comprises three parts of a motion instruction, a motion object and a motion parameter.
Preferably, the motion axes include X, Y, Z and a rotation axis, the X axis is a horizontal X axis direction of the sample stage, the Y axis is a direction in which the horizontal plane is perpendicular to the X axis, the Z axis is a direction in which the space is perpendicular to the X axis and the Y axis, and the rotation axis is a rotation axis of 360 °.
As a general technical concept, the present invention also provides a sample control system for a neutron spectrometer, comprising:
the device comprises a first unit, a second unit and a third unit, wherein the first unit is used for defining a motion axis of a sample to be detected and constructing a control module for controlling the sample to be detected to move according to a set motion path according to the motion path of the sample to be detected on the motion axis;
the second unit is used for selecting the control strategy of the control module as a single-axis control strategy or a double-axis control strategy according to a set rule;
a third unit, configured to set a format of a control script used by the control module, and generate a motion control script according to the set format of the control script and a control policy, where the motion control script includes test planning motion path information of a sample to be tested;
and the fourth unit is used for controlling the control module to control the sample to be tested to move according to the motion control script.
As a general technical concept, the present invention also provides a computer-readable storage medium having stored thereon a computer program, which when executed by a processor, performs the steps of the above-described method.
The invention has the following beneficial effects:
the invention provides a control method, a system and a medium for a sample platform for a neutron spectrometer, wherein the sample platform X, Y, Z and a self-transmission shaft are required to be moved successively when a sample is moved to a point to be measured, the point to be measured is moved to a diffraction point, then the neutron number is scanned according to a selected ending mode, the point is tested when the scanning of a detector reaches a threshold value, the sample platform is moved to the next point to be measured according to a given script, and the operation is ended until all scripts are operated, and the requirements of all-weather uninterrupted and automatic testing can be met by controlling the sample platform to operate through the scripts.
The present invention will be described in further detail below with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a flow chart of a method for controlling a sample stage for a neutron spectrometer according to a preferred embodiment of the present invention;
FIG. 2 is a diagram of a manually written generation control script in accordance with a preferred embodiment of the present invention;
FIG. 3 is a schematic diagram of a script editing interface generation control script in accordance with a preferred embodiment of the present invention;
fig. 4 is a schematic diagram of the operation of the sample stage control system according to the preferred embodiment of the present invention when the system is connected to the lower computer.
Detailed Description
The embodiments of the invention will be described in detail below with reference to the drawings, but the invention can be implemented in many different ways as defined and covered by the claims.
Example 1
As shown in fig. 1, the present embodiment provides a method for controlling a sample stage for a neutron spectrometer, including the following steps:
s1: defining a motion axis of a sample to be detected, and constructing a control module for controlling the sample to be detected to move according to a set motion path according to the motion path of the sample to be detected on the motion axis;
s2: selecting a control strategy of the control module as a single-axis control strategy or a double-axis control strategy according to a set rule;
s3: setting a format of a control script adopted by the control module, and generating a motion control script according to the set format of the control script and the control strategy selected in the step S2, wherein the motion control script comprises test planning motion path information of a sample to be tested;
s5: and the control module controls the sample to be detected to move according to the motion control script.
According to the control method of the sample platform for the neutron spectrometer, the script is used for controlling the sample platform to operate, so that the requirements of all-weather, uninterrupted and automatic testing can be met.
Specifically, in this embodiment, the script syntax is defined as ACSL (automation control script language), and the syntax defines various mathematical expressions, control statements, and object operations. The expressions comprise constants, variable expressions, function calls, arithmetic expressions and the like, wherein the constant expressions comprise entity characteristic constants such as SET (indicating that the entity is a sample stage axis), MOVE (indicating that the entity is a robot), SCAN (indicating that the entity is a detector) and the like, and constants of various environmental factors. The command word lexical library of the control script lexical library constructed in this embodiment includes: SET (SET sample stage motion axis), SCAN (detector scanning diffraction neutron). The lexical library of the moving object comprises: xt (stage X axis), Yt (stage Y axis), Zt (stage Z axis), XtYt (stage X, Y axis), XtZt (stage X, Z axis), YtZt (stage Y, Z axis), OMGS (stage self-propagating axis), and Det (detector).
In this embodiment, the single axis control strategy is shown in table 1:
TABLE 1 Single axis control strategy
The dual-axis control strategy is shown in table 2:
TABLE 2 Dual-axis control strategy
In this embodiment, the format and semantics of the control script are shown in table 3:
TABLE 3 control script Format and semantics
As a preferred implementation manner of this embodiment, the control method further includes the steps of:
s4: the motion control script is verified.
