CN114935354A - Calibration method of position type adjusting instrument - Google Patents
Calibration method of position type adjusting instrument Download PDFInfo
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- CN114935354A CN114935354A CN202210210862.1A CN202210210862A CN114935354A CN 114935354 A CN114935354 A CN 114935354A CN 202210210862 A CN202210210862 A CN 202210210862A CN 114935354 A CN114935354 A CN 114935354A
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Abstract
The invention relates to the technical field of instrument calibration, in particular to a calibration method of a position type adjusting instrument, which comprises the following steps: step s1, connecting the position type regulator with a current signal source and a calibrator; step s2, calibrating a sensor in the position-type regulator; step s3, calibrating the connection between the controller and the sensor; step s4, calibrating the controller; and step s5, calibrating the connection between the controller and the actuator for the execution of the determination result output by the controller. The invention has the advantages that the position type regulator is calibrated in the process of delivery or use, the fault of the position type regulator in the use process is avoided, and after the calibration of the instrument is finished, the instrument which meets the standard provides basic guarantee for the accuracy of the regulation process, so that the service life of the position type regulator is prolonged, and the working efficiency of the position type regulator is further improved.
Description
Technical Field
The invention relates to the technical field of instrument calibration, in particular to a calibration method of a position type adjusting instrument.
Background
The position type regulation is also called continuous regulation, and is named because a position type element relay or a contactless switch exists in a system. The position regulation system is a nonlinear system, and a stable and continuous oscillation process occurs in the regulation process (even an unstable oscillation process is dispersed to a stable and continuous oscillation process). The output of the position-controlled system is generally in the form of a relay contact actuation, but also in the form of a contactless electronic switch. The neutral position type adjusting instrument in the prior art has high reliability, low cost and wide application occasions, but the existing neutral position type adjusting instrument has the conditions of low relay contact action response sensitivity and substandard accuracy rate.
Chinese utility model patent publication No. CN2549268 discloses a new flow path integrated regulating valve, especially an automatic regulating valve with granular medium fluid which can be applicable to high viscosity in industries such as petroleum, chemical engineering, metallurgy, electric power, paper making and food, and is characterized in that the regulating valve comprises a valve body 8, a tubular valve core 6, a piston actuating mechanism 5, a valve seat 7, a connecting piece 4, a sealing piece 1, 2 and 3.
Therefore, the new flow path integrated regulating valve has the following problems in the application process: the position type adjusting instrument is not calibrated in the process of leaving a factory or using the instrument, so that the position type adjusting instrument is easy to break down in the using process, after the instrument is used for a period of time, the parameters and the judging path of the position type adjusting instrument can be changed, the judging accuracy of the position type adjusting instrument on the adjusted quantity is reduced, and the service life of the position type adjusting instrument is further shortened.
Disclosure of Invention
Therefore, the invention provides a calibration method of a position type adjusting instrument, which is used for overcoming the problem that the position type adjusting instrument is easy to have faults in the using process in the prior art.
In order to achieve the above object, the present invention provides a calibration method for a position adjustment instrument, wherein the calibration method comprises the following steps:
step s1, connecting the position type regulator with a current signal source, and connecting the calibrator with a corresponding component in the position type regulator;
step s2, connecting a standard emitter to the sensor, calibrating the accuracy and reaction rate of the sensor in the position regulator according to the deviation of the measured value and the actual value output by the position regulator;
step s3, calibrating the connection between the controller and the sensor according to the sum of squares of the difference between the input value of the controller and the output value of the sensor in the position type regulator;
step s4, calibrating the sensitivity and the execution efficiency of the controller according to the comparison result of the judgment result of the controller and the preset judgment result;
and step s5, connecting the position type regulator with a load, and calibrating the comprehensive regulation rate of the position type regulator according to the execution condition of the judgment result output by the controller by the actuator in the position type regulator.
Further, in the step s2, the standard emitter gives a standard measured value B0 of the analog adjusted quantity to be measured to the sensor, the sensor detects the actual measured value B of the adjusted quantity of the standard emitter and displays the measured value B through the display, the calibrator calculates the difference σ between B and B0, sets σ = B-B0, compares | σ | with a preset basic error σ 0 set in the calibrator, judges whether the accuracy of the sensor detecting the adjusted quantity meets the standard according to the comparison result and calibrates the sensor when the standard does not meet the standard;
if the | sigma | ≦ sigma 0, the calibrator judges that the accuracy of the sensor for detecting the adjusted quantity meets the standard;
if sigma 0 ≦ sigma ≦ 3 × sigma 0, the calibrator determines that the accuracy of the sensor detecting the adjusted quantity does not meet the standard and calibrates the output value of the display using sigma, sets the output value B' = B-sigma of the calibrated display, and the calibrator re-determines whether the accuracy of the sensor detecting the adjusted quantity meets the standard after the calibration of the display is completed;
if the value of the sigma is more than 3 multiplied by the sigma 0, the calibrator judges that the accuracy of the sensor for detecting the adjusted quantity seriously does not meet the standard, judges that the sensor fails due to too low precision and warns that the sensor needs to be replaced through a prompting lamp.
