CN110995107A - Motor control method and system based on numerical tracking - Google Patents
Motor control method and system based on numerical tracking Download PDFInfo
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- CN110995107A CN110995107A CN201911391847.6A CN201911391847A CN110995107A CN 110995107 A CN110995107 A CN 110995107A CN 201911391847 A CN201911391847 A CN 201911391847A CN 110995107 A CN110995107 A CN 110995107A
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- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000005070 sampling Methods 0.000 claims abstract description 23
- 238000006243 chemical reaction Methods 0.000 claims abstract description 14
- 230000003993 interaction Effects 0.000 claims abstract description 11
- 238000004458 analytical method Methods 0.000 claims abstract description 10
- 238000003860 storage Methods 0.000 claims description 6
- 238000007789 sealing Methods 0.000 abstract description 10
- 238000010438 heat treatment Methods 0.000 description 7
- 239000003990 capacitor Substances 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000010426 asphalt Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 239000012775 heat-sealing material Substances 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- -1 sintered ores Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P23/00—Arrangements or methods for the control of AC motors characterised by a control method other than vector control
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Electric Motors In General (AREA)
Abstract
The invention discloses a motor control method and system based on numerical tracking, belonging to the technical field of control of a heat sealing machine, and comprising the following steps: the sampling module is used for acquiring working parameters of the driving motor; the working parameters comprise working current and/or working voltage; a controller for obtaining the working parameters, comparing and analyzing the working parameters with theoretical parameters, and finely adjusting the working parameters of the driving motor according to the comparison and analysis result; the sampling module performs data interaction with an I/O port of the controller through the first signal conversion module; and the I/O port of the controller performs data interaction with the control part of the driving motor through a second signal conversion module, and the sampling module comprises a voltage transformer and/or a current transformer. According to the invention, the working parameters and the theoretical parameters of the driving motor are compared and analyzed, and then the working state of the driving motor is finely adjusted according to the comparison and analysis result, so that the driving motor works in the theoretical state to the maximum extent, and the working precision of the motor is improved.
Description
Technical Field
The invention belongs to the technical field of control of heat sealing machines, and particularly relates to a motor control method and system based on numerical tracking.
Background
As is known, the product of the heat sealing machine is a full-flow automatic sampling device for loose materials, and is mainly suitable for belt conveying type automatic sampling machines for bulk granular materials such as sintered ores, pellets, mineral powder, coke, coking coal, asphalt and the like. The heat sealing machine has the working principle that the heat of high-frequency heating is generated by acting on an object mainly by means of electromagnetic field changes of tens of thousands of times, hundreds of thousands of times and even hundreds of millions of times per second, and the high-frequency heating can be divided into high-frequency induction heating, high-frequency dielectric heating, high-frequency plasma heating, microwave heating and the like according to different frequency ranges. The high-frequency dielectric heating technology is widely applied to modern industrial production because the equipment applied to plastic packaging is a high-frequency heat sealing machine, namely a welding machine, namely equipment for converting alternating current into direct current and then converting the direct current into alternating current, and finally transmitting the high-frequency power to a load.
At present, in the process of realizing heat sealing of materials by using a heat sealing machine, due to different heat sealing materials, the existing system is completely controlled by manually adjusting a knob, and workers adjust the knob according to different currents generated by different materials during heat sealing so as to keep the currents at a proper position for heat sealing, thereby realizing heat sealing.
Obviously, the precision of the traditional manual auxiliary control is not enough, the requirement of high precision is difficult to meet, and a large amount of manpower is consumed.
Disclosure of Invention
The motor control method and the system based on the numerical tracking compare and analyze the working parameters and the theoretical parameters of the driving motor, and then finely adjust the working state of the driving motor according to the comparison and analysis result, so that the driving motor works in the theoretical state to the maximum extent, and the working precision of the motor is improved.
A first object of the present invention is to provide a motor control system based on numerical tracking, at least comprising:
the sampling module is used for acquiring working parameters of the driving motor; the working parameters comprise working current and/or working voltage;
a controller for obtaining the working parameters, comparing and analyzing the working parameters with theoretical parameters, and finely adjusting the working parameters of the driving motor according to the comparison and analysis result; wherein:
the sampling module performs data interaction with an I/O port of the controller through the first signal conversion module; and the I/O port of the controller performs data interaction with the control part of the driving motor through the second signal conversion module.
