Molten-salt reactors will likely require some level of irradiation testing as part their licensing basis. An ideal experiment would consider the integrated effect neutron flux and fission product generation in addition to circulating flow conditions. The feasibility a natural-circulation salt loop Advanced Test Reactor (ATR) is assessed here. induced by innovative combination gas gaps fin along...

This paper studies the stabilization problem for T-S fuzzy systems with time delay. Based on Lyapunov criterion and Razumikhin theorem, two types of stabilizing controller are designed. One is the linear state feedback controller and the other is the parallel distributed fuzzy controller (PDFC). For each type of the controller, there are some derived sufficient conditions under which the whole ...

Active thermal control of a reactor for YBa2Cu3O7-x chemical vapor deposition is studied using a nonlinear heat transfer model validated by preliminary component testing. LQR and LQE methods are applied to the linearized model for observer-based control. Convergence rates of the controller and observer are indicated by closed-loop eigenvalues and disturbance rejection is assessed with H2 and H∞...

In this work, a nonlinearity measure is used to examine the relative severity of various classes of inherently nonlinear behavior. Using the Optimal Control Structure, the analysis includes a study of how the classes and their properties affect systems’ control-relevant nonlinearity. Two chemical reactor systems that demonstrate a wide range of nonlinear behaviors are examined. The results indi...

This paper deals with the adaptive control of the tubular chemical reactor as a typical member of nonlinear system with continuously distributed parameters. Although this system has negative control properties, proposed adaptive controller which uses external linear model and recursive identification provides good control results. This controller is designed with the use of polynomial approach ...

An adaptive neural network-based predictive strategy is applied to a pilot multivariable chemical reactor. The first stage of the project, simulation study, has been investigated and is presented in this paper, together with the description of the adaptive network. A pseudo-linear radial basis function (PLRBF) network is developed to model the real process and its weights are on-line updated us...

The Liquid-Salt-Cooled Very High-Temperature Reactor (LS-VHTR) was modeled using the neutronics analysis code SCALE6.0 and thermal-hydraulics kinetics modeling RELAP5-3D with objective to devise, analyze, evaluate feasibility stability of a start-up procedure for this reactor natural circulation coolant under Loss Of Offsite Power (LOOP) conditions. This Generation IV design has been initially ...