Further, when the calibrator determines that the accuracy of the sensor detecting the adjusted quantity meets the standard, the calibrator detects a reaction rate S of the sensor, S is set as a time interval between the display outputting an actual measurement value and a standard transmitter giving a standard measurement value to the sensor, the calibrator determines whether the reaction rate of the sensor detecting and transmitting the adjusted quantity meets the standard according to the detected S and calibrates the reaction rate when determining that the reaction rate does not meet the standard, and the calibrator is provided with a first preset reaction rate S1, a second preset reaction rate S2, a third preset reaction rate S3, a first sensitivity adjustment coefficient α 1 and a second sensitivity adjustment coefficient α 2, wherein S1 < S2 < S3, and α 1 < α 2;
if S is less than or equal to S1, the calibrator determines that the response rate of the sensor for detecting and transmitting the adjusted quantity meets the standard and control is transferred to the step S3;
if S1 is more than S2, the calibrator judges that the response rate of the sensor for detecting and transmitting the regulated quantity does not meet the standard and regulates the characteristic parameter of the sensitive detection element by using alpha 1;
if S2 is greater than S and less than or equal to S3, the calibrator judges that the reaction rate of the sensor for detecting and transmitting the regulated quantity does not meet the standard and uses alpha 2 to regulate the characteristic parameters of the sensitive detection element;
if S is greater than S3, the calibrator judges that the reaction rate of the sensor for detecting and transmitting the regulated quantity does not meet the standard, judges that the sensor fails due to low sensitivity, and warns that the sensor needs to be replaced through the indicator light.
Further, in the step s3, the calibrator controls the reference transmitter to assign a set of reference measurement values B0 'of the simulated quantities to be measured to the sensor, setting B0' (B01, B02, … …, B0n), the calibrator detects an input value set B 'of the controller in the position controller, setting B' (B1, B2, … …, bn), the calibrator corresponds the reference measurement values to the values in the input value set, calculates squares of the differences, respectively, and sums the squares of the differences, setting a difference square sum tau = (b 1-b 01) ^2+ (b 2-b 02) ^2+ … … + (bn-b 0n) ^2, comparing tau with a preset difference square sum critical value tau 0 set in a calibrator, judging whether the transmission precision between a controller and a sensor meets a standard according to a comparison result, and calibrating the transmission precision when the transmission precision does not meet the standard;
if tau is less than or equal to tau 0, the calibrator judges that the transmission precision between the controller and the sensor meets the standard and controls to transfer to the step s 4;
if τ > τ 0, the calibrator determines that the transmission accuracy between the controller and the sensor does not meet the criterion and revises the average of the set of input values B 'using the average of the set of criterion measurement values B0', and the calibrator proceeds to step s4 when the revised sum of squared differences τ ≦ τ 0.
Further, in the step s4, the calibrator inputs a first preset timing curve fB1 and a second preset timing curve fB2 to the controller, where the first preset timing curve fB1 and the second preset timing curve fB2 are curves simulating a change of the adjusted amount with time, the controller determines the adjusted amount of the position regulator according to the change of the adjusted amount in fB1 and fB2 and forms a first determination curve l01 'and a second determination curve l 02', respectively, and the calibrator compares l01 'with the first preset determination curve l01 set in the calibrator and compares l 02' with the second preset determination curve l02 set in the calibrator.
Further, when the calibrator compares l01 with l01 'and l02 with l 02', respectively, the calibrator compares the first determination curve l01 'with the first preset determination curve l01 to calculate a first determination accuracy a1, compares the second determination curve l 02' with the second preset determination curve l02 to calculate a second determination accuracy a2 and calculates a determination accuracy average value a 'of a1 and a2, the calibrator compares a' with a preset accuracy critical value a0 set in the calibrator and determines whether the determination accuracy of the controller meets the standard according to the comparison result and calibrates the determination result of the controller when the determination accuracy of the controller does not meet the standard;
if A' is not less than A0, the calibrator judges that the judgment accuracy of the controller meets the standard;
if A' < A0, the calibrator determines that the determination accuracy of the controller does not meet the criterion and re-optimizes the determination path in the controller using the first predetermined determination curve l01 and the second predetermined determination curve l02 as the criterion.
