scholarly journals Protocol-Based Control for Cyber-Physical Systems with Environment-Dependent Energy Harvesting Sensors

2021 ◽  
Author(s):  
Jiajia Li ◽  
Xin Tian ◽  
Guoliang Wei
Keyword(s):  
Energy Harvesting ◽  
Data Transmission ◽  
Energy Levels ◽  
Average Dwell Time ◽  
Cyber Physical Systems ◽  
Switching Sequence ◽  
Physical Systems ◽  
Multiple Sensors ◽  
Battery Capacity ◽  
Finite Time Boundedness

Abstract In this paper, a protocol-based controller is designed for Cyber-Physical Systems (CPSs) with multiple sensors, which are powered by environment-dependent energy harvesting (EDEH) devices, respectively. The Round-Robin (RR) protocol is adopted to coordinate the data transmission of sensors. The protocol-based transmission can be realized only when the energy harvested by EDEH devices is sufficient. The aim of this paper is to design the protocol-based controller to ensure the stochastic finite-time boundedness (FTB) with EDEH and RR protocol. Firstly, modeling the EDEH by a switching sequence with varying sojourn probabilities, assuming a finite battery capacity constraint, and associating protocol-based transmission with a given energy cost, we propose a new recursive model to depict the dynamic of energy levels for each sensor. Then, combining with stochastic analysis and the dynamic of energy levels, the explicit expressions of the controller for each environment with average dwell time (ADT) are obtained. Finally, an example is provided to demonstrate the effectiveness of the designed controllers.

Applying a Methodology in Data Transmission of Discrete Events From the Perspective of Cyber-Physical Systems Environments

2021 ◽  
pp. 278-300
Author(s):  
Reinaldo Padilha França ◽  
Yuzo Iano ◽  
Ana Carolina Borges Monteiro ◽  
Rangel Arthur
Keyword(s):  
Data Transmission ◽  
Computer Systems ◽  
Discrete Event ◽  
Cyber Physical Systems ◽  
Discrete Events ◽  
Memory Consumption ◽  
Physical Systems ◽  
Computational Performance ◽  
The World ◽  
Memory Utilization

Most of the decisions taken in and around the world are based on data and information. Therefore, the chapter aims to develop a method of data transmission based on discrete event concepts, being such methodology named CBEDE, and using the MATLAB software, where the memory consumption of the proposal was evaluated, presenting great potential to intermediate users and computer systems, within an environment and scenario with cyber-physical systems ensuring more speed, transmission fluency, in the same way as low memory consumption, resulting in reliability. With the differential of this research, the results show better computational performance related to memory utilization with respect to the compression of the information, showing an improvement reaching 95.86%.

scholarly journals Guidelines for Managing Sensors in Cyber Physical Systems with Multiple Sensors

2011 ◽  
Vol 2011 ◽  
pp. 1-15 ◽  
Author(s):  
Pradeepkumar Ashok ◽  
Ganesh Krishnamoorthy ◽  
Delbert Tesar
Keyword(s):  
Cyber Physical Systems ◽  
False Alarms ◽  
Physical Processes ◽  
Physical Systems ◽  
Multiple Sensors ◽  
Relationship Network ◽  
And Performance ◽  
Faulty Sensors ◽  
Integrate Data ◽  
Careful Design

Cyber physical systems (CPSs) typically have numerous sensors monitoring the various physical processes involved. Some sensor failures are inevitable and may have catastrophic effects. The relational nature of the diverse measurands can be very useful in detecting faulty sensors, monitoring the health of the system, and reducing false alarms. This paper provides procedures on how one may integrate data from the various sensors, by careful design of a sensor relationship network. Once such a network has been adopted, choices become available in real time for enhancing the reliability, safety, and performance of the overall system.

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