ASPECTS REGARDING INTEGRATED DESIGN OF PNEUMATIC ACTUATORS BASED SYSTEMS

Abstract

The paper proposes a large approach to pneumatic systems starting from the mathematical laws, written in the form of differential equations, which govern the operation of pneumatic systems and continuing with the simulation model. The concept of integrated design includes all approaches, needed for an optimal and deep system understanding, such as modeling, simulation and control. Pneumatic actuators have a nonlinear functionality because of air compressibility, the existing frictions and the valves nonlinearities. Because of these, they are used in high speed applications and simple positioning systems. Thus, the mathematical analyses of pneumatic systems have received a special attention. Aspects concerning mathematical modeling using Bond Graph method are presented in the paper too. Bond graph method is an alternative to mathematical "traditional" modeling and like any alternative method may be used to verify the calculations and how the approaches were designed in the mathematical system. Another advantage would be the electronic similarity with the introduction of the three passive elements: resistance, condenser and coil, proposed to be the basic elements in the phenomenology in this method. The differential equations were implemented in Matlab Simulink..