Further, when the calibrator determines that the determination accuracy of the controller meets the standard, the calibrator compares the first determination curve l01 'with the first preset determination curve l01 to calculate a first determination reaction time t1, compares the second determination curve l 02' with the second preset determination curve l02 to calculate a second determination reaction time t2 and calculates a determination reaction time average value t 'of t1 and t2, and the calibrator compares t' with a preset determination reaction time threshold value t0 set in the calibrator and determines whether the determination reaction time of the controller meets the standard according to the comparison result and calibrates the sensitivity of the controller when the criterion is not met;
if t' is less than or equal to t0, the calibrator judges that the reaction time of the controller meets the standard and the control goes to step t 5;
if t' > t0, the calibrator judges that the judgment response time of the controller does not meet the standard, judges that the controller fails due to low sensitivity and warns that the controller needs to be replaced through a warning lamp.
Further, in the step s5, the position regulator is connected to the load, the calibrator inputs a first preset timing curve fB1 to the controller, the controller controls the actuator to regulate the regulated amount of the load according to the change of the regulated amount in fB1, the sensor detects the regulated amount of the load and forms a regulated amount timing curve lB ', the calibrator is provided with a preset regulated amount timing curve lB, compares lB ' and lB and calculates the lag time Ts of lB ' and lB, the calibrator compares Ts with a preset lag time threshold value Ts0, determines whether the execution efficiency of the actuator meets the standard according to the comparison result, and calibrates the actuator when the execution efficiency does not meet the standard;
if Ts is less than or equal to Ts0, the calibrator judges that the execution efficiency of the actuator meets the standard;
if Ts is larger than Ts0, the calibrator judges that the execution efficiency of the actuator does not meet the standard and judges that the connection between the controller and the actuator is in failure.
Further, when the calibrator determines that the execution efficiency of the actuator meets the standard, the calibrator compares lB 'with lB and calculates the inertia time Tx of lB' and lB, the calibrator compares Tx with a preset inertia time threshold Tx0 set in the calibrator, determines whether the integrated regulation rate of the position regulator meets the standard according to the comparison result, and calibrates the position regulator when the integrated regulation rate does not meet the standard;
if Tx is less than or equal to Tx0, the calibrator judges that the comprehensive regulation rate of the position type regulator meets the standard;
if Tx > Tx0, the calibrator determines that the integrated modulation rate of the position modulator is not within a standard and optimizes the decision path in the controller.
Further, the rate of change of the modulated quantity of fB1 over time is greater than the rate of change of the modulated quantity of fB2 over time.
Compared with the prior art, the invention has the advantages that the alignment type regulator is calibrated in the process of delivery or use, the position type regulator is prevented from being out of order in the use process, instruments which accord with standards provide basic guarantee for the accuracy of the regulation process after the instrument calibration is finished, the parameters and the judgment path of the position type regulator are stabilized after the instruments are used for a period of time, the judgment accuracy of the position type regulator on the regulated quantity is improved, the service life of the position type regulator is prolonged, and the working efficiency of the position type regulator is further improved.
Furthermore, the invention calibrates the sensor in the position regulator according to the deviation of the measured value and the actual value output by the position regulator, not only calibrates the accuracy of the detected regulated quantity of the sensor, but also calibrates the sensitivity degree of the sensor, lays a foundation for the regulation accuracy of the position regulator, further improves the regulation speed of the position regulator, thereby improving the service life of the position regulator and further improving the working efficiency of the position regulator.
Furthermore, the invention gives a group of standard measurement value groups of the simulated adjusted quantity to be measured to the sensor through the standard emitter, and calibrates the connection between the controller and the sensor by using an average value method according to the deviation of the input value of the controller in the position type adjuster and the output value of the sensor, thereby laying a foundation for the adjustment accuracy of the position type adjuster, prolonging the service life of the position type adjuster and further improving the working efficiency of the position type adjuster.
Furthermore, the invention inputs the simulated preset time sequence curve to the controller through the calibrator, calibrates the controller according to the comparison result of the judgment result of the controller and the preset judgment result, calibrates the judgment accuracy of the controller and calibrates the sensitivity degree of the controller, lays a foundation for the regulation accuracy of the position regulator, further improves the regulation speed of the position regulator, thereby improving the service life of the position regulator and further improving the working efficiency of the position regulator.
