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Method and device for identifying vehicle image
InactiveCN1783109AGuaranteed manual interpretation of vehicle characteristicsMeet storage capacity requirementsCo-operative working arrangementsCharacter and pattern recognitionMachine visionDatabase server
The method and device for identifying running vehicle image may be used in toll gate of expressway and highway, entrance guard, safe guard, city traffic and other fields. By means of robot vision technology, image compression technology, contact and non-contact card read / write technology, and automatic vehicle license plate distinguishing technology, the present invention realizes vehicle identity confirming and raises passing vehicle managing efficiency. The device includes passing card, passing card read / write device, main controlling computer, image acquisition card, video unit, light compensating lighting unit, display and vehicle managing center database server. The method and device of the present invention can identify vehicles accurately and has real-time operation, opening system, convenient use, high performance / cost ratio and other advantages.
Owner:昆明利普机器视觉工程有限公司
Double-input and double-output NDCS unknown time delay hybrid control method
InactiveCN107065572AExempt from synchronization requirementAvoid estimation errorAdaptive controlLoop controlTime delays
A double-input and double-output NDCS unknown time delay hybrid control method belongs to the technical field of a multiple-input and multiple-output NDCS having a limited bandwidth resource. A method using a real network data transmission process between all nodes in a TITO-NDCS to replace a network time delay compensation model between the nodes is brought forward aiming at the problems that, for the TITO-NDCS double input signals and double output signals of which are influenced and coupled with each other and which needs decoupling processing, stability of each closed-loop control circuit is influenced, stability of the whole system is influenced and that even loss of stability of the TITO-NDCS is resulted in due to network time delay of network data during transmission between the nodes. SPC and IMC are separately applied to a circuit of the TITO-NDCS. Measurement, estimation or identification of the network time delay between the nodes can be avoided, a clock signal synchronization requirement is reduced, an influence of a network uncertain time delay on TITO-NDCS stability is lowered, and the control performance quality of the system is improved.
Owner:HAINAN UNIVERSITY
On-line charging system, service implementing method and system
InactiveCN101309333AReduce hardware configurationSave hardware investmentSupervisory/monitoring/testing arrangementsService implementationEconomic benefits
The invention discloses a service implementation method which includes that all the user data are stored in an online charging system; the online charging system acquires the second calling request from the service control point; the second calling request carries the calling number, the called number and the location information of the charged user; wherein, the service control point constructs and sends the second calling request after receiving the first calling request from the user; the online charging system determines the calling authorization, the calling type according to the calling number, the called number and the location information of the charged user, and processes charging according to the stored user data of the charged user. The invention also discloses an online charging system and a service implementation system. Based on the service implementation method, the online charging system and the service implementation system, all the user data are stored in the OCS; the hardware configuration of the SCP is reduced and the service logic is simplified; thereby, the hardware investment of the operator, the workload of the development and maintenance are reduced; the economic benefit of the operator is improved.
Owner:ZTE CORP
Test system and method for peripheral equipment of terminal
ActiveCN101094118ASave hardware investmentDetecting faulty computer hardwareData switching networksCommunication unitComputer terminal
The system comprises: server and terminal, both are connected via network. Said server comprises: a server side application program main controller for realizing the system service function and outputting the control instruction according to the service requirement; a peripherals driving unit for receiving the control instruction and outputting the driving instruction to the peripherals; a server side communication unit for communicating with terminal and outputting the peripherals driving instruction. The terminal comprises: terminal communication unit for communicating with the server side communication unit and receiving the peripherals driving instruction; a terminal application program main control unit for identifying all peripherals driving instruction from server side and outputting the peripherals calling instruction according to the peripherals driving instruction; a peripherals simulating unit for simulating the running of peripherals according to the peripherals calling instruction.
Owner:INDUSTRIAL AND COMMERCIAL BANK OF CHINA
Hybrid control method for uncertain time delay of two-input and two-output network control system
ActiveCN106707762AExempt from synchronization requirementAvoid estimation errorAdaptive controlData transmissionVIT signals
The invention discloses a hybrid control method for an uncertain time delay of a two-input and two-output network control system (TITO-NCS), and belongs to the technical field of multi-input and multi-output network control systems with limited bandwidth resources. Aiming at the problems that the two input signals and two output signals of the TITO-NCS are mutually affected, the stability of one closed loop control circuit is affected and the stability of another closed loop control circuit is also affected due to a network time delay generated by transmission of network data among nodes, or even loss of the stability of the TITO-NCS is caused, a compensation model for replacing the uncertain time-delay with network data transmission process among all real nodes in the TITO-NCS is provided; and IMC and SPC hybrid control is carried out on two circuits separately, so that measurement, estimation or recognition of the network time delay among the nodes can be avoided, the requirements of clock signal synchronization of the nodes are avoided, the influence of the uncertain time delay on the stability of the TITO-NCS can be reduced and the control performance quality of the system is improved.
