Fuzzy descriptor-based robust-optimal controller (IMAGE) Shibaura Institute of Technology Caption (a) The controller uses Parallel Distributed Compensator (PDC) as the control stratergy and Linear Matrix Inequality (LMI)-based stability conditions to achieve robust-optimal control. (b) The robust-optimal controller demonstrates lower error values in controlling the rotary inverted pendulum. Credit Ngoc-Tam Bui from Shibaura Institute of Technology Usage Restrictions Credit must be given to the creator. License CC BY Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.