Furthermore, the invention connects the position type regulator with the load, calibrates the connection between the controller and the actuator according to the execution condition of the actuator in the position type regulator to the judgment result output by the controller, calibrates the execution efficiency of the actuator and calibrates the comprehensive regulation rate of the position type regulator, and further improves the regulation rate of the position type regulator, thereby improving the service life of the position type regulator and further improving the working efficiency of the position type regulator.
Drawings
FIG. 1 is a system flow diagram of a method for calibrating a position adjustment instrument according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a position-type adjustment instrument and a calibrator in accordance with an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a first predetermined timing curve fB1 and a second predetermined timing curve fB2 according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a first determination curve l01 'and a second determination curve l 02' according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a scaled timing curve lB' according to an embodiment of the present invention.
Detailed Description
In order that the objects and advantages of the invention will be more clearly understood, the invention is further described in conjunction with the following examples; it should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and do not limit the scope of the present invention.
It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are only for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Referring to fig. 1 and fig. 2, fig. 1 is a system flow chart of a calibration method of an embodiment of a position-type adjustment instrument according to the present invention, and fig. 2 is a schematic structural diagram of the position-type adjustment instrument and a calibrator according to the present invention; the invention provides a calibration method of a position type adjusting instrument, which comprises the following steps:
step s1, connecting the position type regulator with a current signal source, and connecting the calibrator with a corresponding component in the position type regulator;
step s2, calibrating the sensor in the position regulator according to the deviation between the measured value and the actual value output by the position regulator;
step s3, calibrating the connection between the controller and the sensor according to the deviation between the input value of the controller and the output value of the sensor in the position type regulator;
step s4, calibrating the controller according to the comparison result of the judgment result of the controller and the preset judgment result;
and step s5, connecting the position type regulator with a load, and calibrating the connection between the controller and the actuator according to the execution condition of the actuator in the position type regulator on the judgment result output by the controller.
Particularly, the invention has the advantages that the calibration of the position type regulator is carried out in the factory or use process, the fault of the position type regulator in the use process is avoided, the instrument which meets the standard provides basic guarantee for the accuracy of the regulation process after the calibration of the instrument is finished, the parameters and the judgment path of the position type regulator are stabilized after the instrument is used for a period of time, the judgment accuracy of the position type regulator on the regulated quantity is improved, the service life of the position type regulator is prolonged, and the working efficiency of the position type regulator is further improved.
Specifically, in step s2, a standard transmitter is externally connected to the sensor, and is used for giving a standard measurement value B0 of the simulated adjusted quantity to be measured to the sensor, the sensor detects an actual measurement value B of the adjusted quantity of the standard transmitter and displays the actual measurement value B through a display, the calibrator calculates a difference σ between B and B0, sets σ = B-B0, compares | σ | and σ 0, judges whether the accuracy of the adjusted quantity detected by the sensor meets the standard according to the comparison result, and calibrates the adjusted quantity when the standard does not meet the standard, and the calibrator is provided with a preset basic error σ 0;
if the | sigma | ≦ sigma 0, the calibrator judges that the accuracy of the sensor for detecting the adjusted quantity meets the standard and judges the sensitivity of the sensor according to the sensor reaction rate detected by the calibrator;
if sigma 0 is less than | sigma | ≦ 3 × sigma 0, the calibrator determines that the accuracy of the sensor for detecting the adjusted quantity does not meet the standard and calibrates the output value of the display by using sigma, sets the output value B' = B-sigma of the calibrated display, and the calibrator determines that the accuracy of the sensor for detecting the adjusted quantity meets the standard after the calibration of the display is completed;
if the sigma is larger than 3 multiplied by sigma 0, the calibrator judges that the accuracy of the sensor for detecting the adjusted quantity seriously does not meet the standard, judges that the sensor has a fault caused by too low precision, and warns that the sensor needs to be replaced through a prompting lamp.
Specifically, when the calibrator determines that the accuracy of the sensor detecting the adjusted quantity meets the standard, the calibrator detects the reaction rate S of the sensor, sets S as the time interval between the display outputting the actual measurement value and the standard emitter giving the standard measurement value to the sensor, compares S with S1, S2 and S3 respectively, determines whether the reaction rate of the sensor detecting and transmitting the adjusted quantity meets the standard according to the comparison result, and calibrates the sensor when the adjusted quantity does not meet the standard, and is provided with a first preset reaction rate S1, a second preset reaction rate S2, a third preset reaction rate S3, a first sensitivity adjustment coefficient alpha 1 and a second sensitivity adjustment coefficient alpha 2, wherein S1 < S2 < S3, and alpha 1 < alpha 2;
if S is less than or equal to S1, the calibrator determines that the response rate of the sensor for detecting and transmitting the adjusted quantity meets the standard and the control goes to step S3;
if S1 is more than S2, the calibrator judges that the response rate of the sensor for detecting and transmitting the regulated quantity does not meet the standard and regulates the characteristic parameter of the sensitive detection element by using alpha 1;
if S2 is greater than S and less than or equal to S3, the calibrator judges that the reaction rate of the sensor for detecting and transmitting the regulated quantity does not meet the standard and uses alpha 2 to regulate the characteristic parameters of the sensitive detection element;
if S is more than S3, the calibrator judges that the reaction rate of the sensor for detecting and transmitting the regulated quantity does not meet the standard, judges that the sensor has a fault due to low sensitivity and warns that the sensor needs to be replaced through a warning lamp.
