When are product systems controllable?
G. Grammel · 2002
A product system consists of a finite number of independent control systems. We introduce the notion of 'controllability with selectable time' in order to investigate the controllability of product systems. If all factors are controllable and at most one factor is not controllable with selectable time, then the product system is controllable. For locally accessible control affine systems, the converse is true as well.