Intelligent Control via Wireless Sensor Networks for Advanced Coal Combustion Systems

Aman Behal ; Sunil Kumar ; Goodarz Ahmadi

关键词: COAL;    COMBUSTION;    COMMUNICATIONS;    DESIGN;    DISTRIBUTION;    GAS FLOW;    KERNELS;    NEURAL NETWORKS;    PHYSICS;    SIMULATION;    TRANSPORT;    TURBULENCE;   

DOI  :  10.2172/934579
RP-ID  :  None
PID  :  OSTI ID: 934579
Others  :  TRN: US200814%%503

美国|英语

来源: SciTech Connect

【 摘 要 】

Numerical Modeling of Solid Gas Flow, System Identification for purposes of modeling and control, and Wireless Sensor and Actor Network design were pursued as part of this project. Time series input-output data was obtained from NETL's Morgantown CFB facility courtesy of Dr. Lawrence Shadle. It was run through a nonlinear kernel estimator and nonparametric models were obtained for the system. Linear and first-order nonlinear kernels were then utilized to obtain a state-space description of the system. Neural networks were trained that performed better at capturing the plant dynamics. It is possible to use these networks to find a plant model and the inversion of this model can be used to control the system. These models allow one to compare with physics based models whose parameters can then be determined by comparing them against the available data based model. On a parallel track, Dr. Kumar designed an energy-efficient and reliable transport protocol for wireless sensor and actor networks, where the sensors could be different types of wireless sensors used in CFB based coal combustion systems and actors are more powerful wireless nodes to set up a communication network while avoiding the data congestion. Dr. Ahmadi's group studied gas solid flow in a duct. It was seen that particle concentration clearly shows a preferential distribution. The particles strongly interact with the turbulence eddies and are concentrated in narrow bands that are evolving with time. It is believed that observed preferential concentration is due to the fact that these particles are flung out of eddies by centrifugal force.