Specifically, when α i is used to adjust the characteristic parameter of the sensitive detection element, i =1, 2 is set, the adjusted characteristic parameter of the sensitive detection element is denoted as P ', and P' = P × α i is set, where P is an initial value of the characteristic parameter of the sensitive detection element, the characteristic parameter of the sensitive detection element in the present embodiment varies according to the type of the sensor, and the adjustment method of the characteristic parameter of the sensitive detection element using α i in the present embodiment is not limited to the above method, and includes other methods such as replacement, basic operation, and relational operation.
Specifically, the sensor in the position regulator is calibrated according to the deviation of the measured value and the actual value output by the position regulator, the accuracy of the detected regulated quantity of the sensor is not calibrated, and the sensitivity of the sensor is also calibrated, so that a foundation is laid for the regulation accuracy of the position regulator, the regulation rate of the position regulator is further improved, the service life of the position regulator is prolonged, and the working efficiency of the position regulator is further improved.
Specifically, in step s3, the calibrator controls the standard transmitter to assign a set of standard measurement value groups B0 'of the analog manipulated variable to be measured to the sensor, sets B0' (B01, B02, … …, B0n), the calibrator detects an input value group B 'of the controller in the level adjuster, sets B' (B1, B2, … …, bn), the calibrator corresponds the standard measurement value groups to the values in the input value groups, calculates squares of the differences, respectively, and sums the squares of the differences, setting a difference sum of squares tau = (b 1-b 01) ^2+ (b 2-b 02) ^2+ … … + (bn-b 0n) ^2, comparing tau and tau 0 by a calibrator, judging whether the transmission precision between a controller and a sensor meets the standard according to the comparison result, and calibrating the sensor when the transmission precision does not meet the standard, wherein a preset difference sum of squares critical value tau 0 is arranged in the calibrator;
if τ is less than or equal to τ 0, the calibrator determines that the transmission precision between the controller and the sensor meets the standard and controls to go to step s 4;
if τ > τ 0, the calibrator determines that the transmission accuracy between the controller and the sensor does not meet the criterion and modifies the average of the set of input values B 'using the average of the set of standard measurement values B0', and control passes to step s4 when the sum of squared differences τ ≦ τ 0 after modification.
Specifically, the standard emitter gives a group of standard measurement value groups of the to-be-measured simulated adjusted quantity to the sensor, and the connection between the controller and the sensor is calibrated by using an average value method according to the deviation of the input value of the controller in the position type adjuster and the output value of the sensor, so that a foundation is laid for the adjustment accuracy of the position type adjuster, the service life of the position type adjuster is prolonged, and the working efficiency of the position type adjuster is further improved.
Specifically, please refer to fig. 3 and 4, in which fig. 3 is a schematic structural diagram of a first predetermined timing curve fB1 and a second predetermined timing curve fB2 according to an embodiment of the present invention, and fig. 4 is a schematic structural diagram of a first determination curve l01 'and a second determination curve l 02' according to an embodiment of the present invention. In the step s4, the calibrator inputs a first preset timing curve fB1 and a second preset timing curve fB2 to the controller, where the first preset timing curve fB1 and the second preset timing curve fB2 are curves simulating a change of the adjusted amount with time, a change rate of the adjusted amount with time of fB1 is greater than fB2, the controller determines the adjusted amount of the position regulator according to the change of the adjusted amount in fB1 and fB2 and forms a first determination curve l01 'and a second determination curve l 02' respectively, and the calibrator is provided with a first preset determination curve l01 and a second preset determination curve l02 and compares l01 'with l01 and l 02' with l02 respectively.