As a preferred embodiment of the present embodiment, a rule is set such that the movement is started from a position closest to the origin. Note that the movement from the point closest to the origin (in table 1, (10, 0) is the start coordinate) has the shortest movement path, and the test takes the shortest time, which is consistent with the expected effect.
As a preferred embodiment of the present embodiment, the control script includes three parts, namely a motion instruction, a motion object and a motion parameter.
As a preferred embodiment of this embodiment, the motion axis includes X, Y, Z and a rotation axis.
Further, the format of the control script is first determined, and the control script is composed of three parts, i.e., a motion instruction, a motion object and a motion parameter, as shown in table 3. The motion instruction comprises Move, Scan and Set; the moving objects comprise Xt (sample stage X axis), Yt (sample stage Y axis), Zt (sample stage Z axis), XtYt (sample stage X, Y axis), XtZt (sample stage X, Z axis), YtZt (sample stage Y, Z axis), OMGS (sample stage automatic transmission axis), Det (detector) and Rob (robot); the motion command and the motion object are separated by spaces, and the motion parameters are separated by commas (English input method).
In this embodiment, two script generation methods are provided: the user manually writes as shown in fig. 2 and fills in relevant parameters through the control center of the script editing interface as shown in fig. 3, and generates a batch script through loop control.
And manually writing, creating a text file under any drive letter of the host, writing a control script according to a specified format (only one control script can be written in each line), and storing the file into a file with a suffix name of a script or a txt format.
The method comprises the steps of selecting a control strategy (sequentially selecting motion equipment, a motion mode, a motion axis and an ending mode), filling motion parameters, generating a batch of scripts through a loop structure, displaying the generated scripts in a control script window, enabling a user to delete, move up and down each line of scripts, enabling unreasonable scripts to be deleted, and enabling the up and down movement operation to change the sequence of saved scripts.
And according to different control script generation modes, the adopted fault tolerance measures are different. In the system, when the motion script is generated through the control center of the script editing interface, the input parameters are checked for format and range in the input frame. Therefore, the script generated in the mode has no errors, and an operator can skip the script compiling link to directly start the experiment.
Scripts written manually by the operator must be compiled to begin the experiment. Therefore, the script compiling function is added to the script editing interface and is used for checking errors (motion instructions, motion objects, parameter ranges, parameter numbers, grammars and the like) in the script, if the script motion instructions are wrongly spelled, the system can give accurate error prompts in a popup window mode, and helps an operator to quickly position errors and correct the script. If the script is correct, a prompt that the script is compiled to pass and the experiment can be started is given.
In order to ensure that any point to be measured on the sample can be moved to the position of the diffraction point, the sample table is designed to be movable in four axes. The axis of the sample stage X, Y can move in both the positive and negative directions, and the parameter ranges from-250 mm to 250 mm. The Z axis can only move upwards along the direction vertical to the sample stage, the parameter range is 0-550mm, the sample stage can also rotate for a certain angle around the central axis (Z axis), and the parameter range is 0-360 degrees.
In the process of script fault tolerance checking, firstly, format checking is required to be carried out on input parameters, the parameters can only be integers or floating point numbers, range checking is carried out on the parameters after the parameter format is checked to be correct, the parameters in an input box are obtained and compared with a preset parameter range, if the parameters are larger than the maximum value of the preset parameters, an error prompt is given by a system, the parameters of a current text box are set to be the maximum parameter values, if the parameters are smaller than the minimum value of the preset parameters, the error prompt is given by the system, and the parameters of the current text box are set to be the minimum parameter values.
As shown in fig. 4, the sample stage control system is connected with the lower computer, after power-on and enabling are completed, a control script compiled in advance is opened, then a script running button is clicked, the sample stage control system controls each axis of the sample stage to move to an appointed position in sequence according to the compiled script, when the sample stage moves to a point to be tested, continuous neutrons are printed on the point to be tested, most of the neutrons printed on the point to be tested are diffracted because the neutrons are uncharged and have strong penetration capacity, the test of the point to be tested is completed according to the ending mode selected in the script after the test of the current point is completed, the control system controls the sample stage to move to the next point to be tested according to the script sequence until all scripts run, and no user participation is needed during the period, the system will complete the testing of all points according to the script written by the user in advance.
