A MODIFIED PETRI NET FRAMEWORK FOR HYBRID SYSTEM MODELING
Journal Title: ANALELE UNIVERSITATII DIN CRAIOVA - Seria Inginerie electrica - Year 2011, Vol 35, Issue 35
Abstract
In order to achieve the framework for analysis of hybrid dynamic systems, different approaches of modeling are used and at present is already an abundance of such paradigms, including Petri Nets. Often, the continuous dynamic is represented by differential – algebraic equations; on the other hand, the discrete dynamic is modeled by automata or input – output transitions systems, with a finite and countable number of states. This paper focuses on the modeling of hybrid systems with autonomous commutation of the model generated by a hysteresis phenomenon through a particular Petri Nets structures, called Modified Petri Nets (MPN). The main goal of this approach is to get a formal description language for such hybrid systems, which combines the advantages of a graphical description with the possibility of a transparent visualization, simulation and analysis. The proposed concepts are illustrated with a case study, which refers to a classical temperature control process in a room, using a thermostat with anticipative resistance. Starting from a generic mathematical model and using the Visual Object Net ++ software tool, several simulation scenarios was proposed, in order to verifying the Petri Nets structures achieved. The simulation results can be used for building a modular hierarchical structure of the models.
Authors and Affiliations
Mircea Adrian DRIGHICIU, Anca PETRISOR
Keywords
Related Articles
- EP ID EP108415
- DOI -
- Views 129
- Downloads 0
Three Dimensional Numerical Solution for Maximum Magnetic Field of 21 kJ Superconducting Magnetic Energy Storage Device
To develop an optimized configuration of superconducting magnetic energy storage (SMES) device concerning the volume of the superconducting material and its cost, a two-dimensional numerical model was created in [11] usi...
THERMAL AGEING OF OIL IMPREGNATED PAPER FOR POWER TRANSFORMERS INSULATION SYSTEMS
The assessment of conditions and life time reserves of power transformers is generally done based on the analysis of characteristics of main components of insulation systems (oil and paper). During operation, the insula...
Study of Indirect Current Control Methods for Urban Traction Active DC Substations
Although the high power DC traction substations are using 12 pulse rectifier which have lower distortion than the classical 6 pulse rectifier, considering the high power, the reactive and harmonic components of the...
Use of Modern Computing Technique to Improve the Energy Indicators of Drive Motors of the Coal Mills
In this paper, the authors present a study on the energetic opportunity to replace derated motors of the five mills which are in service at a power plant with other motors by a rated power closer to the actual load...
Power Control Assessment in Induction Heating Systems with Voltage Source Inverter and Resonant L-LC Load
The attention in this paper is directed to the power control in an induction heating system for seamless pipes consisting of a single-phase voltage source inverter with L-LC resonant load supplied by a three-pha...