نتایج جستجو برای: network control system ncs
تعداد نتایج: 3694468 فیلتر نتایج به سال:
MIMO (mult-input multi-output) networked control systems (NCSs) with multiple packet transmission is considered. The network-induced delay is assumed to be time-varying and less than one sampling period. Suppose the data of sensor node is part of system outputs and is transferred with static scheduling strategy, then the NCS is modeled as uncertain periodic system. The uncertain periodic system...
Many Networked Control Systems (NCS) comprise several control loops that are closed over a network of computation nodes. In those systems, periodic, sporadic and non-periodic packets share the network bandwidth, complex timing behavior and communication lead to delay and jitter, which both degrade the control performance. That is to say the performance of NCS is determined not only by control a...
With the increasing complexity of modern automation systems, Networked Control Systems (NCS) gain more and more importance due to their modularity and simplified diagnosis. In NCS, plant and controller are spatially separated and the control loop is physically closed through a communication network. Communication time delay in a NCS degrades the performance and may lead to instability. In this ...
Networked control systems (NCSs) offer many advantages over conventional control; however, they also demonstrate challenging problems such as network-induced delay and packet losses. This paper proposes an approach of predictive compensation for simultaneous networkinduced delays and packet losses. Different from the majority of existing NCS control methods, the proposed approach addresses co-d...
Abstract There are more problems of network data transmission in multi-loop NCS than in single loop NCS. It maybe lead to that one or more of closed-loop systems become unstable in multi-loop NCS. In order to solve this problem, a novel algorithm of fuzzy dynamic scheduling for multi-loop NCS is put forward in this paper. Firstly, the requirement of the sampling period of NCS is discussed. The ...
Network control system (NCS) approaches for distributed closed-loop systems have been established in industrial control. However, recent advancements cloud computing provide scalable, elastic, and low-cost networked capabilities over the internet, which can be utilized as an extension of NCS, this term, cloud-based (CCS) with a potential replacement controller. The main objective research is to...
In this paper, a uniform quantization design method for the parallel DC-DC converter network control system (NCS) is proposed in combination with sliding mode (SMC) strategy to solve problem that performance of poor due inability process long signals time. Taking buck as an example, firstly, master-slave current sharing SM controller designed. Then, NCS containing designed uniformly quantized c...
Networked Controlled systems (NCSs) are composed of actuators, sensors and controllers distributed over the network. A NCS is a control system in which the regulation loops are closed by the communication network (Zhang et al., 2001). However, it is necessary to ensure the stability of the process control, taking into account the performances of the network (Branicky et al., 2003). NCSs are mor...
The performance of a class of Model-Based Networked Control System (MBNCS) is considered in this paper. A MB-NCS uses an explicit model of the plant to reduce the network bandwidth requirements. In particular, an Output Feedback MB-NCS is studied. After reviewing the stability results for this system and some lifting techniques basics, two performance measures related to the traditional H2 perf...
Networked Control Systems (NCS) are distributed systems where plants, sensors, actuators and controllers communicate over shared networks. Non-ideal behaviors of the communication network include variable sampling/transmission intervals and communication delays, packet losses, communication constraints and quantization errors. NCS have been the object of intensive study in the last few years. H...
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