Example 2
The embodiment provides a sample control system for a neutron spectrometer, including:
the device comprises a first unit, a second unit and a third unit, wherein the first unit is used for defining a motion axis of a sample to be detected and constructing a control module for controlling the sample to be detected to move according to a set motion path according to the motion path of the sample to be detected on the motion axis;
the second unit is used for selecting the control strategy of the control module as a single-axis control strategy or a double-axis control strategy according to a set rule;
the third unit is used for setting the format of the control script adopted by the control module and generating a motion control script according to the set format of the control script and the control strategy, wherein the motion control script comprises the test planning motion path information of the sample to be tested;
and the fourth unit is used for controlling the control module to control the sample to be detected to move according to the motion control script.
Example 3
The present embodiment provides a computer readable storage medium having stored thereon a computer program which, when executed by a processor, performs the steps of the above-described method.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A control method of a sample table for a neutron spectrometer is characterized by comprising the following steps:
s1: defining a motion axis of a sample to be detected, and constructing a plurality of control modules for controlling the sample to be detected to move according to a set motion path according to the motion path of the sample to be detected on the motion axis; each motion path is formed by connecting a plurality of unidirectional linear motion tracks end to end, and each unidirectional linear motion track corresponds to one control module;
s2: selecting a control strategy of the control module as a single-axis control strategy or a double-axis control strategy according to a set rule; the motion axes comprise X, Y, Z and a rotating axis, the X axis is the horizontal X axis direction of the sample stage, the Y axis is the direction of the horizontal plane vertical to the X axis, the Z axis is the direction of the space vertical to the X axis and the Y axis, and the rotating axis is a rotating axis of 360 degrees; the single axis control strategy is accomplished with only X, Y, Z controlled, and any one of the axes of rotation; the two-axis control strategy is completed by controlling X, Y any two axes of the Z axis;
s3: setting the format of the control script adopted by the control module, and arranging the control scripts of the plurality of control modules forming each motion path in sequence according to the control strategy selected in S2 according to the set format of the control script to generate a motion control script comprising test planning motion path information of the sample to be tested;
s5: and the control module controls the sample to be tested to move according to the motion control script.
2. The method of controlling a sample stage for a neutron spectrometer of claim 1, further comprising the steps of:
s4: and checking the motion control script.
3. The method for controlling a sample stage for a neutron spectrometer according to claim 2, wherein in the step S3, the motion control script is generated by one of generating a control script through a script editing interface or manually writing the generated control script.
4. The method for controlling the sample stage for the neutron spectrometer according to claim 3, wherein when the motion control script is generated in a manner of generating the control script for the script editing interface, the verification in S4 specifically comprises the following steps:
checking whether the input equipment parameter type is one of integer or floating point number, and giving an error type prompt to the unreasonable equipment parameter type;
when the mode of generating the motion control script is manual writing of the generated control script, the verification in S4 specifically includes the following steps:
and carrying out fault tolerance check on the script, and giving an accurate prompt to the error script, wherein the content of the fault tolerance check comprises any one or a combination of several of script formats, lexical methods, grammars, semantics and parameter ranges.
5. The method of controlling a sample stage for a neutron spectrometer according to claim 1, wherein the set rule is that the movement is started from a position closest to an origin.
6. The method for controlling a sample stage for a neutron spectrometer according to claim 1, wherein the control script comprises three parts of a motion instruction, a moving object and a motion parameter.
7. A sample control system for a neutron spectrometer, comprising:
the device comprises a first unit, a second unit and a third unit, wherein the first unit is used for defining a motion axis of a sample to be detected, and constructing a plurality of control modules for controlling the sample to be detected to move according to a set motion path according to the motion path of the sample to be detected on the motion axis; each motion path is formed by connecting a plurality of unidirectional linear motion tracks end to end, and each unidirectional linear motion track corresponds to one control module;
the second unit is used for selecting the control strategy of the control module as a single-axis control strategy or a double-axis control strategy according to a set rule; the motion axes comprise X, Y, Z and a rotating axis, the X axis is the horizontal X axis direction of the sample stage, the Y axis is the direction of the horizontal plane vertical to the X axis, the Z axis is the direction of the space vertical to the X axis and the Y axis, and the rotating axis is a rotating axis of 360 degrees; the single axis control strategy is accomplished with only X, Y, Z controlled, and any one of the axes of rotation; the two-axis control strategy is completed by controlling X, Y any two axes of the Z axis;
a third unit, configured to set a format of a control script used by the control module, and arrange the control scripts of the plurality of control modules that constitute each motion path in sequence according to a control policy according to the set format of the control script to generate a motion control script that includes test planning motion path information of a sample to be tested;
and the fourth unit is used for controlling the control module to control the sample to be tested to move according to the motion control script.
8. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the method of any one of the preceding claims 1 to 6.
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