Owner:HAINAN UNIVERSITY
Construction method for optical fibre temperature survey apparatus
InactiveCN101344439AImprove dynamic performanceHigh measurement accuracyThermometer detailsThermometers using physical/chemical changesDifferentiatorEngineering
The invention discloses a building method of an optical fiber temperature measuring device which is used for building a temperature measuring device that is applicable to high-voltage power equipment and has better dynamic performance, better measuring precision and lower production cost. The optical fiber temperature measuring device consists of an optical fiber temperature sensor (2) with semiconductor absorption and a neural network inverse dynamic compensator (3) which are serially connected; the optical fiber temperature sensor (2) with semiconductor absorption is used for converting the temperature of measured points into converted photoelectric voltage; the neural network inverse dynamic compensator (3) consists of a differentiator (31) and a static neural network (32), is realized with a single chip micyoco and peripheral equipment, and is used for obtaining dynamic compensation results, finishing the dynamic compensation of the converted photoelectric voltage, and improving the precision and the dynamic performance of temperature measurement.
Owner:SOUTHEAST UNIV
Two-input two-output networked control system delay compensation SPC (smith predictor control) and IMC (internal model control) method
InactiveCN106773723AExempt from synchronization requirementAvoid estimation errorAdaptive controlNODALClosed loop
The invention belongs to the technical field of bandwidth resource limited MIMO-NCSs (multiple-input multiple-output networked control systems) and relates to a two-input two-output networked control system delay compensation SPC (smith predictor control) and IMC (internal model control) method. In order to solve the problems that two-input two-output signals in a TITO-NCS (two-input two-output networked control system) have mutual effect, network delay due to the transmission of network data between nodes affects the stability of one closed-loop control circuit of the system and may also affect the stability of another closed-loop control circuit while even stability loss is caused to the TITO-NCS, it is presented that an inter-node network delay compensation model is replaced by network data transmission process between all true node s in the TITO-NCS, with dynamic feedforward as well as SPC and IMC applied to the two circuits; by using the method of the invention, it is possible to omit the measurement, estimation or identification of inter-node network delay, omit the requirement on node clock signal synchronization, reduce the effect of network delay upon TITO-NCS stability, and improve the control performance quality of the system.
Owner:HAINAN UNIVERSITY
Method for designing dislocated scattered cluster environment distributed concurrent processes
ActiveCN103324538ASave hardware investmentImprove work efficiencyResource allocationInformation systemPersonal computer
The invention provides a method for designing dislocated scattered cluster environment distributed concurrent processes. The method comprises the steps of step1, monitoring and obtaining operation information of personal computers (PCs) of users in networking, and sorting and sending calculation tasks simultaneously; step2, receiving small division task blocks through the PCs of the users, and performing synchronous calculation on separated coupling data; and step3, collecting the separated coupling data of the PCs of the users in the networking, and performing integration calculation and feedback. According to the method, scattered clusters formed by dislocated client PCs in the same networking can be combined dynamically, data sending operation is monitored in real time, and resources are distributed step-by-step reasonably and dynamically, accordingly, the information system computational efficiency is improved.
Owner:STATE GRID CORP OF CHINA +1
Low-cost field bus remote input-output system
InactiveCN102314161AIntelligentFunctionalTotal factory controlProgramme total factory controlModbusMaster station
The invention discloses a low-cost field bus remote input-output system comprising a control module and an I / O (Input / Output) module; a control program is stored in the control module; the control module is used for managing the I / O module through an internal bus; the acquisition and the conversion of field signals are finished by the I / O module; and field equipment is controlled by the control module through the I / O module. An MODBUS communication protocol is stored in the control module which operates an MODBUS-RTU protocol stack; the MODBUS communication protocol comprises an MODBUS slave station protocol and an MODBUS master station protocol; and the MODBUS master station protocol realizes data acquisition and remote monitoring of the field equipment through the MODBUS slave station protocol. The low-cost field bus remote input-output system is simple in structure and convenient to install. Due to the adoption of RS-485 bus, the workload for design and installation is reduced, and the investment is saved. The low-cost field bus remote input-output system can realize real-time monitoring and controlling functions and has rather high real-time property and reliability.
