WiFi implementation of Wireless Networked Control Systems

Refaat, Tarek K.; Daoud, Ramèz M.; Amer, Hassanein H.; Makled, Esraa A.

doi:10.1109/inss.2010.5573993

Cited by 22 publications

(20 citation statements)

References 10 publications

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“…References [14] and [15] are examples of WNCSs. While the system in [15] uses modified Bluetooth, the system in [14] uses unmodified IEEE 802.11b to provide communication between the nodes in a workcell.…”

Section: Previous Workmentioning

confidence: 99%

“…While the system in [15] uses modified Bluetooth, the system in [14] uses unmodified IEEE 802.11b to provide communication between the nodes in a workcell. The workcell in both systems has 30 sensors and 30 actuators communicating to a controller within a 3m×3m cell [14,15]. Sensors send samples to the controller, which processes the data received and takes decisions.…”

Section: Previous Workmentioning

confidence: 99%

“…This replacement facilitates installation, decreases maintenance costs and simplifies systems. A Wireless Networked Control System (WNCS) is proposed in [14] similar to [15]. The system in [14] uses unmodified Wi-Fi and switched Ethernet to provide for communication between workcell nodes [14,16,17].…”

Section: Introductionmentioning

confidence: 99%

“…A Wireless Networked Control System (WNCS) is proposed in [14] similar to [15]. The system in [14] uses unmodified Wi-Fi and switched Ethernet to provide for communication between workcell nodes [14,16,17]. Both systems in [14] and [15] were able to meet the requirements for delay, with zero packet drops in the existence of interference.…”

Section: Introductionmentioning

confidence: 99%

“…The WNCS proposed in [14] was enhanced to allow for cell concatenation in [19]. The study in [19] was able to successfully use 802.11g Wi-Fi and switched Ethernet in three concatenated cells, with fault-tolerance at the controller level and interference resilience.…”

Section: Introductionmentioning

confidence: 99%

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Wi-Fi-based hierarchical Wireless Networked Control Systems

Makled

Halawa

Daoud

et al. 2015

2015 IEEE International Conference on Industrial Technology (ICIT)

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This paper proposes a novel architecture for a hierarchical Wireless Networked Control System (WNCS). It consists of three cascaded workcells each containing 30 sensors, 30 actuators and one controller. The wireless communication protocol used is IEEE 802.11g with multicasting. The hierarchy of the system is such that the lowest level is that of the sensors and actuators, the intermediate level is the controllers, and the highest level is a supervisory node. This supervisor can be either active or passive. System performance is measured using OPNET simulations and the results are confirmed analytically. The system is shown to tolerate all possible controller failure scenarios. The supervisor can handle the entire control load of all three controllers, should the need arise. The system exhibits zero packet drops and delay constraints are met in all scenarios. The effect of interference is then investigated and the maximum interference that can be tolerated by the system is quantified.

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Section: Previous Workmentioning

confidence: 99%

Section: Previous Workmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Wi-Fi-based hierarchical Wireless Networked Control Systems

Makled

Halawa

Daoud

et al. 2015

2015 IEEE International Conference on Industrial Technology (ICIT)

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Grant management procedure for energy saving TDM-PONs

Mohammed

Newaz

Al-Hazemi

et al. 2018

Optical Fiber Technology

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A resilient bi‐level control strategy for power sharing and voltage balancing in bipolar DC microgrids

Babazadeh-Dizaji

Hamzeh

Dehkordi

2022

IET Generation Trans & Dist

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In the three‐level DC‐DC converter‐based bipolar DC microgrids, accurate power sharing among distributed generators and voltage balancing between the positive and negative poles are two main control objectives. This article presents a resilient bi‐level control strategy which simultaneously satisfies both aforementioned objectives. The proposed control structure is a combination of a distributed consensus‐based cooperative method and a washout filter‐based method. In the first level, a distributed consensus‐based cooperative control method with considering time delays and communication noises is developed to realize proportional power sharing. At this level, DGs operate collaboratively using only neighbour‐to‐neighbour feedback over a sparse communication network, even if the communication network is susceptible to additive noise and time delay. In the second level, a decentralized control method is employed to restore the voltage of each pole of a bipolar DC microgrid to the desired value. The second level, which works without any communication links and additional control loops, utilizes a dynamic feedback incorporating washout filters. The whole proposed control strategy is robust against a single point of link‐failure and resilient against the communication time delays and noises as well. Comprehensive simulation studies are carried out in PLECS software to verify the effectiveness of the proposed control scheme.

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WiFi implementation of Wireless Networked Control Systems

Cited by 22 publications

References 10 publications

Wi-Fi-based hierarchical Wireless Networked Control Systems

Wi-Fi-based hierarchical Wireless Networked Control Systems

Grant management procedure for energy saving TDM-PONs

A resilient bi‐level control strategy for power sharing and voltage balancing in bipolar DC microgrids

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