Many of today’s electro-mechanical devices exhibit both continuous and discrete behavior. Modeling these hybrid systems presents special challenges for automated modeling and simulation. We show how nonstandard analysis overcomes these challenges, provides a firm mathematical foundation, and satisfies our intuitions about the behavior of hybrid systems.

DEV&DESS was defined to represent combined continuous and discrete model event simulation models and was shown to have the properties expected from a universal representation of such models in “Theory of Modeling and Simulation.” Also in that theory, it was shown that DEVS can provide accurate simulations of DESS models. In this paper, we offer a proof that DEVS on its own is capable of accurat...

In this article we present a new approach for the design of hybrid systems composed of discrete and continuous parts. In our approach the system designers can start their speciications with the discrete as well as with the continuous parts. Both paradigms can be used with there own methodology and Tools. There are integration mechanisms for both paradigms. For the integrated simulation C code i...

This paper presents an overview on development of cost effective wind power generation system. This work motivates for development of a model for hybrid system to investigate the combined operation of wind’s stochastic nature for imbalance minimization and optimal operation. Development of model for trading power in competitive electricity market and development of strategies for trading in ele...

This paper presents a hybrid adaptive network based fuzzy inference system (ANFIS), computer simulation and time series algorithm to estimate and predict electricity consumption estimation. The difficulty with electricity consumption estimation modeling approach such as time series is the reason for proposing the hybrid approach of this study. The algorithm is ideal for uncertain, ambiguous and...

Existing object-oriented modeling environments only support the simulation of a limited type of hybrid dynamic models of variable structure: those with exactly the same state variables and the same algebraic variables in all modes. The most general hybrid dynamic model of variable structure is one in which the number of state variables and algebraic variables is not necessarily equal in all mod...

In this paper, a new digital image watermark algorithm using wavelet packet transform and hybrid filter is proposed for right protection. The proposed watermark algorithm applies watermark to the overall subband that include the lowest frequency band and uses hybrid filter to remove the noise that was added to the watermarked image. The hybrid filter consists of median filter and wiener filter....

When simulating hybrid discrete-continuous dynamical systems a key problem is the discontinuous model behavior. The state derivatives may change in a discontinuous way depending on the discrete state of the model. Conventional simulation algorithms are not suitable to integrate hybrid system models with high accuracy and reasonable computational e ort. In this paper we present results obtained ...

The aim of this study is to present a hybrid algorithm based on two meta-heuristic algorithms named Vibration Damping Optimization (VDO) algorithm and Genetic Algorithm (GA) for solving the stochastic capacitated location-allocation problem. For solving the model more efficiently, the simplex algorithm, stochastic simulation and the proposed hybrid algorithm are integrated to design a powerful ...