Specifically, when the calibrator compares l01 with l01 'and l02 with l 02', respectively, the calibrator compares the first determination curve l01 'with the first preset determination curve l01 to calculate a first determination accuracy a1, compares the second determination curve l 02' with the second preset determination curve l02 to calculate a second determination accuracy a2 and calculates a determination accuracy average value a 'of a1 and a2, the calibrator compares a' with a0 and determines whether the determination accuracy of the controller meets the standard according to the comparison result and calibrates the determination result of the controller when the standard is not met, and a preset accuracy threshold value a0 is set in the calibrator;
if A' is more than or equal to A0, the calibrator judges that the judgment accuracy of the controller meets the standard and judges the sensitivity of the controller according to the response rate of the controller detected by the calibrator;
if A' < A0, the calibrator determines that the determination accuracy of the controller does not meet the criterion and re-optimizes the determination path in the controller using the first predetermined determination curve l01 and the second predetermined determination curve l02 as the criterion.
Specifically, when the calibrator determines that the determination accuracy of the controller meets the standard, the calibrator compares a first determination curve l01 'with a first preset determination curve l01 to calculate a first determination reaction time t1, compares a second determination curve l 02' with a second preset determination curve l02 to calculate a second determination reaction time t2 and calculate a determination reaction time average value t 'of t1 and t2, compares t' with t0, determines whether the determination reaction time of the controller meets the standard according to the comparison result and calibrates the sensitivity of the controller when the determination reaction time of the controller does not meet the standard, and a preset determination reaction time critical value t0 is arranged in the calibrator;
if t' is less than or equal to t0, the calibrator determines that the determined reaction time of the controller meets the criterion and control passes to step t 5;
if t' > t0, the calibrator determines that the response time of the controller does not meet the standard, determines that the controller fails due to low sensitivity, and warns that the controller needs to be replaced through a warning lamp.
Specifically, the simulated preset time sequence curve is input to the controller through the calibrator, the controller is calibrated according to the comparison result of the judgment result of the controller and the preset judgment result, the judgment accuracy of the controller is calibrated, and the sensitivity of the controller is calibrated, so that a foundation is laid for the adjustment accuracy of the position regulator, the adjustment speed of the position regulator is further improved, the service life of the position regulator is prolonged, and the working efficiency of the position regulator is further improved.
Specifically, please refer to fig. 5, which is a schematic structural diagram of a regulated amount timing curve lB 'according to an embodiment of the present invention, in the step s5, the position type regulator is connected to the load, the calibrator inputs a first preset timing curve fB1 to the controller, the controller controls the actuator to regulate the regulated amount of the load according to a change of the regulated amount in fB1, the sensor detects the regulated amount of the load and forms a regulated amount timing curve lB', the calibrator is provided with the preset regulated amount timing curve lB, compares lB 'and lB and calculates a delay time Ts between lB' and lB, the calibrator compares Ts and Ts0, determines whether the execution efficiency of the actuator meets a standard according to a comparison result, and calibrates the actuator when the execution efficiency does not meet the standard, and the calibrator is provided with a preset delay time threshold value Ts 0;
if Ts is less than or equal to Ts0, the calibrator judges that the execution efficiency of the actuator meets the standard and judges the comprehensive regulation rate of the position regulator according to the inertia time detected by the calibrator;
if Ts is larger than Ts0, the calibrator judges that the execution efficiency of the actuator does not meet the standard and judges that the connection between the controller and the actuator is in failure;
specifically, when the calibrator determines that the execution efficiency of the actuator meets the standard, the calibrator compares lB 'with lB and calculates inertia time Tx of the lB' with the lB, the calibrator compares Tx with Tx0, determines whether the comprehensive regulation rate of the position regulator meets the standard according to the comparison result and calibrates the position regulator when the standard is not met, and a preset inertia time critical value Tx0 is arranged in the calibrator;
if Tx is less than or equal to Tx0, the calibrator judges that the comprehensive regulation rate of the position type regulator meets the standard;
if Tx > Tx0, the calibrator determines that the integrated modulation rate of the position modulator does not meet the criteria and optimizes the decision path in the controller.
Specifically, the bit type regulator is connected with a load, the connection between the controller and the actuator is calibrated according to the execution condition of the actuator in the bit type regulator on the judgment result output by the controller, the execution efficiency of the actuator is not calibrated, and the comprehensive regulation rate of the bit type regulator is also calibrated, so that the regulation rate of the bit type regulator is improved, the service life of the bit type regulator is prolonged, and the working efficiency of the bit type regulator is further improved.
So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is apparent to those skilled in the art that the scope of the present invention is not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.
