CN117784587A - Dead zone control method based on control system, computer equipment and storage medium - Google Patents
Dead zone control method based on control system, computer equipment and storage medium Download PDFInfo
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Abstract
Embodiments of the present disclosure disclose a dead zone control method, a computer device, and a storage medium based on a control system. One embodiment of the method comprises the following steps: in response to determining that communication data is successfully transmitted to a target control system, collecting a current proportional-integral-derivative measurement value of the target control system, and determining an absolute value of deviation between the proportional-integral-derivative measurement value and the target measurement value; suspending proportional-integral-derivative regulation of the target control system in response to determining that the absolute value of the deviation is within the dead zone and exceeds a set time; and in response to determining that the absolute value of the deviation is not within the deadband, activating an output value of the target control system to adjust until the target control system reenters the deadband. According to the embodiment, the measured value is pulled back into the dead zone in a short time, so that the measured value reaches the target value, and frequent oscillation of the system is avoided.
Description
Technical Field
Embodiments of the present disclosure relate to the field of computers, and in particular, to a dead zone control method based on a control system, a computer device, and a storage medium.
Background
PID control is also called proportional integral differential control, is the most classical control algorithm of a control system, can quickly and stably realize target adjustment of controlled quantity, has an application range covering almost all occasions needing to realize steady-state control, is widely applied to automatic control of various equipment and production lines, and is a great invention of human beings. However, there is a problem in the PID system that the measured value is a variable value, and when the measured value is continuously changed, there is a deviation between the measured value and the target value, and the PID system is continuously adjusted to cause frequent and repeated oscillation of the system.
Disclosure of Invention
The disclosure is in part intended to introduce concepts in a simplified form that are further described below in the detailed description. The disclosure is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used to limit the scope of the claimed subject matter.
Some embodiments of the present disclosure propose a dead zone control method, a computer device and a computer-readable storage medium based on a control system to solve the technical problems mentioned in the background section above.
In a first aspect, some embodiments of the present disclosure provide a dead zone control method based on a control system, the method comprising: writing communication data into a communication gateway provided by a target control system to send the communication data to the target control system, wherein the communication address of the communication data comprises the address of a sending end and the address of the target control system; generating communication writing information corresponding to the communication data in response to determining that the communication data is successfully written; generating communication receiving information according to the communication feedback data in response to reading the communication feedback data from the communication gateway; determining whether the communication data is successfully transmitted to the target control system through the communication writing information and the communication receiving information; in response to determining that the communication data is successfully transmitted to the target control system, collecting a current proportional-integral-derivative measurement value of the target control system, and determining an absolute value of a deviation between the proportional-integral-derivative measurement value and the target measurement value; suspending proportional-integral-derivative regulation of the target control system in response to determining that the absolute value of the deviation is within the dead zone and exceeds a set time; and in response to determining that the absolute value of the deviation is not within the deadband, activating an output value of the target control system to adjust until the target control system reenters the deadband.
In a second aspect, the present disclosure also provides a computer device comprising a processor, a memory, and a computer program stored on the memory and executable by the processor, wherein the computer program, when executed by the processor, implements a method as described in any of the implementations of the first aspect.
In a third aspect, the present disclosure also provides a computer readable storage medium having a computer program stored thereon, wherein the computer program, when executed by a processor, implements a method as described in any of the implementations of the first aspect.
