The pneumatic springs are frequently used as a machine component. They are mainly used for passive vibration damping with the possibility to regulate the working height of the springs. The paper describes the creation of a mathematical model of a spring controlled thru the PID regulator. At conclusion are summarized the limits of PID control and sketches the future possibility of substituting the PID controller by a neural network.

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We have a prototype of platform that is stabilized by means of gyroscopes. Pneumatic motors are used for moving with frames. It was necessary to identify torque characteristics of these motors. It rests on control of pressure in motor and measurement of its force.