Claims (10)
1. A calibration method of a position type adjusting instrument is characterized by comprising the following steps:
step s1, connecting the position type regulator with a current signal source, and connecting the calibrator with a corresponding component in the position type regulator;
step s2, connecting a standard emitter to the sensor, calibrating the accuracy and reaction rate of the sensor in the position regulator according to the deviation of the measured value and the actual value output by the position regulator;
step s3, calibrating the connection between the controller and the sensor according to the square sum of the difference between the input value of the controller and the output value of the sensor in the potential type regulator;
step s4, calibrating the sensitivity and the execution efficiency of the controller according to the comparison result of the judgment result of the controller and the preset judgment result;
and step s5, connecting the position type regulator with a load, and calibrating the comprehensive regulation rate of the position type regulator according to the execution condition of the judgment result output by the controller by the actuator in the position type regulator.
2. The method of calibrating a position-adjusting instrument according to claim 1, wherein in step s2, the standard transmitter gives a standard measurement value B0 of the analog quantity to be adjusted to be measured to the sensor, the sensor detects the actual measurement value B of the adjusted quantity of the standard transmitter and displays it on the display, the calibrator calculates the difference σ between B and B0, sets σ = B-B0, the calibrator compares | σ | with a preset basic error σ 0 set in the calibrator, determines whether the accuracy of the sensor detecting the adjusted quantity meets the standard according to the comparison result, and calibrates it if the standard does not meet the standard;
if the | sigma | ≦ sigma 0, the calibrator judges that the accuracy of the sensor for detecting the adjusted quantity meets the standard;
if sigma 0 ≦ sigma ≦ 3 × sigma 0, the calibrator determines that the accuracy of the sensor detecting the adjusted quantity does not meet the standard and calibrates the output value of the display using sigma, sets the output value B' = B-sigma of the calibrated display, and the calibrator re-determines whether the accuracy of the sensor detecting the adjusted quantity meets the standard after the calibration of the display is completed;
if the value of the sigma is more than 3 multiplied by the sigma 0, the calibrator judges that the accuracy of the sensor for detecting the adjusted quantity seriously does not meet the standard, judges that the sensor fails due to too low precision and warns that the sensor needs to be replaced through a prompting lamp.
3. The method as claimed in claim 2, wherein when the calibrator determines that the accuracy of the sensor detecting the modulated quantity meets the standard, the calibrator detects a reaction rate S of the sensor, sets S as a time interval between the display outputting an actual measurement value and a standard transmitter giving a standard measurement value to the sensor, determines whether the reaction rate of the sensor detecting and transmitting the modulated quantity meets the standard according to the detected S, and calibrates the reaction rate when determining that the reaction rate does not meet the standard, and the calibrator has a first preset reaction rate S1, a second preset reaction rate S2, a third preset reaction rate S3, a first sensitivity adjustment coefficient α 1, and a second sensitivity adjustment coefficient α 2, where S1 < S2 < S3, and α 1 < α 2;
if S is less than or equal to S1, the calibrator determines that the response rate of the sensor for detecting and transmitting the adjusted quantity meets the standard and control is transferred to the step S3;
if S1 is greater than S and less than or equal to S2, the calibrator judges that the reaction rate of the sensor for detecting and transmitting the regulated quantity does not meet the standard and uses alpha 1 to regulate the characteristic parameters of the sensitive detection element;
if S2 is more than S3, the calibrator judges that the response rate of the sensor for detecting and transmitting the regulated quantity does not meet the standard and regulates the characteristic parameter of the sensitive detection element by using alpha 2;
if S is greater than S3, the calibrator judges that the reaction rate of the sensor for detecting and transmitting the regulated quantity does not meet the standard, judges that the sensor fails due to low sensitivity, and warns that the sensor needs to be replaced through the indicator light.
4. The calibration method of a bit-adjusting instrument as claimed in claim 1, wherein in the step s3, the calibrator controls the standard transmitter to assign a set of standard measurement value sets B0 'of simulated adjusted amounts to be measured to the sensor, setting B0' (B01, B02, … …, B0n), the calibrator detects the input value sets B 'of the controller in the bit-adjusting instrument, setting B' (B1, B2, … …, bn), the calibrator corresponds the standard measurement value sets to the values in the input value sets, calculates squares of differences respectively, and sums the squares of the differences, sets a sum of squares of the differences τ = (B1-B01) ^2+ (B2-B02) ^2+ … … + (bn-B0 n) ^2, the calibrator compares τ and a preset sum of the squares of the differences τ 0 set in the calibrator, determines whether the transmission accuracy between the controller and the sensor meets the standard and corrects the standard if it does not meet the standard, based on the comparison result Preparing;
if τ is less than or equal to τ 0, the calibrator determines that the transmission precision between the controller and the sensor meets the standard and controls to go to the step s 4;
if τ > τ 0, the calibrator determines that the transmission accuracy between the controller and the sensor does not meet the criterion and modifies the average of the set of input values B 'using the average of the set of standard measurement values B0', and control passes to step s4 when the sum of squared differences τ ≦ τ 0 after modification.