Further, the sampling module comprises a voltage transformer and/or a current transformer.
Further, the first signal conversion module is an analog-to-digital converter.
Furthermore, the second signal conversion module is a digital-to-analog converter.
Furthermore, the controller comprises a theoretical parameter storage module, a threshold storage module, a logic operation module and a human-computer interaction module.
A second object of the present invention is to provide a method for a motor control system based on numerical tracking, characterized by comprising at least:
s1, the sampling module acquires working parameters of the driving motor in real time or at regular time and sends the working parameters to the controller;
s2, comparing and analyzing the working parameters and the theoretical parameters by the controller, and finally finely adjusting the working parameters of the driving motor according to the comparison and analysis result; the method specifically comprises the following steps:
when the working parameters are not equal to the theoretical parameters, the controller calculates the difference value, calculates the fine tuning parameters of the driving motor according to the difference value, and finally feeds the fine tuning parameters back to the driving motor;
and S3, adjusting the working parameters by the driving motor according to the fine adjustment parameters, and finally enabling the working parameters to be the same as the theoretical parameters.
Further, in the S1: the working parameters are analog quantity, the sampling module sends the analog quantity to the analog-to-digital converter and then converts the analog quantity into digital signals, and finally the digital signals are sent to the controller.
Further, in the S2: the fine tuning parameter is a digital signal, the controller sends the digital signal to the digital-to-analog converter and then converts the digital signal into an analog signal, and finally the analog signal is sent to the driving motor.
The invention has the advantages and positive effects that:
by adopting the technical scheme, the working parameters of the driving motor are acquired in real time or at regular time, then the working parameters and the theoretical parameters of the driving motor are compared and analyzed, and then the working state of the driving motor is finely adjusted according to the comparison and analysis result, so that the driving motor works in the theoretical state to the maximum extent, and the working precision of the motor is improved.
Drawings
FIG. 1 is a flow chart of a preferred embodiment of the present invention;
Detailed Description
In order to further understand the contents, features and effects of the present invention, the following embodiments are illustrated and described in detail with reference to the accompanying drawings:
referring to fig. 1, a motor control system based on numerical tracking includes:
the sampling module is used for acquiring working parameters of the driving motor; the working parameters comprise working current and/or working voltage; the sampling module selects a current or voltage sensor with a mature technology, and takes out a signal from a driving loop of the motor; for example: voltage signals are directly taken out by adopting a piezoresistor or a voltage sensor, or current signals are taken out by a current transformer and then converted into voltage signals;
the controller is used for acquiring the working parameters, comparing and analyzing the working parameters with theoretical parameters, and finally finely adjusting the working parameters of the driving motor according to comparison and analysis results; the controller can be an industrial personal computer or a singlechip with a programming function; the fine tuning mainly comprises: adjusting the rotation direction, speed and process of the driving motor;
with respect to the driving motor, it is preferable that,
the current variation is as follows: initial value of current: 0.2; setting an initial value of current: i is0(typically 0.3); current setting end value: i isE(ii) a Current reference value: i ═ IE-I0(ii) a Current change value: i (sampled current value);
the adjustable capacitance process quantity is as follows: the whole process is divided into equal parts from 0 to 100; 0- -the point where the capacitor plate is farthest from; 100- - -the closest point of the capacitor plate distance;
current change time control amount: standard time value: 10S(ii) a Power-on time value: t is0(ii) a Current start-up time value: t isS(when the current reaches I0Time); reaching the end value of the current setting: t isE＝10-T0(ii) a Reference time value: t ═ TE-TS(ii) a Time variation value: t ist(time of day time value of sampling);
output point control value: reference point: p is I/T; sampling points: pt＝I/Tt；
The control process comprises the following steps:
when P is presentt-P>When 0, the rotation direction of the motor is controlled, and the adjustable capacitor moves towards the direction of increasing the distance between the polar plates.
When P is presentt-P<And when 0, the rotation direction of the motor is controlled, and the adjustable capacitor moves towards the direction of reducing the distance of the polar plate.
When P is presenttWhen P is 0, the motor is controlled to be fixed, and the adjustable capacitor is kept in place.
Description of the procedure: the set near point value is the reachable value of the capacitor plate, and when the plate moves to the pole, the motor stops rotating to limit the continuous reduction of the plate; the set far point value is an unreachable pole value, and when the pole plate moves to the pole, limit control is added to stop the motor from rotating. And powering off in time to finish the rotation of the motor.
