Abstract
For step reference input, pneumatic servo systems are designed in such a way that there is a compromise between stability and rise time of the response.For practical use, we have adopted some ideas to improve the response.One example is the operation of a pneumatic on / off valve by electrical power higher than the nominal power for an initial short period of time.Based on the above example, we developed a fuzzy virtual reference generator that can adjust the reference input to the fuzzy controller adaptively by fuzzy rules to improve the rise time of the response.The applicability of the proposed method is confirmed by experiments using vertical pneumatic servo systems.
