H∞ filtering for dynamic compensation of self-powered neutron detectors -: A linear matrix inequality based method

A method is described to develop an H-infinity filtering method for the dynamic compensation of self-powered neutron detectors normally used for fixed incore instruments, An H-infinity norm of the filter transfer matrix is used as the optimization criteria in the worst-case estimation error sense. Filter modeling is performed for both continuous- and discrete-time models. The filter gains are optimized in the sense of noise attenuation level of H-infinity setting. By introducing Bounded Real Lemma, the conventional algebraic Riccati inequalities are converted into Linear Matrix Inequalities (LMIs). Finally, the filter design problem is solved via the convex optimization framework using LMIs. The simulation results show that remarkable improvements are achieved in view of the filter response time and the filter design efficiency. (C) 1999 Elsevier Science Ltd. All rights reserved.