Solitary wave solutions for a generalized KdV–mKdV equation with distributed delays

This paper deals with a generalized KdV–mKdV equation with time delay. By employing the geometrical singular perturbation theory and the linear chain trick, we establish the existence result of solitary wave solutions when the average delay is sufficiently small, for a special convolution kernel

Research on missile consumption in wartime with the airport runway as the target

To solve the problem of insufficient research on missile consumption in wartime with the airport runway as the target, this paper takes the airport runway as the target, taking the invalidation probability as the expected target, and adopting conventional missiles with submunitions. In combination with penetration and anti-missile countermeasures, this paper publicly proposes the consumption calculation method and model for the first time, and the multi-wave strikes strategy and calculation method are proposed either. The model is verified by combining the specific airport runway, fighter jet model and missile parameters. The experiment calculates the total consumption and the corresponding probability of destroying the target, as well as the total strike wave and the corresponding probability of destroying the target. The results prove the effectiveness and accuracy of the method and model, and provide an important basis for the sufficient amount of missiles to attack airport runways in wartime

A Hardware-in-the-Loop Based Co-Simulation Platform of Cyber-Physical Power Systems for Wide Area Protection Applications

With the development of smart grid technology, there has been an increasingly strong tendency towards the integration between the aspects of power and communication. The traditional power system has gradually transformed into the cyber-physical power system (CPPS), where co-simulation technologies can be utilized as an effective measure to describe the computation, communication, and integration processes of a power grid. In this paper, the construction methods and application scenarios of co-simulation platforms in the current research are first summarized. Then, a scheme of the real-time hardware-in-the-loop co-simulation platform is put forward. On the basis of power grid simulation developed with the Real-Time Laboratory (RT-LAB), and the communication network simulation developed with OPNET, the control center was developed with hardware devices to realize real-world control behavior instead of digital simulations. Therefore, the mixed-signal platform is capable of precisely simulating the dynamic features of CPPS with high speed. The distributed simulation components can be coordinated in a unified environment with high interoperability and reusability. Moreover, through a case study of a wide area load control system, the performance of the proposed platform under various conditions of control strategies, communication environments, and sampling frequencies was revealed and compared. As a result, the platform provided an intuitive and accurate way to reconstruct the CPPS environment where the influence of the information side of the CPPS control effects was verified