Reliable control of nuclear power plants
Control, theory and advanced technology
Efficient fault tolerant optimum or suboptimum approaches for control of nuclear reactors are discussed in this paper. An optimal modal state feedback technique which was based upon a sequential design strategy was previously developed for control of the Big Rock Point boiling water reactor (BWR). In this paper, that approach is extended for such cases where the state of the system is not available for feedback purposes. Therefore, two alternative schemes are presented and their performance is compared. One approach is based upon the use of estimates of the unavailable state variable for feedback purposes. The other is based upon suboptimal projective control strategies. In both approaches an unknown input observer (UIO) is employed for detection and identification of actuator failures. In addition, in the first approach state estimate of the UIO is used for control as well as fault detection purposes. Simulation studies confirm the applicability of the proposed high performance reliable control strategies for nuclear power plants.
Saif, M. and Jalili, M.. (1992). Reliable control of nuclear power plants. Control, theory and advanced technology, 8 (3), 547-566.