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.
This paper investigates the absolute stability problem of the transformation Lurie model with time-varying del...
Xiaojiao Zhang, Baotong Cui and Wen Li Key Laboratory of Advanced Process Control for Light Industry (Ministry of Education), Jiang-nan University, Wuxi 214122 China. School of IoT Engineering, Jiangnan University, Wuxi 214122 China
This paper aims to improve the performance of a class of distributed parameter systems for the optimal switching of actuators and controllers based on event-driven control. It is assumed that in the available multiple actuators, only one actuator can receive the control signal and be activated over an unfixed time interval, and the other actuators keep dormant.After incorporating a state observer into the event generator, the event-driven control loop and the minimum inter-event time are ultimately bounded. Based on the event-driven state feedback control, the time intervals of unfixed length can be obtained. The optimal switching policy is based on finite horizon linear quadratic optimal control at the beginning of each time subinterval. A simulation example demonstrate the effectiveness of the proposed policy.
This paper investigates the synchronization problem for two different complex dynamical Lurie networks.The first one is with constant coupling and the second one is with constant coupling and discrete-delay coupling.Based on contraction theory and matrix measure properties,some new delay-independent synchronization conditions depending on coupling strength and network topology are proposed.Finally,simulation results are presented to support the theoretical results.
