›› 2015, Vol. 24 ›› Issue (2): 20702-020702.doi: 10.1088/1674-1056/24/2/020702
江正仙a b c, 崔宝同a b
Jiang Zheng-Xian (江正仙)a b c, Cui Bao-Tong (崔宝同)a b
摘要: This paper investigates the estimation problem for a spatially distributed process described by a partial differential equation with missing measurements. The randomly missing measurements are introduced in order to better reflect the reality in the sensor network. To improve the estimation performance for the spatially distributed process, a network of sensors which are allowed to move within the spatial domain is used. We aim to design an estimator which is used to approximate the distributed process and the mobile trajectories for sensors such that, for all possible missing measurements, the estimation error system is globally asymptotically stable in the mean square sense. By constructing Lyapunov functionals and using inequality analysis, the guidance scheme of every sensor and the convergence of the estimation error system are obtained. Finally, a numerical example is given to verify the effectiveness of the proposed estimator utilizing the proposed guidance scheme for sensors.
中图分类号: (Sensors (chemical, optical, electrical, movement, gas, etc.); remote sensing)