Stability Of Composite System Research Articles

Dynamic Co-evolution analysis of low-carbon technology innovation compound system of new energy enterprise based on the perspective of sustainable development

The implementation of a low-carbon economy is the key to sustainable economic and social development, and low-carbon technological innovation of new energy enterprises is its driving force and core. Based on the establishment of a new energy enterprise low-carbon technology innovation composite system order index system, it integrates synergy theory and genetic algorithms to build a new energy enterprise low-carbon technology innovation composite system(L-CTICS) dynamic co-evolution model, analyze the order and stability of the composite system, select the statistical data of the low-carbon technology innovation composite system of 12 new energy enterprises from 2010 to 2019, establish the corresponding co-evolution model and perform analysis and calculation. The results show that the model can better reflect the dynamic co-evolution relationship of L-CTICS, and detailing the dynamics of the win-win, double-loss and complementary win-loss among the input, output, and support three subsystems in the composite system. The co-evolution relationship fully demonstrates the co-evolution relationship between subsystems and the stability of the overall composite system, and provides a new research direction for low-carbon technology innovation research for new energy enterprises.

Thermal stability of polypropylene/carbon nanofiber composite

AbstractThermal stability of polypropylene and carbon nanofibre composite system has been studied using Thermogravimetric Analysis, Limited Oxygen Index (LOI), Flammability, Calorimetry, and Oxidation Induction Time techniques. Definite improvement in thermo‐oxidative stability of the composite system has been observed. Improvement in LOI and a distinct change in the burning characteristics suggest a reduction in potential fire hazards. The nanocomposite system will have enhanced anti‐ageing characteristics and require more stringent conditions for the initiation of burning and the ultimate impact of burning will be less. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 100: 3574–3578, 2006

Stability of composite systems with an asymptotically hyperstable subsystem

Abstract In this note, it is proved that stability of composite systems including parallel subsystems can be achieved for certain sets of initial conditions and additional stability assumptions for the non-hyperstable subsystems. It is required that at least one subsystem be asymptotically hyperstable.

Decentralized Control Design: An Overview

In this paper we give an overview of decentralized decision making and control research and try to discern its trends. We first examine the decentralized structures which arise in a number of application areas. We then consider the stabilization of composite systems which are subjected to decentralized information constraints and we also examine appropriate design techniques for such systems. This is followed by a presentation of the basic results on stochastic decentralized and partially decentralized control problems where non-classical information patterns arise. Decentralized state estimation is also briefly discussed and the robustness issues in decentralized control are addressed. Some conclusions are then given on promising future research directions.

Local stability of composite systems--Frequency-domain condition and estimate of the domain of attraction

This paper is concerned with such composite systems whose subsystems contain one nonlinearity each and whose interconnections are functions of the scalar outputs of subsystems. A frequency-domain condition which assures local asymptotic stability is given under the assumptions that each nonlinearity satisfies a sector condition, that interconnections are linearly bounded, and that linear parts of subsystems may have unstable poles. In deriving the above result, such Lyapunov functions of subsystems are constructed so that their weighted sum is a Lyapunov function of the overall system. A method to estimate the domain Of attraction based on the above Lyapunov functions is also studied. When the bounds on nonlinearities hold true in the entire space and when the linear parts do not have unstable poles, the present condition turns out to be the same with the L 2 -stability condition which was obtained before by Araki.

Stability analysis of composite systems

The stability of composite systems is investigated in terms of their subsystems and their interconnecting structure. Whereas previous investigators utilized vector Lyapunov functions in their approach, scalar functions consisting of weighted sums of scalar Lyapunov functions of subsystems of the composite systems are employed presently. It is shown that the scalar Lyapunov function approach may in general yield stability results which are less conservative than those obtained by the vector Lyapunov function approach. Both methods are applied to specific examples considered previously. These examples demonstrate the improvement of the present results.

Steady State Stability of Composite Systems

Composite loads and induction machines are included in the study of steady state stability characteristics of power systems reported in this paper. Reactive power characteristics must be considered when induction machines are involved, in addition to the real power characteristics which are considered for synchronous machine groups. A determination of the synchronizing power coefficients under various operating conditions, as described herein, provides a comparatively simple method of determining the safe and dangerous regions of steady state operation.