Owner:MICROCYBER CORP +1
TITO-NDCS variable network delay compensation method
InactiveCN106802561AReduce the impactImprove dynamic performance qualityAdaptive controlTwo degrees of freedomMIMO
The invention provides a TITO-NDCS variable network delay compensation method, and belongs to the technical field of bandwidth resource limited MIMO-NDCS. Aiming at the problems of loss of stability of TITO-NDCS and influencing the stability of each closed control loop and influencing the stability of the whole system due to network delay generated by transmission of network data between nodes in the TITO-NDCS in which two-input and two-output signals are mutually influenced and coupled and require to be decoupled, the method that the network data transmission process between all the real nodes in the TITO-NDCS replaces a network delay compensation model is put forward, and two-degree-of-freedom IMC and SPC are performed on the two loops respectively so that measurement, estimation or identification of the network delay between the nodes can be omitted, the synchronization requirement of node clock signals can be omitted, the influence of the variable network delay on the stability of the TITO-NDCS can be reduced and the system control performance quality can be improved.
Owner:HAINAN UNIVERSITY
Working method of Xiaolingtong network used as terminal of subnet of 3rd generation mobile network
InactiveCN101330688ASimple structurePracticalRadio/inductive link selection arrangementsThird generation mobile networksDual mode
The invention provides a working method for a terminal by taking a personal handphone system (PHS) network as a sub-network of a third-generation mobile network. The system comprises a PHS / 3G dual-mode mobile terminal, a PHS network and a 3G mobile network. When a 3G user uses the dual-mode mobile terminal, and takes precedence to be accessed to the 3G mobile network, the 3G user takes precedence to be accessed to the 3G mobile network automatically; when the 3G user just has PHS wireless signals, the 3G user is accessed to the PHS network automatically and is interconnected with a 3G core network through a PHS core network, thus realizing user authentication and location update in the 3G core network; a calling is set up in the PHS core network, namely the PHS network serves as the sub-network accessed to the 3G network. The system and the terminal have the advantages of simple structure and practicability; the working method solves the problem of insufficient network coverage and difficult provision of communication services at the early stage of establishment of the 3G network; the roaming function is provided for PHS single-module terminals using 3G numbers; the working method provides better mobile communication services for users by using the existing PHS network after a fixed-line service provider obtains a 3G mobile license plate.
Owner:GUANGDONG TELECOM ACAD OF SCI & TECH
System, terminal and method of using xiaolingtong network as third-generation mobile network sub-network
InactiveCN1980435AEasy to implementSimple structureRadio/inductive link selection arrangementsWireless communicationThird generation mobile networksThird generation
This system consists of PHS / 3G twin modes mobile terminal (TMMT), PHS net and 3G mobile net (3MN). When the 3G user uses TMMT and selects prior accessing 3MN mode, 3MN is auto prior accessed. However, in case only PHS wireless signal exists, PHS wireless net is auto accessed. Via the mutual connection between the PHS core net and the 3G core net, the user authentication and the position renewing are realized in the 3G core net while the call is built in the PHS core net. Here, the PHS net is treated as an accessing subnet of 3G net. The structure of this system and terminal are simple. This invention possesses extensive practical application and magnificent meaning. This invention solves the problem of hardly offering comm. service due to the shortage of net covering during the first built stage of 3G net. This invention offers the roaming function for the PHS single mode terminals using 3G number. After obtaining the 3G mobile license, the runner of the solid net can utilize the existed PHS net to offer users a better mobile comm. service.
Owner:CHINA TELECOM CORP LTD
Energy router for electric energy quality comprehensive control and power optimization, and control method of energy router
ActiveCN108242813AMeet the demand for high-quality power supplyRealize comprehensive management of power qualityEnergy industryReactive power adjustment/elimination/compensationPower qualityTransformer
An energy router for electric energy quality comprehensive control and power optimization comprises a series transformer, a grid side isolation converter, a load side converter, a function switching switch Si, and a centralized controller. The invention provides a novel low-voltage energy router which integrates a unified electric energy quality controller and a power optimization function and a control method thereof. Through the novel low-voltage energy router arranged between a network-side high-voltage AC bus and a load-side low-voltage AC bus of a smart distribution network, the control method determines the fault condition according to the sampling signal provided by the detecting unit, performs function selection, generates control commands and performs control, and realizes power quality comprehensive management and power optimization functions with minimum hardware cost. The energy router and the control method thereof can be widely used in factories, businesses, homes and schools.