The above embodiments of the present disclosure have the following advantageous effects: with the dead zone control method based on the control system of some embodiments of the present disclosure, first, communication data is written to a communication gateway provided by a target control system to be transmitted to the target control system. The communication address of the communication data comprises an address of a transmitting end and an address of a target control system. And then, in response to determining that the communication data is successfully written, generating communication writing information corresponding to the communication data. Then, in response to the communication feedback data read from the communication gateway, generating communication receiving information according to the communication feedback data; and determining whether the communication data is successfully transmitted to the target control system through the communication writing information and the communication receiving information. Thus, the existing communication scheme is improved. The sending end can send the same information to the control system and simultaneously send the same information to the sending end. The communication writing content is processed to obtain communication information, and the communication receiving content is processed to obtain receiving information. The written information and the received information may then be compared in an asynchronous manner. A successful comparison indicates a successful communication. The efficiency and timeliness of confirmation are improved, and the automatic operation capacity and efficiency of the system are also improved. Then, in response to determining that the communication data is successfully transmitted to the target control system, collecting the current proportional-integral-derivative measured value of the target control system, and determining the absolute value of the deviation between the proportional-integral-derivative measured value and the target measured value; in response to determining that the absolute value of the deviation is within the dead zone and exceeds a set time, the proportional-integral-derivative adjustment of the target control system is suspended. Finally, in response to determining that the absolute value of the deviation is not within the deadband, the output value of the target control system is activated to adjust until the target control system reenters the deadband. Therefore, when the system performs PID regulation, if the measured value is stable, the system keeps steady state, the PID regulation is not effective, and if the measured value changes along with the working condition and exceeds the dead zone range, the PID regulation is effective, and the measured value is pulled back into the dead zone in a short time, so that the measured value reaches the target value, and frequent oscillation of the system is avoided.
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The above and other features, advantages, and aspects of embodiments of the present disclosure will become more apparent by reference to the following detailed description when taken in conjunction with the accompanying drawings. The same or similar reference numbers will be used throughout the drawings to refer to the same or like elements. It should be understood that the figures are schematic and that elements and components are not necessarily drawn to scale.
FIG. 1 is a flow chart of some embodiments of a control system based dead zone control method according to the present disclosure;
fig. 2 is a schematic block diagram of a computer device provided in an embodiment of the present disclosure.
Detailed Description
Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While certain embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete. It should be understood that the drawings and embodiments of the present disclosure are for illustration purposes only and are not intended to limit the scope of the present disclosure.
It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings. Embodiments of the present disclosure and features of embodiments may be combined with each other without conflict.
It should be noted that the terms "first," "second," and the like in this disclosure are merely used to distinguish between different devices, modules, or units and are not used to define an order or interdependence of functions performed by the devices, modules, or units.
It should be noted that references to "one", "a plurality" and "a plurality" in this disclosure are intended to be illustrative rather than limiting, and those of ordinary skill in the art will appreciate that "one or more" is intended to be understood as "one or more" unless the context clearly indicates otherwise.
The names of messages or information interacted between the various devices in the embodiments of the present disclosure are for illustrative purposes only and are not intended to limit the scope of such messages or information.
The present disclosure will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
Fig. 1 is a flow chart of some embodiments of a control system based dead zone control method according to the present disclosure. A flow 100 of some embodiments of a control system based dead band control method according to the present disclosure is shown. The dead zone control method based on the control system comprises the following steps:
and step 101, writing communication data into a communication gateway provided by the target control system to send the communication data to the target control system.
In some embodiments, an execution subject (e.g., a transmitting end) of the dead zone control method based on the control system may write communication data to a communication gateway provided by the target control system to transmit to the target control system. The communication address of the communication data comprises an address of a transmitting end and an address of a target control system. The sender may be a computing device, i.e. the execution body described above. The communication gateway is typically a specialized application or platform provided by the target control system that is specialized in transceiving communication data. The communication gateway may be installed on the execution body or may be installed on another device communicatively connected to the execution body. As an example, the executing entity may communicate with the communication gateway through an intranet. And the target control system can communicate with the communication gateway through a communication dedicated line. The target control system may be referred to as a PID control system. For example, the target control system may refer to a PLC controller. For example, when the executing body needs to send an announcement to the target control system, the executing body may write communication data to a communication gateway provided by the target control system through a communication service. The communication services on the execution body and the communication gateway may be connected using a network protocol. For example, the communication service may configure FTP read-write rights to connect to the communication gateway so that communication data can be written under the communication directory specified by the communication gateway. The communication gateway also needs to open the FTP service function, thereby allowing external services to read and write specified communication to write and receive directories. The address of the transmitting end may refer to an IP address. The address of the target control system may refer to the IP address of the control system.
Step 102, in response to determining that the communication data is successfully written, generating communication writing information corresponding to the communication data.
