1999•Journal of Dynamic Systems Measurement and ControlRequires access

A High Performance Pneumatic Force Actuator System: Part I—Nonlinear Mathematical Model

Edmond Richer, Yildirim Hürmüzlü

Abstract

In this paper, we developed a detailed mathematical model of dual action pneumatic actuators controlled with proportional spool valves. Effects of nonlinear flow through the valve, air compressibility in cylinder chambers, leakage between chambers, end of stroke inactive volume, and time delay and attenuation in the pneumatic lines were carefully considered. We performed system identification, numerical simulation, and model validation experiments for two types of air cylinders and different connecting tubes length. The mathematical model of the present article is used in a sequel article to develop high performance nonlinear pneumatic force controllers. [S0022-0434(00)00503-7]

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Key concepts: Nonlinear system, Actuator, Control theory (sociology), Pneumatic actuator, Nonlinear model, Mathematical model, Attenuation, System identification