Design and allocation of power system stabilizers using the particle swarm optimization technique for an interconnected power system

The guaranteed-performance consensualization for high-order linear and nonlinear multiagent systems with switching topologies is respectively realized in a completely distributed manner in the sense that consensus design criteria are independent of interaction topologies and switching motions. This paper first proposes an adaptive consensus protocol with guaranteed-performance constraints and switching topologies, where interaction weights among neighboring agents are adaptively adjusted and state errors among all agents can be regulated. Then, a new translation-adaptive strategy is shown to realize completely distributed guaranteed-performance consensus control and an adaptive guaranteed-performance consensualization criterion is given on the basis of the Riccati inequality. Furthermore, an approach to regulate the consensus control gain and the guaranteed-performance cost is proposed in terms of linear matrix inequalities. Moreover, main conclusions for linear multiagent systems are extended to Lipschitz nonlinear cases. Finally, two numerical examples are provided to demonstrate theoretical results.

Completely Distributed Guaranteed-Performance Consensualization for High-Order Multiagent Systems With Switching Topologies

Predictive maintenance (PdM) is an effective means to eliminate potential failures, ensure stable equipment operation and improve the mission reliability of manufacturing systems and the quality of products, which is the premise of intelligent manufacturing. Therefore, an integrated PdM strategy considering product quality level and mission reliability state is proposed regarding the intelligent manufacturing philosophy of ‘prediction and manufacturing’. First, the key process variables are identified and integrated into the evaluation of the equipment degradation state. Second, the quality deviation index is defined to describe the quality of the product quantitatively according to the co-effect of manufacturing system component reliability and product quality in the quality–reliability chain. Third, to achieve changeable production task demands, mission reliability is defined to characterise the equipment production states comprehensively. The optimal integrated PdM strategy, which combines quality cont...

Integrated predictive maintenance strategy for manufacturing systems by combining quality control and mission reliability analysis

Optimal Control of a Biharmonic Obstacle Problem, D. Adams et al.- Minimal Thinness and Beurling's Minimum Principle, H. Aikawa.- Progress in the Problem of Lp-Contractivity of Semigroups for Partial Differential Operators, A. Cialdea.- Uniqueness and Nonuniqueness in Inverse Hyperbolic Problems and the Black Hole Phenomenon, G. Eskin.- Global Green's Function Estimates, M.W. Frazier, I.E. Verbitsky.- On Spectral Minimal Partitions: the Case of the Sphere, B. Helffer et al.- Weighted Sobolev Space Estimates for a Class of Singular Integral Operators, D. Mitrea et al.- On general Cwikel-Lieb-Rozenblum and Lieb-Thirring inequalities, S. Molchanov, B. Vainberg.- Estimates for the Counting Function of the Laplace Operator on Domains with Rough Boundaries, Y. Netrusov, Y. Safarov.- W2,p-Theory of the Poincare Problem, D.K. Palagachev.- Weighted Inequalities for Integral and Supremum Operators, L. Pick.- Finite Rank Toeplitz Operators in the Bergman Space, G. Rozenblum.- Resolvent Estimates for Non-Selfadjoint Operators via Semigroups, J. Sjoestrand.

Analysis and applications

The current paper addresses the distributed guaranteed-cost synchronization problems for general high-order linear multiagent networks. Existing works on the guaranteed-cost synchronization usually require all state information of neighboring agents and cannot give the cost budget previously. For both leaderless and leader-following interaction topologies, the current paper first proposes a dynamic output feedback synchronization protocol with guaranteed-cost constraints, which can realize the tradeoff design between the energy consumption and the synchronization regulation performance with the given cost budget. Then, according to different structure features of interaction topologies, leaderless and leader-following guaranteed-cost synchronization analysis and design criteria are presented, respectively, and an algorithm is proposed to deal with the impacts of nonlinear terms by using both synchronization analysis and design criteria. Especially, an explicit expression of the synchronization function is shown for leaderless cases, which is independent of protocol states and the given cost budget. Finally, numerical examples are presented to demonstrate theoretical results.

Dynamic Output Feedback Guaranteed-Cost Synchronization for Multiagent Networks With Given Cost Budgets

Optimal control of constrained switched systems and application to electrical vehicle energy management

Computational method for optimal control of switched systems with input and state constraints

Feasibility study to damp power system multi-mode oscillations by using a single FACTS device

This paper considers an optimal scheduling problem of maintenance and production for a machine. Firstly, the problem is formulated as a stochastic switched impulsive optimal control problem. However, there exists the stochastic disturbance in this model. Thus, it is difficult to solve the problem by conventional optimisation techniques. To overcome this difficulty, the stochastic switched impulsive optimal control problem is transformed into a deterministic switched impulsive optimal control problem with continuous state inequality constraints. Then, by combining a time-scaling transformation, a second-order smoothing technique and a penalty function method, an improved Newton algorithm is developed for solving this problem. Convergence results indicate that the algorithm is globally convergent with quadratic rate. Finally, two numerical examples are provided to illustrate the effectiveness of the developed algorithm.

Xiang Wu

Papers

Optimal control of constrained switched systems and application to electrical vehicle energy management

Computational method for optimal control of switched systems with input and state constraints

Feasibility study to damp power system multi-mode oscillations by using a single FACTS device

Computational method for optimal machine scheduling problem with maintenance and production

Optimal switching control for drug therapy process in cancer chemotherapy