In some embodiments, the executing body may generate the communication writing information corresponding to the communication data in response to determining that the communication data is written successfully. Because the execution body and the communication gateway are connected through the intranet, whether the communication data is successfully written into the communication gateway can be known. For example, the communication data may be converted by a digest algorithm to obtain the communication writing information. The digest algorithm may be an MD5 digest algorithm. That is, the communication data can be converted into digest data by a digest algorithm to obtain communication writing information.
And step 103, in response to the communication feedback data read from the communication gateway, generating communication receiving information according to the communication feedback data.
In some embodiments, the executing entity may generate communication reception information according to the communication feedback data in response to reading the communication feedback data from the communication gateway. The receiving service in the executing body can also read the communication feedback content from the receiving catalogue of the gateway of the classmates at regular time to obtain the communication feedback data. It will be appreciated that the communication content in the communication data is typically the communication feedback content in the communication feedback data of the target control system. For example, the communication feedback data is converted by a summary algorithm to obtain communication receiving information. The digest algorithm may be an MD5 digest algorithm.
Step 104, determining whether the communication data is successfully transmitted to the target control system through the communication writing information and the communication receiving information.
In some embodiments, the executing entity may determine whether the communication data is successfully transmitted to the target control system through the communication writing information and the communication receiving information. The communication write information may be compared with the communication receive information. For example, jaccard similarity coefficients may be employed to determine whether the communication write information matches the communication receive information. If the coefficient is greater than or equal to a preset threshold, the two pieces of information can be indicated to be matched, and the success of sending the receipt data is indicated.
In an actual application scenario, the execution body may determine whether the communication data is successfully transmitted to the target control system by:
first, a time-point of the local database is obtained in response to determining to perform the report status validation task. The initial value of the time-point may be the write time of the communication write information transmitted earliest in the local database. The initial value is typically the first time point after the first stored communication write information, or data reset. When the execution of the transmission state confirmation task is determined, if the set time is reached, the time point of the local database can be acquired.
Second, the alternative communication writing information and the alternative communication receiving information are selected from the local database through the acquired time points. Wherein, the alternative communication writing information is: the writing time is greater than or equal to the time point, and the state is communication writing information of the state to be confirmed, and the alternative communication receiving information is as follows: and the communication receiving information with the receiving time more than or equal to the time position. There is typically a certain time sequence of communicating data and receiving data. And the reception time of the received data will typically be later than the writing time of the communication data.
Thirdly, the alternative communication writing information is matched with the alternative communication receiving information, and a matching result is obtained.
Fourth, according to the matching result, the state of the alternative communication writing information is switched. First, in response to determining that the matching result indicates that the matching is successful, the state of the alternative communication write information is switched to a confirmation success state. Then, in response to determining that the matching result indicates that the matching fails, and the task execution duration reaches a set duration, the state of the alternative communication written information is switched to a confirmation failure state.
For example, if it is determined that the matching fails and the task execution duration does not reach the set duration, no processing may be performed. If the matching is determined to be failed and the task execution duration reaches the set duration, the state of the alternative communication writing information can be adjusted to be the confirmation failure. The set time length is usually the longest receiving time length, and represents the time length of longest capable of receiving telegram data, and can be taken as a unit of minutes.
Further, the communication writing information and the communication receiving information are stored in a local database, and the state of the communication writing information is set as a state to be confirmed.
In some embodiments, the executing entity may store the communication writing information and the communication receiving information in a local database, and set a state of the communication writing information to a state to be confirmed.
Further, the time position of the local database is determined by the time of the message writing in the communication.
In some embodiments, the executing entity may determine the time point of the local database by sending the time of the communication write-in information. The initial value of the time point is the time of the communication writing information transmitted earliest in the local database. The time-point may be used for information inquiry, in particular for writing information for communication to be acknowledged. The initial value of the time point may be the sending time of the communication writing information sent earliest in the local database. The initial value is typically the first time point after the first stored communication write information, or data reset (e.g., empty).
Further, the time-point of the local database is updated based on the status of the adjusted alternative communication write information.
