98results about How to "Exempt from synchronization requirement" patented technology

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

The invention provides an external feedback and inner loop nondeterministic network time delay compensation method of a network cascade control system, belonging to the technical field of network control systems. In the invention, network data transmission process between external feedback network path nodes and inner loop network path nodes of a true network cascade control system are adopted toreplace a network time delay compensation model therebetween, thereby avoiding measurement, observation, estimation or identification of network data transmission nondeterministic time delay among the nodes and the requirements on node clock signal synchronism. By adopting the method, the influence of nondeterministic network time delay on system stability can be lowered, and the control performance quality of the system can be improved. The method provided by the invention is suitable for known mathematical models of main and auxiliary controlled objects, the network time delay can be largerthan a plurality of and even dozens of sampling periods, a network only exists in dynamic compensation and control of nondeterministic network time delay in an external feedback and inner loop network path of the network cascade control system.

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.

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.

The invention provides a two-input and two-output networked control system unknown time delay IMC method, belongs to the technical field of a bandwidth resource limited multiple-input and multiple-output networked control system, and aims at the mutual influence between two-input and two-output signals in the TITO-NCS. The network time delay generated by transmission of network data between nodes influences the stability of its own closed-loop control loop and also influences the stability of another closed-loop control loop and even causes loss of the stability of the TITO-NCS, and thus a compensation model of replacing the uncertain network time delay by the network data transmission process between all the real nodes in the TITO-NCS is put forward, and IMC is performed on the two loops. With application of the method, measurement, estimation or identification of the network time delay between the nodes can be eliminated, the requirement for node clock signal synchronization can be eliminated, the influence of the unknown network time delay on the stability of the TITO-NCS can be reduced and the control performance quality of the system can be improved.

The invention discloses a time delay second-degree-of-freedom IMC method for two-input and two-output networked decoupling control system, and relates to the technical field of multiple-input and multiple-output networked decoupling control system. For a TITO-NDCS which has two-input and two-output signals which impact one another, and often requires decoupling if the two-input and two-output signals are coupled, since network time delay which occurs in the transmission of network data among nodes not only impacts the stability of respective closed-loop control circuit and also impacts the stability of another closed-loop control circuit and even causes instability of the TITO-NDCS, the method herein proposes to replace an inter-network time delay compensating model with network data transmission among all real nodes in the TITO-NDCS, and applies dynamic feedforward and IMC on two circuits. Therefore, the method can prevent measurement, estimation or discrimination of network time delay among the nodes, lowers the requirements for node clock signal synchronization, reduces the impact on the stability of the TITO-NDCS by uncertain network time delay, and improves control properties and quality of the system.

The invention discloses a two-freedom degree IMC TITO-NDCS network time delay compensation 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 is carried out on the two 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.

The invention discloses a two-input and two-output networked decoupling control system random 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 IMC is carried out on the two 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 random network time delay on the stability of the TITO-NDCS are reduced, and system control performance quality is improved.

The invention discloses a time-varying time delay hybrid control method for a two-input and two-output networked decoupling control system and belongs to the technical field of MIMO-NDCSs (multiple-input and multiple-output networked decoupling control systems) with limited bandwidth resources. As for the TITO-NDCS (two-input and two-output networked decoupling control system) with two-input and two-output signals mutually affected and coupled requiring decoupling, in consideration that network time delay generated by transmission 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.

The invention provides a compensation method for external feedback and internal loop randomness network time delay of a network cascade control system, belonging to the technical field of network control systems. In the invention, a network time delay compensation model is replaced by utilizing an actual network data transmission process between an external feedback network path node and an internal loop network path node of the network cascade control system, measurement, observation, estimation or identification of network data transmission randomness time delay between the nodes is avoided, and the requirement on the clock signal synchronism of the nodes is eliminated. By utilizing the method, the influence of a randomness network time delay on the system stability can be reduced, and the control performance quality of the system is improved. The compensation method is suitable for the dynamic compensation and control of the randomness network time delay of the network only existing in the external feedback and internal loop network paths of the network cascade control system when a main controlled object mathematical model and an auxiliary controlled object mathematical model are known.

The invention provides an unknown network delay IMC method of 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 respective closed control loops 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 decoupling, 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 IMC is performed on the two loops 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 unknown network delay on the stability of the TITO-NDCS can be reduced and the system control quality can be improved.

The invention discloses an IMC method of time-varying network time delay of a two-input two-output networked decoupling control system, and belongs to the technical field of MIMO-NDCS with limited bandwidth resources. For a TITO-NDCS which has two-input and two-output signals which impact one another and are coupled, and often requires decoupling if the two-input and two-output signals are coupled, since network time delay which occurs in the transmission of network data among nodes not only impacts the stability of respective closed-loop control circuit and also impacts the stability of the entire system and even causes instability of the TITO-NDCS, the method herein proposes to replace an inter-network time delay compensating model with network data transmission among all real nodes in the TITO-NDCS and conduct IMC on two circuits. Therefore, the method can prevent measurement, estimation or discrimination of network time delay among the nodes, lowers the requirements for clock signal synchronization, reduces the impact on the stability of the TITO-NDCS by uncertain network time delay, and improves control properties and quality of the system.