Wherein:
the sampling module performs data interaction with an I/O port of the controller through the first signal conversion module; and the I/O port of the controller performs data interaction with the control part of the driving motor through the second signal conversion module.
Preferably, the sampling module comprises a voltage transformer and/or a current transformer.
The first signal conversion module is an analog-to-digital converter.
The second signal conversion module is a digital-to-analog converter.
The controller comprises a theoretical parameter storage module, a threshold storage module, a logic operation module and a man-machine interaction module.
A method of a motor control system based on numerical tracking, comprising:
s1, the sampling module acquires working parameters of the driving motor in real time or at regular time and sends the working parameters to the controller;
s2, comparing and analyzing the working parameters and the theoretical parameters by the controller, and finally finely adjusting the working parameters of the driving motor according to the comparison and analysis result; the method specifically comprises the following steps:
when the working parameters are not equal to the theoretical parameters, the controller calculates the difference value, calculates the fine tuning parameters of the driving motor according to the difference value, and finally feeds the fine tuning parameters back to the driving motor;
and S3, adjusting the working parameters by the driving motor according to the fine adjustment parameters, and finally enabling the working parameters to be the same as the theoretical parameters.
In the S1: the working parameters are analog quantity, the sampling module sends the analog quantity to the analog-to-digital converter and then converts the analog quantity into digital signals, and finally the digital signals are sent to the controller.
In the S2: the fine tuning parameter is a digital signal, the controller sends the digital signal to the digital-to-analog converter and then converts the digital signal into an analog signal, and finally the analog signal is sent to the driving motor.
The above-mentioned embodiments are only for illustrating the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and to carry out the same, and the present invention shall not be limited to the embodiments, i.e. the equivalent changes or modifications made within the spirit of the present invention shall fall within the scope of the present invention.
Claims (8)
1. A motor control system based on numerical tracking; characterized in that it at least comprises:
the sampling module is used for acquiring working parameters of the driving motor; the working parameters comprise working current and/or working voltage;
a controller for obtaining the working parameters, comparing and analyzing the working parameters with theoretical parameters, and finely adjusting the working parameters of the driving motor according to the comparison and analysis result; wherein:
the sampling module performs data interaction with an I/O port of the controller through the first signal conversion module; and the I/O port of the controller performs data interaction with the control part of the driving motor through the second signal conversion module.
2. The numerical tracking based motor control system according to claim 1, wherein the sampling module includes a voltage transformer and/or a current transformer.
3. The numerical tracking based motor control system according to claim 1 or 2, wherein the first signal conversion module is an analog-to-digital converter.
4. The numerical tracking based motor control system of claim 3, wherein the second signal conversion module is a digital-to-analog converter.
5. The numerical tracking-based motor control system according to claim 3, wherein the controller comprises a theoretical parameter storage module, a threshold storage module, a logical operation module and a human-computer interaction module.
6. A method of a motor control system based on numerical tracking according to claim 1, characterized by comprising at least:
s1, the sampling module acquires working parameters of the driving motor in real time or at regular time and sends the working parameters to the controller;
s2, comparing and analyzing the working parameters and the theoretical parameters by the controller, and finally finely adjusting the working parameters of the driving motor according to the comparison and analysis result; the method specifically comprises the following steps:
when the working parameters are not equal to the theoretical parameters, the controller calculates the difference value, calculates the fine tuning parameters of the driving motor according to the difference value, and finally feeds the fine tuning parameters back to the driving motor;
and S3, adjusting the working parameters by the driving motor according to the fine adjustment parameters, and finally enabling the working parameters to be the same as the theoretical parameters.
7. The method of a motor control system based on numerical tracking of claim 6, wherein in the S1: the working parameters are analog quantity, the sampling module sends the analog quantity to the analog-to-digital converter and then converts the analog quantity into digital signals, and finally the digital signals are sent to the controller.
8. The method of a motor control system based on numerical tracking of claim 6, wherein in the S2: the fine tuning parameter is a digital signal, the controller sends the digital signal to the digital-to-analog converter and then converts the digital signal into an analog signal, and finally the analog signal is sent to the driving motor.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911391847.6A CN110995107B (en) | 2019-12-30 | 2019-12-30 | Motor control method and system based on numerical tracking |
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