In some embodiments, the executing entity may update the time-point of the local database based on the status of the adjusted alternative communication write information. For example, the write time of the communication candidate write information whose status is successful in confirmation and whose write time is the latest is updated to the time point of the local database. For another example, the write time of the candidate communication write information whose status is failed in the validation and whose write time is the earliest is updated to the time point of the local database. If all the alternative communication writing information is confirmed to be successful, the writing time of the latest piece of alternative communication writing information can be updated to be a time point. If the candidate communication writing information contains information of matching failure, the writing time of the earliest candidate communication writing information of matching failure can be updated to be a time point. It will be appreciated that the above-mentioned time-point, set duration, etc. parameters may be set by themselves, for example, may be configured in a nacos (a service registry, configuration center).
And step 105, in response to determining that the communication data is successfully transmitted to the target control system, acquiring a current proportional-integral-derivative measurement value of the target control system, and determining an absolute value of deviation between the proportional-integral-derivative measurement value and the target measurement value.
In some embodiments, the executing entity may determine an absolute value of a deviation between the pid measurement value and a target measurement value in response to determining that the communication data is successfully transmitted to the target control system, and collecting a current pid measurement value of the target control system. The proportional-integral-derivative measurement may refer to a PID measurement of the target control system. The target measurement value may refer to a predetermined characterization PID value.
And step 106, suspending the proportional-integral-derivative adjustment of the target control system in response to determining that the absolute value of the deviation is within the dead zone and exceeds a set time.
In some embodiments, the executing entity may suspend the proportional-integral-derivative adjustment of the target control system in response to determining that the absolute value of the deviation is within the dead zone and exceeds a set time. That is, if the absolute value of the deviation is within the dead zone and exceeds the set time, the dead zone is considered to be valid, the output value of the PID is fixed, and the operation is no longer performed. The dead zone may refer to a range of input signals corresponding to zero output in the transfer function of the target control system.
In step 107, in response to determining that the absolute value of the deviation is not within the deadband, the output value of the target control system is activated to adjust until the target control system reenters the deadband.
In some embodiments, the executing entity may activate the output value of the target control system to adjust in response to determining that the absolute value of the deviation is not within the deadband until the target control system reenters the deadband. If the absolute value of the deviation is outside the dead zone and exceeds the set time, the dead zone is considered to be valid, and the output value of the PID is activated to adjust until the system reenters the dead zone.
Therefore, when the system performs PID regulation, if the measured value is stable, the system keeps steady state, the PID regulation is not effective, and if the measured value changes along with the working condition and exceeds the dead zone range, the PID regulation is effective, and the measured value is pulled back into the dead zone in a short time, so that the measured value reaches the target value, and frequent oscillation of the system is avoided.
The above embodiments of the present disclosure have the following advantageous effects: existing communication modes are improved by the dead zone control method based on the control system of some embodiments of the present disclosure. The sending end can send the same information to the control system and simultaneously send the same information to the sending end. The communication writing content is processed to obtain communication information, and the communication receiving content is processed to obtain receiving information. The written information and the received information may then be compared in an asynchronous manner. A successful comparison indicates a successful communication. The efficiency and timeliness of confirmation are improved, and the automatic operation capacity and efficiency of the system are also improved. In addition, when the system performs PID regulation, if the measured value is stable, the system keeps steady state, the PID regulation is not effective, and if the measured value changes along with the working condition and exceeds the dead zone range, the PID regulation is effective, and the measured value is pulled back into the dead zone in a short time, so that the measured value reaches the target value, and frequent oscillation of the system is avoided.
Fig. 2 is a schematic block diagram of a structure of a computer device according to an embodiment of the disclosure. The computer device may be a terminal.
As shown in fig. 2, the computer device includes a processor, a memory, and a network interface connected by a system bus, wherein the memory may include a non-volatile storage medium and an internal memory.
The non-volatile storage medium may store an operating system and a computer program. The computer program comprises program instructions that, when executed, cause the processor to perform any of a number of dead zone control methods based on the control system.
The processor is used to provide computing and control capabilities to support the operation of the entire computer device.
The internal memory provides an environment for the execution of a computer program in a non-volatile storage medium that, when executed by the processor, causes the processor to perform any of a number of control system-based dead zone control methods.
The network interface is used for network communication such as transmitting assigned tasks and the like. Those skilled in the art will appreciate that the architecture shown in fig. 2 is merely a block diagram of some of the architecture relevant to the disclosed aspects and is not limiting of the computer device to which the disclosed aspects apply, and that a particular computer device may include more or fewer components than shown, or may combine some of the components, or have a different arrangement of components.