5. The method of calibrating a position-type tuning instrument as claimed in claim 1, wherein in said step s4, said calibrator inputs a first preset timing curve fB1 and a second preset timing curve fB2 to said controller, wherein said first preset timing curve fB1 and said second preset timing curve fB2 are curves simulating the time-dependent changes of the amount to be tuned, and said controller determines the amount to be tuned of said position-type tuning instrument according to the changes of the amount to be tuned in fB1 and fB2 and forms a first decision curve l01 'and a second decision curve l 02', respectively, and said calibrator compares l01 'with a first preset decision curve l01 provided in said calibrator and compares l 02' with a second preset decision curve l02 provided in said calibrator, respectively.
6. The calibration method of a position adjusting instrument as set forth in claim 5, wherein when the calibrator compares l01 with l01 'and l02 with l 02', respectively, the calibrator compares the first determination curve l01 'with the first preset determination curve l01 to calculate a first determination accuracy a1, compares the second determination curve l 02' with the second preset determination curve l02 to calculate a second determination accuracy a2 and calculates a determination accuracy average a 'of a1 and a2, the calibrator compares a' with a preset accuracy threshold value a0 set in the calibrator and determines whether the determination accuracy of the controller meets the standard according to the comparison result and calibrates the determination result of the controller when the determination accuracy standard is not met;
if A' is not less than A0, the calibrator judges that the judgment accuracy of the controller meets the standard;
if A' < A0, the calibrator determines that the controller has a determination accuracy that does not meet the criterion and re-optimizes the determination path in the controller using the first predetermined determination curve l01 and the second predetermined determination curve l02 as the criterion.
7. The calibration method of a position-type tuning instrument as claimed in claim 6, wherein when the calibrator determines that the determination accuracy of the controller meets the standard, the calibrator compares the first determination curve l01 'with a first preset determination curve l01 to calculate a first determination reaction time t1, compares the second determination curve l 02' with a second preset determination curve l02 to calculate a second determination reaction time t2 and calculates a determination reaction time average t 'of t1 and t2, the calibrator compares t' with a preset determination reaction time threshold t0 set in the calibrator and determines whether the determination reaction time of the controller meets the standard according to the comparison result and calibrates the sensitivity of the controller when the standard is not met;
if t' is less than or equal to t0, the calibrator judges that the reaction time of the controller meets the standard and the control goes to step t 5;
if t' > t0, the calibrator judges that the judgment response time of the controller does not meet the standard, judges that the controller fails due to low sensitivity and warns that the controller needs to be replaced through a warning lamp.
8. The method of calibrating a potentiometer according to claim 1, wherein in step s5, the potentiometer is connected to the load, the calibrator inputs a first preset timing curve fB1 to the controller, the controller controls the actuator to adjust the adjusted amount of the load according to the change of the adjusted amount in fB1, the sensor detects the adjusted amount of the load and forms an adjusted amount timing curve lB ', the calibrator has a preset adjusted amount timing curve lB, compares lB ' and lB and calculates a lag time Ts between lB ' and lB, the calibrator compares Ts with a preset lag time threshold 0, determines whether the execution efficiency of the actuator meets a standard according to the comparison result, and calibrates the actuator when the execution efficiency does not meet the standard;
if Ts is less than or equal to Ts0, the calibrator judges that the execution efficiency of the actuator meets the standard;
if Ts is larger than Ts0, the calibrator judges that the execution efficiency of the actuator does not meet the standard and judges that the connection between the controller and the actuator is in failure.
9. The calibration method of a position adjustment instrument according to claim 8, wherein when the calibrator determines that the execution efficiency of the actuator meets the standard, the calibrator compares lB 'and lB and calculates an inertia time Tx of lB' and lB, the calibrator compares Tx with a preset inertia time threshold Tx0 set in the calibrator, determines whether the integrated adjustment rate of the position adjustment instrument meets the standard according to the comparison result, and calibrates the position adjustment instrument when the standard is not met;
if Tx is less than or equal to Tx0, the calibrator judges that the comprehensive regulation rate of the position type regulator meets the standard;
if Tx > Tx0, the calibrator determines that the integrated modulation rate of the position modulator does not meet the criteria and optimizes the decision path in the controller.
10. The method of calibrating a position-regulated instrument according to claim 5, wherein the rate of change of the modulated quantity of fB1 over time is greater than the rate of change of the modulated quantity of fB2 over time.
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