Tuning of Control Systems Over CSMA Networks

Tavassoli, Babak; Jabehdar-Maralani, Parviz; Rezaee, N.

doi:10.1109/tie.2008.2007553

Cited by 13 publications

(8 citation statements)

References 24 publications

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“…Medium access technology plays one of the important roles in the success of industrial communication. In [3], a soft real-time control system is presented using CSMA. In [4], a novel approach based on contention-based and schedule-based protocol is proposed.…”

Section: Figure 2 Typical Industrial Environmentsmentioning

confidence: 99%

Industrial Automation using Zigbee Communication Protocol

Mahmood*¹,

Sharma²

2019

IJRTE

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If we compare wireless communication over wired communication, wireless communication offer more advantages when compared to wired communication such as lower cost, fast deployment, higher flexibility & scalability and mobile nature of system communicated wirelessly. In Industrial automation, industrial communication has very challenging requirements like packet deadline, low transmission jitter, etc. In some places wired communication is only accepted and it cannot be replaced by wireless communication. Industrial applications also run more flexible requirements applications such as email, Video content or any other application. Those services are known as Best Effort (BE) services. In order to do both the industrial application and BE services we have proposed Zigbee communication together with the IEEE 802.11 standard in this article along with comparison between the two standards using physical layer solutions. This Zigbee communication is performed using a industrial automation design and it leads to less power consumption. Result and analysis in terms of real time services is left as a future work in this paper. It is proposed that throughZigbee solution it is possible to obtain better result in certain cases than those achieved using IEEE 802.11 standards.

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Section: Figure 2 Typical Industrial Environmentsmentioning

confidence: 99%

Industrial Automation using Zigbee Communication Protocol

Mahmood*¹,

Sharma²

2019

IJRTE

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“…This class of systems has been used for modeling NCSs [7,11,17,26]. A useful extension to MJS is introduced in [26], in which the system does not depend on s k directly, but it depends on another random parameter θ k whose probability distribution depends on s k .…”

Section: Appendix Amentioning

confidence: 99%

“…An approach similar to the appendix in [17] can be used for reducing the controller design calculations. …”

Section: Appendix Amentioning

confidence: 99%

“…The research about NCS is divided into several branches. Some of the important subjects are: handling the packet losses [5][6][7][8], Long communication delays [9][10][11], simultaneous study of delay and packet loss [12][13][14][15], limited access to the network [16,17], Control and communication co-design [18,19], analysis and design of the network as a part of the NCS [20,21] and other subjects.…”

Section: Introductionmentioning

confidence: 99%

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Controller design over communication networks with a fast retransmission strategy based on exact analysis

Tavassoli

Jabehdar-Maralani

Rezaee

2010

Int. J. Control Autom. Syst.

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The problem of using acknowledgement messages for reducing the effects of packet loss on the performance of a networked control system (NCS) is considered. A sampling and transmission strategy is proposed and the model of the NCS with a Markovian communication state is precisely determined which provides the necessary tools for exact NCS analysis and design. The results can be used efficiently to design simple and practical controllers like PID by minimizing the value of a performance measure. During an example, an H ∞ performance measure of an NCS is optimized to design controllers, compare between them and evaluate them from both control and communication points of view.

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“…If a good process model is not available (Tian et al, 2003) or the process model is too complicated (Zhang et al, 2008), which is the usual case in modern industrial processes, the implementation of such methods developed for simple process models becomes questionable. The second problem is that some predictive model controllers and adaptive controllers have been proposed based on the assumption that the network characteristics are well understood in advance (Gabel and Litz, 2004;Martins and Jota, 2010;Tavassoli et al, 2009;Tipsuwan and Chow, 2003). If such an assumption does not hold, it is still difficult to design simple yet effective predictive control algorithms in an NCS with random network-induced delays.…”

Section: Introductionmentioning

confidence: 99%

Predictive compensation for variable network delays and packet losses in networked control systems

Tian

Xia

Tian

2012

Computers & Chemical Engineering

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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-design of both network and controller. It also alleviates the requirements of precise process models and full understanding of NCS network dynamics. For a series of possible sensor-to-actuator delays, the controller computes a series of corresponding redundant control values. Then, it sends out those control values in a single packet to the actuator. Once receiving the control packet, the actuator measures the actual sensor-to-actuator delay and computes the control signals from the control packet. When packet dropout occurs, the actuator utilizes past control packets to generate an appropriate control signal. The effectiveness of the approach is demonstrated through examples.

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Tuning of Control Systems Over CSMA Networks

Cited by 13 publications

References 24 publications

Industrial Automation using Zigbee Communication Protocol

Industrial Automation using Zigbee Communication Protocol

Controller design over communication networks with a fast retransmission strategy based on exact analysis

Predictive compensation for variable network delays and packet losses in networked control systems

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