In the field of civil engineering, wireless sensor networks are conceived to be deployed in structural monitoring systems. In the structural control applications, the requirement of continuous and real-time sensing represents the main challenge for the wireless sensor network due to the problem of data loss. In this paper, the authors attempt to introduce wireless links and a digital controller into a structural control system for a reduced-scale three-story steel frame mounted on a shaking table. The structural control system mainly consists of four accelerometers, a structural controller, and an active mass damper as actuator. The designed wireless sensors are based on the use of recent low-power System-on-Chip wireless CC1110 transceivers, which integrate an 8051 microcontroller core and are able to operate in most of the license-free ISM (Industrial, Scientific and Medical) frequency bands. The active mass damper is driven by a newly designed digital PID (proportional, integral, and derivative) direct-current motor controller, which is based on the high integration power amplifier LMD18200 and the enhanced 8051 core in CC1110.
|Titolo:||An active mass damper system for structural control using real-time wireless sensors|
|Data di pubblicazione:||2012|
|Appare nelle tipologie:||1.1 Articolo in rivista|