<abstract> <p>Conventional geothermal energy systems are limited by hydrogeological conditions and environmental risks, wind/solar solutions have issues with intermittency the need for grid storage. Deep closed-loop such as Eavor-Loop championed scalable, dispatchable, zero-emission alternative technologies, but yet they largely untested. A series of numerical models created using f...

The State-Dependant Riccati Equation method has been frequently used to design suboptimal controllers applied to nonlinear dynamic systems. Different methods for local stability analysis of SDRE controlled systems of order greater than two such as the attitude dynamics of a general rigid body have been extended in literature; however, it is still difficult to show global stability properties of...

The paper 1 addresses the problem of directly estimating the parameters of a reduced order digital controller using a closed loop type identification algorithm. The algorithm minimizes the closed loop plant input error between the nominal closed loop system and the closed loop system using the reduced order controller. It is assumed that a plant model (if necessary validated in closed loop with...