Owner:SHANDONG POWER EQUIP +1
Random time delay compensation method for two-input and two-output networked decoupling control system
InactiveCN106773726AExempt from synchronization requirementAvoid estimation errorAdaptive controlTime delaysClosed loop
The invention discloses a random time delay compensation method for a TITO-NDCS (two-input and two-output networked decoupling control system) and belongs to the technical field of multiple-input and multiple-output networked decoupling control systems with limited bandwidth resources. As for the TITO-NDCS with two-input and two-output signals mutually affected and coupled requiring decoupling, in consideration that network time delay generated in a transmission process of network data among nodes affects stability of respective closed-loop control loops and the whole system and even leads to that the TITO-NDCS loses stability, the method for substituting a network data transmission process among all real nodes in the TITO-NDCS for a network time delay compensation model is put forward, so that measurement, estimation or identification of the network time delay among the nodes can be avoided, requirements on clock signal synchronization are lowered, influences of random time delay on stability of the TITO-NDCS are lowered and system control performance quality is improved.
Owner:HAINAN UNIVERSITY
Long delay compensation method for two-input and two-output networked decoupling control systems
InactiveCN106802562AExemption from sync requirementAvoid estimation errorAdaptive controlControl systemControl quality
The invention provides a long delay compensation method for two-input and two-output networked decoupling control systems, and belongs to the technical field of bandwidth resource limited MIMO-NDCS. Aiming at the problems of loss of stability of TITO-NDCS and influencing the stability of each closed control loop and influencing the stability of the whole system due to network delay generated by transmission of network data between nodes in the TITO-NDCS in which two-input and two-output signals are mutually influenced and coupled and require to be decoupled, the method that the network data transmission process between all the real nodes in the TITO-NDCS replaces a network delay compensation model is put forward, and SPC and IMC are performed on the two loops respectively so that measurement, estimation or identification of the network delay between the nodes can be omitted, the synchronization requirement of clock signals can be reduced, the influence of long delay on the stability of the TITO-NDCS can be reduced and the system control quality can be improved.
Owner:HAINAN UNIVERSITY
Method for applying electronic identifier of motor vehicle to parking lot gate
InactiveCN108648289AShort reading timeImprove anti-interference abilityTicket-issuing apparatusRoad vehicles traffic controlInternet deliveredComputer science
The invention relates to the technical field of urban parking management, in particular to a method for applying an electronic identifier of a motor vehicle to a parking lot gate. An internet parsingmode is employed to place a decoding terminal at the back end of the Internet, an electronic license plate of a motor vehicle is read through a reading device and information is transmitted to a management computer, the management computer performs random encryption of the read information, the Internet technology is employed to transmit the information to a server at the rear end of the network,the server transmits the received information to the decoding terminal, the decoding terminal performs random code verification decoding of the received information and performs verification and decoding of the encrypted electronic license plate information through a safety module PSAM in the decoder to obtain the vehicle information of the motor vehicle and send the decoded vehicle information after random encryption to the server, the server transmits the information back to the management computer through the Internet, and the management computer performs decryption of the random encryptionand records and stores the vehicle information after decryption so as to complete obtaining of the vehicle information of the electronic license plate.
Owner:河南淘淘谷信息技术有限公司
Method for compensating uncertain time delay of double-input-output network decoupling control system
InactiveCN106773733AExempt from synchronization requirementAvoid estimation errorAdaptive controlMulti inputLoop control
The invention relates to a method for compensating the uncertain time delay of a double-input-output network decoupling control system, belongs to the technical field of multi-input-output network decoupling control systems with limited bandwidth resources, and aims to solve the problems that the double-input-output signals of TITO-NDCS affect each other and are coupled and need to be decoupled, the time delay generated during network data transmission among nodes affects the stability of each closed-loop control loop and the stability of the whole system, and even TITO-NDCS instability is caused. The method which uses the network data transmission process among all real nodes in the TITO-NDCS to replace network time delay compensation models among the nodes has the advantages that measuring, estimation or identification of the network time delay among the nodes can be avoided, clock signal synchronization requirements are lowered, influence of the uncertain network time delay on TITO-NDCS stability is lowered, and system control performance quality is improved.
