A fractional-order control strategy for pneumatic position servosystem is presented in this paper.\r\nThe idea of the fractional calculus application to control theory was introduced in many works, and\r\nits advantages were proved. However, the realization of fractional-order controllers for pneumatic\r\nposition servosystems has not been investigated. Based on the relationship between the pressure\r\nin cylinder and the rate of mass flow into the cylinder, the dynamic model of pneumatic position\r\nservo system is established. The fractional-order controller for pneumatic position servo and\r\nits implementation in industrial computer is designed. The experiments with fractional-order\r\ncontroller are carried out under various conditions, which include sine position signal with\r\ndifferent frequency and amplitude, step position signal, and variety inertial load. The results show\r\nthe effectiveness of the proposed scheme and verify their fine control performance for pneumatic\r\nposition servo system.
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