PRESCHEDULED ADAPTIVE-CONTROL SCHEME FOR RESONANCE CANCELLATION OF A DISTRIBUTED SOLAR COLLECTOR FIELD

Distributed solar collector fields possess low frequency resonance cha racteristics. Consequently, whenever fast response control is attempte d using conventional controllers, be they fixed or adaptive, oscillato ry performance results. Accordingly, slow control has to be accepted i n order to provide adequate damping. In this paper an adaptive control scheme is proposed that takes into account resonance characteristics. This scheme enables the speed of response to be increased without sac rificing stability margins and damping.