In many cases simulation program is a very useful tool to analyze and estimate the performances of a control system. Thus, its correctness and effectiveness are mostly depend on how the adopted mathematical (structural) modeling is pertinent to representing the real activities of the plant and how the related parameters can be easily identified.
In this thesis, mathematical models for the pneumatic servo elements are surveyed and the most suitable models are selected based on some series of elementary experiments. Also corresponding parameter identification methodology is suggested. To construct a generalized simulation program, basic pneumatic elements and control elements are synthesized by engaging the concepts of pseudo bond, which have been used in the thermofluid processes, and connection matrix which is described by the relationship between basic elements and pseudo bond. By comparing the step responses of a pneumatic servo system, correctness of the simulation is investigated. The results show a good qualitative correspondence and not quantitative one.