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Article

Open Access

Fuzzy Control Model for Structural Health Monitoring of Civil Infrastructure Systems

Author(s)

Abayomi M. Ajofoyinbo and David O. Olowokere

Full-Text PDF Download XML 10831 Views

DOI:10.17265/2328-2231/2015.01.002

Affiliation(s)

Department ofEngineering, Texas Southern University, Houston, Texas77004, USA

ABSTRACT

This paper presents a Fuzzy Control Model for SHM (Structural Health Monitoring) of civil infrastructure systems. Two important considerations of this model are (a) effective control of structural mechanism to prevent damage of civil infrastructure systems, and (b) energy-efficient data transmissions. Fuzzy Logic is incorporated into the model to provide (a) capability for handling imprecision and non-statistical uncertainty associated with structural monitoring, and (b) framework for effective control of the mechanism of civil infrastructure systems. Moreover, wireless smart sensors are deployed in the model to measure dynamic response of civil infrastructure systems to structural excitation. The operation of these wireless smart sensors is characterized as discounted SMDP (Semi-Markov Decision Process) consisting of two states, namely: sensing/processing and transmitting/receiving. The objective of the SMDP-based measurement scheme is to choose policy that offers optimal energy-efficient transmission of measured value of vibration-based dynamic response. Depending on the net magnitude of measured dynamic responses to excitation signals, data may (or may not) be transmitted to the Fuzzy control segment for appropriate control of the mechanism of civil infrastructure systems. The efficacy of this model is tested via numerical analysis, which is implemented in MATLAB software. It is shown that this model can provide energy-efficient structural health monitoring and effective control of civil infrastructure systems.

KEYWORDS

Structural health monitoring, fuzzy control, semi-Markov decision process, wireless sensors, civil infrastructure
systems.

Cite this paper

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