PIDA Controller Design for Higher Order Stable Process with Inverse Response Characteristic

Design of proportional integral derivative accelerated (PIDA) controller has been proposed for higher order stable process with the inverse response characteristic. Process with inverse characteristic exhibit dynamic behavior of large overshoot and initial inverse response. Therefore these processes become difficult to control. In this paper, PIDA controller has been used to control these processes. PIDA controller parameters are computed using direct synthesis approach and frequency response matching. The distinct feature of the proposed method is that it is directly applicable to higher order systems and has single adjustable closed loop tuning parameter. Simulations have been carried out to illustrate the superiority of the proposed method over the previously cited well-known methods. The proposed method provides robust closed loop performance under the effect of noise.