Owner:HAINAN UNIVERSITY
Network delay compensation method of two-input and two-output networked decoupling control systems
InactiveCN106802558AExempt from synchronization requirementAvoid estimation errorAdaptive controlTransfer procedureControl system
The invention provides a network delay compensation method of two-input and two-output networked decoupling control systems (TITO-NDCS), and belongs to the technical field of bandwidth resource limited MIMO-NDCS. Aiming at the problems of loss of stability of the TITO-NDCS and influencing the stability of respective closed control loops and influencing the stability of the whole system due to network delay generated by the transmission process of network data between nodes in the TITO-NDCS in which two-input and two-output signals are mutually influenced and coupled and require to be decoupled, the method that the network data transmission process between all the real nodes in the TITO-NDCS replaces a network delay compensation model is put forward so that measurement, estimation or identification of the network delay between the nodes can be omitted, the synchronization requirement of clock signals can be reduced, the influence of the network delay on the stability of the TITO-NDCS can be reduced and the control performance quality of the system can be improved.
Owner:HAINAN UNIVERSITY
Time-varying time delay compensation method for two-input and two-output networked decoupling control system
InactiveCN106773730AExempt from synchronization requirementAvoid estimation errorAdaptive controlTime delaysClosed loop
The invention discloses a time-varying time delay compensation method for a TITO-NDCS (two-input and two-output networked decoupling control system) and belongs to the technical field of multiple-input and multiple-output networked decoupling control systems with limited bandwidth resources. As for the TITO-NDCS with two-input and two-output signals mutually affected and coupled requiring decoupling, in consideration that network time delay generated in a transmission process of network data among nodes affects stability of respective closed-loop control loops and the whole system and even leads to that the TITO-NDCS loses stability, the method for substituting a network data transmission process among all real nodes in the TITO-NDCS for a network time delay compensation model is put forward, so that measurement, estimation or identification of the network time delay among the nodes can be avoided, requirements on clock signal synchronization are lowered, influences of time-varying time delay on stability of the TITO-NDCS are lowered and system control performance quality is improved.
Owner:HAINAN UNIVERSITY
Compensation method for long network time delay of TITO-NDCS
InactiveCN106842940AExemption from sync requirementAvoid estimation errorAdaptive controlTime delaysControl quality
Owner:HAINAN UNIVERSITY
Unknown time delay hybrid control method of two-input two-output networked decoupling control system
InactiveCN106773731AExemption from sync requirementAvoid estimation errorAdaptive controlLoop controlTime delays
The invention discloses an unknown time delay hybrid control method of a two-input two-output networked decoupling control system and belongs to the technical field of a MIMO (multiple-input multiple-output)-NDCS (networked decoupling control system) with limited bandwidth resources. Aiming at a TITO (two-input two-output)-NDCS with two-input two-output signals mutually influenced and coupled and needing to be processed through decoupling, network time delay caused by transmission of network data among nodes has influence on both stability of each closed-loop control loop and stability of the whole system and even leads to instability of the TITO-NDCS, a network of using the network data transmission process among all real nodes in the TITO-NDCS to replace a network time delay compensation model thereamong is put forward, and SPC (Smith predictor control) and IMC (internal model control) are respectively implemented on two loops, so that measurement, estimation or recognition of network time delay among the nodes can be omitted, clock signal synchronization requirements can be lowered, influence of unknown network time delay on stability of the TITO-NDCS can be lowered, and control quality of the system can be improved.
Owner:HAINAN UNIVERSITY
Two-input two-output network decoupling control system unknown time-delay two-degree-of-freedom IMC method
InactiveCN107065529AExempt from synchronization requirementAvoid estimation errorAdaptive controlTime delaysControl system
The invention proposes a two-input two-output network decoupling control system (TITO-NDCS) unknown time-delay two-degree-of-freedom IMC method, which belongs to the technical field of a TITO-NDCS with limited bandwidth resources. In the face of the mutual influencing and coupling of two-input two-output signals, a decoupled TITO-NDCS shall be put in place, and since when the network data are transmitted among the nodes, network time delay occurs. This not only influences the stability of the closed-loop control circuits, but also impacts the stability of an entire system, and can even lead to the instability of the TITO-NDCS. Considering this, the network data transmission process among all real nodes in the TITO-NDCS is proposed to replace the network time delay compensation models among them, and at the same time, through the two-degree-of-freedom IMC to two loop circuits, it is possible to eliminate the measurement, estimation and identification of the network time delay among the nodes, to reduce the requirement for clock signal synchronization, to reduce the influence of the unknown network time delay on the stability of the TITO-NDCS, and to improve the system control quality.
