Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Self-Tuning State Estimation for Adaptive Truss Structures Using Strain
  Gauges and Camera-Based Position Measurements   In the context of control of smart structures, we present an approach for
state estimation of adaptive buildings with active load-bearing elements. For
obtaining information on structural deformation, a system composed of a digital
camera and optical emitters affixed to selected nodal points is introduced as a
complement to conventional strain gauge sensors. Sensor fusion for this novel
combination of sensors is carried out using a Kalman filter that operates on a
reduced-order structure model obtained by modal analysis. Signal delay caused
by image processing is compensated for by an out-of-sequence measurement update
which provides for a flexible and modular estimation algorithm. Since the
camera system is very precise, a self-tuning algorithm that adjusts model along
with observer parameters is introduced to reduce discrepancy between system
dynamic model and actual structural behavior. We further employ optimal sensor
placement to limit the number of sensors to be placed on a given structure and
examine the impact on estimation accuracy. A laboratory scale model of an
adaptive high-rise with actuated columns and diagonal bracings is used for
experimental demonstration of the proposed estimation scheme.

2
The categories of this paper are: math
29
The categories of this paper are: funct-an
16
The categories of this paper are: stat
33
The categories of this paper are: plasm-ph
3
The categories of this paper are: physics
18
The categories of this paper are: econ
14
The categories of this paper are: math-ph
7
The categories of this paper are: hep-th
13
The categories of this paper are: quant-ph
4
The categories of this paper are: cond-mat
30
The categories of this paper are: q-alg
21
The categories of this paper are: adap-org
22
The categories of this paper are: chao-dyn
8
The categories of this paper are: hep-ex
32
The categories of this paper are: atom-ph
24
The categories of this paper are: dg-ga