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The trend extraction of the burning zone temperature is the basis for the burning state identification and stability control of the cement. In this paper, the trend extraction method of the burning zone temperature based on singular spectrum analysis is studied. Firstly, a visual inspection device is used to detect the temperature of the burning zone. Then, the singular spectrum analysis is carried...
This paper investigates the problem of stabilization of discrete-time systems with multiple actuator delays. The delays in the system are time-varying or even unknown. By developing the methodology of truncated pseudo predictor feedback (TPPF), state feedback control laws which use only the current states of the system are constructed to solve the problem. The modified TPPF controller is memoryless...
This paper investigates the leader-following consensus problem of the switched multi-agent systems with general second-order dynamics. In the switched systems, we consider two subsystems, CT (continuous-time) subsystems and DT (discrete-time) subsystems. A linear distributed control algorithm is proposed for leader-following consensus in the multi-agent systems with switched dynamics. Moreover, based...
This technical note is aimed at studying the joint impacts of the system dynamic structure and the communication topology on the synchronization of multi-linear positive systems. Through rigorous analysis, necessary and sufficient conditions are given to guarantee the coupled systems achieving positive synchronization under the distributed control protocol, and the gain matrix designed is related...
In this paper consensus control of autonomous vehicle platoon is investigated for connected vehicle systems (CVSs) with time delays. Information interaction of the CVSs can be modeled as a network topology. The network topology is extended into the generic framework adapting to any topology, which is represented by a Laplacian matrix. Based on the generic framework, the distributed control protocols...
The problem of full-state observer and reduced-order state observer design for a class of linear time-varying system is researched in this paper. Implementing the linear time-varying system transformed, the two algorithms are proposed. Compared with other observer design approaches of linear time-varying system, the pivotal merit of these algorithms is no sophisticated calculation. Moreover, the separation...
Through studying the K-L transformation (Karhunen-Loeve transformation) theory deeply, it is found that the transformation matrix is too large to be used for the compression coding of ordinary digital images. In this paper, we propose the improvement and optimizing method for this problem, and use the Feng Yun No.2 meteorological satellite cloud image to segment the image which is consist of different...
Frequency-domain criterion on containment control for general linear multi-agent systems with time delay is studied under the directed network topology. A distributed protocol with time-invariant delay is proposed. When time-delay is an unknown constant, frequency-domain criterion on containment control of general linear multi-agent systems with delay is obtained, and an upper bound of delay is given...
In the paper, the observer design problems for positive linear systems in terms of average dwell time (ADT) switching are addressed. Sufficient conditions which guarantee the error system is exponentially stable are proposed. All the conditions are shown by the means of linear programming (LP). With given method, desired observer parameters can be easily constructed. Lastly, two numerical examples...
In this paper, because of infinite-dimensional feature and complex nonlinearities of the distributed parameter systems, a new data-driven modeling method has been proposed. The temporal-spatial output of the system is measured at a finite number of spatial locations. At the same time it is assumed that the input of the system is a temporal variable. Firstly, Karhunen-Loève(KL) decomposition is used...
Quadratic minimization (QM) has been investigated for many years, which is generally supposed to be time-invariant and at the same level. Nevertheless, the QM which arises in practical applications, is usually time-varying and may be at the different levels. Different from general QM, a novel different-level time-varying QM (DLTVQM) is proposed and investigated in this paper. Firstly, the DLTVQM solving...
This paper studies the consensus problem in second-order multi-agent systems. For the first time, an event-triggered impulsive consensus control scheme is proposed to solve this problem. Under the event-triggered impulsive consensus control scheme, a distributed event-condition is defined in advance for each agent and the impulsive control is taken only when such condition satisfies, and no any actions...
This paper investigates the formation control of the multi-agent with single-integrator kinematics in the plane, and presents a new method which could guarantee the agent to realize the arbitrary prescribed formation, furthermore, locations of the agents in the formation can be arbitrary arranged as what we expected. Our method is generalized as follows: Firstly, a consensus control protocol is designed,...
This paper studies a class of complex-valued linear systems whose state evolution dependents on both the state vector and its conjugate. The complex-valued linear system comes from linear dynamical quantum control theory and is also encountered when a normal linear system is controlled by feedback containing both the state vector and its conjugate that can provide more design freedom. By introducing...
In this paper, the leader-follower consensus problem for a kind of nonlinear multi-agent systems with general directed communication topologies is studied. For this problem, the dynamics of all agents are identical and nonlinear under the strict form with time-varying exponential growth rate subject to Lipschitz condition constraints. With the aid of the observers of states, a distributed output-based...
Feature extraction is very important in the fault detection of rolling bearing for wind turbine. More features don't mean good performance. Data analysis and experiment based on real wind turbine samples are carried out to achieve efficient fault detection. Firstly, the original signal is decomposed with improved Empirical Mode Decomposition(EMD) to get a finite number of stationary intrinsic mode...
This paper deals with the bipartite consensus of multiple agents with output saturation under the signed directed graph. First, we build the equal conditions of bipartite consensus and classical consensus. Then, as an application, we take existing conditions for classical consensus problems with output saturation to solve bipartite consensus problems with output saturation. Finally, one simulation...
In this paper, we investigate the consensus problem for the second-order multi-agent systems with communication time-delay. We firstly introduce the consensus protocol based on neighbor directed network. Then by using Lyapunov functions, we prove the stability of the proposed control protocols, and derive a sufficient condition for the consensus convergence of the multi-agent system. Finally, simulation...
It is well-known that the matrix equation plays an important role in stability analysis and controller design in linear systems. In this article, we develop a Smith normal form reduction method for computing the solution to pair (X, Y) of the nonhomogeneous matrix equation XB — AX = CY + R. The closed-form solutions to the nonhomogeneous matrix equation are presented. Finally, a numerical applied...
This paper proposes a robust model predictive control approach to address the optimized adaptive tracking consensus problem for multi-vehicle systems with periodic sampling under the directed communication topology. Unlike the existing works using the global information to achieve the tracking consensus, the proposed optimized tracking cooperative control strategy considers that the control gain is...
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