Owner:HAINAN UNIVERSITY
Two-input two-output NDCS unknown time delay compensation and IMC method
InactiveCN107168043AExempt from synchronization requirementAvoid estimation errorSafety arrangmentsLoop controlTime delays
The invention provides a two-input two-output NDCS unknown time delay compensation and IMC method and belongs to the technical field of bandwidth resource limited multiple-input-multiple-output networked decoupling control systems. For the TITO-NDCS, where two-input and two-output signals are mutually influenced and coupled, and need decoupling processing, since network delay of network data generated in the inter-node transmission process not only influences stability of each closed-loop control loop, but also influences stability of the whole system, or even causes loss of stability of the TITO-NDCS, a method of using a real network data transmission process between all nodes in the TITO-NDCS to replace network delay compensation models is proposed, and IMC is carried out on loops thereof, thereby avoiding measurement, estimation or identification of network delay between nodes, reducing requirement for clock signal synchronization, reducing influence of unknown time delay on stability of the TITO-NDCS, and improving quality of control performance of the system.
Owner:HAINAN UNIVERSITY
Two-DOF (degree of freedom) IMC (internal model control) and SPC (smith predictor control) method for compensating uncertain delay in TITO-NCS (two-input two-output networked control system)
InactiveCN106773727AReduce quality problemsReduced stabilityAdaptive controlClosed loopSmith predictor
The invention belongs to the technical field of bandwidth resource limited MIMO-NCSs (multiple-input multiple-output networked control systems) and relates to a two-DOF (degree of freedom) IMC (internal model control) and SPC (smith predictor control) method for compensating uncertain delay in TITO-NCS (two-input two-output networked control system). In order to solve the problems that two-input two-output signals in a TITO-NCS (two-input two-output networked control system) have mutual effect, network delay due to the transmission of network data between nodes affects the stability of one closed-loop control circuit of the system and may also affect the stability of another closed-loop control circuit while even stability loss is caused to the TITO-NCS, it is presented that an inter-node network delay compensation model is replaced by network data transmission process between all true nodes in the TITO-NCS, with dynamic feedforward as well as two-DOF IMC and SPC applied to the two circuits; by using the method of the invention, it is possible to omit the measurement, estimation or identification of inter-node network delay, omit the requirement on node clock signal synchronization, reduce the effect of uncertain network delay upon TITO-NCS stability, and improve the control performance quality of the system.
Owner:HAINAN UNIVERSITY
Two-input and two-output network decoupling control system non-deterministic time delay compensation method
InactiveCN106873368AExemption from sync requirementAvoid estimation errorAdaptive controlMulti inputTime delays
The invention relates to a two-input and two-output network decoupling control system non-deterministic time delay compensation method and belongs to the technical field of bandwidth resource limited MIMO-NDCSs (multi-input and multi-output network decoupling control systems). Since two-input signals and two-output signals affect and couple each other, a two-input and two-output network decoupling control system (TITO-NDCS) for decoupling processing is required; network delay of the transmission of network data between nodes not only affects the stability of respective closed-loop control loops, and but also affect the stability of the whole system, and even leads to the loss of the stability of the TITO-NDCS, and thus, a network data transmission process between all real nodes in the TITO-NDCS is adopted to substitute the compensation model of the network delay in the TITO-NDCS, and SPC (Smith Predictor Control) and IMC (Internal Model Control) are performed on the two loops, and therefore, measurement, estimation or identification of the network delay of the nodes can be eschewed, clock signal synchronization requirements can be lowered, influence on the stability of the TITO-NDCS caused by non-deterministic network delay can be reduced, and the control quality of the system can be improved.
