Abstract

In this paper, we propose and simulate the acceleration estimate method in pneumatic servo systems. Acceleration feedback is important in pneumatic servo systems. Although finite-differences-method and derivative-filter-method are ordinarily used, the former cannot detect acceleration in low-acceleration-region and the latter causes a time-delay. In our proposed estimation method, finite-differences-method is used in high-acceleration-region and interval of encoder pulse and flow order is used in low-acceleration-region. The proposed method gives better feedback simulation results than ordinary one especially in low-acceleration-region.