—In this paper, a design of a modified Internal Model Control for an unstable plant with an integrator in continuous-time system is proposed. The system becomes a stable system by stabilizing an unstable plant and it does not cause a steady-state error by an input side disturbance for an unstable plant with an integrator. We describe details of the proposed method including a design of stabilizing an unstable plant, a design of a disturbance compensator, and a design of whole system. In the simulation study, these simulation results are shown that the proposed method has a superior performance. The nominal plant and the plant with a modeling error can be stabilized and the proposed method can reduce influence by in an input side disturbance of an unstable plant.
Index Terms—Internal model control, unstable plant, disturbance compensator.
The authors are with the School of Science and Technology, Meiji University, Kawasaki-shi, Kanagawa, 214-8571 JAPAN (e-mail: ce11045@ meiji.ac.jp).
Cite: H. Shibasaki, J. Endo, Y. Hikichi, R. Tanaka, K. Kawaguchi, and Y. Ishida, "A Modified Internal Model Control for an Unstable Plant with an Integrator in Continuous-Time System," International Journal of Information and Electronics Engineering vol. 3, no. 4, pp. 357-360, 2013.