Owner:HAINAN UNIVERSITY
Two-input and two-output networked decoupling control system large network time delay IMC method
InactiveCN106814618AExemption from sync requirementAvoid estimation errorAdaptive controlTime delaysClosed loop
The invention discloses a two-input and two-output networked decoupling control system large network time delay IMC method, and belongs to the MIMO-NDCS technology field having limited bandwidth resources. By aiming at influences and coupling between two-input and two-output signals, decoupling processing of TITO-NDCS is required, and because of the network time delay generated by transmission of network data among nodes, stabilities of various closed-loop control circuits are affected, and stability of a whole system is affected, and then the problem of the loss of the stability of the TITO-NDCS can be even caused. The method of using the process of the network data transmission among all of the actual nodes of the TITO-NDCS to replace a network time delay compensation model is provided, and two-freedom degree IMC and one-freedom degree are carried out on the two closed loop control circuits, and therefore the measurement, the estimation, or the identification of the network time delay among the nodes are eliminated, a requirement on synchronization of node clock signals is lowered, the influences of the network time delay on the stability of the TITO-NDCS are reduced, and system control performance quality is improved.
Owner:HAINAN UNIVERSITY
Two-input two-output NDCS time-varying delay compensation and control method
InactiveCN107102628AExempt from synchronization requirementAvoid estimation errorTotal factory controlProgramme total factory controlMulti inputTime delays
The invention provides a two-input two-output NDCS time-varying delay compensation and control method and belongs to the technical field of multi-input multi-output NDCS with limited bandwidth resources. By aiming at influences and coupling between two-input and two-output signals, decoupling processing of TITO-NDCS is required, and because of the network time delay generated by transmission of network data among nodes, stabilities of various closed-loop control circuits are affected, and stability of a whole system is affected, and then the problem of the loss of the stability of the TITO-NDCS can be even caused. The method of using the process of the actual network data transmission among all the nodes of the TITO-NDCS to replace a network time delay compensation model is provided, and two-freedom-of-degree IMC and SPC are carried out on the loop, and therefore the measurement, the estimation, or the identification of the network time delay among the nodes are eliminated, a requirement on synchronization of node clock signals is lowered, the influences of the network time-varying delay on the stability of the TITO-NDCS are reduced, and system control performance quality is improved.
Owner:HAINAN UNIVERSITY
Unknown network time delay compensation and control method for NPCCS
InactiveCN109001977AExempt from synchronization requirementAvoid wastingAdaptive controlTime delaysStructure of Management Information
The invention discloses an unknown network time delay compensation and control method for NPCCS (networked parallel cascade control systems), and belongs to the technical field of single-input and double-output networked control systems with limited bandwidth resources. For the problems that in the NPCCS, due to a network time delay generated when network data is transmitted between nodes, the control performance quality of the NPCCS is reduced and even the systems lose stability, it is proposed that all real network data transmission processes in the NPCCS replace an inter-node network time delay compensation model; controller end-based two-degree-of-freedom IMC and controller end-based SPC are implemented for a primary closed control loop and a secondary closed control loop respectively;and the measurement, estimation or identification of the inter-node network time delay is removed from the system structure, so that the influence of an unknown network time delay on the NPCCS stability is reduced, the control performance quality of the system is improved, and the compensation and control of the unknown network time delay are realized.
Owner:HAINAN UNIVERSITY
Positioning device and method of Torpedo car
ActiveCN101519077BImprove accuracySave hardware investmentRailway signalling and safetyMonitoring systemCommand system
Owner:BAOSHAN IRON & STEEL CO LTD
Network delay two-degree-of-freedom IMC method of two-input and two-output networked control systems
InactiveCN106802559AReduce quality problemsReduced stabilityAdaptive controlNetwork controlNetwork data
The invention provides a network delay two-degree-of-freedom IMC method of two-input and two-output networked control systems, and belongs to the technical field of bandwidth resource limited MIMO-NCS. Aiming at the problems of loss of stability of TITO-NCS and influencing the stability of its own closed control loop and influencing the stability of another closed control loop due to network delay generated by transmission of network data between nodes in the TITO-NCS in which two-input and two-output signals are mutually influenced, the method that the network data transmission process between all the real nodes in the TITO-NCS replaces a network delay compensation model is put forward, and two-degree-of-freedom IMC is performed on the two loops. With application of the method, measurement, estimation or identification of the network delay between the nodes can be omitted, the synchronization requirement of node clock signals can be omitted, the influence of the network delay on the stability of the TITO-NCS can be reduced and the control performance quality of the system can be improved.
Owner:HAINAN UNIVERSITY
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