It should be appreciated that the processor may be a central processing unit (Central Processing Unit, CPU), but may also be other general purpose processors, digital signal processors (Digital Signal Processor, DSP), application specific integrated circuits (Application Specific Integrated Circuit, ASIC), field-programmable gate arrays (Field-Programmable Gate Array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or the like. Wherein the general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
Wherein, in one embodiment, the processor is configured to execute a computer program stored in the memory to implement the steps of: writing communication data into a communication gateway provided by a target control system to send the communication data to the target control system, wherein the communication address of the communication data comprises the address of a sending end and the address of the target control system; generating communication writing information corresponding to the communication data in response to determining that the communication data is successfully written; generating communication receiving information according to the communication feedback data in response to reading the communication feedback data from the communication gateway; determining whether the communication data is successfully transmitted to the target control system through the communication writing information and the communication receiving information; in response to determining that the communication data is successfully transmitted to the target control system, collecting a current proportional-integral-derivative measurement value of the target control system, and determining an absolute value of a deviation between the proportional-integral-derivative measurement value and the target measurement value; suspending proportional-integral-derivative regulation of the target control system in response to determining that the absolute value of the deviation is within the dead zone and exceeds a set time; and in response to determining that the absolute value of the deviation is not within the deadband, activating an output value of the target control system to adjust until the target control system reenters the deadband.
Embodiments of the present disclosure also provide a computer readable storage medium having a computer program stored thereon, the computer program including program instructions that, when executed, implement a method that may refer to various embodiments of the dead zone control method of the present disclosure based on a control system.
The computer readable storage medium may be an internal storage unit of the computer device according to the foregoing embodiment, for example, a hard disk or a memory of the computer device. The computer readable storage medium may be an external storage device of the computer device, for example, a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), or the like.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The foregoing embodiment numbers of the present disclosure are merely for description and do not represent advantages or disadvantages of the embodiments. While the invention has been described with reference to certain preferred embodiments, it will be understood by those skilled in the art that various changes and substitutions of equivalents may be made without departing from the spirit and scope of the invention. Therefore, the protection scope of the present disclosure shall be subject to the protection scope of the claims.
Claims (6)
1. A dead zone control method based on a control system, the method comprising:
writing communication data into a communication gateway provided by a target control system to be sent to the target control system, wherein the communication address of the communication data comprises the address of a sending end and the address of the target control system;
generating communication writing information corresponding to the communication data in response to determining that the communication data is successfully written;
generating communication receiving information according to communication feedback data in response to reading the communication feedback data from the communication gateway;
determining whether the communication data is successfully transmitted to the target control system through the communication writing information and the communication receiving information;
in response to determining that the communication data is successfully transmitted to the target control system, collecting a current proportional-integral-derivative measurement value of the target control system, and determining an absolute value of a deviation between the proportional-integral-derivative measurement value and a target measurement value;
suspending proportional-integral-derivative regulation of the target control system in response to determining that the absolute value of the deviation is within a dead zone and exceeds a set time;
responsive to determining that the absolute value of the deviation is not within the deadband, the output value of the target control system is activated to adjust until the target control system reenters the deadband.
2. The method according to claim 1, wherein the method further comprises:
storing the communication writing information and the communication receiving information into a local database, and setting the state of the communication writing information as a state to be confirmed;
and determining a time position of the local database according to the sending time of the communication writing information, wherein the initial value of the time position is the time of the communication writing information which is sent earliest in the local database.
3. The method of claim 1, wherein generating the communication write information corresponding to the communication data comprises:
and converting the communication data through a summary algorithm to obtain communication writing information.
4. The method of claim 1, wherein generating communication receipt information from the communication feedback data comprises:
and converting the communication feedback data through a summary algorithm to obtain communication receiving information.
5. A computer device, wherein the computer device comprises a processor, a memory, and a computer program stored on the memory and executable by the processor, wherein the computer program, when executed by the processor, implements the steps of the method according to any of claims 1-4.
6. A computer readable storage medium, wherein the computer readable storage medium has stored thereon a computer program, wherein the computer program, when executed by a processor, implements the steps of the method according to any of claims 1-4.
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